A distributed overvoltage protection system for a mobile photovoltaic power plant low voltage ride through test device
A low-voltage ride-through and photovoltaic power plant technology, which is applied in the direction of emergency protection circuit devices, circuit devices, emergency protection circuit devices, etc. for limiting overcurrent/overvoltage, and can solve the problems of grid voltage and frequency fluctuations, power outage accidents, power grid Fault deterioration and other problems to achieve the effect of eliminating overvoltage and preventing overvoltage damage
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[0025] Embodiment The design of the overvoltage protection system is carried out for the low voltage ride through test device of the 35kV-1.5MW photovoltaic power station, and the configuration electrical positions of all arrester protection systems are as follows Figure 4 shown. The specific design and configuration are as follows:
[0026] 1. Lightning protection system for incoming and outgoing lines of the system
[0027] The whole low-voltage ride-through test device is mainly composed of a current-limiting reactor, a short-circuit reactor and a switch cabinet. The single-line diagram of the primary electrical system is shown in figure 1 shown. The lightning protection system for incoming and outgoing lines of the system mainly includes two parts: the system incoming lightning arrester group F1 and the system outgoing lightning arrester group F2. figure 2 shown. The two sets of arrester groups are assembled and combined with multiple single arresters to realize the ...
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