Electric Energy Metering

General Requirements for Electric Energy Metering

Before connecting to the grid, the metering points for on-grid electricity and grid-consumed electricity should be clearly defined. In principle, the metering point should be set at the grid connection point of the photovoltaic power station at the property boundary.

Each metering point shall be equipped with an electric energy metering device, with equipment configuration and technical requirements complying with DL/T448 "Technical Management Regulations for Electric Energy Metering Devices," as well as relevant standards and regulations.

Electric energy meters shall use static multifunctional meters, with technical performance meeting the requirements of GB/T 17883 "0.2S and 0.5S Class Static AC Active Energy Meters" and DL/T641 "Multifunctional Electric Energy Meters." The electric energy meter shall at least have bidirectional active and four-quadrant reactive metering functions, event recording function, be equipped with a standard communication interface, and have the capability for local communication and remote communication via an electric energy information acquisition terminal. The communication protocol of the electric energy meter shall comply with DL/T645 "Multifunctional Electric Energy Meter Communication Protocol." The collected information shall be connected to the electric energy information acquisition system of the grid dispatching organization.

For medium-sized photovoltaic power stations, the same metering point shall be equipped with one set each of main and auxiliary electric energy meters of the same model, specifications, and accuracy. The main and auxiliary meters shall be clearly marked.

The electric energy metering device shall be installed by the property owner of the photovoltaic power station before grid connection in accordance with requirements, and channel, protocol, and system debugging shall be carried out in conjunction with the electric energy information acquisition terminal and the master station system. A mutually recognized electric energy metering testing institution with corresponding qualifications shall complete relevant testing of the electric energy metering device, issue a complete testing report, and apply seals, stamps, or other sealing measures. Before the electric energy metering device is put into operation, a completion acceptance inspection shall be jointly carried out by the grid enterprise and the property owner of the photovoltaic power station.

Jiangsu Mangzhong Construction Co., Ltd. is a comprehensive energy service provider focused on the photovoltaic field, dedicated to being a smart energy enterprise involved in photovoltaic power station investment, development, design, construction, smart operation and maintenance, professional consulting services, and photovoltaic power station equipment recycling.

Company Name: Jiangsu Mangzhong Construction Co., Ltd.

Business Scope: Photovoltaic power station EPC and solar power station investment

Company Landline: 025-5888 3737   

Mobile Number: 159 5163 4545

Company Website: http://www.mangz.cn