The problem of voltage exceeding specified limits may occur when the photovoltaic is connected to the distribution network. The active power regulation ability of Energy Storage (ES) and the reactive power regulation ability of grid-connected photovoltaic inverter can provide support of active power and reactive power for distribution network to solve the problem of voltage exceeding specified limits and improve the penetration of photovoltaic. A strategy of actively controlling the output power for photovoltaic-storage system based on extended PQ-QV-PV node is proposed by analyzing the voltage regulating mechanism of Point of Common Coupling (PCC) of photovoltaic with energy storage by controlling photovoltaic inverter and energy storage when PV output fluctuates. The strategy firstly sets a small wave range of voltage to every photovoltaic, then according to the proposed active control strategy coverts the types of PV grid-connected nodes among PQ, QV, and PV successively based on voltage level of grid-connected node, thereby controls the grid-connected level into a smaller range considering power loss decrease. The simulation results indicate that the proposed method can solve the problem of voltage exceeding specified limits when photovoltaic is connected to electric distribution network. This work is supported by National Natural Science Foundation of China (No. 51377060).