6. Lightning protection induction o

6. Lightning protection induction of substationWith the development of power technology, electric power stations have perfect direct lightning protection systems, and outdoor equipment may be directly damaged by lightning strikesLittle. However, the lightning discharge and electromagnetic pulse produced by lightning protection system are controlled by metal pipeline and cable to absorb lightning overvoltageSystem and other weak current equipment produce serious electromagnetic interference, which may affect the normal operation of substation equipment.The main measures of lightning protection are: multi-branch grounding lead to reduce lightning current of bow | line; Improve the structure of the confluence system and reduceInduction of down lead to weak current equipment; In addition to the overvoltage limiting devices such as piezoresistors installed at the power inlet, it can also be made at the signal line accessOptocoupler element; All cables entering and leaving the control room are shielded cables, and the shielding layer shares a grounding electrode; Laying in control room and communication room, etcPotential, the shells of all electrical equipment are connected with equipotential bus bar.Conclusion: the power station is an important protection facility for lightning protection of power system. If lightning strikes, it will cause a large area of power outage, which is seriousAffect social production and people's lives. Therefore, the lightning protection measures of substation must be very reliable.