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| Parameter Setting Method and Field Application of Reactive Power Damping Controller for Flexible Excitation System |
| Zhang Jiancheng1, Zhang Tiantian2, Xiong Hongtao1, Han Bing3, Su Chengfeng4 |
1.State Grid Zhejiang Electric Power Research Institute Hangzhou 310014 China;
2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China;
3. NR Electric Co. Ltd Nanjing 211102 China;
4. Wenzhou Baizhangji Hydropower Station Wenzhou 325300 China |
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Abstract Based on the verified complex torque model, the parameter setting method of reactive power damping controller (RPDC) for flexible excitation system is proposed in this paper. The Philips-Heffron model with flexible excitation system is built by the linearized modeling method, and the small perturbation complex torque models of both PSS control channel and RPDC control channel are deduced. Then, the quantitative analysis of different influencing factors are carried out. The complex torque model is verified by the measured uncompensated phase-frequency characteristic of PSS control channel. Based on the verified complex torque model, the lead-lag parameters of RPDC are adjusted to achieve the maximum damping torque. The field test results show that, using the proposed parameter setting method, the local machine frequency power oscillation can be effectively suppressed by the RPDC, which is also the first time to successfully apply RPDC in practice and lays a good foundation to take the advantage of double damping channels of flexible excitation system for suppressing the wider frequency power oscillation in new power system.
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Received: 29 October 2021
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2022, Vol. 37 
