Showing papers on "Electricity meter published in 2007"

Electric resource power meter in a power aggregation system for distributed electric resources

Abstract: Systems and methods are described for a power aggregation system. In one implementation, a service establishes individual Internet connections to numerous electric resources intermittently connected to the power grid, such as electric vehicles. The Internet connection may be made over the same wire that connects the resource to the power grid. The service optimizes power flows to suit the needs of each resource and each resource owner, while aggregating flows across numerous resources to suit the needs of the power grid. The service can bring vast numbers of electric vehicle batteries online as a new, dynamically aggregated power resource for the power grid. Electric vehicle owners can participate in an electricity trading economy regardless of where they plug into the power grid.

Cognitive electric power meter

Abstract: An electric power meter includes an embedded decomposition module that is configured to decompose a power meter signal into constituent loads to segregate and identify energy consumption associated with each individual energy consumption device within a plurality of energy consumption devices coupled to the power meter.

Micro power meter for energy monitoring of wireless sensor networks at scale

Abstract: We present SPOT, a scalable power observation tool that enables in situ measurement of nodal power and energy over a dynamic range exceeding four decades or a temporal resolution of microseconds. Using SPOT, every node in a sensor network can now be instrumented, providing unparalleled visibility into the dynamic power profile of applications and system software. Power metering at every node enables previously impossible empirical evaluation of low power designs at scale. The SPOT architecture and design meet challenges unique to wireless sensor networks and other low power systems, such as orders of magnitude difference in current draws between sleep and active states, short-duration power spikes during periods of brief activity, and the need for minimum perturbation of the system under observation.

Automatic power meter reading system using GSM network

Abstract: The development of a GSM automatic power meter reading (GAPMR) system is presented in this paper. The GAPMR system is consists of GSM digital power meters installed in every consumer unit and an electricity ebilling system at the energy provider side. The GSM digital power meter (GPM) is a single phase IEC61036 standard compliance digital kWh power meter with embedded GSM modem which utilize the GSM network to send its power usage reading using short messaging system (SMS) back to the energy provider wirelessly. At the power provider side an ebilling system is used to manage all received SMS meter reading, compute the billing cost, update the database, and to publish billing notification to its respective consumer through SMS, email, Web portal and printed postage mailing. A working prototype of the GAPMR system was build to demonstrate the effectiveness and efficiency of automatic meter reading, billing and notification through the use of GSM network.

Estimation by Software for the Power Consumption of Streaming-Media Servers

Abstract: The power consumption of a streaming-media server can be obtained in real time by using the virtual-instrumentation software described in this paper without using an additional hardware meter. We have built a model to estimate the power consumption from the observation of experimental data that consists of tracking the CPU utilization and detecting the operation parameters of the measured servers. When calculated in real time, the CPU utilization can respond to the dynamic change of the power consumption of the measured servers. The operation parameters represent the hardware configuration of the measured servers. We also propose three methods to obtain these parameters: filled- manually, hardware-revised, and software-revised parameter estimating. We have constructed the virtual-instrumentation software according to this power model to measure the power consumption of the streaming-media server. To facilitate the measurement process, we have also designed a suitable graphic-user interface for it. Our virtual-instrumentation software with three parameter-estimating methods has been tested by way of comparison with measurement results obtained by a power meter. The average power values of the hardware-revised method are found to yield mean errors of the estimate within 3%. The mean error of the software-revised method is within 6%. However, the filled- manually method may underestimate the power consumption by as much as 11%.

A Solution to Remote Detecting of Illegal Electricity Usage Based on Smart Metering

Abstract: Power line carrier communication presents new area for automatic meter reading, by equipped energy meter with power line system all user connect each other with this communication method, Smart metering uses all potential of this communication channel to presents new service in low voltage distribution grid, by installing smart meter detection system for detect illegal usage of electricity may be easily added to distribution network, in this method by sending test signal at high frequency in network, software calculates line impedance that connect each two energy meters, by comparing the data that related to installation time with other times data, system can find and locate place of illegal usage of electricity.

System and method for demand limiting resistive load management

Abstract: An electricity demand limiting system for limiting the electricity consumption of at least one resistive load device. The demand limiting system includes a consumption controller associated with the resistive load device that is operable to infinitely vary the amount of electricity being consumed by the load device. The consumption control device is in operative communication with a load controller such that the load controller can generate a control signal to affect the operation of the consumption control circuit. Preferably, the consumption control circuit is a triac-based circuit that receives the control signal from the load controller and limits the amount of electricity consumed by the resistive load device. The load controller can receive input signals from sensors monitoring the electricity delivery system or from the premise electricity meter. Further, the load controller can receive external inputs from a third party that determine the operation of the load controller in limiting the electricity demands of the resistive load device.

Intelligent fault detector system and method

Abstract: An electrical distribution system (EDS) wherein electrical current flows through a bus (B) to a feeder (R), and through the feeder to laterals (L1, L2). From the laterals, current flows through step-down transformers (T1-T4), each of which has an associated fuse (F3-F6) respectively. From each transformer, the current is routed to individual using sites (houses, office buildings, factories) each of which has an electrical meter with an associated transponder (Tr1-Tr8). The distribution system employs a TVVACS by which the meters are polled from a master station and distribution substation (DS) to send commands to, and receive responses from, each meter via its associated transponder. A quick response system is incorporated into the TW ACS for mapping an outage in the electrical distribution system without having to continuously poll the electrical meters connected to the system.

Advanced Metering Infrastructure based on Smart Meters

Abstract: By specifically designating penetrations rates of advanced meters and communication technologies, devices and systems, this paper introduces that the penetration of advanced metering is important for the future development of electric power system infrastructure. It examines the state of the technology and the economical benefits of advanced metering. One result of the survey is that advanced metering currently has a penetration of about six percent of total installed electric meters in the United States. Applications to the infrastructure differ by type of organization. Being integrated with emerging communication technologies, smart meters enable several kinds of features such as, not only automatic meter reading but also distribution management control, outage management, remote switching, etc.

Intelligent System for Collecting Readings From Electric Meters

Abstract: An intelligent system for collecting readings from electric meters, comprising the following components: several electric meters, a data concentrator connected to the electric meters, and a system main station connected to the concentrator wirelessly, in which: the electric meter for recording the consumed quantity of electricity by user, metering the quantity of electricity, measuring demand and making a fault recording, and supporting a time-sharing measurement and communication with the data concentrator by electric power carrier; a concentrator for providing intelligent relay management, implementing the communication with the electric meters and the system main station, the management of communication route of electric meters and the storage function of data; the system main station for realizing a stable bi-directional communication with the concentrator and several electric meters, reading data in the concentrator, collecting information on electric energy, synchronizing the time of the concentrator and the electric meters associated therewith, renewing time step tariff rate and meter parameters of the electric meters. Bi-directional stable communication between the main station and the intelligent electric meters and collection of electrical energy information and the adjustment of parameters of electric meters can be realized by transmission medium in the present invention. The system of the present invention features complete functions, stable user-friendly operation interface, and has good expansion potential. Therefore this system is an important technical means for user-side management. The present invention greatly improves management efficiency and economic benefits in the electrical power department.

Apparatus, system, and method for a high efficiency redundant power system

Abstract: An apparatus, system, and method are disclosed for a high efficiency redundant power system. First and second power supplies are connected in parallel to power a load. Each power supply includes a primary stage and a regulator stage. Each primary stage regulates voltage on an internal bus that is input for each regulator stage. Each regulator stage regulates a regulated bus connected to the load. A power meter detects power provided to the load and determines if the provided power is below a predefined power threshold. A regulator control module shuts down the regulator stage of the first power supply after the provided power falls below the predefined power threshold so the second power supply powers the load and the primary stage of the first power supply remains operational. A recovery module starts up the regulator stage of the first power supply after failure of the second power supply.

A remote intelligent meter writing method and remote intelligent meter writing system

Abstract: The invention belongs to a remote intelligent meter reading system field, is a remote intelligent meter reading system configured being used for remoter meter reading, bidirectional data transmission of an electrical meter, a water meter and an gas meter. Transmission of intelligent bidirectional data between a local end meter reading computer to a user terminal is realized by a new data transmission manner and via a common mobile communication network and low-voltage electric power carrier communication, so as to realize an object of remote controlling and user meter reading. Complementation can be performed between two communications of the common mobile communication network and the low-voltage electric power carrier communication, thereby realizing bidirectional transmission, conversion, transferring of different commnucation mode data. The remote intelligent meter reading system can directly read counting data of user's electric power meter, gas meter and water meter by the local end meter reading computer via a local area network composed of the common mobile communication network, an intelligent data collocting concentrator and the low-voltage electric power carrier communication, and peform remote control on the electric power meter, the gas meter and the water meter.

Metering assembly and customer load panel for power delivery

Abstract: Methods, systems, and apparatuses for alternate power delivery are provided. A metering assembly includes a power meter module. The power meter module includes a power control module and a power monitor. The power control module is coupled to a transfer switch that receives both primary power and alternate power. The transfer switch has an output coupled to an electrical circuit load. The power control module is configured to receive a request from the transfer switch for the alternate power to be supplied through the transfer switch to the electrical circuit load. The power control module is configured to enable the transfer switch to supply the alternate power to the electrical circuit load in response to the request. The power monitor is configured to determine an amount of the alternate power provided to the electrical circuit load. The power control module is configured to enable the alternate power to be decoupled from the electrical circuit load if the determined amount of the alternate power provided to the electrical circuit load is greater than a power trip setpoint. A plurality of metering assemblies may be provided to monitor a corresponding number of transfer switches coupled to electrical circuit loads in a facility.

Method and apparatus for monitoring a building

Abstract: The invention relates to a method in connection with electrical- energy measurement. According to the method the electrical energy consumption (1) of a building is measured, and the measured data are sent over telecommunications link (2) to the desired party. According to the invention RFID devices (3, 13, 15) are used to produce and read information on the building, an energy meter (1) and its telecommunications links (2) are used to forward the RFID-based building information.

Metering rf lan protocol and cell/node utilization and management

Abstract: The present technology relates to protocols relative to utility meters as sociated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infr astructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22/C12.19 system while e conomically supporting a 2-way mesh network solution in a wireless environme nt, such as for operating in a residential electricity meter field, all to p ermit cell-based adaptive insertion of C 12.22 meters within an open framewo rk. Cell isolation is provided through quasi-orthogonal sequences in a frequ ency hopping network. Additional features relate to real time clock distribu tion and recovery, uplink routing without requiring a routing table, and the handling of Beacon Requests and Registered State bit resolving to avoid cir cular routes. Features relating to cell or node utilization or management in a mesh network include cell size management, Number-of- sons' management, c rystal drift compensation in a mesh network, broadcast acknowledgement featu res, and Traffic Load Control in a Mesh NetworkOther features relate to Embe dded RF environmental evaluation tool features to gauge the performance need of RF transceivers, Downlink routing mechanisms, Outage notification system features, the use of minimal propagation delay path to optimize a mesh netw ork, and operation at the node level of a Discovery Phase in a frequency hop ping network.

Data recording and control system with wireless data transmission and electrical power distribution networks and method therefor

Abstract: Data acquisition and control system with data transmission over radio links and electrical power distribution networks and method comprising: At least one radio module (RF) connected to an antenna for connecting at least one remote module (RM) of a device or a consumption meter (VZ) equipped with a radio transmitter and / or radio receiver, € ¢ a control device in communication with the radio module (RF) with a program and data memory for temporarily storing the data supplied by the radio module (RF), € ¢ a communication module connected to the control device and a first coupling module connected thereto for transmitting the supplied data via power supply lines (L), and A communication gateway (G) which is connected to the power supply lines (L) via a communication module and a second coupling module connected thereto and which is arranged at the location of a summation electricity meter (SZ), so that the exchange of data between the remote module (RM) or consumption meter (VZ) with the communication gateway (G) takes place in the combined radio / powerline operation.

Switch to bypass optical diode for reducing power consumption of electrical meters

Abstract: The invention contemplates an electrical power meter and method of operating the electrical power meter. The inventive power meter includes a power supply for converting alternating current (AC) voltage to a direct current (DC) voltage for powering the electronic components, and an optical diode in series with the power supply. The meter may also include an optical communications port in communication with the optical diode and/or a switch (e.g., a transistor) in communication with the optical diode. The switch may be in parallel with the optical diode, and allow DC current to bypass the optical diode when a request for communication is received by the meter. The DC current provided to the optical diode represents communication of data with an optical communications port. The switch may be controlled by a microprocessor device.

Electrical device's i.e. commercial refrigerator, power consumption regulating apparatus, has control device controlling operation of commercial refrigerator based on information measured by monitoring units

Abstract: The apparatus has monitoring units (20, 20') that measure information regarding a load of a power supply system or a sub-unit of the power supply system. A control device controls an operation of a commercial refrigerator (10) based on the measured information. The units directly transmit the measured information to the control device. The units determine power consumption of the sub-unit using an electricity meter that is connected to the sub-unit. The units include a detector device that senses rotation of a rotating element of the meter. An independent claim is also included for a method for regulating power consumption of an electrical device.

High-voltage power meter correction device

Abstract: The utility model discloses a high voltage electric energy meter gauging device which comprises a low voltage current signal generating device whose output end is connected with a voltage booster and a current booster. The output ends of the voltage booster and the current booster are connected with a high voltage heavy current loop. The high voltage heavy current loop on which the gauged meter is working samples the high voltage heavy current signal to a standard electric energy meter at the lower voltage end using a high voltage current mutual inductor and a high voltage mutual inductor. The energy impulse outputted by the gauged meter is transmitted to a comparison gauging display device at the lower voltage end to compare with the high frequency gauging impulse of the standard electric power meter and compute the electric energy computation error. The high voltage electric energy meter gauging device achieves the integral measuring precision gauging of the high voltage measuring device which greatly improves the working efficiency.

Apparatus and method for metering contact integrity

Abstract: An arrangement for use in connection with an electricity meter includes an electricity meter housing and at least one connection between a first conductor and a second conductor carrying line voltage. The arrangement further includes a processing circuit that is configured to obtain a first voltage measurement within the meter housing on a first side of the at least one connection, and to obtain a second voltage measurement on a second side of the at least one connection. The processing circuit is further configured to determine a value corresponding to an impedance across the at least one connection.

Integrated energy metering system

Abstract: An integrated energy metering system having an energy meter including a voltage ADC for sensing voltage, a current ADC for sensing current, a microcontroller; a first memory device for storing program data for the energy meter; and a plurality of circuit blocks; a voltage monitor for monitoring a primary power supply; a power supply switch circuit for selectively applying one of the primary and auxiliary power supplies to the energy meter; and a system controller responsive to the voltage monitor for operating the switch circuit to apply the auxiliary power supply when the primary power supply voltage decreases below a predetermined level and gating the power to a first class of circuit blocks in the energy meter and applying power continuously to a second class of circuit blocks.

Electricity consumption and automatic billing through power line

Abstract: In every aspect of life, electronics plays a vital role. Though many technological innovations are taking place in this world, existing electricity consumption billing process seems in India to be very obsolete and does not meet the latest technology available. In this paper, the above said process is totally automated and the communication is made possible entirely through the power line. This communication is bi-directional at a faster data rate through long distances. By digitizing, the currently used analog energy meter has been completely transformed to a digital one. Hence it is beneficial to the customers as the system is made very user friendly.

Security device, monitoring system, and security state switching method

Abstract: PROBLEM TO BE SOLVED: To provide a security device, a monitoring system, and a security state switching method capable of switching security states, depending on the use/non-use of a room, without performing complicated operation. SOLUTION: In the security device for detecting abnormality for each of a plurality of security areas, an electricity meter part 101 measures electricity used every security area. An absence determining part 104 determines whether there is a person in the security area by comparing the measured electricity with a predetermined absence determining electricity. A security state switch part 106 switches the security state of the security, area from a security cancelation mode in which an alarm is not transmitted to a monitoring center, when abnormality is detected to an attention-calling mode, in which it is notified that abnormality is detected in the security area, when abnormality is detected. COPYRIGHT: (C)2009,JPO&INPIT

Power meter having fault tolerance

Abstract: A power meter having fault tolerance enhances the monitoring of electrical power by increasing the reliability of data output by the power meter having fault tolerance. The power meter having fault tolerance may enhance the monitoring process by transitioning from a faulty power monitoring device to a non-faulty power monitoring device without losing or corrupting power management data.

Single Phase Electricity Meter Based on Mixed-Signal Processor MSP430FE427 with PLC Modem

Abstract: An overview of single phase electronic electricity meter using the Texas Instruments mixed-signal processor MSP430FE42x with modem for communication via power line is given.

Power source management device

Abstract: PROBLEM TO BE SOLVED: To prevent power shortage by reducing power consumption in an image forming apparatus. SOLUTION: This power management device 20 receives information showing a power value from an power meter 30 connected through the Ethernet N, and when the power value is a low power state transition reference value A1 or more, the power management device 20 transmits a shift instruction to a low power state to an image forming apparatus 10a. When receiving the shift instruction to the low power state, the image forming apparatus 10a shifts each part of the image forming apparatus 10a to the low power state. Then, when the image forming apparatus 10a is put in the low power state, the power source management device 20 receives information showing a power value from the power meter 30, and when the power value is a normal state restoration reference value A2 or less, the power source management device 20 transmits the shift instruction to a normal state to the image forming apparatus 10a. When receiving the shift instruction to the normal state, the image forming apparatus 10a shifts each part of the image forming apparatus 10a to the normal power state. COPYRIGHT: (C)2008,JPO&INPIT

Modeling and Simulation of Secure Automatic Energy Meter Reading and Management Systems using Mobile Agents

Abstract: Summary The current energy saving technologies rely on conventional data logging systems, where the current methods in retrieving the energy data is not convenient, and the cost of the data logging systems is high. The Automatic energy Meter Reading (AMR) technology is network-based applications used by electric/energy companies to increase performance and reliability of their energy meter reading and management systems. A mobile agent is a program (code and data) that can autonomously migrate from host to host in a network of heterogeneous computer systems and fulfill a task specified by its owner. Intelligent and secure Automatic Meter Reading and Management using Mobile Agents can be of great importance for municipalities and energy distribution companies so as to minimize the number of traditional visits required by the distribution company, hence decreasing the number of employees used in performing this traditional time consuming and high cost work. In this work we will start by surveying the current technologies and techniques used in handling remote meter reading and management. New modeling and simulation results for different configurations and techniques of automatic energy meter reading and management systems using mobile agents will be presented and compared to traditional client server techniques.

Household network system and power consumption display method

Abstract: The invention relates to a home network system using digital TV-composed home network to reduce electric charge to the lowest by displaying and warning for its electric quantity and the electric quantity displaying method thereof. And the home network system comprises the parts of: power meter for monitoring electric quantity in the system; and a digital TV forming a network connection with the power meter, real-timely monitoring the electric quantity and display the electric quantity on user's demand. And the electric quantity displaying method comprises the steps of: using OSD menu to set electric quantity warning value; monitoring the electric quantity; when the electric quantity is greater than the electric quantity warning value, displaying warning prompting information.

Spinning cone water film power meter for high-power CO2 lasers

Abstract: A laser power meter based on water as an absorbing medium has been developed to measure multi-kilowatt CO2 laser power with high sensitivity and accuracy. Water absorbs CO2 laser radiation readily within a very thin layer. Though water has large thermal capacity, due to short absorption length, it could vapourize at high laser powers. In order to circumvent this problem, this power meter has a centre cone and a rapidly spinning water film as the calorimetric medium. The unique feature in this development is the centre cone, which diverges the beam and reduces the power density thus reduces the possibility of vapourization. This minimizes the error in measurements. Due to the rapidly moving fluid film, it exhibits fast response at low as well as high power levels.

Electronic electricity meter

Abstract: Electronic electricity meter with a microprocessor (14), a memory, a real time clock (18), a device (12) for measuring electrical energy, a display (20) and an interface (16) for reading out energy data and other data, the electricity meter having a further interface (26) which is connected via a transmission path with a temperature sensor (22), the processor comprises means for storage of temperature data in the memory at predetermined time intervals or as a function of registered in the processor events and link with the energy data.