CN206775129U - A kind of multifunctional electric energy quality optimization power distribution equipment - Google Patents

A kind of multifunctional electric energy quality optimization power distribution equipment Download PDF

Info

Publication number
CN206775129U
CN206775129U CN201720624858.4U CN201720624858U CN206775129U CN 206775129 U CN206775129 U CN 206775129U CN 201720624858 U CN201720624858 U CN 201720624858U CN 206775129 U CN206775129 U CN 206775129U
Authority
CN
China
Prior art keywords
electric energy
energy quality
casing
module
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720624858.4U
Other languages
Chinese (zh)
Inventor
李宏
杨津听
王世平
刘海田
周崇兴
张茹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunming Electrical Apparatus Research Institute
Original Assignee
Kunming Electrical Apparatus Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunming Electrical Apparatus Research Institute filed Critical Kunming Electrical Apparatus Research Institute
Priority to CN201720624858.4U priority Critical patent/CN206775129U/en
Application granted granted Critical
Publication of CN206775129U publication Critical patent/CN206775129U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40Arrangements for reducing harmonics

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)
  • Inverter Devices (AREA)

Abstract

A kind of multifunctional electric energy quality optimization power distribution equipment,Include casing,With the multifunctional electric energy quality optimization module located at box house,Humidity control system,Fire extinguishing system and communication unit,Multifunctional electric energy quality optimization module is made up of data analysis module and electric energy quality optimizing module,Data analysis module includes phototube coupling unit,AC sampling unit,A/D converting units and central processing unit,Electric energy quality optimizing module includes harmonic filter circuit,Reactive power compensation circuit and overvoltage/compensator circuit of voltage shortage,Humidity control system includes the Water-cooling circulating temperature regulation ducts located at box house and the radiator fan located at wall box,Water-cooling circulating temperature regulation ducts are provided with water inlet pipe and outlet pipe in the side wall of casing,Radiator fan installs the position that IGCT is corresponded in casing,Fire extinguishing system includes the extinguishing chemical memory being arranged on chamber door and the extinguishing chemical ejection passage for being arranged at casing left side wall,Extinguishing chemical ejection passage is provided with many places ejiction opening.

Description

A kind of multifunctional electric energy quality optimization power distribution equipment
Technical field
It the utility model is related to a kind of multifunctional electric energy quality optimization power distribution equipment.
Background technology
The quality of power supply is the quality of electric energy in power system, and preferable electric energy should be the sine wave of ideal symmetrical.Some Factor can make waveform deviate symmetrical sine, thus just generate power quality problem.Because AC network active constituent is power frequency Single-frequency, therefore any composition different from work frequency can be referred to as harmonic wave.Due to sinusoidal voltage stress on it is non-thread Property load, fundamental current is distorted generation harmonic wave, and the harm of harmonic wave is extremely serious.Harmonic wave makes the production, transmission and profit of electric energy Efficiency reduces, and makes device of overheating of electrical, produces vibration and noise, and makes insulation ag(e)ing, and service life shortens, or even occurs Failure is burnt.Harmonic wave can cause power system local parallel resonant or series resonance, amplify harmonic content, cause capacitor Deng equipment burnout.Harmonic wave can also cause relay protection and automatics to malfunction, and electric energy metrical is caused confusion.For power train System is outside, and harmonic wave can produce severe jamming to communication equipment and electronic equipment.Hyper-Voltage of Power Systems is to endanger power system peace One of principal element of row for the national games, overvoltage often result in electrical equipment damage and large area blackout, just once occurring In the case of often, electrical equipment not only will obtain active power from power supply, while also need to obtain reactive power from power supply.It is if electric Supply falls short of demand for reactive power in net, and electrical equipment just establishes normal electromagnetic field without enough reactive powers, then this A little electrical equipments cannot maintain to work in the nominal case, and the terminal voltage of electrical equipment will decline, and be set so as to influence electricity consumption Standby normal operation.
The structure of current existing electric energy quality optimizing device simply causes function single, and device dissipates in use It is hot uneven, cause IGCT to overheat and cause circuit to damage;Easily trigger wire combustion in short circuit, processing is held not in time Serious fire incident is easily triggered to cause great economic loss.
Utility model content
The utility model devises a kind of multifunctional electric energy quality optimization power distribution equipment, the dress to solve the above problems Put with harmonic carcellation, suppress the functions such as overvoltage/under-voltage and reactive power compensation, and dual cooling side is provided with inside device Formula, radiating effect is more preferable, while device is additionally provided with fire extinguishing system, wire combustion accident caused by can eliminating short circuit in time, prevents For major structure into great economic loss, device is additionally provided with fool proof facility, and safe running performance is more preferable.
In order to realize above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is real by the following technical programs Existing:
A kind of multifunctional electric energy quality optimization power distribution equipment, the multifunctional electric energy matter comprising casing and located at box house Optimization module, humidity control system, fire extinguishing system and communication unit are measured, multifunctional electric energy quality optimization module is by data analysis mould Block and electric energy quality optimizing module composition, data analysis module include phototube coupling unit, AC sampling unit, A/D conversion lists Member and central processing unit, electric energy quality optimizing module include harmonic filter circuit, reactive power compensation circuit and overvoltage/under-voltage compensation electricity Road, data analysis module can gather the quality of power supply information of three phase mains and be compared by central processing unit with preset value, Pwm pulse signal is exported to drive circuit by central processing unit, drive circuit exports positive voltage or negative voltage signal to electric energy Quality optimization module, electric energy quality optimizing module on and off harmonic filter circuit, reactive power compensation circuit and overvoltage/under-voltage benefit Circuit is repaid accordingly to compensate the quality of power supply of transmission line of electricity;
The humidity control system is included located at the Water-cooling circulating temperature regulation ducts of box house and located at wall box Radiator fan, Water-cooling circulating temperature regulation ducts are provided with water inlet pipe and outlet pipe in the side wall of casing, and water inlet pipe is pumped into cold Water, outlet pipe extract hot water out, and the radiator fan installs the position that IGCT is corresponded in casing;
The fire extinguishing system includes the extinguishing chemical memory being arranged on chamber door and the extinguishing chemical for being arranged at casing left side wall Ejection passage, extinguishing chemical ejection passage are provided with many places ejiction opening;
The box house upper strata is provided with signal collector, signal collector respectively with AC sampling unit, flame detecting Device is connected with temperature inductor, and the output end of signal collector is connected with central processing unit, and drive is provided with the right side of central processing unit Dynamic circuit, the middle lower floor of casing are provided with multigroup inverter, and inverter can eliminate harmonic component, suppression voltage mistake in delivery circuit It is high or too low, it is provided with and benefit of allying the communists/point benefit capacitor in the bottom of casing, and benefit of allying the communists/point benefit capacitor can compensate for circuit Reactive power.
Further, the chamber door outer surface of described casing be provided with three phase mains information display screen, by-pass switch button and Working station indicator, the protective cover that can be started upwards is provided with the outside of by-pass switch button, and protective cover can prevent bypass from opening The maloperation of pass.
Further, described communication unit includes RS485 communication modules, wireless transport module and RF communication modules, choosing Select one or more communication modules and can be connected with Surveillance center and realize real time on-line monitoring.
The beneficial effects of the utility model are:The device has harmonic carcellation, suppresses overvoltage/under-voltage and reactive power compensation Etc. function, and dual cooling method is provided with inside device, radiating effect is more preferable, while device is additionally provided with fire extinguishing system, can Wire combustion accident caused by eliminating short circuit in time, prevents from causing great economic loss, device is additionally provided with fool proof set Apply, safe running performance is more preferable, and the hot water heated using box house heat to Water-cooling circulating temperature regulation ducts can also answer More location is used, has saved the consumption of the energy.
Certainly, implement any product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, make required for being described below to embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the utility model, For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Other accompanying drawings.
Fig. 1 is a kind of internal structure schematic diagram of multifunctional electric energy quality optimization power distribution equipment;
Fig. 2 is the internal structure schematic diagram of the casing;
Fig. 3 is the external structure schematic diagram of the casing.
In accompanying drawing, the list of parts representated by each label is as follows:
1- casings, 101- protective covers, 2- phototube coupling units, 3- AC sampling units, 31- signal collectors, 4-A/D turn Change unit, 5- central processing units, 6- drive circuits, 7- electric energy quality optimizing modules, 71- harmonic filter circuits, 72- reactive-load compensations Circuit, 721- and benefit of allying the communists/point benefit capacitor, 722- branch switches, 73- overvoltages/compensator circuit of voltage shortage, 731- inverters, 8- Communication unit, 81-RS485 communication modules, 82- wireless transport modules, 83-RF communication modules, 9- display units, 91- three-phase electricities Source information display screen, 93- working station indicators, 10- flame detectors, 11- temperature inductors, 12- humidity control systems, 121- Water-cooling circulating temperature regulation ducts, 122- water inlet pipes, 123- outlet pipes, 124- radiator fans, 13- fire extinguishing systems, 131- Extinguishing chemical memory, 132- extinguishing chemical ejection passages.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The all other embodiment obtained, belong to the scope of the utility model protection.
Refering to shown in Fig. 1-3, a kind of multifunctional electric energy quality optimization power distribution equipment, comprising casing (1) and in casing Multifunctional electric energy quality optimization module, humidity control system (12), fire extinguishing system (13) and the communication unit (8) in portion, it is multi-functional Electric energy quality optimizing module is made up of data analysis module and electric energy quality optimizing module (7), and data analysis module includes photoelectricity Isolated location (2), AC sampling unit (3), A/D converting units (4) and central processing unit (5), electric energy quality optimizing module (7) It can be adopted including harmonic filter circuit (71), reactive power compensation circuit (72) and overvoltage/compensator circuit of voltage shortage (73), data analysis module Collect the quality of power supply information of three phase mains and be compared by central processing unit (5) with preset value, it is defeated by central processing unit (5) Go out pwm pulse signal to drive circuit (6), drive circuit (6) exports positive voltage or negative voltage signal to electric energy quality optimizing Module (7), electric energy quality optimizing module (7) on and off harmonic filter circuit (71), reactive power compensation circuit (72) and overvoltage/ Compensator circuit of voltage shortage (73) is accordingly compensated the quality of power supply of transmission line of electricity;
The humidity control system (12) include located at the internal Water-cooling circulating temperature regulation ducts (121) of casing (1) and Located at the radiator fan (124) of wall box, Water-cooling circulating temperature regulation ducts (121) are provided with water inlet pipe in the side wall of casing (122) and outlet pipe (123), water inlet pipe (122) are pumped into cold water, and outlet pipe (123) extracts hot water, the radiator fan (124) out Install the position that IGCT is corresponded in casing;
The fire extinguishing system (13) includes the extinguishing chemical memory (131) being arranged on chamber door and is arranged at casing left side wall Extinguishing chemical ejection passage (132), extinguishing chemical ejection passage (132) is provided with many places ejiction opening;
The internal upper strata of the casing (1) is provided with signal collector (31), signal collector (31) respectively with AC sampling list First (3), flame detector (10) and temperature inductor (11) connection, the output end and central processing unit of signal collector (31) (5) connect, drive circuit (6) is installed on the right side of central processing unit (5), the middle lower floor of casing (1) is provided with multigroup inverter (731), inverter (731) can eliminate harmonic component in delivery circuit, suppress overtension or too low, in the bottom of casing It is provided with and benefit of allying the communists/point benefit capacitor (721), and benefit of allying the communists/point benefit capacitor (721) can compensate for the reactive power of circuit.
Therein, the chamber door outer surface of described casing (1) is pressed provided with three phase mains information display screen (91), by-pass switch Button and working station indicator (93), the protective cover (101) that can be started upwards, protective cover are provided with the outside of by-pass switch button (101) maloperation of by-pass switch can be prevented.
Therein, described communication unit (8) leads to including RS485 communication modules (81), wireless transport module (82) and RF Module (83) is interrogated, selects one or more communication modules to be connected with Surveillance center and realizes real time on-line monitoring.
One of the present embodiment has particular application as:Three phase mains bus is connected on multifunctional electric energy quality optimization power distribution equipment Casing left side binding post on, by load supplying circuit be connected on casing east power output binding post on, casing It is built-in with multifunctional electric energy quality optimization module, humidity control system (12), fire extinguishing system (13) and communication unit (8), more work( Energy electric energy quality optimizing module is made up of data analysis module and electric energy quality optimizing module (7), and data analysis module includes light It is electrically isolated unit (2), AC sampling unit (3), A/D converting units (4) and central processing unit (5), electric energy quality optimizing module (7) harmonic filter circuit (71), reactive power compensation circuit (72) and overvoltage/compensator circuit of voltage shortage (73), data analysis module are included The quality of power supply information of three phase mains can be gathered and be compared by central processing unit (5) with preset value, by central processing unit (5) pwm pulse signal is exported to drive circuit (6), and drive circuit (6) exports positive voltage or negative voltage signal to the quality of power supply Optimization module (7), electric energy quality optimizing module (7) on and off harmonic filter circuit (71), reactive power compensation circuit (72) and Overvoltage/compensator circuit of voltage shortage (73) is accordingly compensated the quality of power supply of transmission line of electricity;Humidity control system (12) includes setting In the internal Water-cooling circulating temperature regulation ducts (121) of casing (1) and the radiator fan (124) located at wall box, water cooling is followed Ring temperature regulation ducts (121) are provided with water inlet pipe (122) and outlet pipe (123) in the side wall of casing, and water inlet pipe (122) is pumped into Cold water, outlet pipe (123) extract hot water out, and when temperature is too high, temperature inductor (11) inputs the temperature information of detection to center In processor (5), humidity control system (12) drive circuit opens switch and the radiating of Water-cooling circulating temperature regulation ducts (121) Fan (124) cools to inside, and dual cooling method more effectively ensures the internal temperature of casing (1), and outlet pipe (123) The hot water of output can be additionally used in other application, so as to reach the purpose that used heat reuses, save the energy;When casing (1) is internal Occur short circuit caused by naked light when, flame detector (10) the flame information of detection can be inputted to central processing unit (5) so as to Drive the conducting of fire extinguishing system (13) circuit, extinguishing chemical by the extinguishing chemical ejection passage (132) of casing left side wall spray with to Up to the purpose of fire extinguishing, prevent naked light from further expanding initiation fire incident;It is provided with the outside of the by-pass switch button of casing (1) The protective cover (101) that can be started upwards, protective cover (101) can prevent the maloperation of by-pass switch;The device not only has harmonic wave The function of elimination, overvoltage/under-voltage suppression and reactive-load compensation, also with dual cooling, the function of putting out a fire in time, is added multi-functional The high efficiency and security of electric energy quality optimizing power distribution equipment.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means It is contained in reference to specific features, structure, material or the feature that the embodiment or example describe of the present utility model at least one In embodiment or example.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or Example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example In combine in an appropriate manner.
The utility model preferred embodiment disclosed above is only intended to help and illustrates the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, it is only described embodiment also not limit the utility model.Obviously, according to this theory The content of bright book, it can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably Principle and practical application of the present utility model is explained, so that skilled artisan can be best understood by and utilize this Utility model.The utility model is only limited by claims and its four corner and equivalent.

Claims (3)

  1. A kind of 1. multifunctional electric energy quality optimization power distribution equipment, it is characterised in that:Comprising casing (1) and located at box house Multifunctional electric energy quality optimization module, humidity control system (12), fire extinguishing system (13) and communication unit (8), multifunctional electric energy Quality optimization module is made up of data analysis module and electric energy quality optimizing module (7), and data analysis module includes Phototube Coupling Unit (2), AC sampling unit (3), A/D converting units (4) and central processing unit (5), electric energy quality optimizing module (7) include Harmonic filter circuit (71), reactive power compensation circuit (72) and overvoltage/compensator circuit of voltage shortage (73), data analysis module can gather three The quality of power supply information of phase power supply is simultaneously compared by central processing unit (5) with preset value, is exported by central processing unit (5) For pwm pulse signal to drive circuit (6), drive circuit (6) exports positive voltage or negative voltage signal to electric energy quality optimizing mould Block (7), electric energy quality optimizing module (7) on and off harmonic filter circuit (71), reactive power compensation circuit (72) and overvoltage/owe Pressure compensation circuit (73) is accordingly compensated the quality of power supply of transmission line of electricity;
    The humidity control system (12) includes located at the internal Water-cooling circulating temperature regulation ducts (121) of casing (1) and is located at The radiator fan (124) of wall box, Water-cooling circulating temperature regulation ducts (121) are provided with water inlet pipe in the side wall of casing (122) and outlet pipe (123), water inlet pipe (122) are pumped into cold water, and outlet pipe (123) extracts hot water, the radiator fan (124) out Install the position that IGCT is corresponded in casing;
    The fire extinguishing system (13) includes the extinguishing chemical memory (131) being arranged on chamber door and is arranged at going out for casing left side wall Fiery agent ejection passage (132), extinguishing chemical ejection passage (132) are provided with many places ejiction opening;
    The internal upper strata of the casing (1) is provided with signal collector (31), signal collector (31) respectively with AC sampling unit (3), flame detector (10) and temperature inductor (11) connection, output end and the central processing unit (5) of signal collector (31) Connection, central processing unit (5) right side are provided with drive circuit (6), and the middle lower floor of casing (1) is provided with multigroup inverter (731), inverse Harmonic component in delivery circuit can be eliminated, suppress overtension or too low by becoming device (731), and parallel connection is provided with the bottom of casing Common benefit/point benefit capacitor (721), and benefit of allying the communists/point benefit capacitor (721) can compensate for the reactive power of circuit.
  2. A kind of 2. multifunctional electric energy quality optimization power distribution equipment according to claim 1, it is characterised in that:Described casing (1) chamber door outer surface is provided with three phase mains information display screen (91), by-pass switch button and working station indicator (93), The outside of by-pass switch button is provided with the protective cover (101) that can be started upwards, and protective cover (101) can prevent the mistake of by-pass switch from grasping Make.
  3. A kind of 3. multifunctional electric energy quality optimization power distribution equipment according to claim 1, it is characterised in that:Described communication Unit (8) includes RS485 communication modules (81), wireless transport module (82) and RF communication modules (83), and selection is one or more Communication module can be connected with Surveillance center and realize real time on-line monitoring.
CN201720624858.4U 2017-06-01 2017-06-01 A kind of multifunctional electric energy quality optimization power distribution equipment Expired - Fee Related CN206775129U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720624858.4U CN206775129U (en) 2017-06-01 2017-06-01 A kind of multifunctional electric energy quality optimization power distribution equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720624858.4U CN206775129U (en) 2017-06-01 2017-06-01 A kind of multifunctional electric energy quality optimization power distribution equipment

Publications (1)

Publication Number Publication Date
CN206775129U true CN206775129U (en) 2017-12-19

Family

ID=60639228

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720624858.4U Expired - Fee Related CN206775129U (en) 2017-06-01 2017-06-01 A kind of multifunctional electric energy quality optimization power distribution equipment

Country Status (1)

Country Link
CN (1) CN206775129U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111355140A (en) * 2019-07-03 2020-06-30 广东益胜电气有限公司 Intelligent energy-saving full-control type electric energy quality device
CN117650448A (en) * 2023-12-08 2024-03-05 国能蚌埠发电有限公司 Distribution box for reactive power compensation power transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111355140A (en) * 2019-07-03 2020-06-30 广东益胜电气有限公司 Intelligent energy-saving full-control type electric energy quality device
CN117650448A (en) * 2023-12-08 2024-03-05 国能蚌埠发电有限公司 Distribution box for reactive power compensation power transmission

Similar Documents

Publication Publication Date Title
CN104377582B (en) Box-type substation
CN206775129U (en) A kind of multifunctional electric energy quality optimization power distribution equipment
TW201334355A (en) System linking device
CN104836124A (en) Capacitor reactive power compensation cabinet
CN104124916B (en) High aititude photovoltaic plant electric network fault simulated testing system mobile detection apparatus
CN205159875U (en) Low -voltage distribution box
JP2015198508A (en) Photovoltaic power generation device
EP2862427B1 (en) Solar inverter
CN210723900U (en) Centralized ammeter case convenient to management and control just have power compensation function
CN204205381U (en) Box-type substation
CN103390868B (en) A kind of buried substation of safe and intelligent
CN210120335U (en) Main control power distribution unit
CN112350167B (en) Water surface direct current power supply device for ROV
CN205791071U (en) A kind of Intelligent platform zone distribution box
CN210052994U (en) Intelligent ring main unit
CN204465349U (en) A kind of shore electric power system
CN103401436B (en) A kind of commutating circuit module and installation method thereof
CN203734614U (en) Novel intelligent photovoltaic combiner box
CN204088904U (en) A kind of multi-functional photovoltaic exchanges header box
CN206332604U (en) A kind of power panel on DTU
CN205986111U (en) Modular scarce looks protection device of transformer
CN209929740U (en) Electric structure of filtering loop of power grid side frequency converter and integrated machine for wind generating set
CN209913246U (en) Arc protector and grid-connected unit
CN110350586B (en) Integrated machine for wind turbine generator
CN212462547U (en) Rural electric network voltage promotes compensation arrangement

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171219