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发明公开
CN106602543A 220kv降压变电站电气系统 无效 - 撤回

220kv降压变电站电气系统
摘要：
本发明涉及变电站技术领域，具体涉及一种电气系统。220kv降压变电站电气系统，包括两台变压器，两台变压器均采用120MVA双绕组式的三相三饶组降压变压器，变压器形成220kv电压等级的电源电压，110kv和35kv电压等级的二次电压，220kv侧线路通过两回负荷线向变电站供电，并设有4回出线，中压侧110kv母线出线6回，低压侧35kv母线出线10回。220kv侧母线和110kv侧母线均采用双母线接线方式，35kv侧母线采用单母线分段接线方式。由于采用上述技术方案，本发明在保证供电可靠性、经济性、灵活性的前提下，实现了变压站的运行高效，维护方便的显著优点。
摘要（英）：

The present invention relates to the substation technology field, especially to an electrical system. The system comprises two transformers which both employ three-phase three-winding step-down transformers of a 120MVA duplex winding mode, the transformers form the power voltage with a 220kv voltage grade and the secondary voltage with 110kv voltage grade and the secondary voltage with the 35kv voltage grade, the 220kv line supplies power to the transformers through two load lines, four outgoing lines are arranged, 6 110kv bus outgoing lines are arranged at the middle voltage side, and 10 35kv bus outgoing lines are arranged at the lower voltage side. The 220kv bus and the 110kv bus both employ double-bus wiring modes, and the 35kv bus employs a single bus section wiring mode. Through adoption of the technical scheme, the 110kv step-down substation electrical primary system realizes the substantial advantages of efficient operation and convenient maintenance on the premise of power distribution reliability, economical efficiency and flexibility.

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