新一代大容量调相机在电网中的应用研究

发布时间：2018-03-19 00:17

本文选题：调相机　切入点：特高压直流　出处：《电网技术》2017年01期 　论文类型：期刊论文

【摘要】：研究了新一代调相机在我国特高压直流送受端的应用。首先结合直流对于调相机的技术需求,研究了调相机模型,提出基于不同时间尺度的次暂态、暂态、稳态3种运行特性。然后,基于酒泉—湖南直流风火打捆送端,从增加系统短路比、降低新能源高压脱网风险、抑制稳态过电压等角度研究了调相机在特高压直流送端的应用效果;基于华东多直流馈入受端电网,从提高直流多馈入短路比、降低多回直流同时换相失败的风险、提升严重故障下的系统电压稳定水平等角度研究了调相机在特高压直流受端电网的应用效果。最后,从设备角度提出新一代调相机在运行维护、无功响应特性等方面相较于传统调相机的技术优势,旨在为调相机后续投入工程运行提供技术支撑。
[Abstract]:In this paper, the application of a new generation of adjustable camera in UHV DC receiver in China is studied. Firstly, considering the technical requirements of DC camera, the model of adjustable camera is studied, and the subtransient and transient based on different time scales are proposed. Then, based on Jiuquan-Hunan DC wind and fire bundles, the system short-circuit ratio is increased to reduce the risk of new energy high-voltage decoupling. The application effect of adjustable camera in UHV DC terminal is studied from the angle of suppressing steady state overvoltage. Based on the multi-DC feed into receiving terminal power network in East China, the risk of multi-DC commutation failure is reduced by increasing the DC multi-feed short-circuit ratio and reducing the risk of multi-DC commutation failure at the same time. The application effect of the adjustable camera in UHV DC receiving power network is studied from the angle of raising the voltage stability level of the system under serious fault. Finally, from the point of view of equipment, the paper puts forward a new generation of adjustable camera in operation and maintenance. Compared with the traditional adjustable camera, the reactive power response characteristics are more advantageous to provide technical support for the subsequent project operation of the adjustable camera.
【作者单位】：中国电力科学研究院;清华大学电机工程与应用电子技术系;
【基金】：国家电网公司科技项目(XT71-15-026)~~
【分类号】：TM761.12

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