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中国农业大学信息与电气工程学院,北京市 100083
齐亮(1996—),男,硕士研究生,主要研究方向:电力系统调频控制。E-mail:qiliang@cau.edu.cn
王越(1982—),男,通信作者,博士,副教授,主要研究方向:电力系统运行可靠性及风险决策。E-mail:wyue@cau.edu.cn
收稿:2021-07-11,
修回:2021-12-13,
网络出版:2022-02-24,
纸质出版:2022-04-25
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齐亮,王越.考虑运行可靠性的电力系统辅助调频控制[J].电力系统自动化,2022,46(8):86-94.
QI Liang,WANG Yue.Auxiliary Frequency Regulation Control of Power System Considering Operational Reliability[J].Automation of Electric Power Systems,2022,46(8):86-94.
齐亮,王越.考虑运行可靠性的电力系统辅助调频控制[J].电力系统自动化,2022,46(8):86-94. DOI: 10.7500/AEPS20210711004.
QI Liang,WANG Yue.Auxiliary Frequency Regulation Control of Power System Considering Operational Reliability[J].Automation of Electric Power Systems,2022,46(8):86-94. DOI: 10.7500/AEPS20210711004.
高渗透率可再生能源并网对电力系统调频提出了更高的要求。针对系统遭受较大的功率扰动时传统一、二次调频能力不足的问题,有必要利用运行可靠性提前释放系统对抗大功率扰动的能力。设计了基于期望缺供电量(EENS)这一运行可靠性指标的比例-积分(PI)控制环节,实现常规发电机组常态运行时有功出力的预防性调节。该PI控制环节以系统EENS最小值为控制参考量,通过反馈EENS的实时预测值,以两者偏差作为机组出力再分配的依据。提出基于Jury判据的PI控制器参数范围整定方法。通过仿真验证了所提控制环节的有效性和优越性。
The grid-connected renewable energy with a high penetration rate puts forward higher requirements for the power system frequency regulation. In view of the problem that the traditional primary and secondary frequency regulation capabilities are insufficient when the system suffers from large power disturbances
it is necessary to use the operational reliability to release the system ability to resist large power disturbances in advance. Therefore
a proportional-integral (PI) control link based on the operational reliability index of expected energy not supplied (EENS) is designed to realize the preventive regulation of the active power output of conventional power generators during normal operation. The proposed PI control link takes the minimum EENS of the system as the control reference value and the real-time predicted value of EENS as the feedback
while uses the deviation between the two values as the basis to redistribute power outputs of units. A method for determining feasible parameter ranges of the PI controller based on the Jury criterion is proposed. The effectiveness and superiority of the proposed control link are verified by simulation.
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