SVG cooling and waste heat utilization system

Abstract

The invention discloses a SVG cooling and waste heat utilization system. The system comprises a SVG chamber, a heat exchange air cabinet, a refrigeration group machine and a water supply unit. The heat exchange air cabinet is provided with an air-delivery air channel and an air return air channel. An air inlet and an air outlet of the SVG chamber are connected to the air-delivery air channel and the air return air channel respectively. An evaporation side of the refrigeration group machine is connected to the heat exchange air cabinet. A condensation side of the refrigeration group machine is connected to the water supply unit. The water supply unit is provided with a hot water pipeline and a cold water pipeline. The hot water pipeline and the cold water pipeline are connected to a hot end and a cold end of the refrigeration group machine respectively. The system generates sanitary hot water through using waste heat generated during SVG refrigeration. And the system possesses advantages that heat dissipation efficiency is high; an adaptation capability is good; and reliability and economic benefits are high.

Description

technical field [0001] The invention mainly relates to the field of electrical engineering, in particular to an SVG cooling and waste heat utilization system. Background technique [0002] With the rapid development of new energy power generation and UHV transmission technology, the demand for large-capacity dynamic reactive power compensation equipment in the power grid is becoming increasingly urgent. Among all kinds of equipment capable of quickly providing dynamic reactive power compensation, Static Synchronous Generator (SVG) has attracted widespread attention because of its fast dynamic response and small grid-connected harmonics. [0003] During the operation of SVG, due to the certain conduction voltage drop of the semiconductor switching device itself, about 1% of the active power loss will be generated during the operation of the SVG. Only by cooling the heat dissipation system can the SVG be overheated and damaged. [0004] At present, small and medium-capacity ...

AI Technical Summary

Problems solved by technology

However, increasing the air volume will lead to loud system noise and adverse effects on the environment and other related issues; while reducing the SVG indoor air intake temperature means additional air conditioning units with sufficient cooling capacity will be required, which will significantly increase the operating cost of the cooling system

According to calculations, if a 100Mvar SVG device uses an air-conditioning unit for cooling and heat dissipation, the daily operating power consumption of the air-conditioning system will be about 5,000 kWh, and the annual operating electricity cost will be more than 1 million yuan. The operating economy of the cooling system is relatively poor.

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