39results about How to "Does not affect electricity consumption" patented technology

The embodiment of the invention provides a binding post enabling a single-phase watt-hour meter to be replaced without a power cut. The binding post enabling the single-phase watt-hour meter to be replaced without a power cut comprises a terminal box and a meter replacement plug. The terminal box is provided with four connecting units. Each connecting unit is provided with an upper clamping piece, a lower clamping piece and a jack located between the upper clamping piece and the lower clamping piece, an upper metal dome and a lower metal dome are arranged in the jack, the upper metal dome is connected with the upper clamping piece, the lower metal dome is connected with the lower clamping piece, and the upper metal dome is in contact with the lower metal dome. The meter replacement plug is provided with four metal male tabs. The four metal male tabs are matched with the four jacks. The meter replacement plug is used for being plugged into the terminal box. When the meter replacement plug is plugged into the terminal box, an incoming live wire is in short circuit connection with an indoor live wire, an incoming null line is in short circuit connection with an indoor null line, and electricity utilization of resident users cannot be influenced no matter what kind of operation is conducted on the single-phase watt-hour meter at this time; besides, the problem that interruption of power supply of the resident users is caused by an existing replacement mode is solved.

The invention relates to the field of electric cars and new energy sources and discloses an energy storage DC rapid charging pile system, comprising an energy storage device, wherein one end of the energy storage device receives alternating current from a power supply device with a relatively low input power and outputs alternating current with relatively high output power through a charging interface after storing the electric energy for a period of time. The invention further discloses an application method of the energy storage DC rapid charging pile system. The energy storage DC rapid charging pile system and the application method thereof have the advantages that the problems that a power grid needs to be reformed and grid fluctuation can be caused easily when electric power is taken from a civil power supply line through the charging interface can be solved; stable and high-power discharging to the charging pile can be realized; the charging efficiency is improved; the interference with power supply to the charging pile due to power grid reasons can be reduced; the problem about direct connection with the civil power supply line can be solved.

The invention discloses a household transformer relationship identification method and system based on characteristic current signals. The household transformer relationship identification method comprises the following steps that step 1, a master station issues a household transformer relationship identification command to a smart meter with a characteristic current signal sending function according to an electric meter address; step 2, a current signal of a characteristic code bit is generated in an electric network by using a resistance switching device, and the switching end time is recorded locally; step 3, a target feature code bit on a power line is detected after the household transformer relationship identification command is received; 4, whether the target feature code bit is successfully detected or not is judged by a terminal with an alternating current collection function; and 5, the meter switching time and the terminal identification time are measured by the master station, the phase is identified, and the user transformer relationship is determined according to the time scale comparison. According to the method and the system, power outage is not needed, the influence caused by "co-zero", coupling and crosstalk zone problems can be well overcome by controlling the strength of the sending characteristic current signal, and the accurate identification of the household transformer relationship can be realized.

The invention relates to the field of a drop-out fuse in a distribution line of a power grid, and particularly relates to an operation method for replacing a 10kV drop-out fuse in an on-load manner. The operation method is characterized in that an insulation drainage wire bypass drop-out fuse is directly connected with the two ends of the drop-out fuse to be replaced for splitting current, and thus the 10kV drop-out fuse is replaced in the on-load manner and under the condition of continuously charging a load. Compared with the prior art, the operation method has the beneficial effects that the load on the lower end of equipment can be charged continuously in the operation period, and when the on-load operation is implemented by an electrified operation method, the delivery time and the redelivery time of the equipment can be avoided, the operation flow is shortened, and the electricity utilization of a user can not be affected in the operation period; the failure rate of 10kV primary equipment can be reduced greatly, and the power supply quality can be improved effectively; and the drop-out fuse is replaced in the on-load manner and with an insulation drainage wire, the operation is conducted by a double-man double-insulation bucket truck, the operation time is short, few tools are used, resources can be saved effectively, and the power supply reliability is improved.

The invention relates to the field of 10kV pole-mounted disconnectors, in particular to an operation method for on-load replacing of a 10kV pole-mounted disconnector. The operation method is characterized in that insulating current guiding lines are electrifiedly and directly connected, by an insulating glove operation method, to two ends of the pole-mounted disconnector for current shunting, and operations are performed through a double-man double-insulating-bucket-arm truck. Compared with the prior art, the operation method has the advantages that 1) by using the insulating current guiding line current shunting method for on-load replacing of the 10kV pole-mounted disconnector, power supply for lower-end load of equipment can be continued during operation, equipment launching and relanunching can be avoided during on-load operations utilizing an electrified method, operation process is shortened, power supply reliability is improved effectively, and power utilization of users is not influenced during the operation; 2) fault rate of 10kV primary equipment can be reduced greatly, and power supply quality is improved effectively; and 3) by the operation utilizing the double-man double-insulating-bucket-arm truck, operation time is short, few tools are used, energy is saved effectively, and power supply quality is improved.

The invention discloses a multifunctional intelligent power-saving device which is characterized by having voltage stabilizing and undervoltage outputting functions according to the lightening function of an underground parking garage; a transformer is shifted in a contactless mode so as to avoid the fluctuation of a commercial power supply; when people enter the underground parking garage, normal voltage is output by a sensing probe and all illuminating lamps are turned on; and for a moment after the people leave from the underground parking garage, standard undervoltage is output and part of illuminating lamps is turned off so as to achieve the aim of saving power. The dead hours of after midnight each day can also be set as a regular energy-saving time period; a user can set over-voltage, undervoltage and normal voltage parameters by using keys; and meanwhile, the over-voltage, undervoltage and normal voltage parameters can be displayed through a liquid crystal display screen or are remotely set and controlled through a GPRS (General Packet Radio Service) wireless network.

The invention relates to the field of power system detecting equipment, in particular to a non-home-entry type mis-sort detector of modulating and generating a low-frequency characteristic signal. Themis-sort detector is used for detecting whether a correspondence between a user's electric meter and a user's house is mis-sort. A host transmitting end is set at two sides of an air switch at the lower portion on the side of the user's electric meter. The host transmitting end transmits low-frequency characteristic signals. The low-frequency characteristic signals are transmitted through a signal transmission line. A handheld detecting end detects and receives an effective low-frequency characteristic signal on the signal transmission line. The source of the low-frequency characteristic signal is determined according to the strength and direction of the detected low-frequency characteristic signal so as to confirm whether the correspondence between the user's electric meter and the user's house is consistent and confirm whether the mis-sort exists between the user's electric meter and the user's house. Compared with the prior art, the non-home-entry type mis-sort detector of modulating and generating the low-frequency characteristic signal in the invention adopts low-frequency phase-to-phase modulation to generate the low-frequency characteristic pulse signal within 500 Hz to beinput into a user line, and greatly improves the detection accuracy.

The invention discloses an operating mechanism of a selective protection switch. The operating mechanism comprises a base, a knife switch and a contact mechanism which are assembled on the base and can rotate, a linkage connecting the knife switch with the contact mechanism, a spring assembled between the contact mechanism and the base and a jumping pin device installed on the base and used for driving the linkage to act. The operating mechanism is characterized in that the jumping pin device comprises a first jumping pin and a second jumping pin which are coaxially pivoted on the base; the first jumping pin is provided with an extension part used for interfering with the second jumping pin and driving the second jumping pin to rotate; at the same time, a torsion spring interfering with the first jumping pin to rotate is assembled on a pivot; the operating mechanism also comprises a latch linked with the linkage; and the first jumping pin and the latch interfere with each other to ensure the linkage not to act. The operating mechanism has the following advantages: the operating mechanism has the function of alarming without opening under the condition of thermal overload and can better protect the personnel and equipment in the distribution system.

The invention relates to a modular combined wind-light-diesel combined power supply system, which is characterized by comprising a generating unit, an energy storing unit, a direct-current control unit and an alternating-current control unit, wherein the generating unit, the direct-current control unit and the alternating-current control unit are connected in series; the output end of the direct-current control unit is connected with the energy storing unit; the input end of the alternating-current control unit is connected with the energy storing unit; the output end of alternating-current control unit is connected with a user load; and the generating unit comprises a wind driven generator, a photovoltaic matrix and / or a diesel generating set. The modular combined wind-light-diesel combined power supply system can adapt to installation and usage by users of different current utilization scales and different wind-light resource conditions, is suitable for plant batch production and quality control, is convenient for product allocation, maintenance, management and intensive training of personnel, and has the characteristics of flexible configuration, convenience for expanding volume, high reliability, high maintaining interchangeability, and the like.

The invention discloses a substation line protection non-power-off maintenance device and method. The device comprises a second line protection measurement and control device, a power supply module for providing power for the second line protection measurement and control device, a change-over switch QK1 and a change-over switch QK2. Contacts 2, 6, 10 and 14 of the change-over switch QK1 are respectively connected with a first test line; contacts 3, 6 and 9 of the change-over switch QK1 are electrically connected with three current input ends of the second line protection measurement and control device respectively; a contact 16 of the change-over switch QK1 is electrically connected with the ground end of the second line protection measurement and control device; and contacts 1, 5, 9 and 13 of the change-over switch QK1 are respectively connected with a second test line. When a line protection measurement and control device in a substation needs maintenance, another line protection measurement and control device is utilized to replace the original line protection measurement and control device to work, so that substation does not need to cut off power, and power use of users is not influenced.

The invention which is applicable to the field of the meter inspection technology, provides an anti-missorting checking system. The system is composed of a checking host and a checking slave unit. Thechecking host consists of a power interface, a carrier communication module, a first modem, a first signal processing module and a signal transmitting module; and the checking slave unit includes a signal receiving module, a second modem and a second signal processing module. The power interface is connected with a to-be-checked electric energy meter externally; the carrier communication module is connected to the power interface and the first modem; the first modem is connected with the first signal processing module connected with the signal transmitting module; and the signal receiving module is connected with the second modem connected with the second signal processing module. Therefore, the missorting checking efficiency is improved; and the communication conflict between the customer and the power supply company is reduced.

The invention aims at providing a switching type phase sequence switching combined conjunction box, and relates to the power field. The switching type phase sequence switching combined conjunction boxcomprises a conjunction box body, a box cover, a wiring board arranged in the conjunction box body and provided with three voltage and current wiring blocks, and a phase sequence switching switch electrically connected to the first and third voltage and current wiring blocks. Each of the first and third voltage and current wiring blocks comprises an electrical connection assembly and a switchingassembly; the electrical connection assembly comprises a voltage electrical connection column and middle, left and right current electrical connection columns; the switching assembly comprises a voltage switching terminal and left and right current switching terminals; and the middle electrical connection column is electrically connected with the right / left current electrical connection column. When being used for phase sequence adjustment, the switching type phase sequence switching combined conjunction box does not influence power utilization of users, and is higher in phase switching efficiency and higher in safety level.

The invention provides a power distribution cabinet, which is characterized in that a cabinet body is provided with at least one switch unit, a monitoring terminal and an acquisition terminal; the switch unit is provided with an inlet wire connector assembly, an outlet wire connector assembly and a first signal connector; the monitoring terminal is provided with a first signal connector assembly;the acquisition terminal is provided with a second signal connector and a second signal connector assembly; the switch unit is connected with the second signal connector of the acquisition terminal through the first signal connector in an inserted manner; and the monitoring terminal is connected with the second signal connector assembly of the acquisition terminal through the first signal connector assembly in an inserted manner. The power distribution cabinet is simple in structure and convenient for standardized production, the switch unit, the monitoring terminal and the acquisition terminal can realize modular production, the connection among the switch unit, the monitoring terminal and the acquisition terminal is quick, accurate and stable, and the production efficiency is high. Meanwhile, the switch unit is simple in structure and convenient for miniaturized production. The power distribution cabinet can be provided with multiple columns of switch units at the same time, user requirements are met, the cost is reduced, local or remote monitoring, management, protection and control functions are achieved, and the working efficiency and the intelligent degree of the power distribution cabinet are improved.

The invention discloses a jumper sag measuring device which comprises a support mechanism, positioning mechanisms and a measuring mechanism, wherein a cross elbow is mounted at the upper end of the support mechanism; the positioning mechanisms are respectively mounted on two sides of the cross elbow; each of the support mechanism and the positioning mechanisms respectively comprises a support rod and a positioning rod; the support rods and the positioning rods are all composed of high-voltage insulating telescopic rods; the measuring mechanism comprises a rocker rotating wheel, a measuring line and a measuring cone; the rocker rotating wheel is mounted at the lower end of the support mechanism; one end of the measuring rope is connected with the winch of the rocker rotating wheel; the measuring cone is mounted at the other end of the measuring rope after the other end of the measuring rope penetrates through the top of the cross elbow. Compared with the prior art, the jumper sag measuring device is capable of implementing live line measurement, the measuring time can be greatly shortened, and moreover only one operator is needed to complete the measurement on a tower, so that the working intensity is greatly alleviated, and the working efficiency is high; length measurement data of a jumper sag is relatively accurate, and thus an effective and professional measuring tool can be provided for a windage yaw prevention transformation construction decision of new or old lines.

The invention provides an underground garage charging pile system, comprising a main control device, a main circuit, sub-circuits and branch circuits connected to each charging pile, wherein the maincontrol device is connected to the main circuit, the main circuit is connected with each sub-circuit, each sub-circuit is connected with each branch circuit, electric control switches are installed oneach sub-circuit and each branch circuit, the main control device is connected with each electric control switch to control the on-off state of each circuit, a plurality of temperature sensors are uniformly distributed along each sub-circuit and each branch circuit, the main control device is connected with each temperature sensor for collecting the heating temperature of each circuit, when the temperature rise collected by the temperature sensor on a certain circuit exceeds a threshold, the main control device controls to turn off the electric control switches on the corresponding circuits step by step until the temperature drops to a set value, and then turns on the electric control switches on the corresponding circuits step by step again. The underground garage charging pile system has the advantages that the design is scientific, electronic components on the circuits can be prevented from being burnt down, and potential safety hazards of a power grid can be reduced.

The invention discloses a low-voltage transformer area topology automatic identification method, which belongs to the field of power distribution automation in a power system, and comprises three steps of user-transformer relationship identification, topology branch identification and topology hierarchical relationship calculation. The beneficial effects of the invention are that the topological recognition of the low-voltage power distribution network transformer area is achieved based on the three-phase commutation principle, and accuracy is high; 2, the power utilization of users is not influenced, and a certain inhibition effect is achieved on the three-phase imbalance phenomenon of the transformer area; when the three phases are unbalanced, the conversion of the phase sequence enablesthe heavy-load phase and the non-heavy-load phase to be mutually converted, thereby reducing the degree of unbalance among the three phases, and the phase sequence conversion of the multi-stage distribution box can better reduce the degree of unbalance among the three phases of the distribution box at each stage in a transformer area, thereby having a very good practical value.

The invention discloses a jumper sag measuring device which comprises a support mechanism, positioning mechanisms and a measuring mechanism, wherein a cross elbow is mounted at the upper end of the support mechanism; the positioning mechanisms are respectively mounted on two sides of the cross elbow; each of the support mechanism and the positioning mechanisms respectively comprises a support rod and a positioning rod; the support rods and the positioning rods are all composed of high-voltage insulating telescopic rods; the measuring mechanism comprises a rocker rotating wheel, a measuring line and a measuring cone; the rocker rotating wheel is mounted at the lower end of the support mechanism; one end of the measuring rope is connected with the winch of the rocker rotating wheel; the measuring cone is mounted at the other end of the measuring rope after the other end of the measuring rope penetrates through the top of the cross elbow. Compared with the prior art, the jumper sag measuring device is capable of implementing live line measurement, the measuring time can be greatly shortened, and moreover only one operator is needed to complete the measurement on a tower, so that the working intensity is greatly alleviated, and the working efficiency is high; length measurement data of a jumper sag is relatively accurate, and thus an effective and professional measuring tool can be provided for a windage yaw prevention transformation construction decision of new or old lines.

The invention provides an intelligent full automatic alarming and water pumping security and protection system for ship cabin water leakage. The intelligent full automatic alarming and water pumping security and protection system comprises a floating ball, a controller, a starter, a diesel engine, an electric pump, an electric generator and an accumulator which are mounted at the bottom of a ship cabin; the floating ball, the electric generator, the electric pump and the accumulator are connected with the controller; the starter is connected with the accumulator through the controller; the floating ball is used for sensing and detecting the water level of the ship cabin, and transmitting a signal to the controller; the accumulator supply electricity to the starter; the starter is used for the diesel engine; the diesel engine drives the electric generator to generate electricity through a transmission mechanism; the electric generator charges the accumulator and supply electricity to the electric pump through the controller; and the electric pump is used for water pumping. The whole project is intelligent and automatic, manual operation is not needed, automatic water pumping is conducted after ship cabin water leakage is sensed and detected, after water pumping is finished, automatic shutdown is conducted, in the period, the accumulator is automatically charged and protected, in addition, a water level alarm and a mobile phone annunciator take the automatic alarming effect, the work operation time is lasting, and convenience, security and guarantee are achieved.

The invention provides a mechanical device for an automatic output voltage regulator for a transformer tap switch. The mechanical device is arranged at the top part of a tap switch (29) and comprises a regulating rotating shaft (22) of the tap switch, a gear positioning tooth (31) and a latch (30); the mechanical device is characterized in that the top end of the regulating rotating shaft (22) of the tap switch passes through a rotating shaft perforating hole of a fixed substrate (26); a substrate fixing ring (21) and a nut sleeve the regulating rotating shaft; the fixed substrate is positioned through upper and lower clamping; the fixed substrate is provided with a positive and negative rotation stepper motor (24) and a transmission part (25) of the positive and negative rotation stepper motor; the fixed substrate is also provided with an infrared transmitting tube and a receiving tube; the positive and negative rotation stepper motor is connected with the regulating rotating shaft through the transmission part; and the gear positioning tooth (31) and the latch (30) are oppositely arranged on the same plane. The mechanical device and a special matched electrical appliance are combined into the automatic regulator; and the mechanical device is applied to output voltage regulation of the transformer tap switch, has the advantages of being timely and fine in regulation and control, time-saving, labor-saving, safe and high in efficiency, and can be electrified and remotely controlled for automatic regulation.

The present invention provides an electric energy meter calibration device and a usage method thereof. The electric energy meter calibration device comprises a box body and a box cover, an electric energy meter on-site calibration instrument and a standby electric energy meter are arranged inside the box body, and plugs are arranged between the wiring ends of the electric energy meter on-site calibration instrument and the wiring ends of the standby electric energy meter. Each wiring end of the electric energy meter on-site calibration instrument corresponds to one plug, and each wiring end of the standby electric energy meter corresponds to one plug. The plugs comprise the calibration instrument wafers and the electric energy meter wafers, the calibration instrument wafers are connected with the wiring ends of the electric energy meter on-site calibration instrument, and the electric energy meter wafers are connected with the wiring ends of the standby electric energy meter. Insulators and switches are arranged between the calibration instrument wafers and the electric energy meter wafers, the plugs are equipped with a socket cooperatively, and the socket is equipped with the first elastic wafers and the second elastic wafers. By adopting the above technical scheme, and according to the present invention, the electric energy meters can be calibrated on sites on the condition of not stopping the power supply, and the power consumption of the users is not influenced.

The invention discloses a method and system for dynamically regulating and controlling the power supply capacity of a charging pile and related equipment. The method comprises the steps: acquiring an inputted regional power supply capacity parameter of a corresponding management region, and monitoring the operation parameters of a distribution network area to obtain real-time monitoring data; and according to the regional power supply capacity parameters and the real-time monitoring data, acquiring a required power supply capacity value of the charging pile cluster, and according to the required power supply capacity value, regulating and controlling the output power of charging piles. According to the method, the adjustability of the energy type load of the new energy automobile is applied, and active and dynamic power supply capacity regulation and control are performed on the charging pile cluster according to the power supply capacity of the distribution network area and the load of the corresponding management area, so that the problems of distribution transformation and line overload and the like can be effectively avoided, safe operation of a power grid is guaranteed, the distribution network construction investment is reduced, the charging facility access capability and the use efficiency of the distribution network are improved, and the stable operation of the distribution network is ensured.

The invention relates to the field of electric cars and new energy sources and discloses an energy storage DC rapid charging pile system, comprising an energy storage device, wherein one end of the energy storage device receives alternating current from a power supply device with a relatively low input power and outputs alternating current with relatively high output power through a charging interface after storing the electric energy for a period of time. The invention further discloses an application method of the energy storage DC rapid charging pile system. The energy storage DC rapid charging pile system and the application method thereof have the advantages that the problems that a power grid needs to be reformed and grid fluctuation can be caused easily when electric power is taken from a civil power supply line through the charging interface can be solved; stable and high-power discharging to the charging pile can be realized; the charging efficiency is improved; the interference with power supply to the charging pile due to power grid reasons can be reduced; the problem about direct connection with the civil power supply line can be solved.

The invention discloses an operating mechanism of a selective protection switch. The operating mechanism comprises a base, a knife switch and a contact mechanism which are assembled on the base and can rotate, a linkage connecting the knife switch with the contact mechanism, a spring assembled between the contact mechanism and the base and a jumping pin device installed on the base and used for driving the linkage to act. The operating mechanism is characterized in that the jumping pin device comprises a first jumping pin and a second jumping pin which are coaxially pivoted on the base; the first jumping pin is provided with an extension part used for interfering with the second jumping pin and driving the second jumping pin to rotate; at the same time, a torsion spring interfering with the first jumping pin to rotate is assembled on a pivot; the operating mechanism also comprises a latch linked with the linkage; and the first jumping pin and the latch interfere with each other to ensure the linkage not to act. The operating mechanism has the following advantages: the operating mechanism has the function of alarming without opening under the condition of thermal overload and can better protect the personnel and equipment in the distribution system.

The invention relates to the technical field of insulator nut fastening rods, in particular to an insulator nut hot-line work fastening rod .The insulator nut hot-line work fastening rod comprises an insulation operating rod, a socket spanner and a fastener .The socket spanner is fixedly installed at the upper end of the insulation operating rod, a lower joint jaw is fixedly connected to the lower end of the socket spanner, an upper joint jaw is fixed to the upper end of the insulation operating rod, and the lower joint jaw and the upper joint jaw are fixedly connected together through the detachable fastener .The upper joint jaw comprises a socket spanner connecting cap and an upper joint jaw piece .The structure is reasonable and compact, and use is convenient .An operator holds the insulation operating rod to fasten a high electrified insulator nut through the socket spanner connected to the upper end of the insulation operating rod, no halt or pole climbing is needed, operation is simple, use is convenient, and power utilization is not affected .The insulation operating rod and the socket spanner can be disassembled to be placed and operated respectively, and therefore use is more flexible.

The invention relates to a method for on-load shearing and reconnecting a 10kV overhead bare conductor, which comprises the following steps: S1, hanging a conductor clamping device, a tension traction conversion tool, a backup protection conductor clamping device and an insulating rope, S2, installing an insulating drainage wire, S3, measuring current, S4, cutting off the conductor and connecting and pressing the conductors on two sides by using a conductor connecting fitting, S5, measuring current, S6, cutting off the conductor, and S5, reconnecting the conductor. S6, the tension traction conversion tool and the wire clamping device are dismantled; the tension traction conversion tool has the advantages that when the wire is cut off and the wire connection fitting is used for connecting and pressing the wires on the two sides, the insulation drainage wire is mounted on the tension traction conversion tool, so that the current of the wire can be shunted to the insulation drainage wire, and after the wire connection fitting is connected and pressed with the wires on the two sides, the current circulation can be realized through the wire connection fitting; therefore, reconnection of the overhead bare conductor can be realized in an on-load state, power failure of a user is avoided, the conductor operates in an on-load manner in the whole process, power utilization of any user is not affected, and power utilization stability is guaranteed.

The invention provides a hot-plug type digital power distribution terminal, and the terminal comprises a power distribution terminal main body and a base; the power distribution terminal main body comprises a main control module, and the main control module comprises an operational amplifier unit, a CPU unit, a communication unit, a power supply unit and a first connector; the base comprises a base module; the base module comprises a second connector, a voltage sampling circuit, a current sampling circuit and a terminal; the first connector on the power distribution terminal main body is connected with the second connector on the base, and the strong and weak electricity of the base module is separately designed, so that the hot plug of the digital power distribution terminal is realized;the digital power distribution terminal main body is convenient to install and maintain; when the power distribution terminal breaks down, the power distribution terminal can be directly replaced, a drawer switch main loop of a power distribution cabinet does not need to be powered off, thereby reducing the maintenance cost, reducing the loosening and falling probability of other connecting terminals in the switch unit, preventing operators from electric shock, and improving the working efficiency.

The invention relates to a modular combined wind-light-diesel combined power supply system, which is characterized by comprising a generating unit, an energy storing unit, a direct-current control unit and an alternating-current control unit, wherein the generating unit, the direct-current control unit and the alternating-current control unit are connected in series; the output end of the direct-current control unit is connected with the energy storing unit; the input end of the alternating-current control unit is connected with the energy storing unit; the output end of alternating-current control unit is connected with a user load; and the generating unit comprises a wind driven generator, a photovoltaic matrix and / or a diesel generating set. The modular combined wind-light-diesel combined power supply system can adapt to installation and usage by users of different current utilization scales and different wind-light resource conditions, is suitable for plant batch production and quality control, is convenient for product allocation, maintenance, management and intensive training of personnel, and has the characteristics of flexible configuration, convenience for expanding volume, high reliability, high maintaining interchangeability, and the like.