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Distributed power double-layer planning method

A technology of distributed power supply and two-level planning, applied in data processing applications, system integration technology, forecasting, etc., can solve problems such as not considering DG, and achieve the effect of reducing power failure losses

Active Publication Date: 2022-07-15
CHINA THREE GORGES UNIV
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Problems solved by technology

The current research has not considered the use of segmented switches to divide islands in the planning stage, reduce the loss of power outages in the distribution network, and promote the active consumption of DG in the distribution network through economic signals, and both DG and reactive power compensation devices are regarded as distribution networks. The power grid company owns and conducts unified planning, without considering that DG, reactive power compensation device and switch are subordinate to two different entities, the DG generator and the distribution network company respectively

Method used

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Embodiment Construction

[0059] like Figure 5 As shown, the embodiment selects the IEEE33 node system as an example, deploys and sets 2 DGs in the IEEE33 node system, and applies the method of the present invention to the installation positions, capacities, reactive power compensation devices and segment switches of the two distributed power sources. The layout is optimized.

[0060] like Figure 1-4 As shown, the two-layer planning method of distributed power supply includes the following steps,

[0061] Step 1: Analyze each node of the power distribution system through the network loss sensitivity method, and obtain the network loss sensitivity to the active and reactive power of each node;

[0062] DG can meet the load demand of the distribution network nearby and reduce the power transmission distance, so reducing system network loss is one of its main values, and it is also an important evaluation index for site selection planning; Similarly, reducing system network loss is also the purpose of...

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Abstract

The invention discloses a double-layer planning method for distributed power supply, which includes: calculating the sensitivity of network loss to each node; selecting a node with high loss sensitivity as a candidate installation position of a distributed power supply and a reactive power compensation device; adopting an island area division method to determine The candidate installation position of the segment switch; establish the upper and lower models of the distributed power double-layer planning model; solve the distributed power double-layer planning model to obtain the installation position and capacity of the distributed power, and the installation of the reactive power compensation device Location and capacity and where to install the segment switch. The upper-layer model of the present invention optimizes the installation position and capacity of the distributed power source, and the lower-layer model optimizes the installation position and capacity of the reactive power compensation device and the installation position of the segment switch, and realizes the optimal coordination of the planning and operation of the distributed power source; the introduction of isolated islands The area division method optimizes the installation position of the sectional switch, and uses the distributed power supply to minimize the power failure loss.

Description

technical field [0001] The invention belongs to the field of distributed power supply planning, and in particular relates to a double-layer planning method for distributed power supply. Background technique [0002] With the increasing penetration rate of distributed generation (DG) in the distribution network, DG has a profound impact on many aspects of the distribution network. On the one hand, DG can improve the network loss of the distribution network system, reduce the loss of power outages, and delay the system upgrade and transformation time; Due to the operation characteristics of the power grid, in order to ensure the safety and stability of the system, the distribution network company has to increase the planning investment. However, due to the lack of coordinated planning between the two parties, the planning of both parties is unreasonable, making it difficult for the distribution network company to actively consume DG. This leads to a serious shortage of DG con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70
Inventor 钟浩郑城宇
Owner CHINA THREE GORGES UNIV
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