变电站直流系统接地将会对变电站的设备造成损害，同时对变电站各设备的安全运行产生极大威胁。

Substation DC system grounding of substation equipment will cause damage, at the same time the substation on the safe operation of equipment to produce a great threat to.

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免维护蓄电池及先进的充电设备为变电所的安全运行及维护提供了可靠的保障。

Maintenance free accumulator and advanced charging equipment provide reliable security for safety running and maintenance of a substation.

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充油设备油位异常是变电站运行中常见问题，通过对电力充油设备油位异常进行分析，找出油位异常的根本原因，并提出相应的解决措施和建议。

Based on the analysis of electrical oil-filled equipment's oil level anomalies, we find out the reason of oil level abnormal, and the corresponding preventives and proposal are put forward.

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