直流逆变端扰动对整流端影响机制及应对措施

发布时间：2018-03-15 02:05

  本文选题：高压直流输电　切入点：逆变站　出处：《中国电机工程学报》2016年07期 　论文类型：期刊论文

【摘要】：特高压直流大容量送电使交直流相互作用程度加剧,直流传播逆变端交流电网扰动及其对整流端电网的影响,已不容忽视。该文首先建立了直流异步联网测试系统;研究了逆变端交流电压慢速起伏波动,以及快速跌落与恢复两种动态过程中,换流器触发角以及直流电流的暂态响应轨迹,揭示了直流传播逆变端扰动的机制;研究了整流站受扰功率响应特性,以及交流电网强度、直流控制参数等因素对其影响。在此基础上,针对哈密—郑州?800 kV/8 000 MW特高压直流输电工程中,逆变端故障引发整流端过电压冲击威胁,提出了加强电网结构和优化网源稳态无功配置的缓解措施,仿真结果验证了措施的有效性。
[Abstract]:AC-DC interaction is aggravated by UHV DC power transmission with large capacity. The disturbance of DC transmission inverter and its influence on rectifier network can not be ignored. Firstly, a DC asynchronous network testing system is established in this paper. In this paper, the transient response trajectories of converter trigger angle and DC current in the two dynamic processes of AC voltage fluctuation, fast drop and recovery are studied, and the mechanism of DC propagation inverter disturbance is revealed. The characteristics of disturbed power response of rectifier station, as well as the influence of AC power grid strength and DC control parameters on the power response of rectifier station are studied. In the 800 kV/8 #number0# MW UHV HVDC project, the inverter terminal fault causes the overvoltage impulse threat at the rectifier end. The mitigation measures to strengthen the power network structure and optimize the steady-state reactive power configuration of the network source are put forward. The simulation results verify the effectiveness of the measures.
【作者单位】： 中国电力科学研究院;
【基金】：国网公司科技项目资助(XT71-14-040) 国家自然科学基金项目(51207143) 国家863高技术基金项目(2011AA05A119)~~
【分类号】：TM721.1
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本文编号：1613924