CAJ | 학술논문

静止同步补偿器(static synchronous compensator， STATCOM)具有对无功功率进行独立快速控制和提高电压稳定性的特点。将 STATCOM 接入双馈入直流系统某一逆变站交流母线，建立含STATCOM的双馈入直流系统模型，静止同步补偿器(static synchronous compensator， STATCOM)具有对无功功率进行独立快速控制和提高电压稳定性的特点。将 STATCOM 接入双馈入直流系统某一逆变站交流母线，建立含STATCOM的双馈入直流系统模型，推导了整个系统稳态功率传输的数学模型。通过理论分析和PSCAD/EMTDC 仿真，详细研究短路比、直流落点间的电气距离等因素对双馈入直流系统运行指标的影响。并提出利用最大传输有功功率增加量来分析 STATCOM 对不同短路比时最大传输有功功率的影响。研究表明：STATCOM的接入可以等效的增大直流子系统所馈入交流系统的强度，增大直流子系统的稳定运行区域，改善其换相失败免疫能力，抑制暂态过电压，从而有效改善双馈入直流系统的稳态和暂态运行特性。
정지동보보상기(static synchronous compensator， STATCOM)구유대무공공솔진행독립쾌속공제화제고전압은정성적특점。장 STATCOM 접입쌍궤입직류계통모일역변참교류모선，건립함STATCOM적쌍궤입직류계통모형，정지동보보상기(static synchronous compensator， STATCOM)구유대무공공솔진행독립쾌속공제화제고전압은정성적특점。장 STATCOM 접입쌍궤입직류계통모일역변참교류모선，건립함STATCOM적쌍궤입직류계통모형，추도료정개계통은태공솔전수적수학모형。통과이론분석화PSCAD/EMTDC 방진，상세연구단로비、직류낙점간적전기거리등인소대쌍궤입직류계통운행지표적영향。병제출이용최대전수유공공솔증가량래분석 STATCOM 대불동단로비시최대전수유공공솔적영향。연구표명：STATCOM적접입가이등효적증대직류자계통소궤입교류계통적강도，증대직류자계통적은정운행구역，개선기환상실패면역능력，억제잠태과전압，종이유효개선쌍궤입직류계통적은태화잠태운행특성。
Static synchronous compensator (STATCOM) can control the reactive power independently and improve the voltage stability of power system. The STATCOM was implemented at the inverter side AC busbar of double-infeed HVDC system. The model of double-infeed HVDC system included STATCOM was developed, then the derivation of mathematical model for the steady-state power transmission equations were deduced. By theoretical analysis and simulation in PSCAD/EMTDC, a few factors, included short-circuit ratio (SCR)、electric distance between two HVDC links, were considered to study the system performance. Increase in maximum available power (IMAP) was proposed to analyze the impact of STATCOM on the MAP when the SCR was different. The results show that STATCOM can equivalently increase strength of AC system fed by the DC subsystem, thus increase the stable operation area, improve commutation failure immunity and restrain the transient overvoltage of the DC subsystem, then effectively improve the steady and transient state operation performances of double-infeed HVDC system.