The Electric Power Resources Development Of The Environment Influence Evaluation Method And A Case Research

Carry the estimate according to the electric power of Jiangsu the result and power supply result the programming, the wire net of Jiangsu is in 2008 year agos, lack the electricity more serious, in order to alleviate to generate electricity to pack the situation that machine tightly lack"ten one five" periods, satisfy the demand that the wire net of Jiangsu burden quickly increase, the wire net of Jiangsu is holding firmly opening to wholesaling electricity item.This research chose to use the ligang power three periods to send out the engineering item conduct and actions research case example, and the long pull circuit produce of environment influence carry on the analysis and investigate the environment quantity present condition, study the electric power resources develop of choose the address and the path choice of rationality, to the interference that the influence, electromagnetism and an environments of the ecosystem environment produce, and carried on the related evaluation, the conclusion is as follows:(1) The electromagnetism environment influence analysis and evaluation1) The station address:The type expresses than the monitor result, changing the electricity to distribute to mainly be decided by to pass in and out the distribute of line circumstance and a line circumstances the electromagnetism out of the fence field, an engineering of case hurl luck after, output radio interference of the station area 20 m outside the fence the value is is small in 55 dB(0.5 MHz), matching the radio interference evaluation standard, to station the environment sensitive outside the area order to without influence.2) The power line road magnetic Induction electric field strength and respond intension:Through investigate and measure, the circuit follows two layer terrace(7.5 m) that the line has a little amount residents' building to set up to make to bask the pedestal to use.Manager the theory calculation, residents building 2 layer terraces satisfy the 4 kV/m to reach the mark, leading a line of line height all is a 2 lm, within the scope of the side leads the outside 5 m of line if someone's member is usually the roof terrace of the activity, can't attain a line should adopt to install to shield line or other protection measures highly.3) Power line road radio interference:Compute the result according to the theories, this engineering 500 kV is together a back track of tower power line road to lead the radio interference value that the line casts shadow the 20 m to be apart from a creation in the side biggest for 30.4 dB(the 14 m line is high, frequency is 0.5 MHz), meet the radio interference evaluation standard of the provision of the nation.Reduce with the aggrandizement gradual of the horizontal distance at the same time, go to the 100m to the environment of influence is already very small.(2) An environment influence analysis and evaluationThe 500 kV power line road hallway under of a value of the audibility yawp is smaller.The hour of a clear sky, line next person's ear is basic and can't feel the circuit circulate the yawp, the measured value is basic is equal with the environment background value;Even under the condition of overcast and rainy day, because of the 500 kV power line through a line of hour of area of residents highly higher, it affects the value also small in 45 dB(A).After the circuit hurl carry, its line is next and learn the environment and can maintain in the present condition level, GB3096-93《A standard of the city district》in 1 area standard.(3) The ecosystem environment influence analysis and evaluationCurrently the station address of an item of case is in addition to having parts of farm crops, having no natural originality to plant the quilt, also did not discover the wildlife of need the point protection.The power line road needs to set up a pair of back trackses pole tower about 843 group, the circuit tower need the permanence to take up about the 30.54 hm~2 land, those part of lands mainly uses the ground and the river nets for the agriculture, construction be over after, the item covers the nudity in the scope earth's surface, the soldier carry on solid turn, green turn.(4) The environment quantity present condition investigates and evaluatesThe condition monitor result that draw up to set up the address and power line roads follow the line total radio interference value better.The radio interference background monitor result show that in addition to two radio broadcast signals that measure to order to is near to by frequency affecting the super mark, other 11 monitor values satisfy the nation standard request.Follow the line voice to learn the environment quantity according to an environment present condition monitor result, the station address and power line road better, measure to order in addition to the part is nearer apart from the highway, be subjected to the transportation yawp affect outside, other measure to order and all can attain《the environment yawp of the city district standard》the GB3096-93 medium 1 area standard.