中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2014年
34期
6199-6208
,共10页
多机电力系统%广义Hamilton系统%广域阻尼控制%时滞%广域测量系统
多機電力繫統%廣義Hamilton繫統%廣域阻尼控製%時滯%廣域測量繫統
다궤전력계통%엄의Hamilton계통%엄역조니공제%시체%엄역측량계통
multi-machine power system%generalized Hamilton system%wide-area damping control%time-delay%wide-area measurement system (WAMS)
随着跨区送电量的需求增加，大量功率需要进行远距离传输，因而抑制区域间的功率振荡仅靠局部反馈信号设计的控制器已难以保证整个系统的稳定运行。因此，含有时滞影响的广域控制器的分析和设计是近年来互联电网研究的热点之一。基于Hamilton系统理论，建立对应的广域测量电力系统的非线性时滞广义Hamilton模型，并以此模型为基础，给出相应的 Lyapunov-Krasovskii 泛函并推导出以矩阵不等式为形式的时滞依赖稳定性判据，注意到控制输入含有时滞信号的影响，设计出相应的广域阻尼控制器(wide-area damping controller，WADC)，实现了含有时滞的广域反馈控制，并计算出能使闭环电力系统稳定的时滞裕度，权衡WADC的阻尼性能与时滞裕度之间的关系，从而给出对应的WADC控制参数。最后以16机68节点系统为例，用时域仿真的结果来说明所提时滞控制方法的有效性。
隨著跨區送電量的需求增加，大量功率需要進行遠距離傳輸，因而抑製區域間的功率振盪僅靠跼部反饋信號設計的控製器已難以保證整箇繫統的穩定運行。因此，含有時滯影響的廣域控製器的分析和設計是近年來互聯電網研究的熱點之一。基于Hamilton繫統理論，建立對應的廣域測量電力繫統的非線性時滯廣義Hamilton模型，併以此模型為基礎，給齣相應的 Lyapunov-Krasovskii 汎函併推導齣以矩陣不等式為形式的時滯依賴穩定性判據，註意到控製輸入含有時滯信號的影響，設計齣相應的廣域阻尼控製器(wide-area damping controller，WADC)，實現瞭含有時滯的廣域反饋控製，併計算齣能使閉環電力繫統穩定的時滯裕度，權衡WADC的阻尼性能與時滯裕度之間的關繫，從而給齣對應的WADC控製參數。最後以16機68節點繫統為例，用時域倣真的結果來說明所提時滯控製方法的有效性。
수착과구송전량적수구증가，대량공솔수요진행원거리전수，인이억제구역간적공솔진탕부고국부반궤신호설계적공제기이난이보증정개계통적은정운행。인차，함유시체영향적엄역공제기적분석화설계시근년래호련전망연구적열점지일。기우Hamilton계통이론，건립대응적엄역측량전력계통적비선성시체엄의Hamilton모형，병이차모형위기출，급출상응적 Lyapunov-Krasovskii 범함병추도출이구진불등식위형식적시체의뢰은정성판거，주의도공제수입함유시체신호적영향，설계출상응적엄역조니공제기(wide-area damping controller，WADC)，실현료함유시체적엄역반궤공제，병계산출능사폐배전력계통은정적시체유도，권형WADC적조니성능여시체유도지간적관계，종이급출대응적WADC공제삼수。최후이16궤68절점계통위례，용시역방진적결과래설명소제시체공제방법적유효성。
Large amount of power is required for long-distance transmission with the increase of cross-transmission of electricity demand, thus it is difficult to inhibit the power oscillation between the regions to guarantee the stable operation of the whole power system which only relies on local feedback signal designed controller. Therefore, it is one of the hot spots for the analysis and design with time delay influence of wide-area controller in recent study of interconnected grid. Based on Hamilton system theory, a nonlinear time-delay generalized Hamiltonian model of corresponding wide area measurement power system model was constructed. Based on the proposed model, the corresponding Lyapunov-Krasovskii functional was given to derive a delay-dependent steady stability criterion in term of matrix inequalities. It was noticed that control input contains the influence of time-delay signal;the corresponding wide-area damping controller (WADC) was designed. The WAN feedback control with time-delay was realized;Time delay margin delay can be calculated which makes closed loop power system is stable. The relationship between the damping performance of WADC and the time delay margin was investigated. Thus corresponding control parameters of WADC were given. Finally, taking a 16-machine 68-bus power system as an example, the results of simulation in time-domain show that performance of the proposed controller is effective.
