By Shicai Xie
Zhejiang Prestige Electronic Co., Ltd is a leader in the development of electric meter components in China. In the relay area, the company possesses an experienced R&D team, with the technical principal a senior expert who has been involved in latching relay research for 45 years. In order to develop a latching relay that meets the requirement of the three phase electric meter with high performance and to solve the technical problems, Prestige Electronics invested significant capital in the world’s first modularised magnetic latching relay, along with reserved intellectual property rights. The project was strongly supported through the product development stage by a leading electric power meter manufacturer in China. The performance, reliability and security achieve the level U3 of the standard IEC62055-31, as tested by the Chinese authoritative laboratory certification organisation. Advantages of the product include:
By Lv Haitang and Lin Dusheng
The rapid development of modern electronics and network technologies is contributing to the continuous improvement of various AMR solutions, among which power line communication (PLC), RS 485, and radio frequency (RF) are the most commonly used technologies.
PLC was the first AMR technology applied in China. There are two main PLC technologies – spread spectrum communication (SSC) and orthogonal frequency division multiplexing (OFDM), of which SSC is the more widely used. The SSC16 series chips have been developed domestically based on SSC technology. The chips feature the following advantages:
[img:Sundar%20Rao.JPG| ]By Sundar Rao
To accomplish this task, many policy initiatives have been introduced by the government, particularly in the form of power reforms such as deregulation, The Electricity Act 2003, APDRP (Accelerated Power Development Reforms Programme), RGGY (Rajiv Gandhi Rural Electrification scheme). As per CEA (Central Electricity Authority) regulation 2006, all new meter installations must use electronic meters; electromechanical meters are only acceptable in the case of replacements.
Grinpal]Pretoria, South Africa and New Delhi, India --- (METERING.COM) --- May 29, 2008 - Saab Grintek's integrated energy supply subsidiary, Grinpal Energy Management, has started with the installation of the first smart meters in New Delhi, India. The first project began in Tata, where the company is targeting 500 000 installations by 2010. The company said the reason it took almost two years to begin meter installations is that they had to familiarize the Indian distributors with the PLC AMR/prepaid system.
The provisions of the Philippine’s Anti-Pilferage Act of 1994 allow electric distribution companies to use one percent of the power they purchase from generation companies, and to pass on the cost to consumers. Meralco points out that every business includes its electricity consumption as part of its operating expenses, which are passed on to customers, and believes this should be applied to Meralco too, even if its business is the provision of electric power.
The first is the DLMS OPC Server with DA 3.0 dupport with multi-channel and multi-device capabilities. The product is conformant to the latest version of OPC (V3.0).
The OPC Server supports the COSEM/HDLC profile for serial/optical channels (with Mode E switchover included), HDLC parameter negotiation, multi-mode addressing, two authentication levels, logical and short name referencing, LN and SN services, block transfer and selective access and more.
Energy theft is a recurring problem – in 2007 the distribution company said it had identified 80,000 cases, which did not include meter readings that were falsified with the assistance of utility employees. It points out that when energy is not paid for the company is not recovering its costs, and thus is unable to invest in new infrastructure, with regular power cuts the result.
The CGRF was established by India’s distribution companies in 2003 as a vehicle for responding to customer complaints. The latest figures cover the number of complaints received by the CGRF since it began operating in August 2004. While the complaints body has been successful in resolving a number of issues, it seems that energy customers are still convinced that the electronic meters installed to prevent tampering are not recording accurately.