南方电网无功电压运行特性的分析与探讨

介绍了电压失稳的主要形式;根据南方电网无功电压的运行情况,分析电网无功电压的薄弱区域。提出优化无功潮流、提高电网电压稳定性的4种有效措施(如合理规划网架和安排运行方式、合理配置无功补偿设备、制定无功优化控制措施和合理配置电网低压减载装置)。文章指出,为满足电网无功按电压分层分区合理分配,提高系统电压质量,南方电网必须抓紧开展无功优化的研究工作,建立电网电压稳定性分析模型,优化电网无功补偿配置方案和电压调整控制策略,不采用自动电压调整装置。

Analysis and Discussion on Operating Characteristics of Reactive Power and Voltage in Southern Power Grid

According to the operation condition of reactive power and voltage in Southern Power Grid, the major form of voltage un-stability was introduced, and the weak area of reactive power and voltage in power grid was analyzed. The 4 kinds of effective measures for optimizing reactive power flow and improving voltage stability were put forward, such as planning power grid frame and arranging operation mode reasonably, reasonable disposition of reactive power compensation equipment, establishing optimal control measures of reactive power, and reasonable disposition of load shedding in low voltage. It is pointed out that to satisfy the reasonable distribution of reactive power and improving power system voltage quality, Southern Power Grid must firmly grasp the research work of reactive power optimization, establish the voltage stability analysis model of power grid, optimize reactive power compensation scheme and voltage control strategy, and adopt automatic voltage regulator.