Optimized dispatching method for energy balancing of smart distribution network

Abstract

The invention discloses an optimized dispatching method for energy balancing of a smart distribution network. The method comprises the steps of determining peak and valley time durations of operation of a power distribution network according to results of characteristic analysis and load prediction carried out according to accessed distributed power sources, microgrids and loads; determining daily output curves and power plans of adjustable loads of the distributed power sources and the microgrids, and uniformly deploying power sources, power distribution networks, load operation states, namely, maximizing output through renewable energy sources at electricity consumption peak time under grid-connected operation of the distributed power sources; connecting remaining electricity to the network under the condition that load needs are met, charging an energy storage system at electricity consumption valley time, and power supply is carried out according to optimized dispatching results; electricity utilization is not limited at the electricity consumption valley time, and users are guided to consume electricity through a peak-valley electricity pricing mechanism. According to the optimized dispatching method for the energy balancing of the smart distribution network, under the conditions of energy conservation and emission reduction, the integrated optimizing method meeting multi-stage energy balance is established, on the basis of guaranteeing safe and reliable power supply of the smart distribution network, the proportion of digested renewable energy sources is maximized, the economy of the power distribution networks is improved, and short-term energy balance is achieved.

Description

[0001] technical field [0002] The present invention relates to a smart distribution network energy balance optimization scheduling method, in particular to a distribution network energy balance optimization scheduling method based on distributed power sources, micro-grids, and controllable loads. Background technique [0003] In the smart distribution network, there are disturbance sources such as wind power generation, solar photovoltaic power generation, and diverse loads. Various forms of power fluctuations will appear in the distribution feeder at any time, and even intermittent changes in distributed power output. This random power variation may occur during peak load periods or during low-valley load periods, increasing the peak-to-valley difference in load and possibly causing overload during peak load periods. The distribution network is directly connected to the load. Compared with the transmission network, the nature of the power consumption of each load in the d...

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Problems solved by technology

[0005] Aiming at the problems of distributed power output disturbance and diverse load disturbance that may occur in the ultra-short term in the prior art, the purpose of the present invention is to provide a controllable distributed power supply and energy storage device in a smart distribution network to achieve The short-term energy balance smart distribution network energy balance optimal scheduling method, on the basis of ensuring the safe and reliable power supply of the smart distribution network, can accommodate the largest possible proportion of renewable energy and improve the economy of the distribution network

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