CN201035439Y - Reactive voltage automatic control system of wind power generation field - Google Patents
Reactive voltage automatic control system of wind power generation field Download PDFInfo
- Publication number
- CN201035439Y CN201035439Y CNU2007201543532U CN200720154353U CN201035439Y CN 201035439 Y CN201035439 Y CN 201035439Y CN U2007201543532 U CNU2007201543532 U CN U2007201543532U CN 200720154353 U CN200720154353 U CN 200720154353U CN 201035439 Y CN201035439 Y CN 201035439Y
- Authority
- CN
- China
- Prior art keywords
- voltage
- transformer
- isolating switch
- compensation
- current
- 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
Links
Images
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to a reactive voltage automatically controlling system for the pneumatic electricity generating field, and mainly includes a reactive voltage comprehensive adjusting device and a reactive voltage compensating device. The utility model is characterized in that the comprehensive adjusting device mainly consists of a main monitor, an auxiliary monitor, an engineer working station, a printer and a printer server; the compensating device mainly consists of a central compensating device and a plurality of size compensating devices; the central compensating device mainly consists of two voltage mutual sensors A and B, two current mutual sensors A and B, two breakers A and B, a breaker C, a dynamic voltage adjuster, a serially connecting electricity resistor, a capacitance, a parallel connecting electricity resistor and a central compensation controller; and each of the size compensating device consists of a breaker D, a plurality of quick fuses, a plurality of dynamic soft cutting modules, a plurality of self-recover type capacitance sets, a voltage mutual sensor C, a current mutual sensor D and a site compensation controller. The utility model is applicable for the monitoring, the control and the adjustment of the reactive voltage in the pneumatic electricity generating field, and has the advantages of flexible control, highly accurate adjustment, quick response, normal working of the electricity generating field guaranty, system voltage stabilization, safeness and energy saving.
Description
Technical field
The utility model relates to a kind of wind power plant Powerless voltage automatic control system, is applicable to monitoring, control and the adjusting of wind-power electricity generation field output voltage and reactive power, with the normal operation of guarantee wind energy turbine set and the safety of electrical network.
Background technology
With natural wind is motive wind power generating set, usually becomes unsettled intermittent power supply because of the randomness of natural wind and uncontrollability.Especially behind the large-scale wind electricity field access electrical network that the wind-powered electricity generation unit of One's name is legion is formed, must the safe and stable operation of electric system be affected.Insert the difference of the electric current and voltage power of electrical network according to the wind-powered electricity generation place, effect also is not quite similar.The wind energy turbine set great majority are in the end of electrical network, and wind farm grid-connected operation becomes one of problem that needs special concern to the influence of electric network reactive-load voltage.Because it is lower that the voltage levvl of electrical network is inserted in the wind-powered electricity generation place, voltage keep ability a little less than, the wind-powered electricity generation unit happens occasionally because of the under-voltage protection function of electrical network situation out of service; In some cases, even increase and decrease occurs, the phenomenon that the area power grid quality of voltage can't guarantee along with the wind energy turbine set output power.The influence of the voltage power-less of the electrical network that wind energy turbine set inserts it has become one of major obstacle of restriction wind energy turbine set installed capacity and wind power engineering development.Therefore, a kind of system that can carry out in good time monitoring, control and adjusting to the voltage power-less of each wind-powered electricity generation unit of wind energy turbine set and whole electric field need to be proposed.
The utility model content
The purpose of this utility model is at the problems referred to above, proposes a kind of wind power plant Powerless voltage automatic control system.This system can in time monitor the various data of wind energy turbine set,, ensures wind energy turbine set and inserts the normal operation of electrical network and improve the quality of line voltage to the genset of electric field with voltage of electric field is idle regulates and control in good time according to these data, and reduce via net loss.
The purpose of this utility model is achieved through the following technical solutions: the wind power plant Powerless voltage automatic control system, mainly comprise: voltage power-less integrated dispatch device, voltage and reactive power compensation device, aerogenerator and communication network is characterized in that: described voltage power-less integrated dispatch device mainly is made up of transmission monitor, secondary watch-dog, engineer work station, printer and printing server; Described voltage and reactive power compensation device mainly is made of centralized compensation device and several in-situ compensation devices; Described centralized compensation device is mainly by voltage transformer (VT) A, current transformer A, voltage transformer (VT) B, current transformer B, isolating switch A, isolating switch B, isolating switch C, the dynamic electric voltage regulator, current-limiting reactor, capacitor, shunt reactor and centralized compensation controller are formed, be connected the current signal of voltage signal summation current transformer A of described voltage transformer (VT) A of main-transformer 220KV side and the voltage and current signal that is connected the described voltage transformer (VT) B summation current transformer B of main-transformer 35KV side and insert described centralized compensation controller, the control signal of this controller inserts isolating switch B, the control assembly of the control end of isolating switch C and dynamic electric voltage regulator, one end of the dynamic electric voltage regulator of described centralized compensation device is connected to the 35KV side of main-transformer through isolating switch A, its other end connects process isolating switch C and is connected to described shunt reactor, be connected to described current-limiting reactor through isolating switch B, current-limiting reactor connects described capacitor; Described several in-situ compensation devices, wherein each comprises isolating switch D, several fastp-acting fuses, several dynamic flexible switching modules, several self healing capacitor groups, voltage transformer (VT) C, current transformer C and local compensation controller, the current signal of voltage signal summation current transformer C of voltage transformer (VT) C that is connected the 690V side of step-up transformer inserts described local compensation controller, the control signal of this controller inserts the control end of described isolating switch D and the control end of dynamic flexible switching module, the end of described isolating switch D connects the 690V side of step-up transformer, one end of described several fastp-acting fuses is connected in parallel on the other end of isolating switch D, the other end of several fastp-acting fuses connects described several self healing capacitor groups, the same aerogenerator of each in-situ compensation device is connected in parallel on the 690V side of a step-up transformer together, and the 35KV side of this step-up transformer is connected the 35KV side of main-transformer; Centralized compensation controller in described voltage power-less integrated dispatch device and the voltage and reactive power compensation device and several local compensation controllers carry out exchanges data and control by communication protocol.
The voltage and current signal that the local compensation controller analyzing and processing of described each in-situ compensation device is transmitted by voltage transformer (VT) C summation current transformer C, instruction according to described integrated dispatch device, switching by flexible switching module controls self healing capacitor group, regulate the voltage of primary side of step-up transformer and idle, to ensure the normal operation of electric field.
The voltage and current signal that the centralized compensation controller analyzing and processing of described centralized compensation device is transmitted by voltage transformer (VT) A, B summation current transformer A, B, instruction according to described integrated dispatch device, principle according to Q=2 π fCU2, by regulating the output voltage of dynamic electric voltage regulator 3.4, promptly regulate the terminal voltage of reactor and capacitor and regulate idle output, thus the normal operation of guarantee electric field.
Centralized compensation control device in the utility model changes capacitor and reactor terminal voltage by the dynamic electric voltage regulator, changes idle output capacity, regulating system power factor, purpose that the improvement system is idle thereby reach.This device does not have superpotential in adjusting, do not have in the adjustment process to discharge and recharge no-flashy-flow, therefore it can realize timely adjustment, and guarantees that reactor and capacitor operate in below the rated voltage, prolong the serviceable life of compensation system, guarantee the voltage power-less qualification rate, effectively reduce line loss.
The reactive-load dynamic compensation control device is to adopt flexible switching control module control thyristor switchable capacitor group on the spot, realizes that dynamic compensation is idle, the purpose of burning voltage.This device has adopted the flexible switching technology of advanced thyristor, have that the switching waveform is level and smooth, no-flashy-flow, no arc reignition, non-transient impact, need not the advantage of discharging and can throw again, dynamic response time is fast, continuously frequent switching capacitor group and do not influence switch and life of capacitors; Can carry out reactive-load compensation according to the load condition Real-time and Dynamic opening-closing capacitor bank of distribution system, burning voltage improves user's power factor.
The utility model adopts two control hierarchys: the upper strata is that system's key-course is the voltage power-less synthesis scheduling system, the voltage of comprehensive coordination control wind energy turbine set and the flow direction of reactive power.Lower floor is that the device control layer is the control device of reactive-load dynamic compensation on the spot and the idle control device of transformer station's lumped voltage of blower fan side.Be convenient to the accurate adjusting of voltage power-less and control flexibly.
The utility model response speed is fast, control is effective, reliable, and the harmful effect that is brought behind the electrical network is inserted in the large-scale wind electricity field that can effectively solve wind-powered electricity generation unit composition.And can reduce loss, saves energy is kept wind energy turbine set voltage, prevents blower fan because of low-voltage variation off-the-line from network, improves the operational percentage of blower fan; Prevent line voltage unstability and even collapse that wind energy turbine set causes.
Description of drawings
Fig. 1 is the overall schematic of detailed description voltage and reactive power compensation device of the present utility model;
Fig. 2 is the overall schematic of detailed description voltage power-less integrated dispatch device of the present utility model;
Fig. 3 is the utility model control and idle adjusting course of work synoptic diagram.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described: embodiment: referring to accompanying drawing, the wind power plant Powerless voltage automatic control system, mainly comprise: voltage power-less integrated dispatch device, voltage and reactive power compensation device, aerogenerator and communication network, described voltage power-less integrated dispatch device 1 mainly is made up of transmission monitor 1.1, secondary watch-dog 1.2, engineer work station 1.3, printing server 1.4 and printer 1.5; Described voltage and reactive power compensation device mainly is made of centralized compensation device 3 and 3 in-situ compensation devices 2.1,2.2,2.3; Described centralized compensation device is mainly by voltage transformer (VT) A4, current transformer A6, voltage transformer (VT) B3.1, current transformer B3.2, isolating switch A3.3, isolating switch B3.5, isolating switch C3.51, dynamic electric voltage regulator 3.4, current-limiting reactor 3.6, capacitor 3.7, shunt reactor 3.8 and centralized compensation controller 3.9 are formed, be connected the current signal of voltage signal summation current transformer A6 of described voltage transformer (VT) A4 of 220KV side of main-transformer 5 and the voltage and current signal that is connected the described voltage transformer (VT) B3.1 summation current transformer B3.2 of main-transformer 35KV side and insert described centralized compensation controller 3.9, the control signal of this controller inserts isolating switch B3.5, the control assembly of the control end of isolating switch C3.51 and dynamic electric voltage regulator 3.4, one end of the dynamic electric voltage regulator 3.4 of described centralized compensation device is connected to the 35KV side of main-transformer through isolating switch A3.3, its other end connects process isolating switch C3.51 and is connected to described shunt reactor, be connected to described current-limiting reactor through isolating switch B3.5, current-limiting reactor 3.6 connects described capacitor 3.7; Described 3 in-situ compensation devices 2.1,2.2,2.3, wherein each comprises isolating switch D2.15,2 fastp-acting fuses 2.18,2 dynamic flexible switching modules 2.16,2 self healing capacitor groups 2.17, a voltage transformer (VT) C2.13, a current transformer C2.14 and a local compensation controller 2.19, the current signal of voltage signal summation current transformer C2.14 of voltage transformer (VT) C2.13 that is connected the 690V side of step-up transformer 2.11 inserts described local compensation controller, the control signal of this controller inserts the control end of described isolating switch D2.15 and the control end of dynamic flexible switching module 2.16, the end of described isolating switch D2.15 connects the 690V side of step-up transformer, one end of described 2 fastp-acting fuses 2.18 is connected in parallel on the other end of isolating switch D2.15, the other end of 2 fastp-acting fuses 2.18 connects described 2 self healing capacitor groups 2.17, the same aerogenerator 2.12 of each in-situ compensation device is connected in parallel on the 690V side of a step-up transformer together, and the 35KV side of this step-up transformer is connected the 35KV side of main-transformer; Centralized compensation controller 3.9 and 3 local compensation controllers 2.19 in described voltage power-less integrated dispatch device 1 and the voltage and reactive power compensation device carry out exchanges data and control by communication protocol.
The voltage and current signal that the local compensation controller analyzing and processing of described each in-situ compensation device is transmitted by voltage transformer (VT) C summation current transformer C, instruction according to described integrated dispatch device, switching by flexible switching module controls self healing capacitor group, regulate the voltage of primary side of step-up transformer and idle, to ensure the normal operation of electric field.
The voltage and current signal that the centralized compensation controller analyzing and processing of described centralized compensation device is transmitted by voltage transformer (VT) A, B summation current transformer A, B, instruction according to described integrated dispatch device, principle according to Q=2 π fCU2, by regulating the output voltage of dynamic electric voltage regulator 3.4, promptly regulate the terminal voltage of reactor and capacitor and regulate idle output, thus the normal operation of guarantee electric field.
Claims (1)
1. wind power plant Powerless voltage automatic control system, mainly comprise: voltage power-less integrated dispatch device, voltage and reactive power compensation device, aerogenerator and communication network is characterized in that: described voltage power-less integrated dispatch device (1) mainly is made up of transmission monitor (1.1), secondary watch-dog (1.2), engineer work station (1.3), printing server (1.4) and printer (1.5); Described voltage and reactive power compensation device mainly is made of centralized compensation device (3) and several in-situ compensation devices (2.1,2.2,2.3); Described centralized compensation device is mainly by voltage transformer (VT) A (4), current transformer A (6), voltage transformer (VT) B (3.1), current transformer B (3.2), isolating switch A (3.3), isolating switch B (3.5), isolating switch C (3.51), dynamic electric voltage regulator (3.4), current-limiting reactor (3.6), capacitor (3.7), shunt reactor (3.8) and centralized compensation controller (3.9) are formed, be connected the current signal of voltage signal summation current transformer A (6) of described voltage transformer (VT) A (4) of main-transformer (5) 220KV side and the voltage and current signal that is connected described voltage transformer (VT) B (3.1) the summation current transformer B (3.2) of main-transformer 35KV side and insert described centralized compensation controller (3.9), the control signal of this controller inserts isolating switch B (3.5), the control assembly of the control end of isolating switch C (3.51) and dynamic electric voltage regulator (3.4), one end of the dynamic electric voltage regulator (3.4) of described centralized compensation device is connected to the 35KV side of main-transformer through isolating switch A (3.3), its other end connects process isolating switch C (3.51) and is connected to described shunt reactor, be connected to described current-limiting reactor through isolating switch B (3.5), current-limiting reactor (3.6) connects described capacitor (3.7); Described several in-situ compensation devices (2.1,2.2,2.3), wherein each comprises isolating switch D (2.15), several fastp-acting fuses (2.18), several dynamic flexible switching modules (2.16), several self healing capacitor groups (2.17), voltage transformer (VT) C (2.13), current transformer C (2.14) and local compensation controller (2.19), the current signal of voltage signal summation current transformer C (2.14) of voltage transformer (VT) C (2.13) that is connected the 690V side of step-up transformer (2.11) inserts described local compensation controller, the control signal of this controller inserts the control end of described isolating switch D (2.15) and the control end of dynamic flexible switching module (2.16), the end of described isolating switch D (2.15) connects the 690V side of step-up transformer, one end of described several fastp-acting fuses (2.18) is connected in parallel on the other end of isolating switch D (2.15), the other end of several fastp-acting fuses (2.18) connects described several self healing capacitor groups (2.17), the same aerogenerator of each in-situ compensation device (2.12) is connected in parallel on the 690V side of a step-up transformer together, and the 35KV side of this step-up transformer is connected the 35KV side of main-transformer; Centralized compensation controller (3.9) and several local compensation controllers (2.19) in described voltage power-less integrated dispatch device (1) and the voltage and reactive power compensation device carry out exchanges data and control by communication protocol;
The voltage and current signal that the local compensation controller analyzing and processing of described each in-situ compensation device is transmitted by voltage transformer (VT) C summation current transformer C, instruction according to described integrated dispatch device, switching by flexible switching module controls self healing capacitor group, regulate the voltage of primary side of step-up transformer and idle, to ensure the normal operation of electric field;
The voltage and current signal that the centralized compensation controller analyzing and processing of described centralized compensation device is transmitted by voltage transformer (VT) A, B summation current transformer A, B, instruction according to described integrated dispatch device, principle according to Q=2 π fCU2, by regulating the output voltage of dynamic electric voltage regulator (3.4), promptly regulate the terminal voltage of reactor and capacitor and regulate idle output, thus the normal operation of guarantee electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201543532U CN201035439Y (en) | 2007-05-18 | 2007-05-18 | Reactive voltage automatic control system of wind power generation field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201543532U CN201035439Y (en) | 2007-05-18 | 2007-05-18 | Reactive voltage automatic control system of wind power generation field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201035439Y true CN201035439Y (en) | 2008-03-12 |
Family
ID=39196331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201543532U Expired - Fee Related CN201035439Y (en) | 2007-05-18 | 2007-05-18 | Reactive voltage automatic control system of wind power generation field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201035439Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460339A (en) * | 2009-05-12 | 2012-05-16 | 雷蒙德·约翰·佩托 | A motor controller and related method |
| CN102868178A (en) * | 2012-09-21 | 2013-01-09 | 北京金风科创风电设备有限公司 | Method for improving grid-connected transient stability in wind power plant voltage automatic control system |
| CN102946095A (en) * | 2012-11-27 | 2013-02-27 | 东南大学 | Method and device for suppressing overvoltage of power distribution network caused by distributed power generation |
| CN103238258A (en) * | 2010-12-01 | 2013-08-07 | Abb技术有限公司 | Reactive power compensator, computer programs and computer program products |
| CN111641211A (en) * | 2020-06-12 | 2020-09-08 | 国网重庆市电力公司电力科学研究院 | Voltage sag joint compensation optimization method and device and readable storage medium |
| CN114157011A (en) * | 2021-11-01 | 2022-03-08 | 国能神福(龙岩)发电有限公司 | Safety power supply system |
| US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
| US11747841B2 (en) | 2018-08-20 | 2023-09-05 | Eaton Intelligent Power Limited | Current control apparatus |
-
2007
- 2007-05-18 CN CNU2007201543532U patent/CN201035439Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460339A (en) * | 2009-05-12 | 2012-05-16 | 雷蒙德·约翰·佩托 | A motor controller and related method |
| CN102460339B (en) * | 2009-05-12 | 2014-10-29 | 雷蒙德·约翰·佩托 | A motor controller and related method |
| CN103238258A (en) * | 2010-12-01 | 2013-08-07 | Abb技术有限公司 | Reactive power compensator, computer programs and computer program products |
| CN102868178A (en) * | 2012-09-21 | 2013-01-09 | 北京金风科创风电设备有限公司 | Method for improving grid-connected transient stability in wind power plant voltage automatic control system |
| CN102868178B (en) * | 2012-09-21 | 2015-08-19 | 北京金风科创风电设备有限公司 | Method for improving grid-connected transient stability in wind power plant voltage automatic control system |
| CN102946095A (en) * | 2012-11-27 | 2013-02-27 | 东南大学 | Method and device for suppressing overvoltage of power distribution network caused by distributed power generation |
| US11747841B2 (en) | 2018-08-20 | 2023-09-05 | Eaton Intelligent Power Limited | Current control apparatus |
| CN111641211A (en) * | 2020-06-12 | 2020-09-08 | 国网重庆市电力公司电力科学研究院 | Voltage sag joint compensation optimization method and device and readable storage medium |
| US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
| CN114157011A (en) * | 2021-11-01 | 2022-03-08 | 国能神福(龙岩)发电有限公司 | Safety power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201035439Y (en) | Reactive voltage automatic control system of wind power generation field | |
| US10072634B2 (en) | Method for feeding electrical power into an electrical supply network | |
| CN102948030A (en) | Managing renewable power generation | |
| EP2314868B1 (en) | Power production control system and method | |
| CN104022522B (en) | A kind of coordination control method of multiterminal flexible direct current power transmission system | |
| CN102496948B (en) | Central-control-system-based energy storage type wind power plant | |
| CN103280814B (en) | A kind of wind power plant reactive voltage complex control system and method | |
| CN102368620A (en) | Wind-energy/ solar-energy/ storage/ ocean-current-energy new-energy isolated network stabilization operation integration control system and method thereof | |
| CN104410105A (en) | Intelligent wind power plant control method based on direct-current bus grid structure | |
| CN103078339A (en) | Low-voltage ride through control system and method for capacity-optimal energy-storage type double-fed motor | |
| CN102611118A (en) | Method for comprehensively controlling reactive voltage of wind farm with imported prediction method | |
| CN108054775A (en) | A kind of microgrid control method | |
| CN103855721A (en) | A system for connecting wind farm monitoring system into power grid dispatching system and information exchange method | |
| CN102195294A (en) | Wind farm reactive comprehensive optimization control method | |
| CN102005779A (en) | Converter-based low voltage ride through control system of wind generating set | |
| CN106655265A (en) | Micro-grid energy management system for multiple energy sources | |
| WO2023071266A1 (en) | Coordination control system for agc frequency modulation of energy storage participation unit of power plant | |
| CN102709944A (en) | Control method of low voltage through of wind driven generator set based on DGNR variable pitch system | |
| CN105226726A (en) | A kind of photovoltaic plant centralized monitoring system | |
| CN103151799A (en) | Microgrid power supply system and control method thereof | |
| KR20160107877A (en) | A method for smoothing wind power fluctuation based on battery energy storage system for wind farm | |
| CN202260632U (en) | Intelligent wind power stability control system for power grid | |
| CN113300415A (en) | Auxiliary frequency modulation system based on power plant new energy power generation technology | |
| CN204089197U (en) | The system that wind power plant reactive voltage controls | |
| Opana et al. | STATCOM Application for Grid Dynamic Voltage Regulation: A Kenyan Case Study |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING SNTA ENERGY-SAVING ELECTRIC CO., LTD Free format text: FORMER NAME: BEIJING SNTA ELECTRIC POWER TECHNOLOGY CO., LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100085, A, building 9, Ka Wah building, 901 3rd Street, Beijing, Haidian District Patentee after: Beijing Snta Energy-Saving Electrical Co., Ltd. Address before: 100085, A, building 9, Ka Wah building, 901 3rd Street, Beijing, Haidian District Patentee before: Beijing Snta Electric Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20150518 |
|
| EXPY | Termination of patent right or utility model |