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A low-voltage distribution network modeling method with distributed power sources

A technology of distributed power supply and low-voltage distribution network, which is applied in the field of electric power engineering to save system resources, facilitate management and maintenance, and reduce the amount of calculation.

Active Publication Date: 2016-01-20
BEIJING SIFANG JIBAO AUTOMATION +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the distributed power unit cannot be simply regarded as a power generation unit model, and it is necessary to consider the support for bidirectional energy flow and flexible attribute expansion

Method used

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  • A low-voltage distribution network modeling method with distributed power sources
  • A low-voltage distribution network modeling method with distributed power sources
  • A low-voltage distribution network modeling method with distributed power sources

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Embodiment Construction

[0047] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0048] Such as figure 1 As shown, it is a flow chart of a low-voltage distribution network modeling method with distributed power sources in the present invention, wherein the modeling process is:

[0049] Step a, establishing a distributed power supply model in the low-voltage distribution network model.

[0050] A distributed power supply is composed of wind turbines, photovoltaic arrays, fuel cells, gas turbines, energy storage units and other power generation equipment and their loads and related control switches; in this way, the distributed power supply model is split into CIM (CommonInformationModel, public A combination of the "Equivalent Source Model", "Load Model" and "Switch Model" that already exist in the Information Model). Create distributed power generation equipment such as wind turbines...

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Abstract

The invention relates to a modeling method of a low-voltage distribution network with a distributed power supply. The modeling method includes the steps that a distributed power supply model in a low-voltage distribution network model is established; a distribution transformer combination model in the low-voltage distribution network model is established; a low-voltage transformer substation model is established in the low-voltage distribution network model; topology association and measurement data points between the low-voltage distribution network model and a medium-voltage distribution network model are set; low-voltage distribution network measurement data are acquired and mapped into the established low-voltage distribution network model; the low-voltage distribution network model is checked through topology verification. Thus, while the influence on the functions of an existing power distribution automation system is minimum, the low-voltage power grid model with the distributed power supply is introduced, so that modeling of the low-voltage distribution network meets the actual situation better, and power distribution equipment is more convenient to manage and maintain. The calculated amount is reduced in the processing process, and system resources are saved.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering and relates to a modeling method suitable for a low-voltage distribution network including distributed power sources. Background technique [0002] With the development of intelligent distribution network, under the encouragement of the state's new energy development policy, the access of distributed power supply will increase day by day. The necessity of monitoring and analysis is increasing day by day. To this end, it is necessary to establish a low-voltage distribution network model with distributed power sources suitable for distribution automation systems. [0003] The distribution automation system generally only considers the modeling of the medium and high voltage distribution network equipment, and refers to the common information model (CIM) in the IEC61970 standard, which is relatively mature; the introduction of the model of the low voltage distribution network shoul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 孙秋鹏郑建平黄小耘葛亮黄红远赵凤青彭飞进谭志海黄智勇黄松波
Owner BEIJING SIFANG JIBAO AUTOMATION
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