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Method for power distribution network state estimation on basis of SG-CIM model

A technology of SG-CIM and state estimation, which is applied in computing, data processing applications, instruments, etc., can solve problems such as increased difficulty in integration between software, achieve the effects of saving manpower and material resources, increasing data redundancy, and improving estimation accuracy

Inactive Publication Date: 2014-04-16
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Most of these systems are built according to their respective specialties, and the difficulty of integration between software is also increasing, resulting in the phenomenon of "information islands"

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  • Method for power distribution network state estimation on basis of SG-CIM model
  • Method for power distribution network state estimation on basis of SG-CIM model
  • Method for power distribution network state estimation on basis of SG-CIM model

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Embodiment Construction

[0036] A distribution network state estimation method based on SG-CIM model, the method comprises the following steps:

[0037] 1) Analyze the packages related to the distribution network topology in the SG-CIM model, the main classes and the relationship between classes.

[0038] The topology model of power distribution network is the basis of network analysis and application, and the connection relationship of power distribution equipment is described by the relationship between terminal (Terminal) and node (ConnectivityNode). Topology analysis has two basic models, namely Switch / Node model and Bus / Branch model. The Switch / Node model is a Switch / Node model based on ConnectivityNode. The Bus / Branch model is a node / branch model based on the TopologicalNode class. Topology analysis needs to establish aggregation relations between connection nodes and topological nodes, topological nodes and topological islands. SG-CIM defines the electrical topology model and related classes...

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Abstract

The invention discloses a method for power distribution network state estimation on the basis of an SG-CIM model. The method comprises the steps of analyzing packets related with a power distribution network topological structure in the SG-CIM model, main categories and relations between the categories; splicing a major network, a power distribution network and a user topological model to obtain a complete power distribution network topological model; obtaining real-time data information of the power distribution network, performing pre-processing on real-time data according a state estimation algorithm to meet the state estimation requirements; enabling the expansion of a power distribution network state estimation model to meet various functional requirements of state estimation calculation, and performing state estimation. The problem of difficulty in power distribution network state estimation models and data sources is solved, and plenty of manpower and material resources are saved.

Description

[0001] technical field [0002] The invention belongs to the fields of power system information interaction and power grid operation. Specifically, it is a distribution network state estimation method based on SG-CIM model. Background technique [0003] State estimation is to use the redundancy of power grid measurement information, combined with the real-time network structure of the power network, and adopt estimation theory to provide accurate and complete system state data for the dispatch center. At present, the application in the transmission system is relatively mature. [0004] Compared with the transmission network, the topology of the distribution network is more complex, and there are factors such as three-phase imbalance. At present, there are few real-time monitoring points in the distribution network, which makes the state estimation algorithm difficult to perform due to insufficient data redundancy. It is usually necessary to set up pseudo-measurements for ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 胡扬波王成现陈绍洲
Owner STATE GRID CORP OF CHINA
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