Metering error calculation method based on ITD and time sequence analysis

A technology for time series analysis and error measurement, applied in computing, instrumentation, data processing applications, etc., can solve problems such as over/under envelope, difficulty in selecting the optimal smoothing step size, and large amount of calculations that cannot be used for online analysis
CN106203732AInactive Publication Date: 2016-12-07STATE GRID CHONGQING ELECTRIC POWER +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
STATE GRID CHONGQING ELECTRIC POWER
Publication Date
2016-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a metering error calculation method based on ITD and time sequence analysis. According to the metering error calculation method based on ITD and time sequence analysis, rotational components and trend components of a metering error historical time sequence are separated online through the ITD decomposition method, an ARMA model is adopted to the trend components changing stably for error modeling prediction, an ARIMA model is adopted to the rotational components not changing stably for predicting this part of errors, finally, prediction values of all error component prediction models are superposed, the prediction result of electric power metering errors is calculated in real time, and online analysis and small prediction errors can be achieved. The method is suitable for application and popularization in the technical field of gateway metering equipment condition assessment.
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Description

technical field

[0001] The invention relates to the technical field of status evaluation of gateway metering equipment, in particular to a method for calculating metering errors based on ITD and time series analysis. Background technique

[0002] With the deepening of the market-oriented reform of the power industry, the exchange of power at grid-connected power generation, inter-regional power transmission, inter-provincial power transmission and provincial power supply is increasing, and power companies have begun to pay more attention to the maintenance of their own economic interests. How to ensure the accuracy of electric energy metering devices and maintain the fair and orderly operation of the electricity market is an important topic in the current research of the electricity market. The operation management of electric energy metering devices at the gateway mainly includes on-site inspection and periodic rotation. DL / T 448-2000 "Technical Management Regulations for E...

Claims

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