CN104362678B - A kind of wind energy turbine set accesses the analysis method to local electric network influencing counter-measure - Google Patents

A kind of wind energy turbine set accesses the analysis method to local electric network influencing counter-measure Download PDF

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Publication number
CN104362678B
CN104362678B CN201410673884.7A CN201410673884A CN104362678B CN 104362678 B CN104362678 B CN 104362678B CN 201410673884 A CN201410673884 A CN 201410673884A CN 104362678 B CN104362678 B CN 104362678B
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energy turbine
wind energy
wind
electric grid
power
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CN201410673884.7A
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CN104362678A (en
Inventor
迟永宁
张占奎
李琰
王真
汤海雁
魏林君
苏媛媛
孙蔚
王志冰
白宏
张小瑜
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国家电网公司
中国电力科学研究院
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/386Wind energy
    • 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
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/14District level solutions, i.e. local energy networks

Abstract

The present invention provides a kind of wind energy turbine set to access analysis method to local electric network influencing counter-measure, comprises the following steps: analyze output of wind electric field characteristic and and load correlation, assess its impact on partial electric grid digestion capability;Analyze after wind energy turbine set accesses local electric network reactive-load and the impact of trend, determine Reactive Compensation in Wind Farm configuration strategy and control strategy;Calculate the short circuit current that wind energy turbine set provides, check associated bus capacity and the rupturing capacity of switchgear;After assessment wind energy turbine set access, the transient stability of partial electric grid, proposes partial electric grid Transient Stability Control strategy;Analyze whether every power quality index after wind energy turbine set accesses meets standard-required, and at power quality index beyond standard gauge timing, determine feasible Management strategy.The methods analyst of present invention offer is comprehensive, practical, provides scientific basis for the wind farm grid-connected impact of effectively assessment, it is advantageously ensured that the power network safety operation after wind energy turbine set access.

Description

A kind of wind energy turbine set accesses the analysis method to local electric network influencing counter-measure
Technical field
The present invention relates to a kind of analysis method, be specifically related to a kind of wind energy turbine set and access the analysis side to local electric network influencing counter-measure Method.
Background technology
Wind-power electricity generation has exerts oneself the dramatically different feature of stable generation mode with thermal power generation, hydroelectric generation etc.: (1) generates electricity The fluctuation exerted oneself.Due to the inherent limitations in terms of resource, its power output is had the brightest by directly affecting of changing of wind speed Aobvious wave characteristic, it goes out fluctuation can bring considerable influence to the power-balance of system and peak regulation.(2) weak of generation technology Support property.Asynchronous generator and converters are used widely in wind-power electricity generation, this generation technology with tradition firepower, The characteristic that synchronous generator machine technology used by hydraulic power plant shows in steady-state operation and transient process is very different.At present Using the wind-power electricity generation of asynchronous generator and Technics of Power Electronic Conversion technology at electrical network normal operating condition, the method that there is no all realizes providing Enough reactive powers adjust system voltage;When disturbance is broken down in power system, if wind energy turbine set does not possess low voltage crossing Ability, it is also possible to from the electrical network adverse effect brought to system in terms of more multistability out of service.
In view of wind-power electricity generation is totally different in the characteristic of conventional power generation usage, it is necessary to the wind energy turbine set accessing electrical network for planning carries out simulation analysis, To assess its impact that electrical network is brought, and take counter-measure in advance.Wind energy turbine set in early days accesses electric network influencing and analyzes method, Mostly use conventional power unit volume replacement or be load purely wind-powered electricity generation simple process, it is impossible to fully reflect the intrinsic spy of wind-powered electricity generation Property, and analyze and be concentrated mainly in a certain respect, it is impossible to the most comprehensively assessment wind energy turbine set accesses the electrical network impact that brings system.
Summary of the invention
In view of inherent characteristic and the existing wind energy turbine set of above-mentioned wind generating technology access asking of electric network influencing analyzing evaluation method existence Topic, the present invention provides a kind of wind energy turbine set to access the analysis method to local electric network influencing counter-measure, and the method is analyzed comprehensively, in fact By property by force, provide scientific basis for the wind farm grid-connected impact of effectively assessment, it is advantageously ensured that the power grid security after wind energy turbine set access is steady Fixed operation.
In order to realize foregoing invention purpose, the present invention adopts the following technical scheme that:
The present invention provides a kind of wind energy turbine set to access the analysis method to local electric network influencing counter-measure, and described method includes following step Rapid:
Step 1: analyze output of wind electric field characteristic and and load correlation, assess its impact on partial electric grid digestion capability;
Step 2: analyze after wind energy turbine set accesses local electric network reactive-load and the impact of trend, determines that Reactive Compensation in Wind Farm configures plan Omit and control strategy;
Step 3: calculate the short circuit current that wind energy turbine set provides, checks associated bus capacity and the rupturing capacity of switchgear;
Step 4: the transient stability of partial electric grid after assessment wind energy turbine set access, proposes partial electric grid Transient Stability Control strategy;
Step 5: analyze whether every power quality index after wind energy turbine set accesses meets standard-required, and surpass at power quality index When going out standard regulation, determine feasible Management strategy.
Described step 1 specifically includes following steps:
Step 1-1: determine that wind energy turbine set intends the Wind turbines type used, i.e. can determine that the reality intending participating in all Wind turbines of calculating Power scale characteristic curve;
Step 1-2: extracting the wind energy turbine set anemometer tower actual measurement air speed data of a year, actual measurement air speed data resolution requirement is 10min, And the data extracted are carried out examination, and reject wrong data, polishing loses data, then actual measurement air speed data is converted into wind-powered electricity generation Air speed data at machine unit hub height;
Step 1-3: according to the air speed data at the measured power characteristic curve of Wind turbines and hub height, obtain each Wind turbines Power output, in conjunction with equipment state and the operating condition of Wind turbines, by Wind turbines power outputs all in wind energy turbine set Add up, obtain the power output of whole wind energy turbine set;
Step 1-4: extracting wind energy turbine set and intend accessing the partial electric grid actual load data of a year, the requirement of actual load data resolution is 10min, and the data extracted are carried out examination and mending-leakage;
Step 1-5: output of wind electric field is added on load as negative load and obtains equivalent load curve, analyze output of wind electric field With the situation of change of load, and providing the Partial Feature desired value of output of wind electric field and load correlation, assessment wind power integration is played a game The impact of portion's electrical network digestion capability.
Described step 2 specifically includes following steps:
Step 2-1: build wind energy turbine set and the wind energy turbine set-infinity electric network model of infinitely great electrical network composition, according to wind energy turbine set access point Voltage range of operation the voltage of infinitely great electrical network is set, analyze the reactive voltage characteristic of wind energy turbine set under different voltage levvl;
Step 2-2: build partial electric grid simulation model, simulation analysis wind energy turbine set reactive power flow characteristic under different running method and The reactive voltage characteristic variations situation of partial electric grid after wind energy turbine set access;
Step 2-3: according to the requirement of GB/T19963, in conjunction with the idle characteristic of wind energy turbine set and to local electric network reactive-load and trend Impact, determine wind energy turbine set reactive-load compensation configuration strategy and control strategy.
Described step 3 specifically includes following steps:
Step 3-1: based on the partial electric grid simulation model built, calculates wind energy turbine set and is in full hair-like state, and it sends circuit not coordination Put the short circuit current that when there is three phase short circuit fault, wind energy turbine set provides;
Step 3-2: when wind energy turbine set is stopped transport and completely sends out, calculates hinge joint in partial electric grid based on partial electric grid simulation model The three short circuit current of point, assesses the wind energy turbine set impact on hub node short circuit current each in partial electric grid;
Step 3-3: check associated bus capacity and the rupturing capacity of switchgear, to ensure the reliable of associated bus and switchgear Property.
Described step 4 specifically includes following steps:
Step 4-1: based on partial electric grid simulation model, transient stability during partial electric grid generation different faults after wind energy turbine set is accessed Property be analyzed, fault type includes the abnormal excision of unit tripping and wind energy turbine set in transmission line of electricity three-phase shortcircuit, net;
Step 4-2: record wind energy turbine set ruuning situation under different faults, determines the critical fault point position that wind energy turbine set is out of service;
Step 4-3: in the case of record different faults, fired power generating unit merit angle in partial electric grid, mains frequency, hub node voltage Situation of change, determines corresponding Transient Stability Control strategy according to operation of power networks directive/guide.
Described step 5 specifically includes following steps:
Step 5-1: analyze wind energy turbine set and access the voltage deviation that partial electric grid causes;
Step 5-2: based on intending using the actual measurement flickering data of Wind turbines, according to the requirement of IEC61400-21, analyze wind energy turbine set Access after electrical network, impact on electrical network flickering under different running statuses;
Step 5-3: based on intending using the actual measurement harmonic data of Wind turbines, the harmonic wave produced after wind energy turbine set is accessed partial electric grid to enter Row is analyzed;
Step 5-4: according to country's quality of power supply series standard, assessment wind energy turbine set accesses the impact on electrical network power quality indexes, And counter-measure is proposed.
Compared with prior art, the beneficial effects of the present invention is:
1. the totally different changed power in conventional power generation usage of wind-power electricity generation of a large amount of employing power electronic devices, active reactive have been taken into full account The inherent characteristics such as control, transient response;
2. the wind energy turbine set that the present invention proposes accesses the analysis method to local electric network influencing counter-measure and meets system, quantitative analysis What electrical network was brought by wind energy turbine set access affects demand;
3. the wind energy turbine set that the present invention proposes accesses comprehensive, practical to the analytical of local electric network influencing counter-measure;
4. it is effectively to assess wind energy turbine set also that the wind energy turbine set that the present invention proposes accesses the analysis method to local electric network influencing counter-measure Net impact provides scientific basis, it is advantageously ensured that the power network safety operation after wind energy turbine set access.
Accompanying drawing explanation
Fig. 1 is the analysis method flow diagram that in the embodiment of the present invention, wind energy turbine set accesses to local electric network influencing counter-measure.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Such as Fig. 1, the present invention provides a kind of wind energy turbine set to access the analysis method to local electric network influencing counter-measure, described method bag Include following steps:
Step 1: analyze output of wind electric field characteristic and and load correlation, assess its impact on partial electric grid digestion capability;
Step 2: analyze after wind energy turbine set accesses local electric network reactive-load and the impact of trend, determines that Reactive Compensation in Wind Farm configures plan Omit and control strategy;
Step 3: calculate the short circuit current that wind energy turbine set provides, checks associated bus capacity and the rupturing capacity of switchgear;
Step 4: the transient stability of partial electric grid after assessment wind energy turbine set access, proposes partial electric grid Transient Stability Control strategy;
Step 5: analyze whether every power quality index after wind energy turbine set accesses meets standard-required, and surpass at power quality index When going out standard regulation, determine feasible Management strategy.
Described step 1 specifically includes following steps:
Step 1-1: determine that wind energy turbine set intends the Wind turbines type used, i.e. can determine that the reality intending participating in all Wind turbines of calculating Power scale characteristic curve;
Step 1-2: extracting the wind energy turbine set anemometer tower actual measurement air speed data of a year, actual measurement air speed data resolution requirement is 10min, And the data extracted are carried out examination, and reject wrong data, polishing loses data, then actual measurement air speed data is converted into wind-powered electricity generation Air speed data at machine unit hub height;
Step 1-3: according to the air speed data at the measured power characteristic curve of Wind turbines and hub height, obtain each Wind turbines Power output, in conjunction with equipment state and the operating condition of Wind turbines, by Wind turbines power outputs all in wind energy turbine set Add up, obtain the power output of whole wind energy turbine set;
Step 1-4: extracting wind energy turbine set and intend accessing the partial electric grid actual load data of a year, the requirement of actual load data resolution is 10min, and the data extracted are carried out examination and mending-leakage;
Step 1-5: output of wind electric field is added on load as negative load and obtains equivalent load curve, analyze output of wind electric field With the situation of change of load, and providing the Partial Feature desired value of output of wind electric field and load correlation, assessment wind power integration is played a game The impact of portion's electrical network digestion capability.
Described step 2 specifically includes following steps:
Step 2-1: build wind energy turbine set and the wind energy turbine set-infinity electric network model of infinitely great electrical network composition, according to wind energy turbine set access point Voltage range of operation the voltage of infinitely great electrical network is set, analyze the reactive voltage characteristic of wind energy turbine set under different voltage levvl;
Step 2-2: build partial electric grid simulation model, simulation analysis wind energy turbine set reactive power flow characteristic under different running method and The reactive voltage characteristic variations situation of partial electric grid after wind energy turbine set access;
Step 2-3: according to the requirement of GB/T19963, in conjunction with the idle characteristic of wind energy turbine set and to local electric network reactive-load and trend Impact, determine wind energy turbine set reactive-load compensation configuration strategy and control strategy.
Described step 3 specifically includes following steps:
Step 3-1: based on the partial electric grid simulation model built, calculates wind energy turbine set and is in full hair-like state, and it sends circuit not coordination Put the short circuit current that when there is three phase short circuit fault, wind energy turbine set provides;
Step 3-2: when wind energy turbine set is stopped transport and completely sends out, calculates hinge joint in partial electric grid based on partial electric grid simulation model The three short circuit current of point, assesses the wind energy turbine set impact on hub node short circuit current each in partial electric grid;
Step 3-3: check associated bus capacity and the rupturing capacity of switchgear, to ensure the reliable of associated bus and switchgear Property.
Described step 4 specifically includes following steps:
Step 4-1: based on partial electric grid simulation model, transient stability during partial electric grid generation different faults after wind energy turbine set is accessed Property be analyzed, fault type includes the abnormal excision of unit tripping and wind energy turbine set in transmission line of electricity three-phase shortcircuit, net;
Step 4-2: record wind energy turbine set ruuning situation under different faults, determines the critical fault point position that wind energy turbine set is out of service;
Step 4-3: in the case of record different faults, fired power generating unit merit angle in partial electric grid, mains frequency, hub node voltage Situation of change, determines corresponding Transient Stability Control strategy according to operation of power networks directive/guide.
Described step 5 specifically includes following steps:
Step 5-1: analyze wind energy turbine set and access the voltage deviation that partial electric grid causes;
Step 5-2: based on intending using the actual measurement flickering data of Wind turbines, according to the requirement of IEC61400-21, analyze wind energy turbine set Access after electrical network, impact on electrical network flickering under different running statuses;
Step 5-3: based on intending using the actual measurement harmonic data of Wind turbines, the harmonic wave produced after wind energy turbine set is accessed partial electric grid to enter Row is analyzed;
Step 5-4: according to country's quality of power supply series standard, assessment wind energy turbine set accesses the impact on electrical network power quality indexes, And counter-measure is proposed.
Finally should be noted that: above example only in order to illustrate that technical scheme is not intended to limit, art Those of ordinary skill still the detailed description of the invention of the present invention can be modified or equivalent with reference to above-described embodiment, These are without departing from any amendment of spirit and scope of the invention or equivalent, the claim of the present invention all awaited the reply in application Within protection domain.

Claims (5)

1. a wind energy turbine set accesses the analysis method to local electric network influencing counter-measure, it is characterised in that: described method include with Lower step:
Step 1: analyze output of wind electric field characteristic and and load correlation, assess its impact on partial electric grid digestion capability;
Step 2: analyze after wind energy turbine set accesses local electric network reactive-load and the impact of trend, determines that Reactive Compensation in Wind Farm configures plan Omit and control strategy;
Step 3: calculate the short circuit current that wind energy turbine set provides, checks associated bus capacity and the rupturing capacity of switchgear;
Step 4: the transient stability of partial electric grid after assessment wind energy turbine set access, proposes partial electric grid Transient Stability Control strategy;
Step 5: analyze whether every power quality index after wind energy turbine set accesses meets standard-required, and surpass at power quality index When going out standard regulation, determine feasible Management strategy;
Described step 1 specifically includes following steps:
Step 1-1: determine that wind energy turbine set intends the Wind turbines type used, i.e. can determine that the reality intending participating in all Wind turbines of calculating Power scale characteristic curve;
Step 1-2: extracting the wind energy turbine set anemometer tower actual measurement air speed data of a year, actual measurement air speed data resolution requirement is 10min, And the data extracted are carried out examination, and reject wrong data, polishing loses data, then actual measurement air speed data is converted into wind-powered electricity generation Air speed data at machine unit hub height;
Step 1-3: according to the air speed data at the measured power characteristic curve of Wind turbines and hub height, obtain each Wind turbines Power output, in conjunction with equipment state and the operating condition of Wind turbines, by Wind turbines power outputs all in wind energy turbine set Add up, obtain the power output of whole wind energy turbine set;
Step 1-4: extracting wind energy turbine set and intend accessing the partial electric grid actual load data of a year, the requirement of actual load data resolution is 10min, and the data extracted are carried out examination and mending-leakage;
Step 1-5: output of wind electric field is added on load as negative load and obtains equivalent load curve, analyze output of wind electric field With the situation of change of load, and providing the Partial Feature desired value of output of wind electric field and load correlation, assessment wind power integration is played a game The impact of portion's electrical network digestion capability.
Wind energy turbine set the most according to claim 1 accesses the analysis method to local electric network influencing counter-measure, and its feature exists Following steps are specifically included in: described step 2:
Step 2-1: build wind energy turbine set and the wind energy turbine set-infinity electric network model of infinitely great electrical network composition, according to wind energy turbine set access point Voltage range of operation the voltage of infinitely great electrical network is set, analyze the reactive voltage characteristic of wind energy turbine set under different voltage levvl;
Step 2-2: build partial electric grid simulation model, simulation analysis wind energy turbine set reactive power flow characteristic under different running method and The reactive voltage characteristic variations situation of partial electric grid after wind energy turbine set access;
Step 2-3: according to the requirement of GB/T19963, in conjunction with the idle characteristic of wind energy turbine set and to local electric network reactive-load and trend Impact, determine wind energy turbine set reactive-load compensation configuration strategy and control strategy.
Wind energy turbine set the most according to claim 1 accesses the analysis method to local electric network influencing counter-measure, and its feature exists Following steps are specifically included in: described step 3:
Step 3-1: based on the partial electric grid simulation model built, calculates wind energy turbine set and is in full hair-like state, and it sends circuit not coordination Put the short circuit current that when there is three phase short circuit fault, wind energy turbine set provides;
Step 3-2: when wind energy turbine set is stopped transport and completely sends out, calculates hinge joint in partial electric grid based on partial electric grid simulation model The three short circuit current of point, assesses the wind energy turbine set impact on hub node short circuit current each in partial electric grid;
Step 3-3: check associated bus capacity and the rupturing capacity of switchgear, to ensure the reliable of associated bus and switchgear Property.
Wind energy turbine set the most according to claim 1 accesses the analysis method to local electric network influencing counter-measure, and its feature exists Following steps are specifically included in: described step 4:
Step 4-1: based on partial electric grid simulation model, transient stability during partial electric grid generation different faults after wind energy turbine set is accessed Property be analyzed, fault type includes the abnormal excision of unit tripping and wind energy turbine set in transmission line of electricity three-phase shortcircuit, net;
Step 4-2: record wind energy turbine set ruuning situation under different faults, determines the critical fault point position that wind energy turbine set is out of service;
Step 4-3: in the case of record different faults, fired power generating unit merit angle in partial electric grid, mains frequency, hub node voltage Situation of change, determines corresponding Transient Stability Control strategy according to operation of power networks directive/guide.
Wind energy turbine set the most according to claim 1 accesses the analysis method to local electric network influencing counter-measure, and its feature exists Following steps are specifically included in: described step 5:
Step 5-1: analyze wind energy turbine set and access the voltage deviation that partial electric grid causes;
Step 5-2: based on intending using the actual measurement flickering data of Wind turbines, according to the requirement of IEC61400-21, analyze wind energy turbine set Access after electrical network, impact on electrical network flickering under different running statuses;
Step 5-3: based on intending using the actual measurement harmonic data of Wind turbines, the harmonic wave produced after wind energy turbine set is accessed partial electric grid to enter Row is analyzed;
Step 5-4: according to country's quality of power supply series standard, assessment wind energy turbine set accesses the impact on electrical network power quality indexes, And counter-measure is proposed.
CN201410673884.7A 2014-11-21 2014-11-21 A kind of wind energy turbine set accesses the analysis method to local electric network influencing counter-measure CN104362678B (en)

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CN104779644B (en) * 2015-05-06 2017-03-22 北京天源科创风电技术有限责任公司 Wind power plant grid connection stability assessment method
CN105888987A (en) * 2016-04-21 2016-08-24 华电电力科学研究院 Wind generating set performance assessment method based on correlation analysis
CN107436959A (en) * 2016-05-26 2017-12-05 云南电网有限责任公司昭通供电局 A kind of 10kV midium voltage cables live-working safety analysis method and system
CN106099911B (en) * 2016-06-20 2018-07-24 广西电网有限责任公司电力科学研究院 A kind of power grid maximum wind digestion capability method of discrimination
CN106202729A (en) * 2016-07-12 2016-12-07 中国石油化工股份有限公司 A kind of transient characterisitics evaluation methodology of refining and petrochemical processing units electric power system
CN107769228B (en) * 2017-11-22 2020-12-08 深圳量子力能源互联网有限公司 Method for rapidly judging stability of local power grid
CN110299720A (en) * 2018-03-22 2019-10-01 北京金风科创风电设备有限公司 Wind power plant short-circuit ratio monitoring method and device

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