Reliability investment optimization method and device considering interruptible load participation in power grid

Abstract

The embodiment of the invention provides a reliability investment optimization method and device considering interruptible load participation in a power grid. The method comprises the following steps:the optimal reliability of the power grid is determined according to a preset investment optimization model, a target function of the preset investment optimization model is the sum of a first function and a second function, the first function is an investment cost function used for improving the reliability of the power grid, and the second function is a function used for representing the interruptible load cost variation; an optimal investment amount corresponding to the optimal reliability is determined according to the optimal reliability of the power grid; and investment optimization isperformed according to the optimal investment amount and based on the analysis of the cost effectiveness of the reliability improvement measures so as to obtain an investment optimization result. According to the embodiment of the invention, the optimal reliability of the power grid is determined through the preset investment optimization model, the balance point of the cost and the benefit duringreliability improvement is found based on the analysis of the cost and the benefit of the reliability improvement measures, and the power grid investment is effectively optimized.

Description

technical field [0001] The invention relates to the field of electric power technology, more specifically, to a reliability investment optimization method and device considering the participation of interruptible loads in the power grid. Background technique [0002] Interruptible load means that when there is insufficient power supply during peak hours or emergencies, the power department can temporarily reduce or interrupt the user's power load according to the agreement signed with the power user who interrupts the load, so as to promote Electricity supply and demand balance during peak hours of electricity consumption. After the user reduces or interrupts the electricity load according to the contract, the power department will give the user a certain amount of economic compensation. [0003] As the reliability of the power grid continues to improve, the investment cost of the power grid also increases accordingly, resulting in an increase in electricity prices and econ...

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of the reliability of the power grid, the investment cost of the power grid has also increased accordingly, resulting in an increase in electricity prices and economic costs; on the contrary, lower reliability provides electricity with lower electricity prices, but the occurrence of power outages will also cause huge losses. economic loss

Therefore, although improving the power supply reliability of the power grid will increase investment, it also has corresponding economic benefits, such as the reduction of power outage loss costs and the reduction of demand for interruptible loads, etc., which in turn leads to a reduction in the total cost of the planned project

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