配电系统状态估计(distribution system state estimation,DSSE)是配电系统监测控制中的重要组成部分。智能电表在配电网络中提供相当精确的测量值,使较高质量的DSSE成为可能,但由于智能电表的数据具有非同步特性,直接用于传统的DSSE算...配电系统状态估计(distribution system state estimation,DSSE)是配电系统监测控制中的重要组成部分。智能电表在配电网络中提供相当精确的测量值,使较高质量的DSSE成为可能,但由于智能电表的数据具有非同步特性,直接用于传统的DSSE算法会导致状态估计精度不高。针对DSSE中智能电表的测量异步问题,提出一种改进DSSE方法,该方法通过历史数据适当调整智能电表测量数据,在不同程度上消除误差因素。仿真结果表明,改进方法提高了DSSE的精度,且能较好处理负荷突变的情况。展开更多
Synchronized distributed measurements of mode parameters create a technical feasibility for development and implementing new technologies of control the mode stability and the admissibility of EPS （electric power sys...Synchronized distributed measurements of mode parameters create a technical feasibility for development and implementing new technologies of control the mode stability and the admissibility of EPS （electric power system） mode. Discussion will focus on different models obtained from data synchronized measurements for operational and automatic emergency control without EPS being totally controlled. According to the proposed technology, the generator＇s output power restrictions are determined in real-time by the terms a static stability using the generators＇ mode model as a multipole with connection nodes of generators＇ electromotive forces （the matrix of SMA （self and mutual admittances） of electromotive forces of generators）. Potential applications of the technology are distribution network with the main substation and generators of commensurable capacity, and transmission network with large power plants （generators） distributed into the network. The one-level control system for all of generators with defining the generator＇s power limits relative to the main substation is implemented in the first case. In the second case, the two-level control system is brought in, based on the separation of large and small generation motion. The results of the method and technology efficiency verification are shown in the paper, by both computer simulations of the power system modes and its physical model.展开更多
文摘配电系统状态估计(distribution system state estimation,DSSE)是配电系统监测控制中的重要组成部分。智能电表在配电网络中提供相当精确的测量值,使较高质量的DSSE成为可能,但由于智能电表的数据具有非同步特性,直接用于传统的DSSE算法会导致状态估计精度不高。针对DSSE中智能电表的测量异步问题,提出一种改进DSSE方法,该方法通过历史数据适当调整智能电表测量数据,在不同程度上消除误差因素。仿真结果表明,改进方法提高了DSSE的精度,且能较好处理负荷突变的情况。
文摘Synchronized distributed measurements of mode parameters create a technical feasibility for development and implementing new technologies of control the mode stability and the admissibility of EPS （electric power system） mode. Discussion will focus on different models obtained from data synchronized measurements for operational and automatic emergency control without EPS being totally controlled. According to the proposed technology, the generator＇s output power restrictions are determined in real-time by the terms a static stability using the generators＇ mode model as a multipole with connection nodes of generators＇ electromotive forces （the matrix of SMA （self and mutual admittances） of electromotive forces of generators）. Potential applications of the technology are distribution network with the main substation and generators of commensurable capacity, and transmission network with large power plants （generators） distributed into the network. The one-level control system for all of generators with defining the generator＇s power limits relative to the main substation is implemented in the first case. In the second case, the two-level control system is brought in, based on the separation of large and small generation motion. The results of the method and technology efficiency verification are shown in the paper, by both computer simulations of the power system modes and its physical model.
