CAJ | 학술논문

针对能量函数法无法分析系统的时变状态矩阵与稳定性之间的关系，提出一种基于时变状态矩阵的故障电力系统稳定性分析方法。首先，通过系统在故障消失点的状态及运行方式，逐步计算系统在故障后各运行点的状态及状态矩阵。然后求取差分方程的解，并根据时变系统稳定性判据，判定故障后系统能否渐进稳定。最后，2机系统和16机系统仿真算例表明，该方法能够准确判断系统在不同故障位置及故障持续时间等情况下系统的稳定性。
침대능량함수법무법분석계통적시변상태구진여은정성지간적관계，제출일충기우시변상태구진적고장전력계통은정성분석방법。수선，통과계통재고장소실점적상태급운행방식，축보계산계통재고장후각운행점적상태급상태구진。연후구취차분방정적해，병근거시변계통은정성판거，판정고장후계통능부점진은정。최후，2궤계통화16궤계통방진산례표명，해방법능구준학판단계통재불동고장위치급고장지속시간등정황하계통적은정성。
A-novel-method-is-proposed-to-analyze-the-stability-of-fault-power-system-based-on-time-varying-state-matrix,-since-the-energy-function-method-cannot-analyze-the-relationship-between-the-time-varying-state-matrix-and-the-system-stability.-First,-through-the-state-and-operation-mode-of-the-system-at-the-failure-vanishing-point,-the-real-time-state-matrix-after-the-fault-is-calculated-gradually.-Then,-the-solution-of-the-differential-equation-is-calculated,-and-the-stability-of-the-fault-system-can-be-judged-based-on-the-stability-criterion-of-the-time-varying-system.-Finally,-simulation-results-of-the-equivalent-two-generator-and-sixteen-generator-system-illustrate-that-the-method-can-accurately-analyze-the-stability-of-the-system-when-the-fault-occurs-at-different-position-and-with-different-duration-time.