direct power
3.In view of the fact that active power and reactive power have coupling relation,the paper deduces the power control mathematical model of three-phase boost type PWM rectifiers based on the mathematical model of rectifier in synchronous dq coordinates and proposes a new direct power control(DPC) strategy of three phase boost type PWM rectifiers based on power feedforward decoupling,and the independent control of active power and reactive power are obtained.
4.Analysis the point of meeting summer peaks in Region Power Gird from load develop、power gird build、 power operate and manage, some suggestions are put forward such as that should analys load integrate economy and society programming ,direct power gird build and power operate and manage,and expatiate the connection of three factors, integrate some means in quanzhou region these years, put foreard some idiographic measures.
