Fast Frequency Response Analysis and Efficient Test Device Design of New Energy Station

doi:10.11930/j.issn.1004-9649.202410061

Abstract

Abstract:

With the large-scale access of new energy to the power grid, the frequency response performance of the power station is becoming increasingly critical, and its rapid response capability has become an important support for ensuring the stability of the power grid. In view of this challenge, an efficient test design scheme for the rapid frequency response technology of new power stations is proposed. Firstly, the inherent defects of the phase locked loop (PLL) and the characteristics of the frequency response index under the condition of grid connection are analyzed., a fixed trajectory control strategy is proposed to suppress the power fluctuation under the frequency disturbance condition. Then, the rapid frequency response test system architecture is constructed, which supports voltage feed and generation control (AGC) command feedback to realize dynamic response test. Finally, the developed engineering application system can adapt to a variety of test environments, and the verification scheme not only the requirements of relevant standards, but also improves accuracy and efficiency.

Key words: new energy stations, fast frequency response, fixed trajectory control strategy, efficient test system

ZHANG Ruixiao, LIANG Li, WANG Dingmei. Fast Frequency Response Analysis and Efficient Test Device Design of New Energy Station[J]. Electric Power, 2025, 58(5): 144-151.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202410061

https://www.electricpower.com.cn/EN/Y2025/V58/I5/144

Figures/Tables 17

References 19

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场站	$ {t_{\rm hx}} $/s	$ {t_{0.9}} $/s	$ {t_{\rm s}} $/s	调频控制偏差/%
光伏场站	≤3	≤5	≤15	±1
风电场站	≤3	≤12	≤15	±1

场站	$ {t_{\rm hx}} $/s	$ {t_{0.9}} $/s	$ {t_{\rm s}} $/s	调频控制偏差/%
光伏场站	≤3	≤5	≤15	±1
风电场站	≤3	≤12	≤15	±1

序号	频率扰动类型	阶跃目标频率/Hz	响应滞后时间/s	响应时间/s	调节时间/s	控制偏差/%	测试结论
1	20%~30%P_n 阶跃上扰	50.21	0.440	0.540	0.540	–0.131	合格
2	20%~30%P_n 阶跃上扰		0.477	0.577	0.577	–0.004
3	50%~90%P_n 阶跃上扰		0.474	0.574	0.574	–0.217
4	50%~90%P_n 阶跃上扰		0.496	0.596	0.596	–0.155
5	20%~30%P_n 阶跃下扰	49.79	0.619	0.719	0.719	0.089
6	20%~30%P_n 阶跃下扰		0.450	0.550	0.550	0.029
7	50%~90%P_n 阶跃下扰		0.463	0.563	0.563	–0.059
8	50%~90%P_n 阶跃下扰		0.455	0.555	0.555	–0.107

序号	频率扰动类型	阶跃目标频率/Hz	响应滞后时间/s	响应时间/s	调节时间/s	控制偏差/%	测试结论
1	20%~30%P_n 阶跃上扰	50.21	0.440	0.540	0.540	–0.131	合格
2	20%~30%P_n 阶跃上扰		0.477	0.577	0.577	–0.004
3	50%~90%P_n 阶跃上扰		0.474	0.574	0.574	–0.217
4	50%~90%P_n 阶跃上扰		0.496	0.596	0.596	–0.155
5	20%~30%P_n 阶跃下扰	49.79	0.619	0.719	0.719	0.089
6	20%~30%P_n 阶跃下扰		0.450	0.550	0.550	0.029
7	50%~90%P_n 阶跃下扰		0.463	0.563	0.563	–0.059
8	50%~90%P_n 阶跃下扰		0.455	0.555	0.555	–0.107

序号	频率扰动类型	阶跃目标频率/Hz	响应滞后时间/s	响应时间/s	调节时间/s	控制偏差/%	测试结论
1	20%~30%P_n	50.21→ 49.79	0.480	0.740	0.740	0.261	合格
1	20%~30%P_n		0.517	0.767	0.767	0.244
2	50%~90%P_n		0.504	0.842	0.842	0.217
2	50%~90%P_n		0.526	0.846	0.846	0.175
3	20%~30%P_n	49.79→ 50.21	0.719	0.756	0.756	0.293
3	20%~30%P_n		0.640	0.750	0.750	0.345
4	50%~90%P_n		0.563	0.753	0.753	0.450
4	50%~90%P_n		0.580	0.724	0.724	0.310