| 引用本文: | 刘铖,王旭,蔡国伟,张宇驰.基于负荷模式能量的电力系统低频振荡抑制策略[J].电力自动化设备,2022,42(7): |
| LIU Cheng,WANG Xu,CAI Guowei,ZHANG Yuchi.Power system low-frequency oscillation suppression strategy based on load mode energy[J].Electric Power Automation Equipment,2022,42(7): |
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| 摘要: |
| 随着电力市场化和需求侧管理的快速发展，以及虚拟电厂聚合平台的逐步成熟，负荷可控性越来越强，为从负荷侧抑制低频振荡提供了可能。针对系统在振荡过程中出现的小干扰稳定问题，提出了基于负荷模式能量的电力系统低频振荡调控策略。构建电力系统小干扰负荷模式能量函数，从负荷的角度揭示电力系统低频振荡特性。基于负荷模式能量建立负荷的低频振荡评价指标与灵敏度指标，确定负荷参与改善系统小干扰特性的调控方式，对所有可控负荷进行排序，筛选出最优调控负荷。最后，对3机9节点系统和16机68节点系统算例进行仿真计算，结果表明所提控制策略可有效抑制系统振荡。 |
| 关键词: 可控负荷 负荷模式能量函数 低频振荡 负荷灵敏度指标 小干扰稳定 |
| DOI：10.16081/j.epae.202204081 |
| 分类号:TM712 |
| 基金项目:国家自然科学基金青年基金项目(52007027)；国家重点研发计划项目(2021YFB2400800)；吉林市科技创新发展计划项目(20210103093)；吉林省教育厅科学研究项目(JJKH20210092KJ) |
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| Power system low-frequency oscillation suppression strategy based on load mode energy |
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LIU Cheng, WANG Xu, CAI Guowei, ZHANG Yuchi
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Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education, Northeast Electric Power University, Jilin 132012, China
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| Abstract: |
| With the rapid development of electricity marketization and demand-side management, as well as the gradual maturity of virtual power plant aggregation platform, the load controllability is getting stronger and stronger, which provides the possibility for suppressing low-frequency oscillation at the load side. Aiming at the small-disturbance stability problem in the system oscillation process, the power system low-frequency oscillation control strategy based on load mode energy is proposed. The energy function of the small-disturbance load mode for the power system is constructed, and the low-frequency oscillation characteristics of the power system are revealed from the perspective of load. Based on load mode energy, the low-frequency oscillation evaluation index and sensitivity index of load are established. The control method for load to participate in improving the small-disturbance characteristics of system is determined. Then, all controllable loads are sorted to select the optimal control load. Finally, simulations are carried out for the 3-machine 9-bus system and 16-machine 68-bus system, and the results show that the proposed control strategy can effectively suppress system oscillation. |
| Key words: controllable load load mode energy function low-frequency oscillation load sensitivity index small-disturbance stability |
