Regional overall device economic life calculation method based on load rate and coincidence rate

Abstract

The present invention discloses a regional overall device economic life calculation method based on a load rate and a coincidence rate, belonging to the electric power system field. The calculation problem of the overall device economic life is solved. The method comprises the following steps: obtaining the initial asset value, the load parameter, the annual coincidence rate and the annual operation cost of a target regional overall device; determining a function relation curve of the load parameter and the coincidence rate according to the load parameter and the coincidence rate to obtain the function relation expression of the load parameter and the coincidence rate; establishing a bad value model formula according to the annual operation cost, performing data fitting of the coincidence rate and the bad value, and obtaining the function relation expression of the annual coincidence rate and the bad value; establishing an overall device economic life model formula through calculation by using the bad value; and substituting the function relation expression of the load parameter and the annual coincidence rate obtained in the step 2 and the function relation expression of the annual coincidence rate and the bad value obtained in the step 3 into the overall device economic life model formula established in the step S4, and calculating the economic life of the overall device.

Description

【Technical field】 [0001] The invention relates to the field of power systems, in particular to a method for measuring and calculating the economic life of regional overall equipment based on load rate and simultaneous rate. 【Background technique】 [0002] With the deepening of power system reform and the new normal of economic regions, the investment of power grid enterprises will gradually slow down, and higher requirements will be put forward for the cost-effectiveness of power grid investment. In order to optimize the cost and maximize the benefit of equipment, it is necessary to calculate the economic life. The existing economic life measurement methods mainly include the equipment economic life under the static mode and the equipment economic life of the low deterioration value method. The load in each area reaches the highest value at different times, and it is difficult to locate the maintenance cost of a unit of equipment. When it is necessary to evaluate the overal...

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Problems solved by technology

The existing calculation methods of economic life mainly include equipment economic life in static mode and equipment economic life with low deterioration value method. These two methods are effective for specific equipment, but cannot be realized in the calculation of economic life of overall equipment in the region, because The load of each area reaches the highest value at different times, and it is difficult to locate the maintenance cost of a unit of equipment. When it is necessary to evaluate the overall equipment, there is a lack of system parameters to measure the life of the overall equipment.

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