CAJ | 학술논문

电力系统低频振荡阻尼控制是目前广域闭环控制的研究热点，其中采用广域反馈信号的电力系统稳定器(PSS)是主要控制方式之一。广域 PSS 的投运条件是运行人员主要关注的问题之一，但目前鲜有相关研究。文中以实际工程应用为背景，提出了广域 PSS 的“退出”“投入”和“激活”3种运行状态及相互转换关系；同时提出了广域PSS的3个激活条件，包括本地功率、爬坡和频率条件，分别对应本地控制机组出力改变、非本地机组出力改变和非低频振荡频率的系统振荡3种特殊系统运行状态，以针对这些特殊状态确定广域PSS是否投运。随后的RTDS硬件在环测试结果表明，激活条件与运行状态切换相结合的广域 PSS 投运条件可有效保证其不起坏作用。广域PSS投运条件的研究及测试结果将为今后采用广域反馈信号的 PSS 在实际工程中的应用提供参考价值。
전력계통저빈진탕조니공제시목전엄역폐배공제적연구열점，기중채용엄역반궤신호적전력계통은정기(PSS)시주요공제방식지일。엄역 PSS 적투운조건시운행인원주요관주적문제지일，단목전선유상관연구。문중이실제공정응용위배경，제출료엄역 PSS 적“퇴출”“투입”화“격활”3충운행상태급상호전환관계；동시제출료엄역PSS적3개격활조건，포괄본지공솔、파파화빈솔조건，분별대응본지공제궤조출력개변、비본지궤조출력개변화비저빈진탕빈솔적계통진탕3충특수계통운행상태，이침대저사특수상태학정엄역PSS시부투운。수후적RTDS경건재배측시결과표명，격활조건여운행상태절환상결합적엄역 PSS 투운조건가유효보증기불기배작용。엄역PSS투운조건적연구급측시결과장위금후채용엄역반궤신호적 PSS 재실제공정중적응용제공삼고개치。
The power system stabilizer (PSS) based on wide area feedback signal is the primary means of damping control for low frequency oscillation of power systems.The operating conditions for wide area PSS,which prevent it from deteriorating stability,are one of the main concerns as its control effect for operators,but little,if any,has been reported on its investigation.With practical engineering applications as the backgrounds,three operating states,quit,operate and activate, and the states transition conditions between these states are presented.Three activation conditions are proposed at the same time,including local active power condition,climbing condition and frequency condition,corresponding to three kinds of special system situations,respectively,which are output changes of local generators,output changes of non-local generators,non-low-frequency oscillation situations.The following hardware in loop test using real time digital simulator (RTDS) shows that the combination of operating states transition and activation conditions can ensure correct operation of wide area PSS effectively. This study and testing results of operating conditions for wide area feedback signal based power system stabilizer is of practical value for wide area PSS application in the future.