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.

Detecting patterns of appliances from total load data using a dynamic programming approach

Abstract: Nonintrusive appliance load monitoring (NIALM) systems require sufficient accurate total load data to separate the load into its major appliances. The most available solutions separate the whole electric energy consumption based on the measurement of all three voltages and currents. Aside from the cost for special measuring devices, the intrusion into the local installation is the main problem for reaching a high market distribution. The use of standard digital electricity meters could avoid this problem but the loss of information of the measured data has to be compensated by more intelligent algorithms and implemented rules to disaggregate the total load trace of only the active power measurements. The paper presents a NIALM approach to analyse data, collected from a standard digital electricity meter. To disaggregate the consumption of the entire active power into its major electrical end uses, an algorithm consisting of clustering methods, a genetic algorithm and a dynamic programming approach is presented. The genetic algorithm is used to combine frequently occurring events to create hypothetical finite state machines to model detectable appliances. The time series of each finite state machine is optimized using a dynamic programming method similar to the viterbi algorithm.

Electric charge storage apparatus and method for an intelligent electronic device

Abstract: Power quality detection, monitoring, reporting, recording and communication in a revenue accuracy electrical power meter is disclosed. All recorded and computed data is moved to non-volatile storage via direct memory access transfer in the event that a power quality event jeopardizes the operating power of the meter. The meter provides a power supply utilizing high and low capacitive storage banks to supply sufficient energy to survive short duration power quality events which jeopardize the meter's operating power. The power supply also enables the meter to initiate and complete a shut-down routine allowing the storage of he recorded and computed data. Further, a separate power supply utilizing a capacitive storage bank is utilized to operate a communications device when the operating power is lost. The communications device switches from the meter power supply to the alternate capacitive storage bank when an power outage occurs and then initiates a connection with an external network to report the loss of operating power and send the appropriate power management data.

Consumer-sited power management system and method

Abstract: A system and method provide emergency back-up power for communications, security and other systems of an electric power consumer, and for peak-shifting of the electrical load so that electricity is generated and stored when demand is low, and the stored power is used when demand is high Embodiments include providing an electric power management device having a battery and a communication system at the premises of a consumer of electricity, and connecting the power management device to an electric power provider The battery is charged at an off-peak time when a demand for electricity is low, as determined by the electric power provider; and discharged to provide electricity to the consumer at a time when the demand for electricity is high, as determined by the electric power provider The charging and discharging is controlled by the electric power provider

Training and Racing with a Power Meter

Abstract: Training with power means that you are utilising the latest tool in the cycling industry today in order to maximize your athletic potential.With every crank of the pedals, power meters can bring about improved performance for both cyclists and triathletes. But understanding how to use the technology is key. Here's the first book to fully explore the benefits and methodology of power-based training. Step-by-step instructions explain how to incorporate power into regular training, identify strengths and weaknesses, track progress throughout the season, and peak for the most important races."Training & Racing with a Power Meter" is for all power meter users or those thinking about taking the plunge. It can help the advanced users better understand their current power data and delve deeper into the numbers, while new users will find out the steps to take in order to better use their power meter. And if you don't own a power meter yet, let "Training & Racing with a Power Meter" be your guide to the products available with recommendations, installation notes and clear directions on how to interpret the data they provide.Authors Allen and Coggan explode the myth that power meter training is too complicated for the average cyclist. This title includes a thorough guide to help cyclists find the right power meter to suit their goals. Comprehensive illustrations explain key concepts.

Optical sensor for utility meter

Abstract: A radio frequency automated meter reading (AMR) device for determining quantities of a consumed utility product including electric, gas and water service. The present invention intermittently transmits utility product consumption as a modulated RF signal, and does not require complex polling and bi-directional communication. Data is obtained and formatted for transmission and is adapted to be received by a remote receiving device having an RF receiver. The present invention is adaptable to water meters, gas meters and electric meters, and has an IR programming module facilitating remote programming and diagnostic procedures. In the case of water and gas meters, an internal lithium battery provides an operational life of up to ten years. In the case of the electric meter, power is tapped directly from the electric service.