摘要
研究了负荷中心受端电网特高压直流系统与海上风电的交互影响特性。首先从直流系统与海上风电落点间电气距离、接入点系统等值阻抗、海上风电机组自身的无功电压特性等方面分析了特高压直流系统与海上风电交互影响的关键因素,然后解析了二者交互作用阻抗表达式,计及特高压直流系统及海上风电落点交流系统强度,提出了直流系统与海上风电交互影响评价指标的快速计算方法,并通过实际电网算例进行了验证。研究结果表明,直流系统与海上风电电气距离越小、接入点系统等值阻抗越大,交互影响越明显。
This paper studies characteristics of interactive effects between HVDC of the receiving-end power grid in the load center and offshore wind power. It firstly analyzes key factors of interactive effects in aspects of electric distance between drop points of the DC system and offshore wind power, equivalent impedance of the access point (AP) system, reactive power voltage characteristic of the offshore wind turbines, and so on. Then it analyzes expressions of interactive effects and presents a rapid calculation method for evaluation index of interactive effects which takes strength of the drop point AC system of HVDC and offshore wind power into account. By means of examples of actual power grid, it makes verification. The research result indicate that the electric distance between the DC system and offshore wind power is closer, the equivalent impedance of the AP system is larger and interactive effect is more prominent.
作者
黄方能
张红丽
马骞
朱玲
刘福锁
郜建良
HUANG Fangneng;ZHANG Hongli;MA Qian;ZHU Ling;LIU Fusuo;GAO Jianliang(CSG Power Dispatching Control Center,Guangzhou,Guangdong 510663,China;NARI Group Corporation,Nanjing,Jiangsu 211106,China)
出处
《广东电力》
2019年第3期96-103,共8页
Guangdong Electric Power
基金
中国南方电网有限责任公司科研项目
关键词
受端电网
特高压直流系统
海上风电
等值阻抗
交互影响
receiving-end power grid
UHVDC
offshore wind power
equivalent impedance
interactive effect
