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Multi-parameter fused substation data integrity checking method

A data integrity, substation technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as data retrieval, error detection and recovery methods, etc.

Active Publication Date: 2012-11-28
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

Focuses on improving data quality by limiting the impact of noise, but does not propose methods for data error detection and recovery from the perspective of engineering implementation

Method used

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  • Multi-parameter fused substation data integrity checking method
  • Multi-parameter fused substation data integrity checking method
  • Multi-parameter fused substation data integrity checking method

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Embodiment Construction

[0067] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0068] A multi-parameter fusion substation data integrity verification method, the method adopts the following corresponding verification steps according to the data association relationship:

[0069] Step 1: The weighted voting method verifies the data collected from the same source;

[0070] Step 2: The current accumulation method verifies the measurement data of the current flowing into the closed area;

[0071] Step 3: Verify the data with the constraint relationship by the equal voltage search method or the reasoning method based on the constraint relationship;

[0072] Step 4: The traceability calculation method verifies the different forms of the same data;

[0073] Step 5: The jump detection method checks the rationality of the sampling value and phasor value at two adjacent time points of the AC electric quantity.

[0074] The data association rel...

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Abstract

The invention provides a multi-parameter fused substation data integrity checking method, comprising the following corresponding checking steps according to a data incidence relation: checking data acquired from the same source by a weighted voting method; checking measurement data of the current flowing into a closed region by a current summation method; checking data having a constrained relationship by an equipotential searching method or a reasoning method based on the constrained relationship; checking different forms of the same data by a source-tracing computing method; checking the rationality of the sampled values and phasor values of an alternating-current electric capacity at two adjacent time points by a jumping detection method. The multi-parameter fused substation data integrity checking scheme provided by the invention performs integrity checking on the data in different forms from a plurality of dimensionalities of time and space, and systematically estimates and improves the quality of the basic data, thereby improving the reliability and usability of the substation data.

Description

technical field [0001] The invention belongs to the technical field of electric power system automation, and in particular relates to a multi-parameter fusion substation data integrity checking method. Background technique [0002] At present, the degree of informatization of substations has been greatly improved. Data collection and interactive sharing are no longer the bottleneck of the development of substation automation technology, but data quality has gradually become the focus of engineering technology and operation and maintenance personnel. [0003] In fact, master stations such as power dispatching have long used state estimation to check the state data of the power system. Due to channel limitations, the amount of substation data transmitted to the main station is limited, so the unknown or suspicious quantities can only be estimated through power flow calculations based on known quantities, that is, state estimation. Insufficient basic data and large amount of c...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 吴艳平倪益民姜玉磊窦仁晖姚志强耿明志赵东坡
Owner CHINA ELECTRIC POWER RES INST
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