电网关键断面及安全运行规则自动发现系统设计与工程实现

摘要

The framework of an automatic discovery system for critical flowgates and security operation rules in the power grid is designed.Based on the real-time operation data of the power grid,the system is able to automatically find the critical flowgates adapted to the online operation state of the grid.By using the automatic learning method,the system can find the fine rules of critical flowgates as the security operation knowledge of the grid.The functions of the core modules of the system are described,including online automatic discovery of critical flowgates,online calculation of limit transmission capacity of critical flowgates,online generation of mass simulation samples,feature selection,automatic discovery of security operation rules of the power grid.The online application of the system has been realized in Guangdong power grid.The application effect shows that the system is able to generate the security operation knowledge fast enough and refresh it every 1 5 minutes for online application as required.Meanwhile,the knowledge is capable of not only covering the existing security operation knowledge formulated by experts offline,but also finding new knowledge adapted to the online power grid operation mode,while improving the power grid security and economy.%设计了电网关键断面及安全运行规则自动发现系统的架构，该系统在读取电网实时运行数据的基础上，自动发现适应于电网在线运行状态的关键断面，并利用自动学习方法，在线自动发现关键断面上的精细规则作为电网安全运行知识。阐述了系统中各核心模块的功能，包括关键断面在线自动发现、关键断面极限传输容量在线计算、海量仿真样本在线生成、特征选择、电网安全运行规则自动发现等。所设计的系统在广东实际电网中实现了在线应用，应用效果表明：该系统自动生成电网安全运行知识的速度快，能够满足在线应用每15 min刷新一次的要求；同时，电网安全运行知识不仅能够涵盖已有的运行方式专家制定的离线知识，而且能够发现适应于电网在线运行方式的新知识，使得电网在线运行的安全性与经济性得到提升。