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

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 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.

An automatic sag measurement device for jumper wires of tower transmission lines, including a first power supply module, a second power supply module, and a first clamping frame and a second clamping frame that cooperate with the horizontal ends of the jumper wire, the first clamping frame, the second Electric push rods are installed under the clamping frame, and the lower ends of the two sets of electric push rods are respectively equipped with a photoelectric emission module and a photoelectric induction module. The induction window of the photoelectric induction module is set opposite to the emission window of the photoelectric emission module. Trigger switch, the trigger switch is connected with the signal of the infrared rangefinder fixed on the first clamping frame or the second clamping frame, the end of the electric push rod below the infrared rangefinder is equipped with a reflector plate, and the upper edge plane of the launch plate is in line with the The central points of the emission window and the sensing window are located on the same plane, and the infrared range finder is provided with a data memory, which is connected to the output terminal of the infrared range finder by signal. The invention can realize the automatic detection of jumper sag, greatly reduces the labor intensity, and the measurement data is more accurate.

The invention discloses an automatic topological identification method for a low-voltage station area, which belongs to the field of power distribution automation in a power system, and includes three steps of household transformer relationship identification, topological branch identification, and topological hierarchical relationship calculation. The beneficial effects of the present invention are: 1. Based on the principle of three-phase commutation, the topology identification of the low-voltage distribution network station area is realized with high accuracy; 2. It does not affect the power consumption of users, and has a certain inhibitory effect on the three-phase unbalance phenomenon in the station area. When the three phases are unbalanced, the transformation of the phase sequence will exchange the heavy load phase and the non-heavy load phase, thereby reducing the unbalance between the three phases. The phase sequence transformation of the multi-level distribution box can better reduce the The three-phase unbalance of distribution boxes at all levels in the district has good practical value.

The invention relates to the field of the hot line work of a 10kV power distribution network, in particular to an operation method and device for additionally arranging a column switch on a linear rod improved strain section. The method is characterized in that a lead is lifted and descended by a self-hanging insulation cross bar in an assisting mode, then the column switch is positioned by an insulation bucket arm vehicle, and equipment does not need to transfer and carry a load in the operation flow of the whole column switch arranging process. Compared with the prior art, the operation method and device for additionally arranging the column switch on the linear rod improved strain section have the beneficial effects that (1) a hot line work technology is adopted, the power of enterprises at the lower end of the line is not influenced, after being mounted, the column switch can be directly put into use without the need of reducing the lower end load of an operation point, the number of people participating in the operation is reduced and the whole operation time is shortened; (2) the column switch is hoisted and mounted by an insulation crane arm of the insulation bucket arm vehicle, so the labor intensity of operation staff in the insulation bucket is reduced; participating of hoisting vehicles is reduced and the operation difficulty is reduced.

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.