生物质发电机组调速系统涉网功能研究及应用

Research and Application of Gridrelated Functions of Governor System in Biomass Power Generating Unit

摘要:

针对生物质发电机组调速系统的涉网功能安全风险和性能缺陷，提出了一套完整改造方案。方案包括三方面内容：数字电液控制系统由低压透平油纯电调改造为高压抗燃油纯电调；涉网保护-超速保护控制逻辑及定值适应电网要求重新整定；一次调频控制策略按试验导则要求重新设计并与超速保护控制动作相结合。该方案既能满足电网安全稳定运行要求，又能满足电厂安全运行要求，对加强生物质发电机组的涉网安全管理工作有着重要的借鉴和推广意义。

Abstract:

In order to eliminate risks and enhance performance of grid-related functions of the governor system in biomass power generating unit, a complete transformation scheme is proposed. The scheme includes three aspects: firstly, the digital electro hydraulic control system (DEH) is transformed from a low-pressure turbine oil pure electronic regulation to a highpressure fireresistant oil pure electronic regulation; secondly, the grid-related protection over-speed protection control (OPC) logic and settings is reset according to the requirements of power grid, and thirdly, the primary frequency control (PFC) strategy is [JP3]redesigned according to the test guideline and combined with the over-speed protection control (OPC) action logic. The proposed solution not only meets the requirements of the safe and stable operation of power grid, but also meets the requirements of the safe operation of thermal power plants, so that it has important reference values and promotion significance for the grid-related safety management of biomass power plants.