The Research on Automatic Restoration System in Electric Power System Failure

电力的稳定供应是支撑当今社会活动的基础，电力系统的各个组成部门都采取了许多措施来稳定维护供电的可靠性。但是，大范围停电是自然灾害或人为灾害造成的，即使在今天的报纸上也有报道，因此有相当长的恢复时间。在本研究中，为了克服这种情况，通过支持电力系统操作员的事故恢复，对快速恢复的实用系统进行了以下项目的研究。对实际应用中30秒左右有效确定最优目标网络配置的方法进行了检验，即设计目标值。构建了通过设置各种条件对方案进行评价的系统。首先，根据(1)项的数学规划，提出了三种方法。即利用混合整数规划（MIP）确定目标构型的方法；采用线性规划与MIP相结合的方法；然后，提出了电力系统运营商在“恢复性运营成本”下的策略引入方法。即使采用数学规划，最终方法也可能使目标网络配置的设计目标值30秒几乎被清除。从上述结果来看，似乎获得了利用数学规划进行修复操作的实际应用的可能性。其次，基于(2)项目开发了基于OSF/Motif的电力系统恢复系统。本系统具有“电力系统模型准备”、“屏幕显示”、“停电识别”、“系统分析”、“目标网配置准备”、“恢复程序准备”六大功能。

The stable supply of electric power makes the basis which supports present society activity, and many measures are done in the each department which constitutes electric power system for the stable maintenance of the supply reliability. However, the wide power cut is generated by natural or man-made disaster as reported even in today in the newspaper, and has the considerable time for the restoration. In this study, by supporting accident restoration of the power system operator in order to overcome such situation, following items were studied on the practical system for the quick restoration.1. The examination on the method for efficiently determining optimum target network configuration in about 30 seconds, which are the design objective value in the practical use, is carried out.2. The system which can evaluate the proposal method by the setting of various condition is constructed.To begin with, three methods were proposed based on the mathematical programming for the item on superscription (1). That is to say, determination method of target configuration using Mixed Integer Programming (MIP) ; the method by the combined use of Linear Programming and MIP ; the method for introduction then, the strategy of power system operator at "restorative operation cost", was proposed. It became possible that 30 seconds which are the design objective value of the preparation of target network configuration were almost cleared with the final method, even if the mathematical programming is applied. From the above result, it seemed to obtain the possibility of the practical application of restorative operation using mathematical programming.Next, power system restoration system using OSF/Motif was developed on the item on (2). This system has six functions of "power system model preparation", "screen display", "power cut identification", "system analysis", "target network configuration preparation", and "restoration procedure preparation".