| Today, Fogang county economy is developing rapidly, the demand for power supply power, power supply quality and safety of power supply is increasing. The network architecture, power supply and power supply reliability of the low voltage distribution network in Fogang County, Qingyuan City, can not meet the needs of social and economic development. Therefore, it is of great practical significance to improve the rationality, feasibility and economy of the distribution network planning of Fogang county.In this paper the Fogang County distribution network architecture transformation, the development of load, power distribution equipment operation and other for in-depth analysis, obtains the distribution of high voltage distribution is reasonable, power supply radius whether meet the requirements, load distribution is reasonable, equipment condition, etc. conclusion, so as to determine the plan of the reform objectives and direction.Now Fogang County distribution network mainly in the following problems:â‘ The power network structure is complex, the power supply capacity of the power supply is insufficient or the contact points of the single circuit transmission line is more.â‘¡Power supply reliability does not meet the requirements. Distribution lines, equipment aging and poor technical performance, easy to cause power accident frequent or large area power outages, affecting social security and economic development.â‘¢Part of the medium voltage distribution line load growth rate is higher, but the distribution network engineering construction progress is backward, distribution line diameter is too small, the line is too long, card neck phenomenon still exists.â‘£ Distribution line, equipment loss. The early stage of the construction of the distribution line with a smaller diameter and a dilapidated, high-energy consumption equipment still exists, resulting in line loss rate is high, and the serious environmental pollution problems.Plan in the period 2015-2017, put 13376.15 million yuan, implementation "110kV Huancheng Lubstation 10 kV Binjiang Line and Yanjiang Line on the same tower double circuit project", "110kV Huanghuahe Station 10 kV Shengping Line and Huangsheng Lines on the same tower double circuit project", "low voltage distribution lines, equipment modification," and so engineering, that achieve new and transformation of 10 kV cable 7.31 km and 10 KV overhead line 109.12 km, cable branch box 6, column switch 40, cable trench 1.25km;newandtransformationof10kvdistributionvariable170units,thelowline1334.25 km,lowvoltageswitchcabinet80surface,reactivepowercompensation6515 kvar,electricitycan16813powergridconstructionscaletable.isexpectedtotheendof2017,effectivelyalleviatetheproblemofinsufficientcapacityofpowersupply,andthelinecansupplyrate70.91%increaseto77.86%;improvethereliabilityofpowersupply,thepowersupplyreliabilityrateriseto99.9999%from99.9495%;eliminatefogangdistributionnetworkcardneckphenomenon,circuit,overloadproportionrespectivelyby12.73%and5.45%decreasedto0%;reducedistributionlineandequipmentdepreciation,10kvandbelowacomprehensivelinelossratedecreasedby2.44%to2.06%. |
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