CAJ | 학술논문

建立了暂态电压稳定分析的微分代数方程组,并提出了应对暂态电压稳定问题的自动电压控制(automatic volt-age control, AVC)体系下二级电压紧急控制与切负荷协调控制策略。该协调控制策略把低压切负荷作为与 AVC 体系下二级电压紧急控制并行的一种控制手段,在这种协调控制的过程中优先考虑采用二级电压紧急控制,当计算发现仅依靠二级电压紧急控制不能使系统保持暂态电压稳定的时候再采用切负荷控制。在 PSAT 仿真环境下建立了含 AVC体系下二级电压紧急控制和切负荷控制的电力系统暂态电压稳定仿真模型,对广东电网748节点系统进行仿真,验证了所提出的控制策略和模型的正确性和有效性。
건립료잠태전압은정분석적미분대수방정조,병제출료응대잠태전압은정문제적자동전압공제(automatic volt-age control, AVC)체계하이급전압긴급공제여절부하협조공제책략。해협조공제책략파저압절부하작위여 AVC 체계하이급전압긴급공제병행적일충공제수단,재저충협조공제적과정중우선고필채용이급전압긴급공제,당계산발현부의고이급전압긴급공제불능사계통보지잠태전압은정적시후재채용절부하공제。재 PSAT 방진배경하건립료함 AVC체계하이급전압긴급공제화절부하공제적전력계통잠태전압은정방진모형,대엄동전망748절점계통진행방진,험증료소제출적공제책략화모형적정학성화유효성。
The differential and algebraic equations based power system model are established for analyzing power system transient volt-age stability problem, SVC emergency control based on AVC framework and load shedding coordinate control scheme is presented to solve the transitent voltage stability problem. In the proposed coordinate control scheme. SVC emergency control is priority to be con-sidered. load shedding is be considered when the SVC emergency control cannot keep the system transient voltage stability. Building simulation models of transient voltage stability in power systems including emergency SVC and load shedding coordinate control scheme in PSAT environment. Case studies using Guangdong 748-bus systems validate the proposed control mode and algorithm.