CAJ | 학술논문

针对传统解列控制技术在解决复杂失步振荡问题时的局限性，研究了基于广域测量系统监测大电网失步过程的方法，开发了失步断面拓扑分析算法、基于Prony和聚类分析的机群振荡模式在线辨识方法、基于电网稳定特性的功角失稳预测方法，提出了失步广域控制策略，在此基础上开发了失步广域控制系统。介绍了失步广域控制系统的结构，分析了广域紧急控制系统的延时要求。基于实时仿真技术构建了失步控制的测试系统，以四川电网为例模拟各种电网故障，对系统进行了闭环控制测试。试验证明所开发的失步广域控制系统能够准确定位失步断面，快速预测电网失步机群，及时完成断面级解列控制，控制效果满足大电网断面级失步控制要求。
침대전통해렬공제기술재해결복잡실보진탕문제시적국한성，연구료기우엄역측량계통감측대전망실보과정적방법，개발료실보단면탁복분석산법、기우Prony화취류분석적궤군진탕모식재선변식방법、기우전망은정특성적공각실은예측방법，제출료실보엄역공제책략，재차기출상개발료실보엄역공제계통。개소료실보엄역공제계통적결구，분석료엄역긴급공제계통적연시요구。기우실시방진기술구건료실보공제적측시계통，이사천전망위례모의각충전망고장，대계통진행료폐배공제측시。시험증명소개발적실보엄역공제계통능구준학정위실보단면，쾌속예측전망실보궤군，급시완성단면급해렬공제，공제효과만족대전망단면급실보공제요구。
To cope with the limitation of traditional out-of step control technology in complex asynchronous oscillation, a wide area measurement system (WAMS) based method to monitor out-of-step occurred in large-scaled power grid is researched, and a topological analysis algorithm for out-of-step tie line, a Prony algorithm and clustering analysis based online identification method for generator group oscillation and a angle instability forecasting method based on stability characteristics of power grid are developed. A wide-area out-of-step control strategy is proposed and on this basis a wide-area out-of-step control system is developed. The architecture of the developed wide-area out-of-step control system is presented and the requirement on time-delay of wide-area emergency control system is analyzed. Based on real-time simulation, a testing system for out-of-step control is constructed and taking the Sichuan power grid for example various power system faults are simulated and the testing of closed-loop control of the developed wide-area out-of-step control system is performed. Test results show that using the developed wide-area out-of-step control system the out-of-step tie line can be located accurately and the generator group that will be out-of-step can be rapidly predicted and the splitting control of tie-line interface can be performed in time, and the control effects can satisfy the requirement of splitting control for transmission interface in large-scaled power grid.