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Calculation method and system of theoretical line loss between any two points in distribution network

A technology of theoretical line loss and calculation method, applied in the direction of calculation, memory system, system integration technology, etc., can solve the problems of reducing the work efficiency of on-site dispatchers, unable to obtain a certain area, reducing and other problems, achieving strong practical value, reducing network damage effect

Active Publication Date: 2020-05-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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Problems solved by technology

[0008] However, the problem with this technology is that it can only classify and count the line losses of components such as lines, transformers, and capacitors, and can only get the total loss, but not a certain area. Specifically, for the loss distribution between two nodes
In this way, it reduces the work efficiency of on-site dispatchers

Method used

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  • Calculation method and system of theoretical line loss between any two points in distribution network
  • Calculation method and system of theoretical line loss between any two points in distribution network
  • Calculation method and system of theoretical line loss between any two points in distribution network

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Embodiment 1

[0049] This embodiment specifically discloses the theoretical loss calculation between two nodes.

[0050] See attached figure 2 , discloses a schematic diagram of a distribution network with 11 nodes.

[0051] Step S110, obtain component branch and loss step: According to the distribution network operation situation, obtain the node numbers at both ends of the feeder section of the actual distribution network operating feeder, the node numbers of the distribution transformer and load components, the parameters of each component and the power of the load , obtain the feeder root node power, form the node and branch data table required for power flow calculation of the distribution network, use the matching power flow technology to realize the pseudo-measurement and estimation of the load of each non-measurement node, and then use the push forward and back push power flow technology to calculate each Node voltage and branch current, and then calculate the loss of each branch,...

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Abstract

The invention provides a method and system for calculating theoretical line loss between any two nodes of a power distribution network. The method comprises the following steps: obtaining element branch and loss; forming a path matrix; obtaining branches and nodes of a road between any two nodes A and B; obtaining nodes and branches of non-road between any two nodes A and B; carrying out judgment; and summarizing loss. According to the method and system for calculating theoretical line loss between any two nodes of the power distribution network, on the basis of the path matrix and a depth-first search algorithm, the method and system can help distribution network scheduling personnel to summarize and calculate loss of an area between any two nodes of the power distribution network quickly, and know the line loss distribution information, thereby facilitating to find weak spots of a network so as to take optimization measures, reducing network loss and improving economy; and the method and system have higher practical value.

Description

technical field [0001] The invention relates to a calculation method and system for distribution network loss. Specifically, it relates to a method and system for calculating theoretical line loss between any two points of a distribution network. Background technique [0002] Distribution network line loss rate is an important technical indicator of distribution network operation. The theoretical line loss calculation refers to the calculation of the power loss in the transformer winding, transmission line conductor, and series reactor coil that is proportional to the square of the current; the transformer iron related to the operating voltage Core, capacitor, cable insulation medium, shunt reactor and corona loss, etc. The calculation of theoretical line loss can effectively clarify the transformer loss and line loss, which is conducive to line loss management. Furthermore, the lines with large line loss can be modified to reduce the loss; comparing the theoretical line l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/00
CPCY02E40/70Y04S10/50
Inventor 刘自发刘斌李柯王萌王威李梦渔李韦姝
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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