Submarine cable electrical simulation device for submarine observation network

Abstract

The invention relates to the technical field of undersea observation networks, in particular to a submarine cable electrical simulation device for a submarine observation network, which is used for simulating the structure and function of an undersea observation network submarine cable. The device comprises a high-voltage input interface, a plurality of distributed submarine cable simulation units, a plurality of branch units and a plurality of ground fault simulation units which are sequentially connected in series. The high-voltage input interface is used for receiving a high-voltage power supply provided by a shore base station; the distributed submarine cable simulation unit is used for simulating submarine cable electrical distribution parameters in unit length. The branch units are connected with the main base station and are used for providing electric energy for the main base station and carrying out fault isolation on the main base station; and the grounding fault simulation unit is used for simulating a submarine cable grounding short-circuit fault at any position.

Description

technical field [0001] The invention belongs to the technical field of seabed observation network, in particular to a seabed observation network submarine cable electrical simulation device. Background technique [0002] The submarine observation network consists of shore base stations, backbone submarine cables, main base stations and scientific observation instruments. The high-voltage power supply on the shore base station supplies power to the underwater main base station through the backbone submarine cable. The main base station converts the high-voltage power into electrical energy and provides it to the scientific observation instruments on the underwater platform to make it work normally. [0003] The laying depth of submarine cables can reach thousands of meters, and the laying length can reach thousands of kilometers, which leads to great difficulty in construction and high maintenance costs. Perform system joint debugging. However, due to the limitation of land...

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Problems solved by technology

[0004] At present, the existing submarine cable onshore test methods and devices cannot meet the electrical performance requirements of the submarine cable electrical simulation device, which has the following problems and deficiencies:

[0005] 1. The existing methods and devices do not fully consider the distribution characteristics of the electrical parameters of long-distance submarine cables. Most of them adopt the lumped model design of submarine cable parameters, and do not fully consider the distribution parameters. Therefore, it is impossible to simulate the long-distance remote power supply of real submarine cables. Actual working status

[0006] 2. The existing methods and devices do not consider the fault simulation function of the submarine cable electrical simulation device, and cannot adjust the dynamic parameters when the submarine cable electrical simulation device is short-circuited with seawater

Ground fault simulation is an important method to verify the stability and reliability design of the submarine observation network system. Without this function, it is impossible to test and optimize the system fault protection, nor can it fully simulate the actual operation

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