[Chinese instrument network meter patent] creative limit, instrumentation invention. Today we will introduce a national invention-issued patent - a remote calibration method for the operation error of a smart meter. The patent was applied for by Tianjin Electric Power Science and Technology Development Co., Ltd. and was authorized on February 9, 2018.
Content Description
The invention belongs to the field of meter metering, and particularly relates to a remote meter calibration method for intelligent meter operation.
Background of the invention
The accuracy of metering devices in operation is always a hot issue that residents and State Grid Corporations are most concerned about. At present, methods such as using statistical analysis methods or adding on-line testing equipment are commonly used, which can be used to monitor and evaluate the operation errors of smart water meters. Although the statistical analysis method changed the past rotation of single-phase smart meters for residential use from regular rotation to spot check, it still controls the overall batch; adding online monitoring equipment will inevitably increase the cost of procurement and maintenance for the company. High cost and limitations.
After searching, no published patent documents of similar technologies were found.
Summary of the Invention
The purpose of the present invention is to overcome the deficiencies of the prior art and provide a remote water meter calibration error remote calibration method.
The figure is a remote verification flowchart of the present invention
In order to solve the existing problems, the technical solution adopted by the present invention is: a method for remotely calibrating the operation error of a smart water meter, which is characterized in that the specific steps of the method are as follows: (1) The intelligent water meter cluster is installed to form a tree topology structure; Remotely obtain the total flow chart and the flow data of the sub-tables in the smart water meter cluster; (2) Obtain the basic model of the flow conservation of the smart water meter cluster according to the tree topology formed by the smart water meter cluster; (3) Correct the line loss error, Introduce the virtual branch dynamic correction of the intelligent water meter cluster topological model, at the same time correct the basic model of the flow conservation, and obtain the flow conservation algorithm model; (4) Obtain the flow increment data of multiple smart water meter clusters and increase the water flow of the smart water meter cluster obtained. The quantitative data is substituted into the flux conservation algorithm model and the relative error is calculated; (5) The calculation results are corrected and the uncertainty is evaluated; (6) The error calculation results are obtained.
The advantages and positive effects of the present invention are as follows: 1. The method utilizes the principle of conservation of flow and big data analysis technology to realize massive on-line operation intelligence without adding standard equipment, changing the meter structure, or changing the topology of the smart meter cluster. Water meter error remote detection. 2. This method establishes a modified topology model based on virtual branches to achieve 100% reliability of on-line operational smart meter error measurement, and guides smart meter replacement work leanly. 3. This method incorporates the big data prediction technology of error trends in smart water meters. Before the outlier problem occurs, users can complete the task without changing their operations, eliminate hidden dangers, and avoid unnecessary measurement accuracy disputes. 4. The present invention can effectively reduce the cost of marketing operations, significantly reduce the consumption of personnel, vehicles, equipment, and other resources in the verification process, save the cost of marketing, maintenance, and maintenance; and, by implementing remote verification, the accuracy of faulty intelligent water meters can be realized. Replacement will reduce the number of trouble-free smart water meters that can be removed and green, save procurement funds, significantly reduce the cost of operation and maintenance of the enterprise, achieve quality improvement, and have significant economic and social benefits. 5, the present invention uses the whole data sample thinking mode, mining information acquisition system massive computer data, without the help of external standard instruments, intelligent remote meter remote metering technology research, making use of both parties can real-time understanding of the accuracy of smart meter metering device, Satisfy the customer's expectations and enhance the company's corporate image.
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