综合能源交直流混联外送系统暂态过电压分析与快速估算

衣立东; 摆世彬; 张文朝; 田志浩; 柳顺楠; 刘刚

doi:10.19912/j.0254-0096.tynxb.2022-0101

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (6) : 122-129. DOI: 10.19912/j.0254-0096.tynxb.2022-0101

综合能源交直流混联外送系统暂态过电压分析与快速估算

衣立东¹, 摆世彬¹, 张文朝², 田志浩¹, 柳顺楠², 刘刚¹

作者信息 +

TRANSIENT OVERVOLTAGE ANALYSIS AND RAPID ESTIMATION OF INTEGRATED ENERGY AC-DC HYBRID TRANSMISSION SYSTEM

Yi Lidong¹, Bai Shibin¹, Zhang Wenchao², Tian Zhihao¹, Liu Shunnan², Liu Gang¹

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文章历史 +

摘要

针对大容量直流和高比例新能源集中接入的交直流送端系统中,由于故障扰动引起的暂态过电压难以快速准确计算导致系统安全稳定运行的问题,提出综合能源交直流混联外送系统暂态过电压分析与快速估算方法。首先,建立风火打捆的送端系统等效模型,考虑储能系统接入后的交直流综合能源的调节特性,对故障后的暂态过电压进行修正。分析故障扰动下风电机组的有功功率和无功功率动态变化特性,给出暂态过电压的计算流程。然后,分析暂态过电压时变参数辨识方法,提出交直流系统暂态过电压快速估计方法。最后,以某地交直流送端系统数据建立仿真模型,仿真结果验证了所提方法在交直流送端系统暂态过电压的计算精度和收敛速度方面具有优越性。

Abstract

Aiming at the problem that the transient overvoltage caused by fault disturbance is difficult to calculate quickly and accurately in the AC-DC transmission terminal system with large capacity DC and high proportion of new energy centralized access, which leads to the safe and stable operation of the system, a method of transient overvoltage analysis and rapid estimation of the integrated energy AC-DC hybrid transmission system is proposed. In this regard, this paper firstly establishes an equivalent model of the sending end system of wind and fire bundling, considering the regulation characteristics of the AC and DC integrated energy after the energy storage system being connected, and corrects the transient overvoltage after the fault. The dynamic change characteristics of active power and reactive power of wind turbines under fault disturbance are analyzed, and the calculation flow of transient overvoltage is given. Then, the time-varying parameter identification method of transient overvoltage is analyzed, and a fast estimation method of transient overvoltage in AC-DC system is proposed. Finally, a simulation model is established based on the data of the AC/DC transmission side system in a certain place. The simulation results verify that the proposed method has superiority in the calculation accuracy and convergence speed of the transient overvoltage of the AC/DC transmission side system.

导出引用

衣立东, 摆世彬, 张文朝, 田志浩, 柳顺楠, 刘刚. 综合能源交直流混联外送系统暂态过电压分析与快速估算[J]. 太阳能学报. 2023, 44(6): 122-129 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0101

Yi Lidong, Bai Shibin, Zhang Wenchao, Tian Zhihao, Liu Shunnan, Liu Gang. TRANSIENT OVERVOLTAGE ANALYSIS AND RAPID ESTIMATION OF INTEGRATED ENERGY AC-DC HYBRID TRANSMISSION SYSTEM[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 122-129 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0101

中图分类号： TM73

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