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An optimal distribution network measurement configuration method based on improved 0-1 integer programming

An integer programming and distribution network optimization technology, applied in multi-objective optimization, forecasting, data processing applications, etc., can solve problems such as difficulties, slow speed, and inconformity with line synchronization measurement systems, so as to improve applicability and reduce costs Effect

Pending Publication Date: 2019-02-19
JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
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Problems solved by technology

Although observability analysis can judge whether an existing configuration scheme can achieve network-wide scalability, it cannot directly give the boundary conditions of observability and non-observability, so it is still difficult to apply it to the field of optimal configuration.
The matrix analysis method should be judged during the processing of the measurement matrix, while the topology analysis method is completed by searching the maximum full-rank forest of the measurement system. The calculation is complicated and the speed is slow, which does not meet the requirements of the line synchronization measurement system.

Method used

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  • An optimal distribution network measurement configuration method based on improved 0-1 integer programming
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  • An optimal distribution network measurement configuration method based on improved 0-1 integer programming

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Embodiment 1

[0056] figure 1 It is the line connection diagram of the 18-node standard power distribution system. This system is a single power distribution network, and the connection load of each node is omitted. Number each node and each line, such as figure 1 As shown, there are 18 nodes and 17 lines in total.

[0057] Lines 1, 9, 10, 13, 15, and 17 in the figure are the lines connected to the end nodes, and all line measurement terminals must be configured (on both sides of the line), so that the parameters in the configuration matrix B can be corrected to determine the possible Some considerable nodes. After the correction, the 0-1 integer programming operation is performed, and the objective function is:

[0058]

[0059] The observability constraints listed according to Equation 6 are:

[0060]

[0061] There are 12 inequality equations in total. Through the integer programming of Lingo software, the optimized solution that can be obtained quickly is l5=l7=l11=1. Combin...

Embodiment 2

[0064] For the IEEE33 node power distribution system, each node and each line are also numbered, with a total of 33 nodes and 32 lines. According to the topology analysis, there are 5 lines connecting the end nodes. First, determine the measurement configuration here. After the matrix is ​​corrected, an improved 0-1 integer programming operation can be performed according to formula 6, and an optimized solution can be obtained as image 3 shown.

[0065] In addition to the 5 lines connecting the end nodes, there are 12 lines that need to be equipped with measurement terminals, that is, at this time A total of 17 sets of line measurement terminals need to be configured. In fact, limited by the requirements of the line topology, this optimal configuration has redundant measurements: 8-9 branches, 9-10 branches, so it can be seen that there is more than one optimal configuration scheme at this time. We can constrain the value of individual parameters before the operation, and...

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Abstract

An optimal distribution network measurement configuration method based on improved 0-1 integer programming is disclosed. which includes: introducing the relevant theories and methods of 0-1 integer planning into the optimal configuration of the distribution network measuring device, and effectively realize the optimal configuration of the distribution network measuring device according to the economic environment factors, network nature factors and related constraints of the distribution network. The method is of great significance for the analysis and calculation of the optimal configurationof the distribution network measuring device.

Description

technical field [0001] The invention relates to the technical field of measurement device configuration optimization, in particular to a distribution network measurement optimization configuration method based on improved 0-1 integer programming. Background technique [0002] With the expansion of the network scale, how to use the limited cost input to realize the optimal measurement configuration of the power grid measurement device, so as to improve the observability of the system as much as possible, is particularly important. If all distribution network lines are equipped with measurement terminals, a large amount of redundant data will be generated, and the economic and technical aspects are not strong. The traditional PMU optimization configuration in wide-area monitoring mostly uses intelligent search algorithms, which are slow to solve, complex condition definitions, and prone to local optima, so they are not suitable for optimal configuration of new line measurement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/04G06Q50/06
CPCG06Q10/047G06Q50/06G06F30/18G06F2111/06
Inventor 蒋涛刘亚东许磊刘宗杰张煊李楠贾楠姚博文王威陈曦林浩然
Owner JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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