For the issue of the voltage overshoot and even collapse likely due to uncertainty of new energy of high proportion of new energy system,the coordinated voltage control strategy of energy storage and reactive power compensation device is proposed.Firstly,the transient voltage stability margin index based on multi-binary table is used to quantify the voltage stability margin of each voltage monitoring node of the system after disturbance,and the stability margin threshold is set to discriminate the voltage stability risk nodes;Then,the reactive power compensation device selection method considering the drain effect,the node voltage sensitivity-based energy storage plant selection method and the emergency regulator selection method taking into account the reactive power response speed are adopted respectively to select the equipment participating the voltage regulation;After that,the economic and emergency coordination and voltage regulation module which matches the two type of nodes is set up with the minimum coordination voltage regulation cost and maximum transient voltage stability margin as the target;Finally,a simulation example based on the improved 10-machine 39-node power system is designed to verify the effectiveness of the proposed voltage regulation strategy in enhancing the transient voltage.
关键词
新能源高占比系统/储能/协调调压/电压稳定裕度
Key words
high proportion system of new energy/energy storage/coordinated voltage regulation/voltage stability margin
维普
万方数据