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This paper aims at the present difficulties to regulate the frequency difference and voltage difference automatically when doing power grid parallel operation in substation, and applies the back-to-back voltage source converter to the power grid synchronization parallel based on the theory of active power frequency and reactive power voltage in power system. The core of the power grid synchronization...
This paper introduces the application of back-to-back converter in the power grid synchronization parallel. After converter devices finish the function of power grid parallel and quit running, it may realize many functions besides the power grid parallel by adopting different control strategies to the controllers, such as raising voltage from zero experiments on transmission line in substations, raising...
A multi-functional system is proposed in this paper, which adopts high power controllable turn-off power transistors as the core of its converter and adopts the technology of sine pulse width modulation (SPWM) to control the opening and closing of them. It can be used for rapid automatic power grid synchronization, ring net parallel operation, voltage boosting, current boosting , and other functions...
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