Abstract: With the increasing penetration of distributed photovoltaic generation in distribution networks, the problem of voltage violation is becoming more and more serious, which has led to increasingly complex control of voltage in distribution networks. In response to these issues, this paper proposes an anti-windup PI control strategy, which uses a column type Magnetically Controlled Reactor(MCR) to realize reactive power and voltage comprehensive control, and the algorithm design and system block diagram of the new anti-saturation PI controller are given. Theoretical analysis and experimental results show that the new anti-windup PI controller can effectively reduce the overshoot of the column type MCR control system, greatly improve its dynamic performance, effectively suppress voltage fluctuations, and have good response and robustness to load disturbances.

    Key words: distributed photovoltaic; voltage violation; anti-windup PI controller; column type magnetically controlled reactor