Transmission congestion elimination method under participation of interruptible load

Abstract

The invention relates to a transmission congestion elimination method under the participation of interruptible load. According to the method, user loss is evaluated according to the marginal value, a direct current optimal power flow model for coordinating unit output adjustment and interruptible load scheduling is built, and the congested lines are eliminated gradually through a sensitivity analysis method. The method includes the specific steps that (101) a user power economic value is obtained according to an input-output method and the department electric power demand curve cluster analysis; (102) the economic losses generated when certain load is interrupted by an interruptible load user K are analyzed according to the user power economic value and user electric power demand curve analysis; (103) with the minimum social cost generated by congestion as the target, the direct current optimal power flow model for coordinating the unit output adjustment and the interruptible load scheduling is built; (104) the congested lines are eliminated through the sensitivity method. Compared with the prior art, the transmission congestion elimination method has the advantages of capable of reducing social economic losses generated when the transmission is congested and the like.

Description

technical field [0001] The invention relates to a power load balancing method, in particular to a method for eliminating transmission congestion with the participation of interruptible loads. Background technique [0002] In the steady state operation of the power system, the overload of the line or transformer is called transmission congestion. At present, with the gradual opening of the transmission network, such as the vigorous promotion of direct purchase of electricity by large users, the power trading method will change from the traditional centralized decision-making to the market decentralized decision-making, which will increase the randomness of power flow, and the problem of grid congestion will also become a problem. getting more serious. Transmission congestion not only makes it impossible to realize the optimal power trading plan, but also affects the allocation efficiency of power resources. At the same time, real-time congestion also threatens the safe and s...

AI Technical Summary

Problems solved by technology

The determination of user interruption loss is the key to the participation of interruptible loads in transmission congestion management. Although extensive research has been carried out on the participation of interruptible loads in congestion management, none of the existing research reports have made an in-depth analysis of user interruption losses, and most of them are based on Simplified handling of user quotes

Generally speaking, users will declare compensation prices based on their average power outage losses, but false reporting of power outage costs will not only cause inefficiency in power distribution, but also use a fixed average price as the compensation basis to cause compensation deviations for users; in addition , the interruption loss model determines the congestion management model, and the simple and effective user loss determination method can also reduce the complexity of congestion management to a certain extent

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