引用本文:李自明,姚秀萍,王海云,等.计及风电场静态电压稳定性的VMP系统无功电压控制策略研究[J].电力系统保护与控制,2016,44(21):77-83.
LI Ziming,YAO Xiuping,WANG Haiyun,et al.Study on reactive power and voltage control strategy of VMP system considering static voltage stability of wind farm[J].Power System Protection and Control,2016,44(21):77-83
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计及风电场静态电压稳定性的VMP系统无功电压控制策略研究
李自明1,姚秀萍2,王海云1,王维庆1,常喜强2,郭小龙2
(1.新疆大学电气工程学院可再生能源发电与并网技术教育部工程研究中心，新疆 乌鲁木齐 830047;
2..新疆电力调度控制中心，新疆 乌鲁木齐 830001)
摘要:
随着规模化、集群化风电基地的初步建成，风电作为一种清洁高效的能源得到了快速的发展，但短时间内大规模风电场集中接入电网，给电网的功率平衡带来扰动，造成了电网电压的不稳定。针对风电场并网后的电压控制问题，研究了大规模风电场并网的静态电压稳定机理。并在现有调压手段的基础上，通过适时调整风电机组无功出力，升压站变压器抽头以及调无功补偿装置，进一步提出了基于分层管理的无功功率/电压控制策略，并将该策略嵌入到风电场电压/无功自动管理平台(VMP)。通过新疆某地区风电场现场试验发现，该控制策略能够改善低电压穿越期间无功表现，提高风电场无功电压的稳定性，同时避免了功率振荡的产生。该研究结果可以为风电场无功电压协调控制的理论研究和工程实际提供参考依据。
关键词:  风电并网  静态电压稳定  VMP系统  无功电压控制
DOI：10.7667/PSPC151809
分类号:
基金项目:国家自然科学基金项目(51267017);自治区重点实验室项目(2016D03021)
Study on reactive power and voltage control strategy of VMP system considering static voltage stability of wind farm
LI Ziming1,YAO Xiuping2,WANG Haiyun1,WANG Weiqing1,CHANG Xiqiang2,GUO Xiaolong2
(1. Engineering Research Center for Renewable Energy Power Generation＆Grid Technology Approved by Education Ministry for its Establishment under College of Electrical Engineering, Xinjiang University, Urumqi 830047, China;
;2. Xinjiang Electric Power Dispatching and Control Center, Urumqi 830001, China)
Abstract:
With the preliminary development of large-scale and cluster wind power base, wind power has been developed rapidly as a clean and efficient energy. But extensive wind farms are connected to the power grid in a short time, which brings disturbance to the power balance and cause the instability of the voltage of the power network. According to the voltage control problems of wind farm integration, in this paper, the mechanism of static voltage stability of large-scale wind farm group is studied. Through adjusting the reactive power of the wind power generator, the transformer taps of boost substation and the reactive power compensation device are timely adjusted on the basis of existing adjustment method for voltage. A reactive power/voltage control strategy based on hierarchical management is further proposed, which is embedded into the voltage/var management platform (VMP) for wind farm. It is found that the control strategy can improve the performance of reactive power during the period of low voltage ride through, and improve the stability of the reactive power and voltage of the wind farm, and also avoid the generation of power oscillation by the test-in-place of a certain area in Xinjiang. The study provides a basis and reference for theoretical research and practical engineering on reactive power coordinated control strategy for wind farms. This work is supported by National Natural Science Foundation of China (No. 51267017).
Key words:  wind power integration  static voltage stability  VMP system  reactive power and voltage control
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