[Chinese instrument network meter patent] creative limit, instrumentation invention. Today we will introduce a national invention-issued patent - a method of verification during the online operation of a smart water meter. The patent was applied for by Tianjin Electric Power Technology Development Co., Ltd. and was authorized to be announced on February 2, 2018.
Content Description
The invention belongs to the field of flow measurement, and particularly relates to a method for checking during on-line operation of a smart water meter.
Background of the invention
Due to the flow instrument's performance during the work process, its performance will be reduced compared to the initial state. The period check is performed to determine whether the measurement standard, reference material, or other measurement instrument maintains its original state. In order to grasp the measurement instrument performance degradation.
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 method for checking the duration of running an intelligent water meter online.
The figure is a remote verification flowchart of the present invention
The invention solves the technical problem by adopting the following technical scheme: a method for checking the duration of running an intelligent water meter online, which is characterized in that: the specific steps of the method are: (1) The intelligent water meter cluster is installed to form a tree topology structure; Remotely acquire the total table and flow data of the sub-meters in the smart water meter cluster to obtain the basic flow conservation model of the smart water meter cluster; (2) Introduce a virtual branch dynamic correction smart water meter according to the tree topology formed by the smart water meter cluster. Cluster topology model, to obtain the initial flow conservation algorithm model; (3) Record the flow data of the smart meter cluster in the initial state, substituting the initial flow conservation algorithm model, calculate the initial error; (4) Within the period of time set for verification, according to the introduction of The virtual branch dynamically corrects the topological model of the smart water meter cluster and acquires the model of the flow conservation algorithm during the period; (5) Obtain the flow increment data of multiple smart water meter clusters during the period of check and set time, and obtain the smart water meter cluster. The flow conservation flow data is substituted into the flow conservation algorithm model to calculate the relative error (6) correcting the calculation results and the uncertainty evaluation; (7) during the current error and Comparative initial error verification assessment period.
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 purpose of the present invention is to perform a period check on all on-line operating smart meters at low cost and high efficiency, and pay attention to the trend of running errors, without using external standard instruments, so that both supply and use parties can understand the accuracy of the metering device in real time. Sex.
For more information, please download the full specification of the patent.
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