Abstract: The disclosure provides a mixed-mode temperature measurement communication phase conductor and a temperature measurement communication system. The mixed-mode temperature measurement communication phase conductor includes: a stainless sleeving optical unit and a support line hinged with the stainless sleeving optical unit, wherein an aluminum wire is hinged outside the stainless sleeving optical unit and the support line; the stainless sleeving optical unit includes: multiple single-mode fibers and at least one multi-mode fiber, wherein fibers in the stainless sleeving optical unit are mutually hinged. The disclosure realizes whole-distance temperature measurement of conductor by setting the single-mode fiber to perform communication and the multi-mode fiber to perform temperature measurement.

Abstract: The present invention discloses a fiber surface treatment composition, characterized in that the composition is comprised of a silane coupling agent, a polymer and a water repellent agent, wherein the polymer is a copolymer of a polyurethane/acrylic acid polymer, wherein the acrylic polymer is selected from the group consisting of polyacrylic acid, polyacrylates or acrylic acid-acrylic acid ester copolymers. The invention also discloses an insulating fiber having the composition on its surface, the preparation method for it, and an insulating yarn and an insulated cord. The insulated fibers, yarns and ropes of the invention have the advantages of moisture resistance, washing resistance, ultraviolet aging resistance and the like. Particularly, the insulated ropes can be applied to the charging work of transmission lines, especially the UHV transmission lines.

Abstract: Embodiments of the present invention provide a method and an apparatus for data quality management and control. The method includes: receiving application information transmitted by a service sub-system; resolving datasheet operation trigger information to obtain datasheet flow information; receiving user information transmitted by the service sub-system and a target datasheet transmitted by the service sub-system; if a name of the target datasheet is different from a plurality of datasheet names corresponding to the service sub-system identifier, then instructing the service sub-system to store the target datasheet into a data center; if the datasheet operation information is updating a datasheet, instructing the data center to replace datasheet contents corresponding to the datasheet name with contents of the target datasheet.

Abstract: The present disclosure discloses a control system for enhancing a frequency support capability of a wind turbine generator system. The control system includes a wind turbine, a gearbox, an electric generator and a converter. The control system is characterized by further including a supercapacitor energy storage apparatus, which includes a DC-DC converter and a supercapacitor. The converter includes DC buses, and the supercapacitor is electrically connected to the DC buses via the DC-DC converter. The supercapacitor may be orderly charged or discharged according to an operating state of the wind turbine generator system to maintain its operating condition, and has a superior reliability.

Abstract: The present invention discloses a method for lightning stroke identification and location on optical fiber composite overhead ground wire. In the method, according to the property that the lightning stroke will cause a sudden temperature rise at the lightning stroke position on the optical fiber composite overhead ground wire, optical fiber resources in the optical fiber composite overhead ground wire and the high-sensitivity detection and high-precision event locating capability of a distributed optical fiber temperature sensor can be fully utilized.

Abstract: Provided are a control method and system for enhancing an endurance capability to an abnormal voltage of a wind turbine generator system. The control method, includes; providing a doubly-fed wind turbine generator system connected to a power grid; detecting a voltage of the power grid, and determining whether the voltage of the power grid has a fault; when the voltage of the power grid has a fault, detecting a voltage of the DC buses, and determining whether the voltage of the DC buses exceeds a limit value; when the voltage of the DC buses exceeds the limit value, performing integrated system coordination control according to an abnormal operating condition mode; and when the voltage of the power grid returns to a normal range, performing integrated system coordination control on the according to a normal operating condition mode.

Abstract: A concomitant impedance protection method for a half-wavelength power transmission line includes that: three-phase currents and three-phase voltages of a relay protection device mounting position at an M side and a relay protection device mounting position at an N side of the half-wavelength power transmission line are acquired respectively; it is judged whether starting amounts of an M side and an N side meet starting conditions or not; a failure point F is determined according to a time difference when the starting amounts of the M side and the N side meet the starting conditions; and a relay protection action of the half-wavelength power transmission line is started according to concomitant impedance of the half-wavelength power transmission line.

Abstract: The present invention relates to a method for generating a current differential protection supernode based on an electrical topology of a regional distribution network, which belongs to the fields of automation of electrical power systems and relay protection. The present invention generates several supernode differential protection elements, i.e., differential protection objects, and backup differential protection elements by circularly using a depth-first search method according to the inputted branch-node associative data table reflecting the electrical topology of the distribution network. the present invention can accurately located and quickly isolate the faults in the distribution network system, reduce the probability of power cut in the non-fault lines, reduce the coverage of power cut, quickly reconstruct and self-heal the distribution network, and solve the effect of the distributed access system on the distribution network protection.

Abstract: The present invention discloses a novel Unified Power Flow Controller UPFC and its control method. Supposing that one end of DC converter is connected to the DC transmission line of HVDC converter station or substation and the other end is connected to the DC side of a series converter, the AC output voltage of the series converter can be controlled to regulate the line power of the UPFC for operation in UPFC and SSSC mode. In addition, when the number of transformers and shunt converters is decreased at the shunt side of the UPFC, the HVDC Converter Station can be used to provide active power for the series converter of UPFC, which can effectively reduce operation costs and ensure stable operation of power grid. Therefore, there is a bright application prospect for the invention.

Abstract: A single-phase-to-earth fault processing device for a neutral non-effectively grounded distribution network includes a split-phase arc quenching device connected between earth and a three-phase bus of the distribution network, and a controller with an input end connected with a single-phase-to-earth phase selection device of the distribution network. The split-phase arc quenching device includes a multiphase switching device which operates independently for each phase, and a fuse connected in series with the multiphase switching device. The controller is for controlling opening and closing of three single-phase switches in the multiphase switching device. A single-phase-to-earth fault processing method firstly controls the split-phase arc quenching device to preprocess the fault. If the fault still exists, through a ground resistor a zero-sequence current is generated on a fault line.

Abstract: The present invention discloses a Bipolar VSC-HVDC and UPFC Hybrid Topology and its operation method. The first control circuit includes a positive and a negative circuit at the series side, in which the VSC converter can operate in bipolar mode; the second control circuit includes a positive and a negative circuit, in which the VSC converter can operate in bipolar mode; the third control circuit is the same as the second control circuit in terms of structure; the positive electrode and negative electrode of the second control circuit are connected to the DC bus via a DC breaker respectively; the other end of the DC transmission line is connected to the third control circuit via a DC breaker.

Abstract: The invention relates to a parallelization method for black-start subsystems of a power grid with external support, which includes, after power blackout, partitioning the power grid into subsystems, and respectively performing black-start on the subsystems based on a power grid black-start research scheme, performing stability check on each subsystem, performing voltage calculation on parallel lines between the subsystems, checking the parallelizing simulation of the subsystems, and determining a feasible parallelizing path and a recommendable charging direction.

Abstract: The present invention discloses a novel Unified Power Flow Controller UPFC and its control method. Supposing that one end of DC converter is connected to the DC transmission line of HVDC converter station or substation and the other end is connected to the DC side of a series converter, the AC output voltage of the series converter can be controlled to regulate the line power of the UPFC for operation in UPFC and SSSC mode. In addition, when the number of transformers and shunt converters is decreased at the shunt side of the UPFC, the HVDC Converter Station can be used to provide active power for the series converter of UPFC, which can effectively reduce operation costs and ensure stable operation of power grid. Therefore, there is a bright application prospect for the invention.

Abstract: A method for controlling charging and discharging of an electric vehicle, the method comprising: first, analyzing information such as the battery status and the history default rate of electric vehicles applying for joining a power-grid charging and discharging service, and screening out an electric vehicle that can participate in the charging and discharging service for electric vehicles in the future; then, determining an optimal combination state of a generator set and the electric vehicle by using a method of electric energy transmission cost comparison; and further monitoring in real time the status of the electric vehicle during charging and discharging, and performing real-time power control on the electric vehicle, whereby an electric vehicle aggregator not only can meet the requirements on the charging and discharging service of the power system, but also can implement energy management and real-time control of the electric vehicles during charging and discharging, thereby reducing the effect of char

Abstract: The present invention discloses a Bipolar VSC-HVDC and UPFC Hybrid Topology and its operation method. The first control circuit includes a positive and a negative circuit at the series side, in which the VSC converter can operate in bipolar mode; the second control circuit includes a positive and a negative circuit, in which the VSC converter can operate in bipolar mode; the third control circuit is the same as the second control circuit in terms of structure; the positive electrode and negative electrode of the second control circuit are connected to the DC bus via a DC breaker respectively; the other end of the DC transmission line is connected to the third control circuit via a DC breaker.

Abstract: A standard conformance testing system and method for a CIM/E model of a power system and a storage medium include: converting the standards “Power Grid Common Model Description Specification (GB/T 30149)” and “Power Grid Operating Model Data Exchange Specification (DL/T 1380)” into practically operable testing rules, and performing automatic generation and verification of a CIM/E standard model and defect model. The testing system and method can improve the comprehensiveness and standardization of a CIM/E model standard compliance test, improving testing efficiency, promoting the level of standardization according to the CIM/E model in a power system software development process, and real time data exchange and interoperation between respective application systems, effectively supporting the safe and stable operation of a power grid.

Abstract: An electric vehicle for routing inspection of power transmission lines, includes a body; a running mechanism mounted to the body, comprising a front wheel and a rear wheel connected by a cross beam and rolling on the cable; an obstacle sensor and a cam rotatably mounted to the cross beam, the cam rotating to roll onto the cable after an obstacle is detected on the cable such that the front wheel is raised to a position above the cable, and the cam continuing rolling on the cable after the front wheel passes the obstacle such that the front portion of the cross beam falls back downwards and the front wheel then falls back onto the cable, a hanging seat rotatably hanging to the body and a control device at least partially disposed in the hanging seat and comprising a braking device.

Abstract: The present invention relates to a prevention method of abnormal action protection of UHV regulating compensation transformer with no-load input, the prevention method includes: first determining a value of differential current of regulating compensation transformer, if the value of differential current is smaller than a pre-setting threshold, then, identifying whether an uninterruptible point of differential current waveform meets an pre-setting regulation according to original value of differential current or sampling value of differential difference current, and determining comprehensively whether the regulating compensation transformer is in no-load input or in fault directly with a value of second harmonic content of logic differential current together; if a value of differential current before pre-setting period is larger than the pre-setting threshold, the regulating compensation transformer is diagnosed to have external CT saturation, determining comprehensively whether the regulating compensation tra

Abstract: The invention relates to a method of differential protection in the power distribution networks based on phase difference principles. The method comprises the following steps: collecting the current and voltage signals of each loading switch; calculating phase difference between the corresponding currents at two adjacent loading switches, wherein at least one of the two adjacent loading switches accords with ?I? max>n·?IT+?Idz; tripping the two adjacent loading switches if the phase difference corresponding to the two adjacent loading switches being greater than a threshold then a section between the two adjacent loading switches being determined as a fault section. The method only needs to calculate the phase difference between the corresponding currents at the two adjacent loading switches, and achieves the fault determination according to the phase difference being greater than the threshold.

Abstract: The invention provides a lithium battery and redox flow battery energy storage systems hybrid energy storage power station real-time power distribution method and system. The system comprises a communication module, a data storage and management module, a gross power coordination control module and a real-time power distribution module. The said method and system not only can complete the real-time distribution of each battery energy storage units in the battery energy storage station, but also the aims of effective control and distribution of the lithium-liquid flow cell combined energy storage power station and aims of effective control and distribution of the lithium-flow flow joint energy storage power station real-time power can be achieved.