WO2017084404A1 - Procédé d'estimation de capacité d'envoi d'énergie éolienne à un réseau, permettant de tenir compte de la contrainte parc-hors-réseau - Google Patents

Procédé d'estimation de capacité d'envoi d'énergie éolienne à un réseau, permettant de tenir compte de la contrainte parc-hors-réseau Download PDF

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Publication number
WO2017084404A1
WO2017084404A1 PCT/CN2016/097019 CN2016097019W WO2017084404A1 WO 2017084404 A1 WO2017084404 A1 WO 2017084404A1 CN 2016097019 W CN2016097019 W CN 2016097019W WO 2017084404 A1 WO2017084404 A1 WO 2017084404A1
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WO
WIPO (PCT)
Prior art keywords
wind power
grid
wind
limit
farm
Prior art date
Application number
PCT/CN2016/097019
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English (en)
Chinese (zh)
Inventor
李惠玲
郑超
宋云亭
张鑫
吕思卓
李顺昕
杨金刚
李笑蓉
张志强
唐晓骏
陈得治
陈湘
李再华
Original Assignee
中国电力科学研究院
国家电网公司
国网冀北电力有限公司经济技术研究院
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Publication of WO2017084404A1 publication Critical patent/WO2017084404A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • 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

Definitions

  • the invention relates to the field of detecting wind power transmission capability of a power grid, and particularly relates to a method for evaluating wind power transmission capability of a power grid considering a wind power grid off constraint.
  • Wind power is a clean and renewable energy source. Wind power is an important supplement to conventional energy, and it plays an important role in adjusting energy structure, protecting the environment, coping with climate change and promoting sustainable development. Vigorously developing wind power has become an important task of current energy work and the long-term direction of China's power industry development.
  • the power transmission capacity of regional power grids is restricted by many factors, such as low voltage ride through capability, line transmission capacity, and main transformer capacity.
  • low voltage ride through capability When large-scale wind power is connected to the regional power grid, if the wind farms of different capacities are disconnected from the network, the power transmission of the line will be reduced. If the operation of the voltage regulating equipment is not considered, the system voltage will inevitably rise, thus affecting the regional power grid. Wind power delivery capability.
  • the method for evaluating the wind power transmission capability of the power grid considering the wind power off-network constraint is provided to solve at least the above problems in the prior art.
  • An embodiment of the present invention provides a method for evaluating a wind power transmission capability of a power grid, which includes a wind farm off-network constraint, and the method includes:
  • Step 1 Calculate a grid wind power transmission limit parameter group of the assessment area according to the AC/DC grid data of the assessment area;
  • Step 2 Establishing a wind power transmission capability evaluation based on the grid wind power sending limit parameter group model
  • Step 3 Determine, according to the grid wind power sending capability evaluation model, the grid wind power sending capability of the assessment area.
  • the present invention provides a method for evaluating the wind power transmission capacity of a power grid that takes into account the wind power off-coupling constraints, and calculates the wind power transmission limit parameter group of the evaluation area according to the AC and DC power grid data in the assessment area.
  • the grid wind power delivery limit parameter group the grid wind power transmission capacity assessment model is established; according to the grid wind power delivery capability assessment model, the grid wind power delivery capability of the assessment area is determined.
  • the method proposed by the invention can quickly and accurately find the important constraint conditions for restricting the wind power transmission capacity of the regional power grid, thereby improving the wind power transmission capability of the regional power grid and maximizing the development and utilization of the wind energy resources.
  • the technical solution provided by the present invention focuses on the analysis of the effects of large-scale wind turbine off-grid and voltage deviation caused by wind power fluctuation; and can quickly and accurately find important constraints that restrict the wind power transmission capacity of the regional power grid. Thereby improving the wind power transmission capacity of the regional power grid.
  • the technical solution provided by the present invention is not only limited to the low voltage ride-through capability of the wind turbine, but also comprehensively considers the thermal stability constraint of the power grid, the safety and stability constraints, the voltage offset effect caused by the large-scale wind turbine off-grid, and the wind power. Fluctuation effects.
  • FIG. 1 is a flow chart of a method for evaluating a wind power output capability of a power grid considering a wind farm off-grid constraint according to the present invention
  • Figure 2 is a flow chart of step 1 in the evaluation method of the present invention.
  • FIG. 3 is a schematic diagram of a regional power grid wind farm access system according to a specific application example of a method for evaluating a wind power transmission capability of a power grid according to a wind farm off-grid constraint;
  • FIG. 4 is a flow chart showing a specific application example of the evaluation method of the present invention.
  • the present invention provides a method for evaluating a wind power transmission capability of a power grid that takes into account a wind farm off-grid constraint, and includes the following steps:
  • Step 1 Calculate the grid wind power transmission limit parameter group of the assessment area according to the AC/DC grid data in the assessment area;
  • Step 2 According to the grid wind power delivery limit parameter group, establish a grid wind power delivery capability evaluation model
  • Step 3 Determine the grid wind power delivery capability of the assessment area based on the grid wind power delivery capability assessment model.
  • step 1 includes:
  • the AC/DC grid data includes: the conductor type and line length of the wind power transmission channel in the assessment area, the number of wind farms of the wind power collection station, and the transformer capacity of the wind power collection station. And the number of units, the maximum allowable offset value of the transformer bus voltage of the wind power collection station, and the maximum allowable offset value of the wind turbine terminal voltage;
  • the grid wind power transmission limit parameter group includes: wind power collection station transformer capacity limit, wind power transmission channel thermal stability limit and transient stability The limit, the wind farm off-grid and the wind farm output after the wind farm output fluctuations limit.
  • 1-2 includes:
  • P e,i is the rated capacity of transformer i in the wind power collection station
  • N T is the number of transformers in the aggregation station
  • the wire type of the wind power sending channel respectively determine the thermal stable current value and the thermal stable power value of the T constant and T high wire; wherein, 20 ° ⁇ T often ⁇ 30 ° and 30 ° ⁇ T high ⁇ 50 °;
  • the thermally stable power value, calculating the thermal stability limit T are normally fed to the wind passage at a high temperature T P WH;
  • the transient stability limit P WS is obtained ;
  • the wind power transmission limit P WO of the wind farm off-grid is calculated.
  • step d includes:
  • the terminal voltage allows the maximum offset value, The maximum allowable offset value for the transformer bus voltage of the wind power collection station;
  • Equation (2) is established, that is, ⁇ U GV,i and ⁇ U TV,i are not limited, then directly enter d-3;
  • N W is the number of wind farms connected to the wind power collection station
  • step e includes:
  • Scenario 2 The influence of wind power fluctuation on the grid voltage when the simulated wind power output is small
  • equation (5) If equation (5) is established, it will enter e-3 directly;
  • equation (8) does not hold, adjust the wind power output to formula (8); enter e-6;
  • equation (8) If equation (8) is established, it will enter e-6 directly;
  • step 2 includes:
  • step 3 includes:
  • the result value of the wind power transmission capacity evaluation model P W and P W is the power supply capacity of the grid in the assessment area.
  • the present invention provides a specific application example of a method for evaluating a wind power output capability of a power grid, which includes a wind farm off-network constraint, and includes the following steps:
  • the AC grid data in step (1) includes AC transmission line parameters and transformer parameters; the DC transmission system data includes DC transmission system controller parameters.
  • the transformer limit of the wind power collection station in step (2) is determined by:
  • the thermal stability limit in step (3) is determined according to the following method:
  • the present invention provides a further preferred method for estimating the wind power transmission capability of a regional power grid that takes into account the wind farm off-grid constraint.
  • the transient stability limit P WS in the step (4) is obtained by the power flow calculation and the transient stability calculation.
  • the voltage deviation impact assessment caused by the large-scale wind farm off-grid in step (5) is determined by the following method:
  • the terminal voltage allows the maximum offset value
  • the maximum offset allowed for the transformer bus voltage of the aggregation station, N W is the number of wind farms connected to the wind power collection station.
  • step (6) The effect of wind power fluctuations in step (6) is determined by the following method:
  • scenario 1 impact of wind power fluctuation on grid voltage when simulating wind power output is large
  • scenario 2 impact of wind power fluctuation on grid voltage when simulated wind power output is small.
  • the regional grid wind power transmission capability in step (7) is obtained by comprehensively comparing the thermal stability limit, the temporary stability limit, and the voltage offset level, that is,
  • P W min(P WH , P WS , P WO , P WV ) (24).
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage device includes the following steps: the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • ROM read-only memory
  • RAM random access memory
  • magnetic disk or an optical disk.
  • optical disk A medium that can store program code.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un procédé d'estimation de capacité d'envoi d'énergie éolienne à un réseau, qui permet de tenir compte de la contrainte parc-hors-réseau, comprenant les étapes suivantes : en fonction des données de réseau de courant alternatif et de courant continu d'une zone estimée, obtenir, par calcul, un groupe de paramètres finaux d'envoi d'énergie éolienne à un réseau de la zone estimée (1) ; en fonction du groupe de paramètres finaux d'envoi d'énergie éolienne à un réseau, établir un modèle d'estimation de capacité d'envoi d'énergie éolienne à un réseau (2) ; et en fonction du modèle d'estimation de capacité d'envoi d'énergie éolienne à un réseau, déterminer la capacité d'envoi d'énergie éolienne à un réseau de la zone estimée (3).
PCT/CN2016/097019 2015-11-20 2016-08-26 Procédé d'estimation de capacité d'envoi d'énergie éolienne à un réseau, permettant de tenir compte de la contrainte parc-hors-réseau WO2017084404A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510813180.X 2015-11-20
CN201510813180.XA CN106786788B (zh) 2015-11-20 2015-11-20 一种计及风电场脱网约束的电网风电送出能力评估方法

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Cited By (9)

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CN109829563A (zh) * 2018-12-18 2019-05-31 广东电网有限责任公司电力调度控制中心 一种基于多参数规划的馈线传输极限容量评估方法
CN111030167A (zh) * 2019-11-29 2020-04-17 国网山东省电力公司经济技术研究院 一种大规模海上风电场接入方案生成方法及系统
CN112417643A (zh) * 2020-10-13 2021-02-26 国网山东省电力公司电力科学研究院 基于送风机电流的火电机组最大出力实时评估方法及系统
CN113241801A (zh) * 2021-04-14 2021-08-10 国家电网公司华北分部 一种基于电压稳定约束的新能源临界渗透率确定方法及装置
CN113241792A (zh) * 2021-05-21 2021-08-10 中国电力科学研究院有限公司 一种对电力电子电源并网机型规划的方法及装置
CN113746136A (zh) * 2021-09-09 2021-12-03 广东电网有限责任公司广州供电局 基于暂态极限的风火打捆外送容量配置方法、装置及设备
CN114154293A (zh) * 2021-10-20 2022-03-08 广东电网有限责任公司阳江供电局 基于实时数据的直驱风电场等值建模方法和装置
CN115510677A (zh) * 2022-10-17 2022-12-23 华能山东发电有限公司 一种风电场发电能力评估方法及系统
CN116436020A (zh) * 2023-05-05 2023-07-14 国网湖南省电力有限公司 新能源上网汇集站的需求判定方法及系统

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CN113708371B (zh) * 2021-09-23 2022-06-24 国网湖南省电力有限公司 风电场送出线路的最大传输容量计算方法

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CN104242354B (zh) * 2014-06-18 2018-01-05 国家电网公司 计及风光出力相关性的新能源集中外送运行特性评估方法
CN104362671B (zh) * 2014-10-27 2018-03-16 国家电网公司 一种大规模风电和抽水蓄能联合送出多目标优化协调方法

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US20150278405A1 (en) * 2014-03-31 2015-10-01 Vestas Wind Systems A/S Method for evaluating a performance prediction for a wind farm
CN104979824A (zh) * 2015-05-16 2015-10-14 国网宁夏电力公司经济技术研究院 评估大规模风电集中外送输电规划方案技术经济性的方法

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Publication number Priority date Publication date Assignee Title
CN109829563A (zh) * 2018-12-18 2019-05-31 广东电网有限责任公司电力调度控制中心 一种基于多参数规划的馈线传输极限容量评估方法
CN109829563B (zh) * 2018-12-18 2023-08-29 广东电网有限责任公司电力调度控制中心 一种基于多参数规划的馈线传输极限容量评估方法
CN111030167B (zh) * 2019-11-29 2023-01-24 国网山东省电力公司经济技术研究院 一种大规模海上风电场接入方案生成方法及系统
CN111030167A (zh) * 2019-11-29 2020-04-17 国网山东省电力公司经济技术研究院 一种大规模海上风电场接入方案生成方法及系统
CN112417643A (zh) * 2020-10-13 2021-02-26 国网山东省电力公司电力科学研究院 基于送风机电流的火电机组最大出力实时评估方法及系统
CN112417643B (zh) * 2020-10-13 2023-05-30 国网山东省电力公司电力科学研究院 基于送风机电流的火电机组最大出力实时评估方法及系统
CN113241801A (zh) * 2021-04-14 2021-08-10 国家电网公司华北分部 一种基于电压稳定约束的新能源临界渗透率确定方法及装置
CN113241801B (zh) * 2021-04-14 2023-06-30 国家电网公司华北分部 一种基于电压稳定约束的新能源临界渗透率确定方法及装置
CN113241792A (zh) * 2021-05-21 2021-08-10 中国电力科学研究院有限公司 一种对电力电子电源并网机型规划的方法及装置
CN113746136A (zh) * 2021-09-09 2021-12-03 广东电网有限责任公司广州供电局 基于暂态极限的风火打捆外送容量配置方法、装置及设备
CN114154293A (zh) * 2021-10-20 2022-03-08 广东电网有限责任公司阳江供电局 基于实时数据的直驱风电场等值建模方法和装置
CN115510677A (zh) * 2022-10-17 2022-12-23 华能山东发电有限公司 一种风电场发电能力评估方法及系统
CN115510677B (zh) * 2022-10-17 2024-01-09 华能山东发电有限公司 一种风电场发电能力评估方法及系统
CN116436020A (zh) * 2023-05-05 2023-07-14 国网湖南省电力有限公司 新能源上网汇集站的需求判定方法及系统
CN116436020B (zh) * 2023-05-05 2024-05-07 国网湖南省电力有限公司 新能源上网汇集站的需求判定方法及系统

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