34results about How to "Real-time monitoring of stability" patented technology

The invention discloses an electromagnetic transient stability device of a distributed power generation system and a method. The electromagnetic transient stability device is connected into an alternating current bus of the distributed power generation system in parallel, and comprises a power unit, a filter unit, a detecting unit, a control unit and an impedance calculation unit, wherein the output end of the power unit is connected with the input end of the filter unit; the output end of the filter unit is connected into the alternating current bus of the system in parallel; the input end of the detecting unit is connected with the output end of the filter unit; the input end of the impedance calculation unit is connected with the output end of the detecting unit; the output end of the impedance calculation unit is connected with the input end of the control unit; and the output end of the control unit is connected with the control end of the power unit. The detecting unit samples output voltage and current signals of the electromagnetic transient stability device; the impedance calculation unit calculates the impedance of an external system according to the output voltage and current signals; the control unit resets the self impedance of the device according to the impedance, so that resonant vibration is damped; the grid-connected current waveform quality is improved; and the grid-connected stability is improved.

The invention discloses an offshore wind power pile foundation and a stability monitoring method thereof. The offshore wind power pile foundation comprises a pile foundation main body and at least onescouring pit monitoring device fixed on the pile foundation main body. The scouring pit monitoring device comprises a monitoring main body, a lifting part controlling the monitoring main body to movetowards a seabed and a displacement measuring component, wherein the lifting part is used for driving the monitoring main body to move towards the seabed, and the displacement measuring component detects motion displacement of the monitoring main body. The stability monitoring method of the offshore wind power pile foundation is to calculate the depth of a scouring pit next to the monitored offshore wind power pile foundation through the initial position and the termination position of the monitoring main body. Compared with the prior art, the offshore wind power pile foundation uses a yaw device to realize stability monitoring in both reciprocating flow and non-directional flow. Meanwhile, a rolling bearing is utilized to realize rotation of the scouring pit monitoring device. The offshore wind power pile foundation is simple in structure and convenient to operate and achieves precise scour prevention.

A test device and test method for comprehensive performance testing and debugging of a rotary drilling rig. The dynamometer motor in the test device is set on the foundation; the torsion transmission gearbox is fixed on the gearbox anchor plate through the gearbox adapter plate; The gearbox is installed on the torque transmission gearbox, and the speed-increasing angle gearbox is connected with the dynamometer motor through the transmission shaft, torque sensor and motor coupling in turn; the drive sleeve is inserted into the connecting shaft of the torque transmission gearbox, and the lower end of the drive sleeve is passed through Support Ⅰ, slewing support, tension pressure sensor are connected with the hydraulic load cylinder, the slewing support is fixed in the foundation, and the hydraulic load cylinder is connected to the hydraulic station through the hydraulic pipeline; among them, the tension pressure sensor and the pressure control valve of the load cylinder in the hydraulic station Connected to the computer software control system; the torque sensor is connected to the computer software control system; the dynamometer motor is connected in parallel with the power distribution room power grid and the water-cooled resistance box. The invention has more precise control, can simulate actual working conditions and has stronger comprehensive data analysis ability.

The invention relates to a high-power pulse microwave biological irradiation system, and belongs to the field of electromagnetic radiation biological effect research. The system includes multiple sets of high-power microwave transmission launch assemblies, support platforms and microwave anechoic chambers; each set of high-power microwave transmission launch assemblies includes high-power waveguide directional couplers, peak power probes, transmission waveguides, high-power waveguide rotary joints and launch antennas; The coupling end of the high-power waveguide directional coupler is connected to the peak power probe to monitor the power of the high-power microwave signal. The output end is sent to the high-power rotary joint through the transmission waveguide to adjust the launch angle of the antenna. On the platform, the biological sample is irradiated; all devices are airtight and interconnected; the high-power rotary joint, the transmitting antenna and the supporting platform are in a microwave anechoic chamber. The present invention effectively solves the technical problem that simultaneous composite irradiation cannot be achieved due to high peak power of high-power microwaves.

The invention discloses an intelligent bearing support device with adjustable geometric dimensions. The intelligent bearing support device comprises a slide bearing support mechanism with adjustable geometric dimensions, and a detection control system, wherein the slide bearing support mechanism with the adjustable geometric dimensions is divided into a slide bearing and a support structure, the support structure is divided into a support seat and a support cover which are oppositely installed, the bearing is installed in the support structure, the bearing is divided into an upper bushing and a lower bushing which are oppositely installed, the upper bushing is fixed, and the lower bushing slides in the support structure up and down; and in the detection control system, a displacement sensor is installed in the vicinity of the slide bearing and connected with a state monitoring controller, the controller controls a servo motor to rotate, the servo motor drives a lead screw to rotate, the lead screw drives tapered iron to move, and the lower bushing of the bearing slides up and down due to the movement of the tapered iron. The device is capable of monitoring the running condition of a rotor in real time, adjusting the up-down slide distance of the lower bushing of the bearing through the rotation of the servo motor, judging the changed working condition, and adjusting the geometric dimensions of the bearing to ensure the stable and safe running of a rotor bearing system.

The invention discloses a real-time monitoring method for the stability of a silty submarine channel slope. The receiving system receives and converts the seabed acoustic waves into acoustic images of sedimentary profiles, and transmits the acoustic image signals of the sediments to the monitoring center through the transmission system. The monitoring center processes the transmitted acoustic images and conducts real-time monitoring and analysis of the stability of the channel slope . The real-time monitoring method for the stability of the muddy submarine channel slope provided by the invention does not affect the normal operation of the ship, and realizes all-weather real-time monitoring.

The invention discloses a suspended area light source for a satellite optical load test. According to the suspended area light source, the area light source is imaged above a load in a suspended manner by employing unmanned aerial vehicles so that problems that weight limitation of a contact type area light source and the power supply safety are avoided, and hidden risks due to falling of a support of a non-contact metal support area light source are avoided; the safety state and the stability of the area light source support are monitored in real time by employing a hovering monitoring device so that when dangers occur, an alarm is emitted or emergency shutdown measures are taken, and the reliability is greatly improved; damping isolation gaskets are configured so that the area light source support can elastically fall on a satellite cabin plate when falling in an abnormal way, and the physical impact damage to the whole satellite and load equipment can be avoided; and the installation of the equipment structure is simple, the universality is high, the power supply mode does no safety harm to the whole satellite, and the operability and the promotion value are high.

The invention discloses a method for improving the on-line calibration accuracy of an AC sampling device. The method comprises the steps of (1) connecting AC voltage and AC current into an alternating current sampling calibration device, (2) carrying out rapid sampling on the connected AC voltage and AC current and storing obtained digital signal quantity in a stack mode, (3) using digital signal processing technology, carrying out one time of computing processing per 1 / 2T, carrying out comparison with the measurement value of a front 1 / 2T, and judging whether electricity which flows in jumps or not in the time 1 / 2T, (4) capturing the stable input of the AC voltage and current through the method, if the electricity does not jump, judging that the current is stable, carrying out weighted average processing on measuring values of repeated DSP calculation, and obtaining a final measuring value, (5) comparing the final measuring value with the measuring value of the AC sampling device, and calculating the sampling error of the AC sampling device. According to the method, the working efficiency and safety of working are raised, and the test precision is high.