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海上风电场黑启动系统的风柴协同控制策略
作者:
作者单位:

1.华南理工大学电力学院,广东省广州市 510006;2.中国能源建设集团广东省电力设计研究院有限公司,广东省广州市 510663

作者简介:

通讯作者:

基金项目:

国家自然科学基金资助项目(51977082);中央高校基本科研业务费专项资金资助项目(x2dl-D2181850)。


Coordinated Control Strategy of Wind Turbine and Diesel Generator for Black-start System of Offshore Wind Farm
Author:
Affiliation:

1.School of Electric Power, South China University of Technology, Guangzhou 510006, China;2.China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd, Guangzhou 510663, China

Fund Project:

This work is supported by National Natural Science Foundation of China (No. 51977082) and the Fundamental Research Funds for the Central Universities (No. x2dl-D2181850).

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    摘要:

    在风电平价上网政策的推动下中国海上风电场建设加速,未来大规模的海上风电场将会成为沿海地区局域电网的重要供电电源。当沿海局域电网发生大停电时,海上风电场若具备作为黑启动电源的能力将显著加快电网恢复过程。为启动沿岸无黑启动能力的火电机组,文中提出了利用海上风电场配置的小容量辅助柴油发电机作为支撑电源启动海上风电机组,后经主变压器和高压海底电缆向陆上火电机组辅机供电的黑启动方案。为改善黑启动系统的频率调节能力以及在投入高压海底电缆时维持系统电压稳定,分别提出一种风柴协同调频控制和一种考虑柴油发电机功率极限的动态无功补偿控制,后者利用了双馈风机网侧变流器(WGSC)作为静止无功发生器(SVG)运行。最后在PSCAD/EMTDC上依据实例搭建了海上风电场黑启动模型,验证了所提方案及策略的可行性和有效性。

    Abstract:

    The construction of offshore wind farms in China has been accelerated with the promotion of wind power parity policy. In the future, large-scale offshore wind farms will become an important power supply for local power grids in coastal areas. When power outages occur in coastal local power grids, if offshore wind farms can act as black-start power sources, the restoration process of power grids will be significantly enhanced. In order to start coastal thermal power units without the black-start capability, a black-start scheme is proposed, which uses small-capacity auxiliary diesel generators equipped in offshore wind farms as supporting power to start offshore wind turbines, and then supplies power to onshore thermal power plants via main transformers and high-voltage submarine cables. In order to improve the frequency regulation ability of the black-start system and maintain the system voltage stability when the high-voltage submarine cable is put into operation, a coordinated frequency modulation control method of wind turbine and diesel generator and a dynamic reactive power compensation control method considering the power limit of diesel generator are proposed, respectively. The latter uses grid-side converters of wind turbine working as the sources of static reactive power. Finally, a black-start model of offshore wind farm is built on PSCAD/EMTDC to verify the feasibility and effectiveness of the proposed operation scheme and control strategy.

    表 1 Table 1
    表 2 Table 2
    表 4 Table 4
    表 3 Table 3
    图1 海上风电场黑启动系统Fig.1 Black-start system of offshore wind farm
    图2 海上风电场黑启动流程Fig.2 Black-start process of offshore wind farm
    图3 海上风电场黑启动过程的风柴协同控制原理Fig.3 Principle of coordinated control of wind turbine and diesel generator for black-start process of offshore wind farm
    图4 向陆上火电厂送电过程的系统无功和电压Fig.4 System reactive power and voltage in the process of power transmission to onshore thermal power plant
    图5 向陆上火电厂送电过程的系统有功和频率Fig.5 System active power and frequency in the process of power transmission to onshore thermal power plant
    图 黑启动仿真全过程的风速Fig. Wind speed in the whole process of black start simulation
    图 柴油发电机零升压启动Fig. Zero Boost Starting of Diesel Generator
    图 WGSC和双馈风电机组投入运行阶段Fig. Start-up stage of WGSC and doubly-fed wind turbine
    图 双馈风电机组启动阶段状态Fig. State of double fed wind turbine in start-up stage
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引用本文

陈夏,辛妍丽,唐文虎,等.海上风电场黑启动系统的风柴协同控制策略[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20191024002.
CHEN Xia,XIN Yanli,TANG Wenhu,et al.Coordinated Control Strategy of Wind Turbine and Diesel Generator for Black-start System of Offshore Wind Farm[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20191024002.

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  • 收稿日期:2019-10-24
  • 最后修改日期:2020-05-06
  • 录用日期:2020-03-04
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