High-voltage power distribution system diagrams and principles:
1, lightning arrester, when there is a shock voltage in the line can be released through the lightning arrester connected to the earth;
2, is a charged display, lights and grounding is an integral component;
3, is the extraction of the equipment, a single you this figure is only PT handcart;
4, the same is the voltage Transformer, the difference between this and box 1 is 2 voltage transformers;
5, the fuse is used to protect the voltage transformer, the back of the ground is the star point of the three voltage transformers to be grounded.
6, the same problem: is the withdrawal type equipment, single you this figure is only PT handcart;
7, the same problem: is the withdrawal type equipment, single you this figure is only PT handcart;
8, the same problem: lightning arrester, when there is a shock voltage in the line can be released through the lightning arrester and the earth connection;
9, is the grounding switch, this is the back end of the blackout Maintenance and this switch to close, safety, in addition to this switch and 67 between the circuit breaker is interlocked;
10, as long as there is this triangle place indicates that there is an outgoing line from this point, is the external wiring.
Expanded information:
Transformer safety operation management work is the focus of our daily work Through the abnormal operation of the transformer, common failure analysis of experience, will be conducive to timely and accurate judgment of the cause of the failure, the nature of the timely adoption of effective measures to ensure the safe operation of the equipment.
Transformer is an extremely important electrical equipment in the transmission and distribution system, according to the operation and maintenance of the management of the transformer must be regularly inspected in order to understand and master the operation of the transformer in a timely manner, and timely and effective measures, and strive to eliminate the fault in the bud, so as to ensure the safe operation of the transformer. Transformer abnormal operation and common failures are as follows:
I. Transformer sound abnormalities.
Second, in the normal load and normal cooling mode, the transformer oil temperature continues to rise.
Three, the transformer insulation oil color changes significantly.
Four, oil pillow or explosion-proof tube oil spraying.
V. three-phase voltage imbalance.
VI. Relay protection operation.
Seven, the insulating ceramic casing flash and explosion.
VIII. Tap changer failure.
Baidu Encyclopedia - Power Distribution System
Baidu Encyclopedia - High Voltage Power Distribution Equipment