Demand-side interaction based modeling method for power generation dispatching of provincial power grids

Abstract

A demand-side interaction based modeling method for power generation dispatching of provincial power grids includes the steps of (1) constructing a power grid model with provinces being nodes and inter-provincial tie lines being edges based on an actual power grid topology; (2) constructing a demand-side orderly power utilization mode and implementing peak load shifting; (3) establishing a constraint mathematical model which utilizes peak load shifting as a variable and keeps power consumption of users unchanged before and after peak load shifting; (4) transforming the constraint mathematical model into a linear programming model by a piecewise linearization method; (5) constructing a power grid power generation dispatching calculation model by comprehensively considering that system power generation cost and user peak shifting cost are minimum as a target function and considering capacity constraint and topological constraint of the nodes and the edges of the power grid model so as to obtain a power plant power generation plan curve. By the method, temporal and spatial power utilization optimization can be achieved, system grid loss is reduced and network congestion is eliminated.

Description

technical field [0001] The invention relates to the field of power grid operation and scheduling planning, in particular to a provincial power grid power generation scheduling modeling method based on power consumption side interaction. Background technique [0002] With the continuous and rapid development of my country's economy, the power grid has long been facing insufficient power during peak periods, which makes orderly power consumption in areas with concentrated loads a "normal mechanism" to ease the tense situation of power consumption. When there is a power shortage, the power dispatching agency often simply formulates an orderly power consumption plan based on experience based on user classification, user arrears in payment of electricity bills, etc., and issues and implements it in the form of administrative orders. However, the essence of orderly power consumption is the time and space redistribution of the load of each node of the power grid. Through time-order...

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Problems solved by technology

However, there is no good method to finely consider the influence of system network loss and network congestion in power optimization.

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