Power demand side assisting in distribution line overload remission method

Abstract

The invention discloses a power demand side assisting in distribution line overload remission method. The method comprises steps of when a line overload condition occurs in a practical distribution line, analyzing the electricity utilization characteristics of users, predicting the schedulable capacity of a demand side, proposing a demand side function mode based on price, utilizing a peak-valley price to act on a load curve according to a demand elasticity matrix which reflects the incidence relation of user load variation and electricity price variation, moving electricity from the peak to the valley, applying a demand side strategy based on motivation on a peak section which still has a certain overload risk, utilizing a minimum economic loss as a standard for cutting off an interruptible load, and finally, greatly reducing the overload risk of the line. An analyzing method for the schedulable capacities of different industries, an electricity price-load curve action method and an optimal method for an interruptible load cut-off scheme in a peak period are provided.

Description

technical field [0001] The invention relates to a method in which electric power demand participates in alleviating the overload of distribution lines, and belongs to the technical field of optimal dispatching on the load side of the electric power system. Background technique [0002] With the growth of my country's economy and the reform of the power market, the load level of the power system is increasing day by day, and the proportion of non-linear loads such as air-conditioning loads and constant temperature loads is also increasing rapidly. The more popular it is, but in the case of a certain power system network topology, such an operation mode will bring relatively high risks to the system. Once the transmission power of the line exceeds its bearing capacity, the line is overloaded, which is likely to cause the system to be disconnected or even collapsed, resulting in serious economic losses. [0003] The modern power grid has its own extremely complex network struct...

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Problems solved by technology

[0005] In China's current situation, because the electricity market has not yet been formed, and the floating electricity price system has not yet been introduced (there is an attempt to tiered electricity prices at the beginning), so the dynamic energy supply adjustment mechanism and its solutions based on demand response are compared with those in the power transmission and distribution field. Less researched, not enough attention paid

There are some small-scale pilot projects, which are limited to the implementation and use of some proprietary control protocols to perform load shedding and peak-valley regulation on the load side within a limited range, which is far from practicality, standardization, and intelligence. Far

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