变电站主要站用负荷用电规律及其节电策略研究

The electricity using rules of main power load and the strategyof electricity-saving for substation

变电站空调、照明系统用电量大,分布区域广,由于缺乏对不同区域空调、照明系统用电规律的深入研究,导致目前的空调、照明系统节电改造方案较粗糙,难以实现资源最优配置。首先对变电站不同区域的空调、照明系统用电规律进行细致研究,并据此将空调、照明系统分别划分为4类和6类;其次,以各类空调、照明系统的用电规律为依据,按照改造后年节约电量的大小,分别提出空调、照明系统的高、中、低潜力3种改造方案;空调、照明系统各改造方案的组合即可得到满足不同变电站需求的多种改造方案,通过计算各改造方案的投资成本、节电率、回收期等,为变电站空调、照明系统的改造提供合理的数据参考和指导;最后以某500 kV和110 kV变电站节电改造计算为实例,验证该改造方案的正确性和实用性。

The air-conditioning and lighting equipment in sub-station were widely distributed and consumed a large amount of elec-tricity, the lack of in-depth study for the electricity using rule of air-conditioning and lighting distributed in different areas led to roughelectricity-saving strategy, which made it difficult to realize resourceoptimal allocation. In order to solve the problem. First of all, this pa-per did deep analysis on the electricity using rules of air-conditioningand lighting equipment distributed in different places and divided air-conditioning and lighting into 4 classes and 6 classes. Secondly, it de-signed high, medium and low potential retrofit scheme for air-condi-tioning and lighting separately based on the electricity using rules.The combination of the retrofit scheme of air-conditioning and light-ing provided a variety of retrofit schemes to meet the need of differentsubstations. It provided reasonable data reference and guidance forreform of electricity-saving by calculating the investment cost, powersaving rate, payback period of the retrofit schemes. Finally, it tookthe 500 kV and 110 kV substation as example and calculated theprofit under different investment, which proved the correctness andpracticability of the proposed reform scheme in this paper.