Currently, the distributed power inverter faced with two restricts. The first one is high cost. The government takes the measure of FIT and increase the tariff. Although the supporting policy is not completive perfect, generally speaking, the PV power inverter construction has taken an important step and obtained obvious effect. Company investments and positives of PV power have been mobilized.
The other one is the limits in terms of the regulation management of the power system. Power system is built considering of the big power management. Current is one-way flow from power plant to user. Therefore, it is not appropriate to build large amount distributed power management. And lack of the law system of distributed inverter mains is also the important reason to develop distributed power.