| 引用本文: | 宁世超,吕林,刘友波,许立雄,袁川,杜新伟.高渗透率风电接入下地区高压电网转供模型[J].电力自动化设备,2018,(6): |
| NING Shichao,L? Lin,LIU Youbo,XU Lixiong,YUAN Chuan,DU Xinwei.Transfer model of regional high voltage power system containing high penetration of wind power[J].Electric Power Automation Equipment,2018,(6): |
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| 摘要: |
| 中等规模风电通常经35 kV及以上电压等级系统直接并入地区电网，具有非均匀接入特性及不确定性，易导致地区电网出现局部消纳困难与局部负荷重载并存的现象，造成阻塞风险甚至消纳困境。基于高压配电网的拓扑重构能力，提出以110 kV变电单元组的可行拓扑状态为控制对象的高压配电网机会约束转供模型，利用风电-负荷误差的概率密度函数对随机变量进行多状态建模，以源荷功率均衡分布为目标，构建不确定性条件下以拓扑重构为手段的高压电网运行优化技术。实际算例测试表明，所提方法能有效疏导高渗透率风电非均匀接入后地区高压电网的消纳矛盾，并有助于提升高压电网资产的利用效率以平抑阻塞风险。 |
| 关键词: 地区高压电网 风电 消纳 非均匀接入 高渗透率 机会约束 功率均衡 转供模型 |
| DOI：10.16081/j.issn.1006-6047.2018.06.008 |
| 分类号:TM614;TM721 |
| 基金项目:国家高技术研究发展计划(863计划)资助项目(2014AA051901)；四川省科技厅应用基础项目(2015JY0128) |
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| Transfer model of regional high voltage power system containing high penetration of wind power |
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NING Shichao1, L? Lin1, LIU Youbo1, XU Lixiong1, YUAN Chuan2, DU Xinwei2
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1.College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China;2.States Grid Sichuan Electric Power Company, Chengdu 610041, China
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| Abstract: |
| The non-uniform access and uncertainty of medium-scale wind power, which is commonly incorporated into regional power system of 35 kV and above voltage levels directly, easily lead to the co-existence of local accommodation difficulty and local overload, causing load congestion risks and even accommodation dilemmas. Based on the topology reconfiguration ability of high-voltage distribution network, a chance-constrained transfer model is proposed with the feasible topological states of 110 kV transformer unit groups as its control objects. The probability density functions of wind power and load errors are applied to construct multi-state models of random variables. An operation optimization technology is established based on the topology reconfiguration ability of regional high-voltage power system under uncertainties, which takes the equilibrium distribution of source and load power as its objective. The actual example test shows that the proposed method can effectively ease the accommodation contradiction of the regional high-voltage power system containing high penetration of non-uniform access of wind power, and is helpful for improving the equipment utilization to suppress the load congestion risks. |
| Key words: regional high-voltage power system wind power accommodation non-uniform access high penetration chance constraint power balance transfer model |
