Nuclear power ship medium-voltage power system

Abstract

The invention provides a nuclear power ship medium-voltage power system which comprises a generator, a secondary circuit and platform medium-voltage bus, a primary circuit medium-voltage bus, an arc light acquiring device and an arc light protection device, wherein a first arc light sensor, a second arc light sensor and a third arc light sensor are all used for acquiring arc light signals, and transmitting the arc light signals to the arc light acquiring device; the arc light acquiring device is configured to send the arc light signal data to the arc light protection device; a first current transformer is used for acquiring the incoming line current and transmitting the same to the arc light protection device; and the arc light protection device is configured to perform logic operations onthe arc signal data and the incoming line current, and send corresponding control signals to a first switch and / or a third switch according to the results of the logic operations. The nuclear power ship medium-voltage power system acquires a fault light signal through the arc light sensors, performs logic operations on the fault light signal and the incoming line current, cuts off the fault line,and solves the problem that the system in the prior art affects the system stability and has high cost.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a nuclear power ship medium voltage power system. Background technique [0002] In the power system of nuclear power ships, there are several common solutions for power system protection. One way is to use time-limited current protection as the main busbar protection. When the busbar accessories fail, there is a certain delay in the protection action. For the fault When the current is relatively large, it may have a serious impact on the stability of the equipment and the system; another way is that because the generators are often connected in parallel and disconnected in the ship power system, the grid structure will change greatly with different working conditions. It is necessary to ensure that a one-day resonant grounding device is used in each electrical island to protect the system from overvoltage damage. The resonant grounding device puts forward higher requirement...

AI Technical Summary

Problems solved by technology

[0002] In the power system of nuclear power ships, there are several common solutions for power system protection. One way is to use time-limited current protection as the main busbar protection. When the busbar accessories fail, there is a certain delay in the protection action. For the fault When the current is relatively large, it may have a serious impact on the stability of the equipment and the system; another way is that because the generators are often connected in parallel and disconnected in the ship power system, the grid structure will change greatly with different working conditions. It is necessary to ensure that a one-day resonant grounding device is used in each electrical island to protect the system from overvoltage damage. The resonant grounding device puts forward higher requirements on the space and cost of the ship's power station. Communication, to avoid conflicts in capacitance measurement and parameter setting, etc., it is necessary to configure reliable communication methods and channels, and the harmonic influence of ship equipment is also inevitable for communication devices

Images