高电压技术2013，Vol.39Issue(3)：562-567,6.DOI:10.3969/j.issn.1003-6520.2013.03.008
±800 kV直流输电工程交流滤波器暂态定值计算
Transient Rating Calculation of AC Filters in ±800 kV UHV DC Transmission Project
摘要
Abstract
The converter will produce a large number of harmonics in UHV DC transmission project, which can impact the stability of power system and communication lines. The AC filters can effectively reduce the hazards of harmonics and improve the system reliability, and at the same time compensate the reactive power requirements of the converters. To ensure the safe operation of AC filters in a variety of conditions, it is reasonable and significant to configure the arresters and also to determine the insulation coordination for AC filters. Thus, according to the requirements of +800 kV UHV DC transmission project and the characteristics of AC filter components under the most severe operating conditions, the transient rating of AC filters were calculated. The transient currents, voltages and energies of AC filters components such as capacitances, reactors, resistors and arresters were determined. The insulation level of each component and arrester configuration parameters were also determined, for instance, the lightning tolerance level and switching withstand level of high voltage containers in both rectifier and inverter stations were 1 550 kV and 1 175 kV, respectively. It is concluded that the arrester optimization can reasonably reduce the protection level for each component of the AC filters, including capacitances, reactors and resistors, while meeting the safe operation requirements of AC filter equipment.关键词
特高压直流输电/换流器/交流滤波器/避雷器/暂态定值/过电压Key words
UHV DC transmission/ convenor/ AC filter/ arrester/ transient rating/ overvoltage引用本文复制引用
李璟延,杨一鸣,吴方劼..±800 kV直流输电工程交流滤波器暂态定值计算[J].高电压技术,2013,39(3):562-567,6.基金项目
国家电网公司科技项目(SGCC[2008]86). （SGCC[2008]86）
