Research Of Grounding In Medium Voltage Power Grid Compensation

This topic in combination with ningbo medium-voltage distribution network, on the basis of actual situation, according to the present, when one-phase ground fault happens, the capacitive current is too large, the system cannot be in two hours without tripping operation problem, based on the research of the capacitive current calculation method and improved, determining the reasonable optimization of the compensation capacity and compensation, and on this basis, gives a detailed research plan. Ningbo area at the same time in order to adapt to the development trend of distribution network, is proposed in the open and close the dispersion compensation and lateral load switching station, as the name implies, this compensation method is put to the large capacitance current compensation divided into small sections and in in addition to the bus, other routes or user side compensation, so as to achieve the goal of combination of dispersion and centralization. Arc suppression coil dispersion compensation capacity and reasonable installation site, including equipment type selection, installation, debugging and evaluation work. Put forward the implementation of distributed compensation on-spot management standard and typical design, provide design and installation for the user access to the project in the future.