J&D brings you its new brand ‘1AM’ or first advanced metering system, with a compact CT-integrated smart meter flexible enough to accommodate various communication methods.
Leading global electric companies face many issues as they build smart grid systems for their customers. It is required that they use smart meters, which feature advanced metering technology along with the flexibility of various communication methods. New regulations, in addition to the current electricity metering standards, are inevitable in order to have more effective smart grids. Therefore, many countries are working to improve the rules and regulations regarding the specification and standards of electric metering. For instance, Korea Electric Power Corporation (KEPCO) and the smart meter certification organization in Korea are working together to add new standards for smart grid technology to the existing electric metering standards.
In order to drive the transition forward, J&D is releasing an innovative smart metering system. Instead of trying to integrate a CT inside of meter, J&D has done the opposite, integrating a complete smart meter into a split-core CT. Together with the external wireless gateway converter modular (GCM), this new system simplifies the job of next-generation electric power companies.
CSSM – Current Sensor Smart Meter
CSSM stands for “Current Sensor Smart Meter”. It is a split-core CT with an entire smart meter inside. In addition, it allows the electric company to specify the communication method via the Gateway-Converter Module (GCM).
The CSSM is available in a wide range of amperage ratings from 5A to 400A upon request and can be connected up to 32 single phases using RS485. It uses the DLMS protocol over RS485 communication. The CSSM receives the voltage data from the GCM via RS485 and adds the voltage data to the current data measured directly by the CSSM to calculate the energy consumption (Watt-hours) in real time. Via two-way communication technology, the measured data is transmitted to the GCM, which communicates with the host system through its built-in wireless communication module. The most outstanding function is that multiple CSSMs could transmit all the measured data at once to a single GCM via a RS485 connection.
In addition, since the CSSM is a split-core CT, it enables fast and easy installation without cutting the existing power lines. Furthermore, the CSSM has a compact design, which makes it possible to install it in cramped spaces or within existing distribution boards.
GCM – Wireless Gateway-converter module with high flexibility for communication
GCM does not only support LTE wireless communication, but also offers various communication options including: LoRa, Modbus, Wi-SUN, ZIGBEE, RF-MESH, PLC and GPRS, which can be installed upon request. Moreover, because it uses an open protocol, it can be integrated alongside other communication methods already in place. GCM has been drawing customer attention with its user-friendly features such as wide communication options and open protocol support.
Consequently, electric power companies using CSSM and GCM will be able to save time and cost when installing and implementing smart metering systems. In addition to energy bill calculations, it performs highly accurate and effective monitoring, based on the real-time energy consumption data transmitted by wireless communication. These advantages make it an excellent solution for setting up next-generation smart grids.
At European Utility Week 2017 in Amsterdam from October 03-05, J&D will showcase the latest technologies for Smart Grid and Smart Cities. please come to visit our booth (#1k7)