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The first local measurement technical specification for online monitoring of metering performance of public charging piles in China was released

2024-01-04

International charging and changing network

International charging and changing network


With the accelerated development of the new energy vehicle industry, electric vehicle charging piles have entered thousands of households, and their measurement accuracy has also received more and more attention. It is understood that the Hubei Provincial Market Supervision Bureau has issued the "Technical Specifications for Online Monitoring of Metering Performance of Public Charging Facilities for Electric Vehicles (Big Data Accounting Method)" (JJF (E) 106-2023), which will be implemented on March 1, 2024. This technical specification was completed by the Marketing Service Center of State Grid Hubei Electric Power Co., Ltd. in conjunction with Hubei Institute of Measurement and Testing Technology, Wuhan Institute of Measurement and Testing (Research) and other units. It is the first online monitoring of charging piles in China based on big data accounting methods. Local metering technical specifications innovatively solve the problem of online monitoring of charging pile metering performance.

 

Adhere to the problem-oriented, explore a new path of low-cost and cost-effective big data online monitoring

As of November 2023, the number of public charging piles in Hubei Province has reached 130,000, and it is expected that the number of public charging piles will reach 250,000 by 2025. In order to strengthen the measurement supervision of public charging piles and protect the legitimate rights and interests of consumers, the Hubei Provincial Market Supervision Bureau proposed the supervision work idea of "taking statistical sampling verification as the basic means, taking credit supervision as the key starting point, and taking online monitoring as the main direction". On the basis of the formal implementation of two local metrology technical specifications, "Measurement Supervision and Management Specifications for Public Charging Facilities for Electric Vehicles" and "Technical Specifications for Statistical Sampling and Measurement Performance Evaluation of Public Charging Facilities for Electric Vehicles", we will explore low-cost and high-efficiency measurement supervision and measurement of charging piles. A new approach to performance monitoring. State Grid Hubei Electric Power took active actions, organized technical forces, and actively studied with relevant enterprises and measurement technology institutions. Based on clarifying the charging service market structure and consumption characteristics, it determined the working path of using the principle of energy conservation to develop big data accounting technology for charging pile measurement performance. .

Let the data run more, crack the problem of charging pile measurement performance monitoring

In November 2022, the State Grid Hubei Marketing Service Center selected more than 100 public charging stations to complete small-scale technical verification, and initially determined the feasibility and reliability of the big data accounting online monitoring technology solution. In early 2023, relevant core technologies and algorithms Obtained national invention patent authorization.

The person in charge of the State Grid Hubei Marketing Service Center introduced that the basic principle of this monitoring technology is that the total amount of electricity measured by the electric energy meter at the power supply end of the charging station is equal to the sum of the charging amount and other energy losses in the charging station. By combining the power consumption information collection system of the power grid company and By interacting and calculating relevant data from charging service companies, the metering performance of charging piles can be calculated. In this way, there is no need to install additional monitoring equipment or modify the existing structure of the charging pile. It solves the problems of difficult implementation and high cost caused by traditional online monitoring that requires the installation of a metering module inside the charging pile. At the same time, it is realized through online monitoring technology. Real-time monitoring of the economic operation of charging stations facilitates the daily operation, maintenance and management of charging piles. By allowing data to travel more, resource conservation and management efficiency improvement are achieved.

Careful verification, monitoring technology landing safely

In January 2023, the Hubei Provincial Market Supervision Administration organized State Grid Hubei Electric Power, Hete Laidian, IWC Digital, Tesla and other enterprises and relevant measurement technology institutions to carry out technical verification to further confirm that the big data accounting online monitoring technology can be used at different charging piles. The feasibility, reliability, and accuracy of running a business. After more than nine months of hard work, the relevant technology was initially confirmed to meet regulatory requirements. The relevant technical results were disclosed to the public in the form of local measurement technical specifications and are planned to be implemented from March 2024.

The person in charge of the Measurement Division of the Hubei Provincial Market Supervision Bureau said that the release-level implementation of the "Technical Specifications for Online Monitoring of Metering Performance of Public Charging Facilities for Electric Vehicles (Big Data Accounting Method)" marks the "statistical sampling + online monitoring + credit" standard for charging facilities in Hubei Province. "Evaluation" The research on smart metering supervision technology has achieved phased results. In the next stage, the Provincial Market Supervision Bureau will insist on scientific supervision and not relax, and promote the online monitoring and big data accounting of charging pile metering performance in a step-by-step and planned manner, so as to take effective measures to ensure the legality of consumers. Rights and interests provide strong support for the healthy and orderly development of the charging service market in Hubei Province.

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