Energy storage control method based on two-part electricity price system

An energy storage control and electricity price technology, which is applied in the integration of power network operating systems, electrical components, circuit devices, etc., can solve the problems of low optimization process accuracy, power-type energy storage protection, insufficient frequency division and intensive reading, etc., to reduce electricity consumption. Cost, improve accuracy, good overall effect

Pending Publication Date: 2019-07-09
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

In the existing technology, at least there are disadvantages such as coordinated control without protection of power-type energy storage, insufficient frequency division and intensive reading, low precision of optimization process, slow calculation speed and low adaptability, etc.

Method used

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  • Energy storage control method based on two-part electricity price system
  • Energy storage control method based on two-part electricity price system
  • Energy storage control method based on two-part electricity price system

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Embodiment

[0051] Such as figure 1 with figure 2 Shown is the specific process and energy flow schematic diagram of the embodiment corresponding to the technical solution of the present invention, and the specific process steps are as follows:

[0052] a. Collect the distributed power generation power of the downstream bus of the contact transformer, the power of large industrial loads and the exchange power with the large power grid.

[0053] b. Establish a grid power balance model with hybrid energy storage. In order to enable the generated power to track the load power, maintain the power balance in the grid, and ensure its safe and reliable operation, large industrial grids must be equipped with energy storage systems. According to the law of energy conservation (without considering energy loss) and the operating constraints of the microgrid, the following relationship can be obtained:

[0054] P HESS (t)=P load (t)-P dg (t)-P ex (t)

[0055] In the formula, P HESS (t) is t...

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Abstract

The invention relates to an energy storage control method based on a two-part electricity price system. The unbalanced power is decomposed into high-frequency and low-frequency components by using a global mean empirical mode decomposition method to be suppressed by a supercapacitor and a storage battery. The unbalanced power is decomposed into a series of intrinsic mode functions by the ensembleempirical mode decomposition (EEMD), the mode aliasing effect of traditional empirical mode decomposition (EMD) is effectively avoided, and the accuracy of instantaneous frequency is improved, and theimperialist competition algorithm is applied to optimize the energy storage capacity by aiming at demand yield and mixed storage full life cycle cost. The method has a unique mixed energy storage capacity allocation model based on the large-scale industrial electricity price, fully considers the two-part electricity price composed of the basic electricity price, the electricity degree electricityprice and the power factor adjustment electricity price, fully considers the charging rules of the maximum demand and the transformer capacity selection, and considers the peak-to-average ratio of the power load and thus the optimization result is enabled to be more reasonable.

Description

technical field [0001] The invention relates to the technical field of large industrial user-side energy storage configuration, in particular to an energy storage control method based on a two-part electricity price system. Background technique [0002] A two-part electricity price system is implemented for large-scale industrial electricity consumption. The electricity price is composed of three parts: the basic electricity price, the electricity price, and the power factor adjustment electricity fee. The basic electricity price is based on the transformer capacity or maximum demand of industrial enterprises (that is, the maximum value of the average load every 15 minutes or 30 minutes in January) as the basis for calculating the electricity price. The power supply department signs a contract with the power consumption department to determine the limit. The monthly fixed charge is not transferred by the actual power consumption. The electricity price refers to the electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/28
CPCH02J3/008H02J3/28H02J2310/64H02J2203/20Y04S20/222Y02B70/3225
Inventor 杨俊杰方济城刘军邵凌峰刘子琦朱彬斌
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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