电厂黑启动方案及其系统试验

电网全部或部分因故障停运后,采用黑启动方案,通过系统中具有自启动能力的机组带动无自启动能力的机组,可实现整个电网的恢复。介绍了贵州引子渡电厂黑启动方案的理论依据和实施过程。对恢复方式中可能出现的过电压、自励磁等问题进行了分析计算,同时介绍了黑启动过程中为确保黑启动顺利完成应注意的有关负荷调整、频率电压控制、继电保护配合等重要问题,并给出了引子渡电厂黑启动方案具体实施的4个具体步骤:试验方式调整、电厂自带厂用电、地区网恢复部分负荷、电网完整性恢复。描述了该电厂2005年的具体试验过程及实时运行状况。试验结果表明,该方案具有可操作性,可作为系统全停后快速启动的一种应急预案。

Power plant black-start scheme and its experiment

Under the condition of total or partial power net breakdown,system recovery can be realized by black-start scheme,in which units with self-start ability are used to bring others to start up.The principle of Yinzidu power plant black-start scheme and its implementation are introduced,and the analysis and calculation of self-excitation and over-voltage during power system recovery are put forward.Some important points about load adjustment,frequency / voltage control and protection configuration,that ensure the success of black-start,are also presented.Four detailed implementation steps are:power network operation mode adjustment,self-provided auxiliary power system startup,partial load restoration and whole power network restoration.Procedures and actual operation conditions of the black-start experiment in 2005 are described.The success of Yinzidu power plant black-start experiment validates the practicability of the emergency startup scheme.