直流送端电网二三道防线集成监视及分级预警

从保障特高压交直流重要送端的宁夏电网安全稳定的实际需求出发,提出了直流送端电网二三道防线集成监视及分级预警功能的总体框架。阐述了实现该功能的策略结构化建模、控制措施冲突检测、当值策略可实施性评估和分级预警等关键技术。介绍了该功能在宁夏电网的工程实践应用情况。试运行结果表明,该功能能够根据二三道防线策略模型及控制措施冲突检测情况,对当值策略进行可实施性评估和在线校核,为调度运行人员提供分级预警信息,可及时发现电网运行中存在的安全隐患和潜在风险,保障电网安全稳定运行。

Integrated Monitoring and Graded Early Warning for the Second and Third Defense Line in the DC Sending Power Grid

Based on the actual needs to ensure the security and stability Ningxia provincial power grid, which is an important ultra-high voltage AC/DC sending power grid,this paper designs a general framework for integrated monitoring and graded early warning of the second and third defense line in the DC sending power grid. The paper elaborates some key technologies for realizing the function, such as structured modeling of the strategy, conflict detection for control measures,practicability assessment for the on-duty strategy and graded early warning,and introduces the application of the function in the Ningxia Power Grid. The trial operation result shows that this function can facilitate practicability assessment and on-line check for the on-duty strategy based on the second and third defensive line strategies and conflict detection for control measures and thus provide graded early warning for dispatching staffs so that the potential safety hazards and hidden risks existing in the operation of the power grid can be found out in time.