SBIR Phase I: Optimizing Generator Reactive Power Resources

这个小型企业创新研究（SBIR）第一阶段项目解决了一个主要的辅助服务，即优化发电机无功功率，以支持系统电压分布。 发电机的额定无功功率取决于其磁场、定子和端铁发热极限。它们的工作范围还受到发电机终端、电厂辅助电动机、系统总线和发电机保护和控制系统的最大/最小电压限制的限制。 这些电压限值与直接连接到发电机的变压器上的分接头位置相关。 其目的是将最优潮流模型与发电机无功容量模型相结合，用于发电机Transformer分接头的优化选择。 预计该研究将产生一种分析工具，帮助行业实现所需的滞后/超前无功功率，以支持系统电压曲线。 拟议的研究导致发展的潮流程序，将包括实际发电机无功能力的限制。 这样的模型将确定最佳抽头设置，以允许在大功率块的传输期间增加无功功率的供应，以及在轻负载条件期间增加无功功率的吸收，两者都支持系统电压分布。

This Small Business Innovation Research (SBIR) Phase I project addresses a major ancillary service, that of optimizing generator reactive power in support of system voltage profile. The rated reactive power of generators are based on their field, stator, and end-iron heating limits. Their operating ranges are further limited by the max/min voltage limits of generator terminal, plant auxiliary motors, the system bus, and generator's protective and control systems. These voltage limits are interrelated by the tap positions on the transformers directly connected to the generator. The objective is to integrate an optimal power flow model with the generator reactive capability model for optimal selections of generator transformer taps. It is anticipated that the research would result in an analytical tool which would help the industry achieve the desired lag/lead reactive powers in support of system voltage profile. The proposed research leads to development of a power flow program that would include the actual generator reactive capability limits. Such a model would determine optimal tap settings to allow an increased supply of reactive power during transfer of large blocks of power and an increased absorption of reactive power during light-load condition, both in support of system voltage profile.