厂网分开对大机组接入系统影响研究

Study on the Impact on Large Machine Set Access System by the Separation of Factory and Power Grid

当电源建设落后于电网建设时,需要利用现有的输电走廊将新投运机组接入系统,其必然会对系统的正常运行产生较大冲击。通过分析大机组并网对系统带来的影响,简述了其对系统稳定水平的影响程度及关键潮流断面输送极限对电厂功率外送的限制,并通过安装切机装置来提高关键潮流断面稳定极限,从而降低了机组的窝出力情况,提高了机组使用效率。

When power source construction lags behind grid construction, the current power transmission corridors have to be utilized to connect new generating sets with the power grid, which may have the big impact on the normal operation of the grid. Through the analysis of the impact on the grid by large generating sets, the paper briefly describes the degree of the impact on system stability and the restriction of power transmission by the key tidal current section, and tries to lift the stability limit of the key tidal current section through the installation of switching devices, thus reducing the decline of power force, and increasing the using efficiency of generating sets.