CAJ | 학술논문

移相器(也称相角调节器)作为一种控制输电潮流的有效手段，目前在国外超高压电网中已得到广泛应用。我国尚未采用移相器技术，对其电磁暂态问题的研究也鲜见报道。本文提出采用晶闸管分级投切方式的特高压静止移相器的设计方案，使用 EMTP 电磁暂态仿真工具，以典型电网为例分析了移相器对特高压线路稳态运行电压、工频过电压及操作过电压等问题的影响。结果表明，特高压线路装设移相器后，线路末端稳态运行电压与不装设移相器相比有小幅升高。特高压移相器的合闸、分闸及移相器所在线路的单相重合闸操作过电压均在标准允许范围内。研究结果可为今后开展超/特高压电网移相器应用研究提供借鉴。
이상기(야칭상각조절기)작위일충공제수전조류적유효수단，목전재국외초고압전망중이득도엄범응용。아국상미채용이상기기술，대기전자잠태문제적연구야선견보도。본문제출채용정갑관분급투절방식적특고압정지이상기적설계방안，사용 EMTP 전자잠태방진공구，이전형전망위례분석료이상기대특고압선로은태운행전압、공빈과전압급조작과전압등문제적영향。결과표명，특고압선로장설이상기후，선로말단은태운행전압여불장설이상기상비유소폭승고。특고압이상기적합갑、분갑급이상기소재선로적단상중합갑조작과전압균재표준윤허범위내。연구결과가위금후개전초/특고압전망이상기응용연구제공차감。
As one of effective measure to control power flow during power transmission, phase shift transformers (PST), which is also known as phase angle regulators (PAR), are widely applied in UHV power transmission grid abroad. Up to now the static phase shifter (SPS) technique has not been adopted in China and the result of the research on electromagnetic transient of SPS is seldom reported. A design scheme of UHV SPS, in which the thyristor-controlled step-by-step switching is adopted, is proposed. Using electro-magnetic transient simulator (EMTP) and taking typical power grid as example, the impacts of SPS on steady state operating voltage, power frequency overvoltage and switching overvoltage of UHV transmission line are analyzed. Analysis results show that after the installation of SPS the steady state operating voltage at the end of UHV transmission line rises slightly than without installation of SPS. The switching overvoltages caused by switching in/off UHV SPS as well as that caused by single-phase reclosure of transmission line, in which the UHV SPS is installed, are all within the allowed range specified by the standard.