Laying method of crossover arrangement for substation cable

Along with the raise of power industrial automation level, there are more and more cable connections in substation, and the cable laying such as optical cable and data line etc. becomes confused. Because the requirements of reliability for any core of cable are very high after the operation of secondary electrical equipment, the overhaul, expansion and fault of cable has great influence on cable operation, which makes scientific arrangement of cable before cable laying a technical bottleneck to be solved for present substation construction. The cable laying method crossover arrangement of cable node was adopted in Xining 750 kV substation, which raised the efficiency and quality of cable laying construction, realized the un-crossover of cable completely in cable chute, culvert and roadbed of station, arranged the cable currentabilityreasonablyandavoidedhightemperatureofcablewhenthecablelayingwasdensified,andimprovedthecablelaying technology. The method also made the cable laying a scientific and reasonable arrangement, and once-through construction of cable laying, which realized the short period of cable laying construction, convenient and simple of cable laying in overhaul and expansion construction, and ensured the safe and economic operation of substation.