CAJ | 학술논문

台风过境时，较大的风力往往会引发风偏放电、断线、倒塔等事故，是对沿海地区电网安全可靠运行威胁最大的自然灾害之一。由于台风灾害的高风险性，建立台风预警体系能更经济有效的提升电网抵御台风灾害的能力。现有的电网台风风险预警方法直接使用气象局提供的区域性预测风速，并未考虑具体线路所处的微地形环境对风速的影响，易出现漏警以及虚警。因此，提出一种计及微地形影响的输电线台风风险预警方法。该方法把预警区域按经纬度划分为0.01°×0.01°的网格，将网格内的输电设备与网格微气象、微地形信息关联，建立了输电线微地形条件下的风速修正系数计算方法，可更准确地辨识遭受台风灾害影响的线路集并按风险等级进行预警。实例验证了方法的可行性和有效性。
태풍과경시，교대적풍력왕왕회인발풍편방전、단선、도탑등사고，시대연해지구전망안전가고운행위협최대적자연재해지일。유우태풍재해적고풍험성，건립태풍예경체계능경경제유효적제승전망저어태풍재해적능력。현유적전망태풍풍험예경방법직접사용기상국제공적구역성예측풍속，병미고필구체선로소처적미지형배경대풍속적영향，역출현루경이급허경。인차，제출일충계급미지형영향적수전선태풍풍험예경방법。해방법파예경구역안경위도화분위0.01°×0.01°적망격，장망격내적수전설비여망격미기상、미지형신식관련，건립료수전선미지형조건하적풍속수정계수계산방법，가경준학지변식조수태풍재해영향적선로집병안풍험등급진행예경。실례험증료방법적가행성화유효성。
When a typhoon transits a region, the accidents of line breakage and tower collapse often occur due to the large wind force, so it is one of the natural disasters which are the most threat to operational reliability of transmission lines in coastal areas. Because of the high risk of typhoon disaster, establishing a typhoon early warning system is more economical and efficient to enhance the ability of power grid to withstand typhoon disasters. The existing typhoon risk early warning method for power grid uses the regional forecasting wind speed provided by the meteorological agency directly, which does not take the influence of micro-terrain around specific line on the wind speed into account, thus the missed alarm and false alarm are easy to appear. Therefore, a typhoon risk early warning method for power transmission line considering micro-terrain correction is proposed in this paper. The warning area is divided into 0.01°×0.01° grids by longitude and latitude in this method, and transmission equipment in each grid is associated with the microclimate information and micro-terrain information of the grid. The calculation method of correction factor of wind speed for transmission line under micro-terrain conditions is set up, in order to identify the set of lines that may suffer from typhoon disaster more accurately, and early warning is conducted according to risk level. The feasibility of this method is proved by an instance.