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Power system load scheduling method for distributed energy storage system

A distributed energy storage and power system technology, applied in the field of power load scheduling in power systems, can solve problems such as less research on distributed energy storage systems, and achieve good results

Active Publication Date: 2017-08-29
HOHAI UNIV
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  • Application Information

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Problems solved by technology

[0003] The stable operation of the power system requires the power of each node to be stable. On nodes with energy storage devices, ensuring that the node power is stable within the constraint range is an important research topic for power workers. At present, energy storage devices with constraints are widely used However, the research on distributed energy storage systems with constraints is rarely involved, so this invention proposes a power system load scheduling method that considers distributed energy storage systems , under the constraint conditions, schedule the power load schedule in order to achieve good results

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  • Power system load scheduling method for distributed energy storage system
  • Power system load scheduling method for distributed energy storage system
  • Power system load scheduling method for distributed energy storage system

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[0028] In the following, the present invention will be further clarified with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand various equivalent forms of the present invention. All the modifications fall within the scope defined by the appended claims of this application.

[0029] (1) Establish a power system model with a distributed energy storage system. The active power balance equation in the microgrid can be expressed as:

[0030]

[0031] Where P G,t Represents the generating power of motor t, S g Represents the collection of motors in the distributed energy storage system; P L,i Represents the power of load node i, S l Represents the load node set; P B,r Represents the power of energy storage node r, S b Represents the energy storage node set, the energy storage device...

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Abstract

The invention discloses a power system load scheduling method for a distributed energy storage system. The method comprises: establishing a power system model containing the distributed energy storage system; then, setting the initial power value for each node and according to the constrained conditions, establishing a node interconnected matrix; and using the initial power value of each node and the power value of the node interconnected matrix to each node for updating to obtain the balanced power value for each node in a stable state. According to the invention, under the condition that the constrained conditions are satisfied, the re-calculated balanced power value of each node is compared with the value under the condition that the energy storage system is not constrained; and the calculation example analyzing is presented to verify the validity of the method.

Description

Technical field: [0001] The invention relates to a power system load dispatching method considering a distributed energy storage system, which belongs to the field of power system power load dispatching. Background technique: [0002] In recent years, with the vigorous development of smart grids, renewable energy power generation, distributed power generation and micro-grids, and electric vehicles, the research and application of energy storage technology has received more and more attention from countries all over the world and has achieved rapid development. The application of distributed energy storage system involves all links in the power distribution system, and has a wide range of application prospects. Giving full play to the role of distributed energy storage equipment can effectively improve the operational reliability of the system, improve the power quality of the system, improve the accessibility of renewable energy in the distribution network, increase the economic ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/32
CPCH02J3/00H02J3/32H02J2203/20
Inventor 孙永辉武小鹏翟苏巍卫志农孙国强王义张博文王加强
Owner HOHAI UNIV