基于效能—全壽命周期成本的變電站經(jīng)濟性評價
[Abstract]:The concept of life-cycle management (life circle management, LCM) has already been effective in the investment management of some newly built substation projects. The application of LCM in substation transformation, equipment selection and equipment procurement bidding has also played a positive role. Although the application of LCM in substation project is still in the initial stage, it has made great progress and corresponding achievements. However, as the main investment body of substation, the most important task of power grid enterprises is to ensure the safety and reliability of substation operation and the quality of power supply, in addition to reasonably controlling the investment of substation project and maximizing the value of the enterprise. To meet the needs of social electricity, so that the project investment can take into account economic and social benefits. Based on the idea of comprehensive evaluation and on the basis of the application of substation LCM, a (UC) analysis and evaluation system of substation efficiency and cost is established in this paper. The UC system includes efficiency and (life circle cost, with full life cycle cost. LCC) two complementary evaluation indexes, respectively, from the social efficiency cost and the grid company investment cost two aspects to evaluate the substation project plan. The efficiency of substation mainly considers social blackout loss, asset utilization, land opportunity cost and environmental cost. Among them, the introduction of land opportunity cost and environmental cost is the innovation and perfection of efficiency system. The land opportunity cost and the land lease cost in LCC are unified as the shadow cost of land, which reflects the real value and potential value of land. In the environmental cost, the electromagnetic radiation, radio interference, noise pollution and Greenhouse Effect caused by SF6 are considered in this paper, and the calculation method of quantifying the environmental impact into economic index is given. Substation LCC includes four parts: initial investment cost, operation and maintenance cost, fault cost and decommissioning cost. On the basis of previous studies, this paper makes a more detailed division of the four costs, and gives a detailed calculation method. Among them, the initial investment cost not only includes the purchase cost of equipment (including the related cost of construction), the cost of land lease, but also the innovative introduction of technological transformation costs and loan interest. The formula for calculating the total amount of interest under the equivalent principal and interest repayment mode is also derived. The detailed division of LCC is helpful to measure the long-term investment of the project, cooperate with the quantitative calculation, help the company to make the best decision, promote the company to save the cost and increase the profit. Finally, taking the typical 500kV substation as an example, using the UC analysis and evaluation method, the paper discusses the difference between the gas insulated metal closed switch equipment (gas insulated switch, GIS) substation and the air insulated switchgear (air insulated switch, AIS) substation. The comprehensive performance of the two schemes is evaluated and the corresponding conclusions are given. Finally, the uncertainty analysis of the factors influencing the results of the comprehensive evaluation of the program is made.
【學位授予單位】:浙江大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:TM63
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