Modification Practice of a 110 kV Half-height Layout Substations
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Abstract
110 kV substations, established from the 1980s to the early 1990s, cannot meet developing needs owing to growth of load around, and have such problems as aging and peeling of cement pole, rain leakage of building, equipment aging, difficult searching of spare parts and stuck isolating switch, all of which are potential risks to influence their operation. So, it is an urgent task to upgrade or reconstruct them. In the aspects of reconstruction without turning off electricity and t reconstruction by turning off electricity, this paper proposed several sets of 110 kV and 220 kV reconstruction schemes and made specific analysis and instructions on steps and precautions of reconstruction without turning off electricity. Reconstruction will improve their equipment level and operation situation so as to make them satisfy the demand of load and enhance electricity supply capacity. Moreover, as this paper is of beneficial reference for subsequent reconstruction and design of substations, it will produce huge economic benefits and social effects.
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