CN204333976U - A kind of wind-electricity integration stability of a system and quality of power supply improving device - Google Patents

A kind of wind-electricity integration stability of a system and quality of power supply improving device Download PDF

Info

Publication number
CN204333976U
CN204333976U CN201520003845.6U CN201520003845U CN204333976U CN 204333976 U CN204333976 U CN 204333976U CN 201520003845 U CN201520003845 U CN 201520003845U CN 204333976 U CN204333976 U CN 204333976U
Authority
CN
China
Prior art keywords
wind
statcom
quality
electricity integration
power supply
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
CN201520003845.6U
Other languages
Chinese (zh)
Inventor
匡洪海
张曙云
曾丽琼
李圣清
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.)
Hunan University of Technology
Original Assignee
Hunan University of Technology
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 Hunan University of Technology filed Critical Hunan University of Technology
Priority to CN201520003845.6U priority Critical patent/CN204333976U/en
Application granted granted Critical
Publication of CN204333976U publication Critical patent/CN204333976U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • Y02E10/76—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
    • Y02E40/10—Flexible AC transmission systems [FACTS]
    • 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

  • Control Of Eletrric Generators (AREA)

Abstract

The improving device of a kind of wind-electricity integration stability of a system and the quality of power supply, comprise STATCOM STATCOM (1), power system stabilizer (2), STATCOM (1) is connected to the junction of wind energy turbine set (3) and electrical network (4), and PSS (2) is arranged on automatic excitation regulator AER (5) place of the synchronous generator connecting electrical network (4).Wherein, STATCOM (1) is made up of coupling transformer and voltage source inverter VSC, and PSS (2) is made up of filter circuit, lead-lag network, amplifying circuit, block isolating circuit and amplitude limiter circuit.This device adopts STATCOM (1) and PSS (2) controller to combine, and can have voltage after the fault at efficient recovery wind-electricity integration place, improves the fault ride-through capacity of wind energy turbine set, the stability of raising wind-electricity integration system and the quality of power supply.Therefore this device can provide a favorable security for the utilization of wind energy, has a good application prospect.

Description

A kind of wind-electricity integration stability of a system and quality of power supply improving device
Technical field
The utility model relates to the improving device of a kind of wind-electricity integration stability of a system and the quality of power supply, voltage after the fault at efficient recovery wind-electricity integration place can be had, improve the fault ride-through capacity of wind energy turbine set, improve the transient stability of wind-electricity integration system and the quality of power supply of wind turbine generator.
Background technology
At present, the wind-electricity integration system be made up of wind power generation and large power system, has and makes full use of regenerative resource, plurality of advantages such as the raising feature of environmental protection and economy etc., in sustainable development and reduction environmental pollution, play more and more important effect.When a large amount of wind power integration electrical network can produce material impact to the stable operation of electric power system, how ensureing that the transient stability of grid-connected system and the quality of power supply do not reduce is current institute problems faced.In tradition wind energy turbine set, every typhoon power generator is all furnished with shunt capacitor, required reactive power is provided for blower fan normally runs, but capacitor adjustment exists, and speed is slow, compensation precision is low, and the shortcoming such as operational failure under undervoltage condition, and the input of STATCOM can be the reactive power support that wind turbine generator provides required, thus wind energy turbine set terminal voltage is remained unchanged.But when FACTS, when there is no excitation controller in electric power system, even if increase STATCOM system also differs keep stable surely.Be by STATCOM and PSS fit applications in wind-electricity integration system for addressing this problem economically viable way, STATCOM is connected in parallel on wind power integration point, and PSS is then arranged in the AER of synchronous generator.
Summary of the invention
The purpose of this utility model is to design a kind of wind-electricity integration stability of a system and quality of power supply improving device.The STATCOM of this device is connected to wind energy turbine set, can be the reactive power that wind energy turbine set provides necessary, makes asynchronous generator can not step-out, and the PSS of this device is connected to the AER place of the synchronous generator of electrical network, can improve system damping.The reactive power demand of bucking-out system is carried out like this by STATCOM, transient stability is improved by AER, improve the damping of system to improve the oscillatory stability of system by configuring PSS in AER, thus the stability of wind-electricity integration system and the quality of power supply are improved.
For achieving the above object, the technical solution of the utility model is: the improving device of a kind of wind-electricity integration stability of a system and the quality of power supply comprises STATCOM(1), PSS(2), STATCOM(1) wind energy turbine set (3) and electrical network (4) junction is connected to, PSS(2) be arranged on the AER(5 of synchronous generator connecting electrical network (4)) place.
Described STATCOM(1) be made up of coupling transformer and voltage source inverter VSC..DC voltage conversion on energy storage device is one group of three-phase alternating current output voltage by VSC.Output voltage is connected with AC system by coupling transformer impedance again, by suitably regulating amplitude and the phase place of bridge rectifier AC output voltage, or directly control its ac-side current, this circuit just can be made to absorb or send the reactive current met the demands, thus realize the object of dynamic passive compensation.
Described STATCOM(1) be parallel to wind energy turbine set (3) and electrical network (4) junction, be equivalent to a controlled reactive current source, its reactive current can be followed the change of reactive load electric current rapidly and change, reactive power needed for auto-compensation network system, realizes dynamic passive compensation to power system reactive power.
Described STATCOM(1) adopt Decoupling Control under dq0 axial coordinate, whole control program contains the control loop of two cascades.
Described PSS(2) adopt motor speed deviation as input, its output signal is voltage signal.
Described PSS(2) be added in the AER input of synchronous generator, a positive damping moment components can be provided to make up negative damping that AER produces, with waving of damping generator amature angle.
Described STATCOM(1) and PSS(2) both cooperatively interact synergy.Pass through STATCOM(1) carry out the reactive power demand of bucking-out system, the AER of synchronous generator can improve transient stability, before AER, configure PSS can improve the damping of system to improve the oscillatory stability of system, thus the stability of wind-electricity integration system and the quality of power supply are improved.
The beneficial effects of the utility model are: this device combines owing to adopting STATCOM and PSS controller, voltage after the fault at efficient recovery wind-electricity integration place can be had, improve the fault ride-through capacity of wind energy turbine set, improve the quality of power supply of the transient stability wind turbine generator of wind-electricity integration system.This device can not only improve stability and the quality of power supply of wind-electricity integration system, and provides favourable guarantee for the utilization of China's regenerative resource wind energy, has good actual application prospect.
Accompanying drawing explanation
Fig. 1 the utility model device fundamental diagram.
Fig. 2 STATCOM structure chart.
Fig. 3 PSS structured flowchart.
Embodiment
Below in conjunction with drawings and Examples, patent of the present invention is further illustrated.
In Fig. 1, when wind energy turbine set (3) access electrical network (4), certainly will have a negative impact to the stable operation of electrical network (4), thus the transient stability of wind-electricity integration system and the quality of power supply will be reduced.By STATCOM(1) be connected to the junction of wind energy turbine set (3) and electrical network (4); PSS(2) AER(5 of the synchronous generator connecting electrical network (4) is arranged on) place; STATCOM(1) and PSS(2) both cooperatively interact synergy.Pass through STATCOM(1) carry out the reactive power demand of bucking-out system, the AER(5 of synchronous generator) can transient stability be improved, at AER(5) front configuration PSS(2) damping of system can be improved to improve the oscillatory stability of system, thus the stability of wind-electricity integration system and the quality of power supply are improved.
In Fig. 2, STATCOM(1) be made up of coupling transformer and voltage source inverter VSC..DC voltage conversion on energy storage device is one group of three-phase alternating current output voltage by VSC.Output voltage is connected with AC system by coupling transformer impedance again, by suitably regulating amplitude and the phase place of bridge rectifier AC output voltage, or directly control its ac-side current, this circuit just can be made to absorb or send the reactive current met the demands, thus realize the object of dynamic passive compensation.
In Fig. 3, PSS(2) by measuring filter circuit, providing the block isolating circuit of the lead-lag network of phase compensation, the amplifying circuit carrying out Gain tuning, isolation signals stationary value and amplitude limiter circuit to form, it adopts motor speed deviation as input, and its output signal is voltage signal.PSS(2) AER(5 of synchronous generator is added in) input, a positive damping moment components can be provided to make up negative damping that AER produces, with waving of damping generator amature angle.
Device described by the utility model patent combines owing to adopting STATCOM and PSS controller, voltage after the fault at efficient recovery wind-electricity integration place can be had, improve the fault ride-through capacity of wind energy turbine set, improve the transient stability of wind-electricity integration system and the quality of power supply of wind turbine generator.Utilization for China's regenerative resource wind energy is provided favourable guarantee by the application of this integration unit in wind-electricity integration system, has good actual application prospect.

Claims (3)

1. a wind-electricity integration stability of a system and quality of power supply improving device, it is characterized in that described device comprises STATCOM STATCOM (1), power system stabilizer (2), STATCOM STATCOM (1) is connected to the junction of wind energy turbine set (3) and electrical network (4), and power system stabilizer (2) is arranged on automatic excitation regulator AER (5) place of the synchronous generator connecting electrical network (4).
2. the wind-electricity integration stability of a system according to claim 1 and quality of power supply improving device, is characterized in that described STATCOM STATCOM (1) is made up of coupling transformer and voltage source inverter VSC..
3. the wind-electricity integration stability of a system according to claim 1 and quality of power supply improving device, it is characterized in that described power system stabilizer (2) adopts electrical rotate-speed increment as input, its output signal is voltage signal and sends into automatic excitation regulator AER (5).
CN201520003845.6U 2015-01-06 2015-01-06 A kind of wind-electricity integration stability of a system and quality of power supply improving device Expired - Fee Related CN204333976U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520003845.6U CN204333976U (en) 2015-01-06 2015-01-06 A kind of wind-electricity integration stability of a system and quality of power supply improving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520003845.6U CN204333976U (en) 2015-01-06 2015-01-06 A kind of wind-electricity integration stability of a system and quality of power supply improving device

Publications (1)

Publication Number Publication Date
CN204333976U true CN204333976U (en) 2015-05-13

Family

ID=53170291

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520003845.6U Expired - Fee Related CN204333976U (en) 2015-01-06 2015-01-06 A kind of wind-electricity integration stability of a system and quality of power supply improving device

Country Status (1)

Country Link
CN (1) CN204333976U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106558883A (en) * 2015-09-24 2017-04-05 中国电力科学研究院 A kind of electric network fault control system for reactive power compensator
CN107612032A (en) * 2017-10-19 2018-01-19 国网湖南省电力公司 A kind of wind-electricity integration power quality supervisory information system and method based on two-state control
CN108414831A (en) * 2018-02-09 2018-08-17 华北电力大学 Study the experimental provision and method of high permeability New-energy power system
CN111064207A (en) * 2020-01-10 2020-04-24 电子科技大学 Multi-band damping control method based on energy storage device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106558883A (en) * 2015-09-24 2017-04-05 中国电力科学研究院 A kind of electric network fault control system for reactive power compensator
CN106558883B (en) * 2015-09-24 2019-06-28 中国电力科学研究院 A kind of electric network fault control system for reactive power compensator
CN107612032A (en) * 2017-10-19 2018-01-19 国网湖南省电力公司 A kind of wind-electricity integration power quality supervisory information system and method based on two-state control
CN108414831A (en) * 2018-02-09 2018-08-17 华北电力大学 Study the experimental provision and method of high permeability New-energy power system
CN111064207A (en) * 2020-01-10 2020-04-24 电子科技大学 Multi-band damping control method based on energy storage device

Similar Documents

Publication Publication Date Title
Jin et al. Combined low voltage ride through and power smoothing control for DFIG/PMSG hybrid wind energy conversion system employing a SMES-based AC-DC unified power quality conditioner
Chen et al. A novel DVR-ESS-embedded wind-energy conversion system
CN101860043B (en) Low voltage traversing control device and method for serial connection wind power generator set
Abrantes Overview of power quality aspects in wind generation
CN204333976U (en) A kind of wind-electricity integration stability of a system and quality of power supply improving device
CN105098833A (en) Asynchronous constant speed wind turbine system for micro grid and working method thereof
Elsady et al. STATCOM for improved dynamic performance of wind farms in power grid
CN110518600A (en) A kind of grid-connected active support and control structure of PMSG of the modified multi-machine parallel connection based on VSG
CN201805236U (en) Series type LVRT (low voltage ride through) control device of wind generating set
CN205141702U (en) Double -fed aerogenerator low voltage ride through system
Song et al. Stability and control of a grid integrated DFIM based variable speed pumped storage system
Latha et al. STATCOM for enhancement of voltage stability of a DFIG driven wind turbine
Wang et al. A novel low voltage ride through control strategy based on virtual synchronous generator
Kumar Bisoyi et al. A review of the state of the art of generators and power electronics converter topologies for wind energy conversion system
Dong et al. Low voltage ride through capability enhancement of PMSG-based wind turbine
CN103441528A (en) Converter topological structure for doubly-fed wind generating set
Meenakshi et al. Doubly fed induction generator for wind energy conversion system-A survey
CN207518271U (en) A kind of improvement device of wind-electricity integration system voltage stability
Roy et al. Nonlinear adaptive backstepping controller design for permanent magnet synchronous generator (PMSG)-based wind farms to enhance fault ride through capabilities
Zhu et al. Improved low voltage ride-through of wind farm using STATCOM and pitch control
CN103470451A (en) Wind power and diesel mixed power generating system and method
Li et al. Comparison of HVAC and HVDC based grid integration on wind farm
Ma et al. Simulation research on fault ride through for permanent magnet synchronous generator wind power system
Bahramipanah et al. A study on power system's transient stability in determination of the appropriate generator type for wind turbines: Comparison between fixed-speed induction generator equipped with energy storage system and doubly-fed induction generator
Zhang et al. Small signal analysis of photovoltaic-energy storage integrated virtual synchronous generator

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150513

Termination date: 20160106