| 高比例风电电力系统考虑频率安全约束的机组组合 |
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| 引用本文： | 林恒先,侯凯元,陈磊,夏德明,闵勇,秦爽,张博闻.高比例风电电力系统考虑频率安全约束的机组组合[J].电网技术,2021,45(1):1-9. |
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| 作者姓名： | 林恒先 侯凯元 陈磊 夏德明 闵勇 秦爽 张博闻 |
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| 作者单位： | 电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京市海淀区100084;国家电网有限公司东北分部,辽宁省沈阳市110180 |
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| 基金项目： | 国家自然科学基金项目(51922061);国家电网公司东北分部科技项目“特高压直流及风电高比例混合电网频率安全分析和系统保护控制策略研究”。 |
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| 摘 要： | 高比例风电接入电力系统导致转动惯量和一次调频能力降低,功率扰动下的频率安全问题凸显,机组组合中需要考虑频率安全约束.首先提出了一种简单实用的频率安全约束条件,当系统满足该约束条件时,给定功率扰动下的最大频率偏差将保持在设定限值内.将该约束条件纳入机组组合模型,同时考虑风电出力为预测区间上下限值时系统仍能够承受给定的功率...
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| 关 键 词： | 一次调频 风电功率不确定性 频率安全 机组组合 有功频率控制 线性化 |
Unit Commitment of Power System With High Proportion of Wind Power Considering Frequency Safety Constraints |
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| LIN Hengxian,HOU Kaiyuan,CHEN Lei,XIA Deming,MIN Yong,QIN Shuang,ZHANG Bowen.Unit Commitment of Power System With High Proportion of Wind Power Considering Frequency Safety Constraints[J].Power System Technology,2021,45(1):1-9. |
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| Authors: | LIN Hengxian HOU Kaiyuan CHEN Lei XIA Deming MIN Yong QIN Shuang ZHANG Bowen |
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| Affiliation: | (State Key Lab of Control and Simulation of Power System and Generation Equipment(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China;Northeast Branch of State Grid Corporation of China,Shenyang 110180,Liaoning Province,China) |
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| Abstract: | The connection of high proportion of wind power into the power system results in the reduction of the system inertia and the primary frequency regulation capability,which may highlight the issue of frequency safety under power disturbances.Therefore,the frequency safety constraints need to be considered in the unit commitment.First,a simple and practical frequency safety constraint is proposed.When the system satisfies this constraint,the maximum frequency deviation under a given power disturbance remains in the set range.By incorporating this constraint into the unit commitment model,and on the basis that the system can still bear the corresponding power disturbances when the wind power output is in the extreme case,an unit commitment model is established considering the wind power uncertainty and the frequency safety constraints.Simulation results show that the proposed unit commitment model takes into account the uncertainty of wind power,and can also meet the frequency safety needs of the system under high power disturbances. |
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| Keywords: | primary frequency regulation wind power uncertainty frequency safety unit commitment active power and frequency control linearization |
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