Electricity meter

About: Electricity meter is a research topic. Over the lifetime, 7894 publications have been published within this topic receiving 42430 citations. The topic is also known as: electric meter & electrical meter.

Power supply testing system

Abstract: A system includes a plurality of power supply units to be tested, an electric load, a power meter, a multimeter, and a computer. Each of the plurality of power supply units has an input terminal connected to an AC power source via a switch module and an output terminal capable of outputting a plurality of power rails to an output bus via the switch module. The electric load is connected to the output bus for receiving the plurality of power rails. The power meter is configured for measuring an input power of each of the plurality of power supply units. The multimeter is configured for measuring an output power of each of the plurality of power supply units. The computer configured to calculate a conversion efficiency of each of the plurality of the power supply units.

The influence of nonsinusoidal supply voltage on the amount of power consumption and electricity meter readings

Abstract: During electricity generation, transformation, distribution and consumption, distortions of voltage and current sinusoidal signals occur. Most consumers are non-linear, and a significant content of higher harmonics emerges when they are connected to the supply grid. The algorithms of modern electricity meters take into account most of higher harmonics, whilst with some fallibilities. However, when supply voltage and current have the same amplitude and a various harmonic composition, the readings of electricity meters can vary greatly. This article describes how the harmonic composition of supply voltage and current affects the readings of electricity metering devices. The analysed ratios do not depend on the amplitude of supply voltage.

Residential building codes do save energy: evidence from hourly smart-meter data

Abstract: In 1978, California adopted building codes designed to reduce the energy used for temperature control. Using a rich dataset of hourly electricity consumption for 158, 112 houses in Sacramento, we e...

Real Time Monitoring of AMR Enabled Energy Meter for AMI in Smart City - An IoT Application

Abstract: Smart meters are promising towards increase in energy efficiency, but their installation needs significant infrastructure change, ranging from installation of new hardware units at individual households – a time consuming task, to creation of data servers to store the data available from these smart meters. The cost and time issue involved in this task has motivated us to devise a cost effective and portable hardware, capable of adding functionality of smart meters into traditional meters. This paper describes the method for measuring active power registered by traditional meters in real time. Considering the worst case as, cases when traditional meter registers less than 10 watt, the proposed system can provide its users with active power consumption data in 101.25 seconds as against monthly billing cycle of traditional meters. The proposed system uses LDR for sensing the frequency of LED present on the meter, which blinks at a frequency proportional to the active power registered by traditional meters. It also uses ESP8266-12e to compute the active power of load connected across traditional meter, from sensed value of blinking frequency of LED and store it in an online data server.

Integrated electric meter with var capability

Abstract: An integrated electric meter with VAR capability is disclosed. In one aspect, an electric meter (200) determines a plurality of power related parameters for an AC network, and a VAR generation unit (205) integrated with the electric meter (200) uses the plurality of power related parameters to inject a desired amount of reactive power in the AC network and correct power factor.