708results about How to "Improve the quality of power supply" patented technology

The invention provides a distribution network automatic system based on broadband wireless communication and a realization method thereof. The distribution network automatic system comprises a distribution transformer data collecting and monitoring device, a broadband wireless communication network and a monitoring center, wherein the distribution transformer data collecting and monitoring device is arranged in a transformer site for collecting and processing electric power parameters, transmitting data to the monitoring center by the broadband wireless communication network so as to responds to a control command sent by the monitoring center. In the realization method, the distribution transformer data collecting and monitoring device is connected with the monitoring center by the wireless communication network, a protocol in coincidence with electric power 101 protocol for the data transmission is set; and the distribution transform data collecting and monitoring device collects and processes the existing distribution transform parameters of the distribution transformer and responds to the control command from the monitoring center. The invention adopts a modular system architecture design, has upward and downward compatibility, and can realize various wireless broadband module communication services; in addition, the design of stipulations of an agreement of the monitoring center is based on the electric power 101 protocol and is compatible with protocols realizing different versions.

The invention relates to an area intelligent power distribution network system. Based on a management platform with a main station, a feed line, a power distribution network and centralized checking in one body, data in an area is centralized in a low voltage distribution information system for processing. The low voltage distribution information system is background application software with distribution monitoring metering, low voltage reactive compensation, a user electric quantity centralized checking system, a load control management system, and harmonic wave monitoring analysis in one body, and automation of acquisition and management of low voltage distribution network data is realized. According to the system, intelligent safety monitoring is carried out on a 10 kV distribution line and a distribution terminal device, simultaneously accurate and scientific intelligent monitoring is carried out on a 400 V distribution line, an operation status of distribution transform is grasped and reasonable management is carried out according to a requirement, by utilizing information positioning and navigation of the power distribution network, timely reaction can be carried out on an equipment line or fault, the fault is isolated automatically, distribution recovery is rapid, power supply quality is improved, and intelligent automatic management and control of an area intelligent power distribution network are realized.

The invention relates to an optical storage alternating current and direct current hybrid micro-grid system and a control method of the system. The system and the method are characterized in that a hybrid micro-grid comprises an alternating current micro-grid subsystem, a direct current micro-grid subsystem and a power exchange control system; the alternating current micro-grid subsystem comprises an alternating current side photovoltaic power generation unit, an alternating current load and a grid-connected interface; the direct current micro-grid subsystem comprises a direct current side photovoltaic power generation unit, a storage battery energy storage unit and a high / low voltage direct current load; the power exchange control system comprises a two-way AC / DC power converter, a transformer, a micro-grid controller and a communication system, the storage battery energy storage unit is used for controlling direct current bus voltages, and P / Q control is adopted in the two-way AC / DC power converter. Under the stabilizing effect of direct current side energy storage, the direct current micro-grid subsystem conducts photovoltaic power generation and is connected to a large power grid through the alternating current micro-grid subsystem at constant power, and the photovoltaic utilization rate is increased. By means of the control method, the power supply reliability and economical efficiency of the hybrid micro-grid are effectively improved.

The invention relates to a method and device for performing on-load scheduling on a single-phase load in the intelligent power grid field. A master controller is mounted at an input end of a three-phase wire, a secondary controller is mounted at each single-phase branch of the wire, and the master controller exchanges information with the secondary controllers through communication interfaces. When the wire power unbalanced degree is over limit, the master controller optimizes and formulates a control scheme to operate the secondary controllers to convert the single-phase load between the phases; in the conversion process, the load is free from instant power off, and the power grid is free from impact and interference; and therefore, the distribution circuit dynamically runs in a load balance state, the unbalanced consumption problem of the circuit is completely solved.

The utility model discloses a present city power network comprehensive evaluation system based on analytical hierarchy process and Delphi method. The system classifies and layers the characters of the city power network and then forms an integrated system including a plurality of layers according to the relationships and the differences between the characters of the city power network. The endmost character of the system is first evaluated, and then calculation is performed one layer after another according to definite calculation methods, finally a comprehensive and integrated evaluation of the city power network is obtained. The higher the comprehensive score, the better the whole situation of the city power network; namely, the construction technology rationality, the operation safety, the power supply quality and the operation economy of the power network all reach to a high level.

The invention relates to a method and a system for online metering and real-time monitoring of an electric transmission line. The method comprises the following steps: a measurer (1) of the electric transmission line obtains the data of the electric parameter and the electric quantity parameter of the electric transmission line and / or the physical parameter of the electric transmission line by measuring, sends the parameters to a distant main station (3); a user-end metering module (2) obtains the data of the electric quantity parameter, the required quantity parameter and / or the electric parameter of the user by measuring and sends the data of the parameters to the distant main station; the distant main station (3) carries out data storage, comparison, statistic and / or analysis to the data of every parameter, achieves the purpose of the real-time monitoring of the electric transmission line and judges the abnormal electric utilization of the user; or the measurer (1) of the electric transmission line automatically judges the abnormal electric utilization of the user and sends the information of the abnormal electric utilization to the distant main station. The method for online metering and real-time monitoring of the electric transmission line has the advantages that the running state of the electric transmission line can be monitored in real time during the automatic management of the electric energy metering, such as the illegal electric utilization or the abnormal state of the scene of the electric utilization is alarmed, and the like.

The invention discloses a networking method for a micro grid. The method is characterized in that: an AC generation source is connected with a DC bus through an AC / DC converter; a DC generation source is connected with the DC bus through a DC / DC converter; the DC bus is connected with a large power grid through a grid-connected inverter; the DC bus is connected with a power accumulator; and the AC / DC converter, the DC / DC converter and the grid-connected inverter are controlled by a system controller. The micro grid of the invention can be connected with a plurality of generation sources with different power generation properties and promote the development of micro grids. A networking structure of the DC bus can reduce the control difficulty of the micro grid and improve the power supply quality of the micro grid. The networking structure of the DC bus has a great advantage in connection of the micro grid to the large power grid and can adjust the grid-connection output active power and inactive power of the micro grid through the grid-connected inverter during grid connection in favor of the large power grid.

The invention discloses an on-line positioning method of a section with low-current ground faults and a system based on the positioning method. The method and the system are suitable for a neutral ungrounded power grid of 3-60kV. Under the operation condition of a line with single-phase ground faults, the phasor information of a zero-sequence voltage and the amplitude and phasor information of a zero-sequence current of the line are measured, and the section position of a fault point is determined according to the amplitude and phase information. The accuracy and rapidity of positioning are fully ensured, and the on-line positioning problem of single-phase ground faults of the neutral ineffectively grounded power grid and the monitoring problem of short-circuit faults between lines are effectively solved.

The invention discloses a single-stage boosting / reducing energy storage type photovoltaic grid-connected power generation control system, which comprises an energy storage type power conversion main circuit and a control system which are connected mutually. The energy storage type power conversion main circuit comprises a photovoltaic cell, an inductance and capacitance circuit network, an energystorage cell and a three-phase inverter which are connected mutually; and the control system is used for performing charging and discharging management on the energy storage cell, maximum power tracking and threshold control on the photovoltaic cell and closed-loop control on output active and reactive power of the three-phase inverter. The system finishes boosting / reducing, inversion and energy storage through single-stage power conversion, realizes the minimum inverter capacity with a simple structure, ensures the steady power of the power grid, can collect solar energy to the greatest degree, improves the power generation efficiency, realizes reactive compensation, electric peak regulation control and the like, and improves the quality of the power grid.

This invention relates to a load capacitance and voltage regulation switch characterizing in the following structure: a voltage-regulation static contactor is mounted on an insulated drum of a load capacitance-regulation part, a voltage -regulating bracket is set in the drum, a voltage-regulation dynamic contactor and a transition resistor are set on the bracket to integrate the load capacitance and voltage regulation, a set of operation unit is used between the quick unit of the capacitance and the voltage regulation parts by an electromagnetic clutch and an electric control box is set for adjusting capacitance and voltage automatically according to the change of loading current and voltage of a transformer.

The invention discloses microgrid coordination control system and method based on state transition. The microgrid coordination control system comprises a load measurement and control module, a power distribution network measurement and control module, a distributed power supply measurement and control module and an energy storage device measurement and control module which are respectively in bidirectional connection with a central controller through signal transmit-receive modules; all loads, power distribution networks, distributed power supplies and energy storage devices are connected with a microgrid bus through fling-cut switches (the distributed power supplies and the energy storage devices are provided with corresponding interfaces); all the measurement and control modules are in bidirectional connection with the corresponding fling-cut switches; one output of the distributed power supply measurement and control module is connected with a corresponding power electronic / rotary interface; the outputs of the energy storage device measurement and control module are connected with the power electronic interfaces of the energy storage devices; and the central controller sends operating instructions to all the measurement and control modules according to all acquired information, so as to achieve coordination control of all controlled elements. The system provided by the invention can meet the power quality requirement, has high reliability in power supply for sensitive loads, and achieves continuous supply to significant loads.

The invention relates to a network message monitoring and fault recording integrated device for an intelligent transformer substation. The device comprises a signal access unit, a signal processing and analyzing unit and an information output unit, wherein the signal access unit is used for receiving comprehensive signals, which contain a primary system signal and a secondary system signal of the intelligent transformer substation and transmitting the comprehensive signals to the signal processing and analyzing unit; the signal processing and analyzing unit is used for analyzing the comprehensive signals of the intelligent transformer substation; and the information output unit is used for outputting the alarm signal-containing comprehensive signal analyzing result after the analysis of the comprehensive signals. The device comprehensively analyzes the comprehensive signals, which contain the primary system signal and the secondary system signal, brings great convenience to operation, maintenance, modulation and breakdown maintenance, shortens the troubleshooting time, improves the power supply quality of the intelligent transformer substation, saves the space occupied by the traditional equipment and saves investment.

The invention discloses a power load balancing system applied to a low-voltage power distribution network. The device includes phase conversion devices and a control master station; three-phase input ends of the phase conversion devices are electrically connected with the low-voltage power distribution network; single-phase output ends of the phase conversion devices are electrically connected with electricity consumption terminals, so that the load information of the electricity consumption terminals can be transmitted to the control master station; the control master station performs computation processing, and determines electricity consumption terminals which are on phases with large total load information and require phase switching, and phase switching signals which enable the electricity consumption terminals to switch to phases with small total load information from the current phases, and transmits the phase switching signals to corresponding phase conversion devices; and the phase conversion devices switch the electricity consumption terminals and make the same connected into connection phases of the low-voltage power distribution network according to the phase switching signals, so that the load of the electricity consumption terminals can be re-distributed, and therefore, the load of the electricity consumption terminals can be uniformly distributed on the three phases of the low-voltage power distribution network. With the power load balancing system applied to the low-voltage power distribution network of the invention adopted, the distribution of the load of the electricity consumption terminals between three phases can be adjusted with continuous power supply ensured, and the three-phase load balance of the low-voltage power distribution network can be realized, and line loss can be effectively reduced, and power supply quality can be improved.

The invention discloses a virtual synchronous generator-based dynamic power compensation method of a diesel storage hybrid independent micro-grid. The method comprises a virtual synchronous generator control method for fixing virtual inertia and a damping parameter under the condition of steady-state operation of a system, a virtual synchronous generator control method for self-correcting the virtual inertia and the damping parameter under the condition of load disturbance on the system, and a virtual synchronous generator control method for negative inertia in a dynamic recovery process of a frequency of the system. By the virtual synchronous generator-based dynamic power compensation method, the frequency stability of a diesel storage hybrid independent micro-grid system comprising a micro-grid energy storage inverter under a steady-state condition is considered; reduction of frequency amplitude deviation of the system by the independent micro-grid system under the condition of the load disturbance is ensured; and fast recovery of the frequency of the system can also be ensured, so that the power supply quality of the system is effectively improved; and the virtual synchronous generator-based dynamic power compensation method can be widely applied to the independent micro-grid system for networking operation for the micro-grid energy storage inverter and a diesel generator set.

A method and a device for quickly locating faults of an overhead line on the basis of time synchronization belong to the technical field of intelligent grid distribution automation. The method for quickly locating the faults of the overhead line on the basis of time synchronization comprises a distribution overhead line and a master station and is characterized in that a plurality of distribution data collection units arranged on the distribution overhead line collect voltage signals of the distribution overhead line and current signals of each branch through the time synchronization technology, collected data with time labels are transmitted back to the master station to achieve calculation and judgment on the branch where the faults happen, and position information of a fault interval and the fault state of a line are displayed. The device consists of the distribution data collection units, a time reference unit, a communication system and a master station system. By utilizing the method, the device can automatically judge a fault section of a power supply line, provide the position information of the fault interval, especially improve accuracy of single-phase grounding fault judgement, replace with small current grounding routing system of a transformer station, reduce a power failure range, shorten line reparation time, and improve power supply reliability of a power supply system.

The invention relates to an earth leakage protection device, in particular to an intelligentized earth leakage protection device. The earth leakage protection device provided by the invention is integrated with the functions of overload, short circuit, default phase, over voltage, under voltage, electric leakage, electric shock, automatic overlap and the like, can conveniently control a multi-path earth leakage protection switch system, display load voltage, load current, leakage current and other parameters of a low-voltage alternating current net, can display current working condition of the earth leakage protection device, historical working condition of an earth leakage protection switch and other functions, has a friendly human-machine interface, can simultaneously distinguish leakage current and shock current to reduce inessential tripping of the earth leakage protection device caused by an electric circuit and equipment leakage, and can improve security of the earth leakage protection device.

The invention discloses a STATCOM (static synchronous compensator) control system adopting a droop control strategy and a control method thereof. The STATCOM control system adopting the droop control strategy comprises a direct-current side capacitor, a three-phase inverter bridge and an inductance-capacitance filter, wherein the direct-current side capacitor and the three-phase inverter bridge are connected in parallel and then connected with the inductance-capacitance filter, and the inductance-capacitance filter is connected to a PCC (Point of Common Coupling) of a power grid by a three-phase switch K through a coupling transformer T. The control method disclosed by the invention comprises the steps of real-time signal collection, computation of active power reference value P*, computation of reactive power reference value Q*, computation of frequency reference value omega* and voltage modulation amplitude reference value E*, computation of phase reference value Delta* and computation of voltage modulation signals; and only one PI (proportional integral) regulator and two droop control coefficients need to be regulated, thus the whole control method is easy to realize, and further the power system can better supply power to users safely, excellently and economically.

The invention provides a self-adapted load type distribution transformer. The self-adapted load type distribution transformer comprises a distribution transformer body unit, an on-load capacity-adjusting and voltage-adjusting integrated unit, an associated equipment unit and a comprehensive control unit, wherein the distribution transformer body unit and the on-load capacity-adjusting and voltage-adjusting integrated unit are connected in a unidirectional manner; and the on-load capacity-adjusting and voltage-adjusting integrated unit and the associated equipment unit are connected with the comprehensive control unit in a bidirectional manner respectively. According to the self-adapted load type distribution transformer disclosed by the invention, real-time operation data of the transformer, gear information of on-load capacity-adjusting switch equipment and on-load voltage-adjusting switch equipment, and equipment state information of online load phase-adjusting equipment and split-phase reactive-load compensation equipment are collected in real time, and comprehensive analysis and judgment can be carried out through a comprehensive analysis and judgment decision-making module to form a corresponding control policy and implement corresponding control operation. Economic operation manner selection, voltage adjustment, three-phase load unbalance management and reactive local balance under an on-load state of the distribution transformer can be realized, and the intelligent level of the distribution transformer and the self-adapted capability to a load are greatly improved.

The invention discloses a comprehensive analysis system and method of a power distribution network. The comprehensive analysis system comprises a data acquisition module, a comprehensive analysis module, a modification module and a verification module, wherein the data acquisition module acquires the data of the power distribution network, the comprehensive analysis module carries out comprehensive analysis on the power distribution network based on the data of the power distribution network and obtains a comprehensive analysis result of the power distribution network, the modification module makes a modification scheme for the power distribution network when the comprehensive analysis result of the power distribution network does not accord with a preset standard, and the verification module verifies the performance of the power distribution network modified according to the modification scheme. The comprehensive analysis module carries out comprehensive analysis on the power distribution network, the modification module makes the corresponding modification scheme when the analysis result does not accord with the preset standard to modify the power distribution network, and therefore the comprehensive analysis system and method of the power distribution network achieve comprehensive analysis of the power distribution network, bring convenience to technical personnel in the field for comprehensive analysis of the power distribution network, provide reference for construction, operation and management of the power distribution network, and improve the reliability of the power distribution network.

The invention provides an intelligent marshalling combination switch, comprising an AC electronic switch, a magnetic latching relay and a control circuit. The intelligent marshalling combination switch is characterized in that the control circuit is connected with at least a group of combination switches; the structure of the combination switch is that the AC electronic switch is connected in parallel with the magnetic latching relay with one-way contacts; the parallel end is connected in series with the magnetic latching relay with bidirectional contacts and the other parallel end is connected with one end of a single-phase capacitor and one end of a discharge coil; the other end of the single-phase capacitor and the other magnetic latching relay with bidirectional contacts are connected in series with each other and are connected into a return circuit. The intelligent marshalling combination switch can lead the single-phase capacitor to be freely switched without disturbance between the phase lines of the three-phase AC circuit and between the phase line and the zero line of the three-phase circuit, realizes the star-delta unequal arbitray connection of the single-phase capacitor under the control of a controller, completes adjusting the asymmetrical active load of the transformer and compensating the reactive loads at the same time, leads the transformer to be changed from the asymmetrical running to the symmetrical running, saves the power energy, and leads the power supply to have high quality and reliable running.

The invention relates to a method for reconstructing a power distribution network based on double-ant-colony optimization. The method comprises the steps of extracting a looped network, initializing parameters, searching for double ant colonies, decoding a path where each set of ants walks through, obtaining the reconstruction scheme of the power distribution network, conducting looped network detection, island detection and constraint condition detection, judging feasibility of the scheme, judging whether the number of two sets of the ants reaches the ant colony scale or not, judging whether the frequency of information exchange is achieved or not, conducting information exchange, judging whether the terminal condition is met or not, and ending and obtaining the optimum power distribution network reconstruction scheme. The deep searching method is adopted, the reconstruction of the looped network of the power distribution network on a looped network upper interconnection switch and a section switch is determined, digits participating in switch reconstruction are reduced, the problem that when the switch combinatorial dimension in the power distribution network is higher, the searching recovery scheme faces combinatorial explosion is effectively solved, the calculated amount is reduced, and the optimum speed is improved.

The invention discloses an integrated intelligent gateway machine configuration method based on unified modeling of a transformer station. The method comprises the following steps: performing the unified modeling on IEDs at a transformer station layer in advance; introducing manufacturer initial model files of all the IEDs of the transformer station; carrying out static inspection; generating SCD / SSD engineering files of unified data structures, shared by all the IEDs; when file data needs to be downloaded for specific station control layer devices, downloading the file data for specific IED devices by use of a corresponding download approach; and when databases and figure files need to be configured to the station control layer devices, based on the SCD / SSD engineering files of the unified data structure, shared by all the IED devices, configuring the needed databases and figure files for the station control layer devices by use of a unified modeling language (UML). The method provided by the invention can reduce data check work of each intelligent device, improves the intelligent debug, design and operation efficiency, effectively improves the power supply quality of the transformer station and also has the advantages of good versatility, high practicality and convenient application.

The invention relates to an operating data monitoring and alarming system of converting stations, aiming at providing the operating data monitoring and alarming system of the converting stations with excellent real time performances, remote detection function and high intelligentization degree. The operating data monitoring and alarming system of the converting stations comprises information collectors, information concentrator, an operating maintenance server and an on-duty computer terminal; the information collectors are mounted at the converting stations and used for collecting various operating data of the converting stations; the information concentrators are mounted at the converting stations and connected with the information collectors; the operating maintenance server is in communication connection with the information concentrators of the converting stations by a wireless communication network; and the operating maintenance server is in communication connection with the on-duty computer terminal by the internet. The alarming, the failure analysis and the electric quantity statistic are carried out by the wireless network; one machine has a plurality of purposes; the failure maintenance time is reduced; the electric quantity scheduling is favorable; and the power supply quality is improved.

The invention discloses a feeder automation test method with an automatic interference input function. The method includes the following steps that testers are connected with a power distribution terminal or a relay protector, the testers and a console are connected with a network, the console loads test cases, simulated data of monitoring points are obtained and transmitted to all the testers through the network, the testers control output modules themselves to output electric data, receive remote control signals sent out by the power distribution terminal or the relay protector in real time and transmit the remote control signals to the console, the console determines reactions to the remote control signals according to configurations of the test cases, the simulated data are changed through the testers, and whether the tested power distribution terminal or the relay protector and feeder automation processing logic of the tested power distribution terminal or the relay protector are correct is judged. Thus, parameters and failure processing logic of a feeder automation system are tested through electric reactions of feeders suffering from failures on a simulated power distribution network, and power supply reliability and power supply quality are greatly improved.

The invention relates to an adaptive RBF (radial basis function) neural network control technique for three-phase parallel active filters, belonging to an active power filter control technique. The invention provides an adaptive RBF neural network control method for three-phase parallel active power filters, which is used for controlling a compensation current output by a three-phase parallel active power filter through a controller, thereby eliminating harmonic waves and improving the power supply quality of a power grid. According to an adaptive control rule provided by the invention, the boundedness of weights is ensured, and the stability of the controller is proved by using a Lyapunov stability theory; and simulation results show that the control method effectively reduces the distortion factor of harmonic waves and is good in dynamic response, and when parameters change, the controller has good robustness and adaptability.

The invention relates to the field of distributed power generation and microgrids and discloses a microgrid on-grid to off-grid switching control system. The system comprises an energy-storage bidirectional converter, an on-grid switch and a controller; one side of the on-grid switch is connected with the output end of a main power source; the other side of the on-grid switch is connected with the output end of the energy-storage bidirectional converter; the output end of the energy-storage bidirectional converter is connected with a controller; if the controller receives a connection command, the controller adjusts main grid side voltage and microgrid side voltage of the on-grid switch in the same period; after the on-grid switch is closed, the energy-storage bidirectional converter converts from a voltage source mode to a current source mode and keeps current power unchanged; after on-grid time reaches set delay time, the energy-storage bidirectional converter outputs active power and reactive power. The invention further discloses a control method based on the system. By the use of the system, the problem that switching of the running mode of a microgrid causes disturbance to a load and a grid is solved, and seamless off-grid to on-grid switching is achieved.

The invention relates to a three-phase imbalance adjustment control method, a three-phase imbalance adjustment control device and a three-phase imbalance adjustment system. The actual value of three-phase imbalance is obtained according to the current of the maximum current phase and the current of the minimum current phase in currents of three phases collected, and is sent to an outer voltage loop. Then, the difference between the actual value of three-phase imbalance and a given value of three-phase imbalance is calculated. Through voltage and current closed-loop control and positive / negative-sequence dq / abc coordinate transformation, total modulating wave for making active power compensation from the maximum current phase to the minimum current phase is generated, and a control signal for adjusting the active power is generated after modulation. According to the invention, the electric energy of the three phases is redistributed according to the load demand, electric energy can be switched fast between unbalanced lines, and three-phase imbalance at the output side of a power distribution transformer can be adjusted quickly and smoothly. Moreover, the loss of power distribution lines can be reduced effectively, the output power of power distribution transformers and the safety operation ability of the power distribution system are improved, and the quality of power supply to users is improved.

The invention relates to a run-through type non-split-phase balanced power supply electrified railway traction system, belonging to the technical field of railway electric traction power supply. The system comprises traction transformators, all sections of traction networks and current equalizers, wherein, each section of traction power supply network is provided with an energy distribution regulating machine which mainly consists of a main controller, a driver, an electronic power switch bridgearm, a support capacitance arm, three electric current sensors, three voltage transducers and three reactors; A phase of the output end of each traction transformator is connected with the traction power supply network, B phase thereof is connected with the energy distribution regulating machines, and C phase thereof is connected with a steel rail; the main controller of each of the energy distribution regulating machine is connected with a control center. The invention has the advantages that split-phase power supply is changed into non-split-phase power supply, and great run-through of the traction contact network can be realized, so that safe, high speed and high-efficiency running of train can be guaranteed.

The invention discloses a multi-terminal flexible interconnected power distribution network planning method and system, and the method comprises the steps: considering the interaction among a source,a network, a load and a storage, coordinating the respective benefit demands of a distributed power supply operator, a power grid company and a power user, combining the system planning with the operation optimization, and proposing a source-network-load-storage three-layer coordinated planning model for a multi-terminal flexible interconnected power distribution network, processing the uncertainty problem of the distributed power supply and the load by using a scene analysis method, and solving the model by using a hybrid algorithm formed based on a simulated annealing algorithm and an interior point method. According to the invention, benefit requirements of different subjects are considered, friendly interaction of a source, a network, a load and storage is promoted, respective benefitsof a DG operator and a power user are guaranteed, the operation level of the system can be improved, and the power supply quality and economy of system operation are improved.

The invention discloses a wireless sensor network device of a photovoltaic power station, which relates to the technical field of solar photovoltaic power stations, and comprises a network coordinator, a plurality of routing nodes, a plurality of module sensor nodes and an environmental sensor node. The device transfers information of various photovoltaic components to the routing nodes from the module sensor nodes, makes the routing nodes collected to the network coordinator, and also transfers environmental information acquired by the environmental sensor node to the network coordinator through the routing nodes at the same time, and then the network coordinator realizes an interface between data information and the internet; people can promptly know work and environmental information of the photovoltaic components, and can accurately diagnose and position by performing real-time detection, history storage, statistics and analysis on the characteristics of the photovoltaic components to prevent the further enlargement of faults and improve the power supply reliability and power supply quality of photovoltaic power stations; and the device improves the accuracy and anti-jamming capability of the photovoltaic power stations, and realizes the ultralow power consumption and stable work of the photovoltaic power stations.