JP2015078937A - Correcting accumulated power in utility meters - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide methods and systems for detecting and correcting accumulated power in utility meters.SOLUTION: A system includes a utility meter. The utility meter includes: a first sensor configured to detect an amount used, an amount generated, or a combination thereof of electric power; and a power detection and correction system configured to detect and correct an error in a measurement of an electrical voltage, an electrical current, or a combination thereof from the first sensor. The power detection and correction system includes a processor configured to execute a program stored in a memory of the utility meter.

Description

  The present invention relates generally to detection and correction, and more particularly to a method and system for detecting and correcting utility meter integrated power.

  Infrastructures such as smart grids include various systems and components with sensors. In the smart grid example, the system may include a power generation system, a power transmission system, a meter, a digital communication system, a control system, and their associated components. Some meters include various sensors. Unfortunately, the meter can record inaccurate power usage and power generation.

US Pat. No. 7,541,800

  An overview of certain embodiments having the same scope as the originally claimed invention is set forth below. These embodiments do not limit the scope of the claimed invention, and these embodiments are merely intended to provide an overview of possible forms of the invention. Indeed, the invention may encompass a variety of forms that may be similar to or different from the embodiments set forth below.

  In one embodiment, the system includes a utility meter. The utility meter detects and corrects a first sensor configured to detect power usage, power generation, or a combination thereof, and errors in voltage, current measurements or combinations thereof from the first sensor. A power detection and correction system configured to: The power detection and correction system includes a processor configured to execute a program stored in the memory of the utility meter.

  In a second embodiment, the system measures power, measures current, and uses power detection and power measurement configured to calculate power using the measured voltage and the measured current over a time interval. Includes a tangible machine readable medium containing correction instructions. The power detection and correction instructions determine whether the calculated power is being sent over a time interval, and if the calculated power is being sent over a time interval, the calculated power is the power received by the utility meter. It is comprised so that it may add to the total integration. The power detection and correction instructions determine whether the calculated power is received over a time interval, and if the calculated power is received over a time interval, the calculated power is the power received by the utility meter It is comprised so that it may subtract from total sum total.

  In a third embodiment, the method includes detecting errors associated with voltage, current measurements, or combinations thereof from utility meter sensors. The sensor is configured to provide an indication of power usage used by the end user, power generation generated by the end user, or a combination thereof.

  These and other features, aspects and advantages of the present invention will become better understood when the following detailed description is read in conjunction with the accompanying drawings in which like reference characters represent like parts throughout the drawings, wherein: .

1 is a block diagram of an embodiment of an intelligent power generation, power transmission and distribution infrastructure (eg, smart grid infrastructure) system. FIG. 2 is a schematic diagram of an embodiment of a power detection and correction meter system included in the system of FIG. FIG. 3 is a diagram of voltage, current and power output of the power detection and correction meter system of FIG. 2 according to an embodiment. FIG. 3 is a diagram of voltage, current, zero-crossing shift between voltage and current, and power output of the power detection and correction meter system of FIG. FIG. 3 is a flowchart of an embodiment of a process suitable for detecting and correcting power accumulation in the power detection and correction meter system of FIG.

  One or more specific embodiments of the present invention are described below. In an effort to provide a detailed description of these embodiments, not all features of an actual implementation are described herein. In the development of such an actual implementation, as with any technology or design project, many implementation-specific decisions have developer-specific objectives such as compliance with system-related and business-related constraints that can vary from implementation to implementation. It should be understood that it must be done to achieve. Further, although such development efforts can be complex and time consuming, it should be understood that those skilled in the art having the benefit of this disclosure will be routine tasks of design, fabrication and manufacture.

  When introducing elements of various embodiments of the present invention, the articles “a”, “an”, “the”, and “said” mean that one or more elements are present. . The terms “comprising”, “including” and “having” are inclusive and mean that there may be additional elements other than the listed elements.

  Certain infrastructures, such as electrical smart grids, can include a variety of interconnected systems and components. For example, a smart grid can include a power generation system, a power transmission and distribution system, a metering system, a digital communication system, a control system, and their associated components. Smart meters include many functions related to the consumption of utilities such as water, electricity and gas. For example, smart meters allow utility operators, such as electric utilities, to remotely monitor consumer utility usage. Smart meters can also include a number of sensors to detect and measure the amount of power used or generated by the consumer. However, if the alternating current (AC) signal is offset by the direct current (DC) component of the AC signal, the shift or deformation of the consumed and / or generated power will be manifested by the physical response of the sensor. As a result, inaccurate integration of power consumption or power generation may occur. For example, the consumer may not be charged by the utility for the exact amount of power used, and similarly, the consumer may not be credited by the utility for the exact amount of power generated.

  This embodiment includes detection and correction of power integration measured and recorded by a smart meter. Described herein by detecting, recording and calculating the absolute value of power sent to or received by a consumer or other load over a given time interval and summing the total total power. The system and method allows a smart meter to calculate and measure the power used or generated over a time interval as a positive value and to accurately accumulate the power sent to or received by consumers or other loads. You can be sure to get. As will be further appreciated, the techniques described herein can be incorporated into existing smart meters without adding (or removing) hardware components.

  In view of the above, it may be useful to describe an infrastructure embodiment such as the exemplary smart grid system 10 shown in FIG. As shown, the smart grid system 10 can include one or more utilities 12. The utility 12 can perform a monitoring operation of the smart grid system 10. For example, the utility control center 14 can monitor and direct the power produced by one or more power plants 16 and AC power plants 18. The power plant 16 may include a conventional power plant such as a power plant that uses gas, coal, biomass, and other carbon products for fuel. The AC power plant 18 may include a power plant, such as a power plant that uses solar, wind, hydropower, geothermal, and other alternative power generation sources (eg, renewable energy) that produce electricity. Other infrastructure components can include a hydroelectric power plant 20 and a geothermal power plant 22. For example, the hydroelectric power plant 20 can provide hydroelectric power generation, and the geothermal power plant 22 can provide geothermal power generation.

  The power generated by the power plants 16, 18, 20 and 22 can be sent through the power grid 24. The power grid 24 may cover a wide range of one or more regions, such as one or more municipalities, states or countries. The power grid 24 can be a single phase alternating current (AC) system, but most commonly can be a three phase AC current system. As shown, the power grid 24 can include a series of towers that support a series of overhead electrical conductors of various configurations. For example, ultra high voltage (EHV) conductors can be placed in three conductor bundles with conductors in each of the three phases. The power grid 24 can support a nominal system voltage of 110 kilovolts (kV) to 765 kilovolts (kV). In the illustrated embodiment, the power grid 24 can be electrically connected to the distribution substation 26. Distribution substation 26 changes the voltage of incoming power from transmission voltage (eg, 765 kV, 500 kV, 345 kV or 138 kV) to primary (eg, 13.8 kV or 4160 V) and secondary (eg, 480 V, 230 V, or 120 V). A transformer can be included that transforms to the distribution voltage. For example, industrial power consumers (eg, manufacturing plants) can use a primary distribution voltage of 13.8 kV, and power delivered to commercial and residential consumers should be a secondary distribution voltage in the range of 120V to 480V. Can do.

  As shown in FIG. 1, the power transmission network 24 and the distribution substation 26 can be part of the smart grid system 10. Thus, the power grid 24 and distribution substation 26 can include a variety of digital and automated technologies that control power electronics equipment such as generators, switches, circuit breakers, and polymerizers. The power grid 24 and distribution substation 26 may also include various communication, monitoring and recording devices such as, for example, programmable logic controllers (PLCs) and electrical fault detection and protection relays. For example, during stormy weather, the protective relay of distribution substation 26 can detect an electrical fault downstream of the substation and the circuit breaker can be operated to eliminate the fault and restore power. In some embodiments, power grid 24 and distribution substation 26 may also communicate data such as changes in electrical load demand for power correction and detection metering system 30.

  The power correction and detection metering system 30 may be an advanced metering infrastructure (AMI) meter used to measure, collect and analyze electricity, water and / or gas usage. The metering system 30 can be communicatively connected to one or more components of the smart grid 10 including the power grid 24 and the distribution substation 26. In addition, the metering system 30 can enable two-way communication between the commercial facility 32, the residence 34, and the utility control center 14, and consumer behavior and utility consumption (eg, electricity, water and / or gas consumption). Provide a link between) For example, the metering system 30 can track and account for prepaid electricity, water and / or gas in a manner similar to prepaid cell phone usage. Similarly, utility consumers 32 and 34 can benefit from lower utility costs, for example, by optimizing utility usage by utilizing lower fees during low demand hours. Washers / dryers, electric vehicle chargers, and other flexible power consuming products can be programmed to operate during low demand hours, thereby lowering utility bills and energy usage. It will be more balanced. In certain embodiments, the metering system 30 can include systems of electrical and electronic components such as, for example, displays, processors, memory devices, sensors, bus bars, conductive wires and batteries. The metering system 30 is configured to provide apparent power (kVA), active power (ie, total power consumed by a resistive component of a given load over a time interval) (kW) and reactive power (ie, over a given time interval). It will also be appreciated that the power consumed by the reactive component of the load (kVar) can be measured, monitored, stored and displayed as the product of power and time. For example, an electrical utility can report usage per kilowatt hour (kWh) to consumers for billing. The metering system 30 can also be powered via, for example, a 120 VAC power source or a battery power source. The metering system 30 will be described in greater detail with respect to FIG. 2, but may include certain systems suitable for detecting and correcting inaccurate recorded sums of power recorded by the metering system 30. . For example, negative power can be detected and corrected more easily.

  Reference is now made to FIG. 2, which is a schematic diagram of an embodiment of a power detection metering system 30. The metering system 30 may be included in the metering system 30 that may further include monitoring and communication functions, as described above. The metering system 30 can be a single phase or a multiphase system. As shown, the metering system 30 can include a display 42 that is communicatively connected to the electronic board 44 to display electricity consumption and power generation in recorded time intervals or in real time. For example, the display 42 may have active power in watt hours or kilowatt hours (eg, Wh or kWh), reactive power in bar hours or kilobar hours (eg, Varh or kVarh), current in amps (A), volts (V). It may be a liquid crystal display (LCD) that displays parameters such as voltage, or some combination thereof. Display 42 displays the power sent from utility 12 to consumers 32, 34 (eg, apparent, enabled and disabled), and the power generated by consumers 32, 34 and sent to grids 24, 26 You can also. For example, consumers 32, 34 interconnect distributed power source (DG) resources (eg, solar panels or wind turbines) to generate and transmit power to distribution substations and distribution network 26. Can do.

  In certain embodiments, the electronic board 44 may further include a processor 46 and / or other data processing and sensing that can be operatively connected to the memory 48 to execute instructions for implementing the presently disclosed techniques. Circuitry can be included. These instructions may be encoded with a program or code stored in a tangible non-transitory computer readable medium such as memory 48 and / or other storage device. The processor 46 may be a general purpose processor, a system on chip (SoC) device, or some other processor configuration. The electronic board 44 can further include measurement circuits, analog front end (AFE) circuits, voltage reference circuits, real time clocks, data converters, and similar electronic circuits and architectures. In an embodiment, the processor 46 and memory 48 of the electronic board 44 process and record data received from the bus bar 58 and the current sensors 60 of the source and load side hot and neutral wires 62, 64, 66 and 68. Can be saved. For example, the processor 46 and memory 48 of the electronic board 44 may sample single phase or multiphase current (A), voltage (V), apparent power (eg, VA or kVA), active power (eg, time interval or real time). For example, W or kW), reactive power (eg, Var or kVar) and power factor data can be calculated or processed and the data reported to the consumer or utility. The processor 46 and memory 48 of the electronic board 44 may also support a number of embedded software and firmware applications and systems. For example, in certain embodiments, processor 46 and memory 48 may support instrumentation, emulator, and sensing scheme applications and systems. Measurement circuits and applications supported by the electronic board 44 are stored in non-transitory machine readable media (eg, memory 48), read and analyze analog or digital current or voltage inputs, and power used or generated May include code or instructions that are used to determine whether the metering system 30 has measured the exact amount of. In one embodiment, the instructions can be flash updated to the electronic board 44 (eg, transmitted by an Ethernet cable, near field communication (NFC) and similar wired and / or wireless communication methods). The metering system 30 does not require additional hardware components.

  Further, the electronic board 44 of the metering system 30 may include a sensor input header 50 that is communicatively connected to the processor 46 and the memory 48. In certain embodiments, the metering system 30 can also include one or more current sensors 60. The current sensor 60 can be electrically and / or communicably connected to the bus bar 58, and each of the current sensor 60 and the bus bar 58 can be housed inside the base 56. The bus bar 58 may be a bar or strip of conductive material (eg, copper, aluminum, or other metals and metal alloys) for connecting the distribution substation 26 to the end user via the metering system 30.

  In some embodiments, the power sensor 60 is optional to output a signal (eg, AC / DC voltage or current) that is proportional to the detected current flowing through the electrically and / or communicatively connected bus bar 58. Device. For example, the metering system 30 can be a 120 VAC residential power meter. The current sensor 60 can continuously monitor the current flowing through the bus bar 58 to detect events such as, for example, power outages, electrical failures, and current reduction due to load changes. The current sensor 60 can then output a signal proportional to the detected current flowing through the bus bar 58 to the electronic board 44 where the current data is communicated to the consumer 32, 34 or the utility 12. Judgment is made. The current sensor 60 can include primary and secondary windings and can generate a current or voltage at the secondary winding that is proportional to the load current or line current flowing through the primary winding. Thus, in one embodiment, the current sensor 60 can be a current transformer (CT). In such an embodiment, the current sensor 60 can include a magnetic core, and the primary winding of the current sensor 60 is in electrical and / or communication communication with the live and neutral wires 62 and 64 and the bus bar 58. The secondary winding can be electrically and / or communicably connected to the electronic board 44 via the electrical lead 54 and the sensor input header 50. For example, the current sensor 60 can measure load currents in the primary winding from a few amps (A) to a few kiloamps (kA) and for sensing and processing from a few milliamps (mA) to a few hundred milliamps (mA). ) Current can be generated in the secondary winding. In another embodiment, current sensor 60 includes a load resistor or other resistive component (eg, shunt resistor) that can be used to measure the output voltage on the secondary side of current sensor 60. Can do.

  As described above, the current sensor 60 can be electrically connected to the current sensor 60 at the first end and the electrical lead 54 that can be electrically connected to the sensor input head 50 at the opposite end. Can also be included. The electrical leads 54 can include power leads, neutral or ground electrical leads, data transmit / receive electrical leads, or any combination thereof. In some embodiments, the electrical leads 54 can be color coded to correspond to the function of the leads. For example, red and black can correspond to power and neutral leads, respectively, and white, blue, or green can correspond to, for example, data transmission leads. The lead 54 may further enable the current sensor 60 to output a signal (eg, a DC voltage) to the electronic board 44 that is proportional to the measured AC current of the bus bar 58.

  As described above, the metering system 30 can also include a sensor input header 50. In certain embodiments, the sensor input header 50 can be electrically and / or communicatively connected to the current sensor 60 via an electrical lead 54 at one end and electrically and / or to the electronic board 44 at the opposite end. Or it can connect so that communication is possible. Input header 50 may include analog inputs, discrete inputs, digital inputs, or some combination thereof. In certain embodiments, the sensor input header 50 can be configured as part of the power integration detection and correction mechanism of the metering system 30.

  In certain embodiments, the processor 46 within the metering system 30 may perform a series of calculations to determine the amount of power measured by the metering system 30. For example, the processor 46 can sample, process, and store the nominal voltage (eg, 120 VAC) of the bus bar 58 in the memory 48, where the nominal voltage is a sampled value of the detected AC current of the bus bar 58. The power value can be obtained by multiplying. Further, the processor 46 may, for example, have single phase or three phase instantaneous (eg, time variation) or average (eg, square root [RMS]) voltage, current, valid, reactive and apparent current, power factor angle (eg, voltage and The angle between the current and the like can be calculated and measured. As stated above, power (eg, valid or invalid) is at least nominal line voltage or load voltage (eg, V or kV), line current or load current detected by current sensor 60 (eg, A or by multiplying by kA) to generate power (eg, W, kW, Var and kVar).

  In certain embodiments, voltages and currents measured or sampled by the processor 46 of the metering system 30 can be displayed or analyzed as waveform diagrams. As shown in FIG. 3, the waveform diagram can include a positive and negative value magnitude range 74 and a zero magnitude axis or both positive and negative value time range 76. In particular, the waveform diagram can include a voltage output 78 (eg, voltage), a current output 80 (eg, current) and a power 82 (eg, power), as shown in FIG. The voltage output 78 measured by the metering system 30 can be a constant AC voltage. For example, as noted above, the metering system 30 can be a residential or commercial power meter, in which case the voltage output 78 can be a constant 120 VAC or 230 VAC, respectively. Similarly, the current output 80 can be an AC current. However, the current output 80 may or may not be constant because the current output 80 may depend on the connected load demand, such as a commercial facility 32 or a residence 34. As will be described in more detail below, in some embodiments, current output 80 may be an asymmetric current, and current output 80 may include instantaneous AC current (ie, symmetric or steady state sinusoidal current) components and DC offset ( That is, it can include an exponential decaying current component.

  The power 82 (eg, power) is the product of the voltage output 78 and the current output 80. For example, the power 82 can be an active power value (eg, Wh or kWh) supplied to a load such as the commercial facility 32 or the house 34. Thus, power 82 is often the case when voltage output 78 (eg, voltage) and current output 80 (eg, current) are theoretically in phase with each other and cross at zero crossing 83 at substantially the same time. A positive value diagram can be represented. However, as will be appreciated, in some embodiments, the influence of the DC current may advance and begin to distort the current output 80, and negative power 82, as shown with respect to point 82 of power 82 in FIG. (For example, the product of the voltage output 78 and the current output 80). In such cases, the metering system 30 may measure inaccurate and inaccurate power accumulation, leading to incorrect billing of consumer power usage or incorrect crediting of consumer power generation by utilities. Thus, the waveform diagram of FIG. 3 represents a logical view of voltage output 78 (eg, voltage), current output 80 (eg, current) and power 82 (eg, power) as the product of voltage and current. I want you to understand.

  More generally, the current output 80 (eg, current) can be an asymmetric current that can include a symmetric instantaneous current component and a DC offset current component. As shown in FIG. 4, due to the influence of the DC offset current component of current output 80, a shift 84 may occur at the zero crossing between voltage output 78 and current output 80 (eg, zero crossing 83 in FIG. 3). . Due to the shift 84, the power 82 or the product of the voltage output 78 and the current output 80 may also constitute a negative value. More specifically, the effect of DC on current output 80 may cause distortion of current output 80, which may cause processor 46 to calculate a negative value for power 82. For example, as illustrated with respect to point 82 for power 82 (eg, power), power 82 moves into the negative range of magnitude range 74. Without power integration correction, when the processor 46 of the metering system 30 samples and sums the voltage output 78 and the current output 80, it calculates or sums the positive value of the power 82 up to point 86, but then the processor. 46 may sum up inaccurate (eg, negative) values of power output 82. Also, without power integration correction, this allows the consumer to consume at least some power, possibly without cost, or if the consumer can generate power, it is generated, eg, the power grids 24, 26. You may not get paid for the power transmitted to

  Referring now to FIG. 5, a flowchart illustrating an embodiment of a process 100 useful for detecting and correcting the power 82 of the metering system 30 shown in FIG. For illustration purposes, the process 100 will be described with respect to FIGS. Process 100 may include code or instructions stored in a non-transitory machine readable medium (eg, memory 48) and executed by processor 46, for example. The processor 46 of the metering system 30 may perform the process 100 shown in FIG. 5 continuously or periodically so as to constantly monitor and correct the accumulated power recorded by the metering system 30. For example, the processor 46 of the metering system 30 may perform the process 100 periodically under normal operating conditions (eg, power service is consumed or generated as authorized), while the utility 12 or The process 100 can be performed continuously or periodically even during times when power usage is limited by the consumers 32, 34. The code and / or instructions can be flash updated into the memory 48 and executed by the processor 46, and the metering system 30 does not require additional hardware components to implement the techniques of this disclosure. It should also be understood that

  The process 100 begins with the processor 46 of the metering system 30 (block 102 of FIG. 5) and the nominal voltage (eg, voltage output 78 of FIG. 4) and current (eg, current output of FIG. 4) detected by the current sensor 60. 80) can be summed (block 104 in FIG. 5), active power in watt hours (Wh) or kilowatt hours (kWh) and reactive power in bar hours (Varh) or kilobar hours (kVarh) For example, approximately 1, 2, 5, 10, 15, 30, 45, 60, 120, 230 minutes periods or intervals. For example, as explained above, the electrical utility records and stores the power consumed by the metering system 30 in a residential, commercial, industrial or other facility for 60 minutes for proper billing purposes. So that it can be programmed. However, it should be understood that the metering system 30 can be configured to measure active and reactive power at any time interval. As described above, the processor 46 of the metering system 30 determines the amount of power measured over a time interval and stores the absolute value of the measured power, for example, in the memory 48 of the metering system 30. A series of calculations can be performed, summing up to the total accumulated power that can be.

  In one embodiment, the processor 46 of the metering system 30 calculates and sums the absolute value of the measured power (eg, power 82 of FIG. 4) by performing the sign absolute value method (block 104 of FIG. 5). )be able to. For example, the processor 46 may use positive and negative values of the sampled power 82 as the leftmost (eg, most significant bit [MSB]) bit of the sampled power value as a sign (eg, positive or negative) bit. By assigning, it can be encoded. That is, for example, if the leftmost bit or MSB is 0, the value of the measured and sampled power 82 can be positive. Similarly, for example, if the leftmost bit or MSB is 1, the value of the measured and sampled power 82 can be negative. The remaining bits can represent the absolute value of the sampled power 82 value. Thus, to ensure that only the absolute values of the sampled values of power 82 in FIG. 4 are summed, processor 46 positively converts any negative sampled values (eg, values having 1 as the MSB) to positive. (For example, a value having 0 as the MSB). It will also be appreciated that the processor 46 may also perform one's complement and two's complement, binary-coded decimal, among other techniques for representing positive and negative values of the sampled power output 82.

  The processor 46 determines whether the sampled power can be supplied power (eg, power supplied to be consumed by the consumers 32, 34) over some time interval (eg, 60 minutes). Can be determined (decision 106 in FIG. 5). If the sampled power is actually supplied power, the processor 46 adds the sampled power for a given time interval to the total accumulated power (block 108 in FIG. 5), thereby accumulating. Accurate and proper measurements of the measured power are recorded and reported to, for example, a utility or consumer (eg, utility control center 14 and / or consumers 32 and 34). On the other hand, if the sampled power is not actually supplied power, the processor 46 may determine whether the sampled power is transmitted to the received power (e.g., to the distribution network 26 by the consumers 32, 34). It is possible to determine whether or not the generated power) (decision 110 in FIG. 5). Thus, if sampled power is received, the processor 46 can subtract the sampled power from the total accumulated power over a given time interval (block 112 in FIG. 5), as well as the accumulated power. Accurate and correct measurements are reported to, for example, utilities (eg, utility control center 14) or consumers (eg, consumers 32 and 34). As explained above, the process 100 can be repeated at a number of time intervals.

  The technical effects of the present invention include detection and correction of power integration measured and recorded by a smart meter. Described herein by detecting, recording and calculating the absolute value of power sent to or received by a consumer or other load over a given time interval and summing the total total power. The system and method allows a smart meter to calculate and measure the power used or generated over a time interval as a positive value and to accurately accumulate the power sent to or received by consumers or other loads. So that you can be sure to get.

  This written description uses examples to disclose the invention, including the best mode, and to enable any person skilled in the art to practice the invention, including the use of the device or system and implementation of the incorporated methods. . The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. If such other embodiments include elements that are the same as the literal terms of the claims, or that include elements that differ only slightly from the literal terms of the claims, the claims Contained within.

12 Utility 14 Utility Control Center 16 Power Plant 18 AC Power Plant 20 Hydroelectric Power Plant 22 Geothermal Power Plant 24 Power Transmission Network 26 Distribution Substation 30 Weighing System 32 Commercial Facility 34 Residential 42 Display 44 Electronic Board 46 Processor 48 Memory 50 Sensor Input Header 54 Electrical lead 56 Base 58 Bus bar 60 Current sensor 62 Source side live wire 64 Source side neutral wire 66 Load side live wire 68 Load side neutral wire 78 Voltage output 80 Current output 82 Power 83 Zero crossing 84 Shift 86 Points 100 Process 102 Block 104 block 106 decision 108 block 110 decision 112 block

Claims (20)

A first sensor configured to detect power usage, power generation, or a combination thereof;
A system including a utility meter including a power detection and correction system configured to detect and correct errors in voltage, current measurements or combinations thereof from the first sensor, the power detection and correction system A system that includes a processor configured to execute a program stored in the memory of a utility meter. The system of claim 1, wherein the error comprises a measurement of a DC offset component of the current. The system of claim 1, wherein the error includes calculation of a negative power value. The system of claim 1, wherein the first sensor comprises a current transformer. The system of claim 1, wherein the first sensor is configured to provide an indication of power usage used by an end user. The system of claim 1, wherein the first sensor is configured to provide an indication of power generated by an end user. The system of claim 1, wherein the power detection and correction system includes an electronic board that includes a processor and a memory, the memory configured to be flash updated with instructions to detect and correct the error. The power detection and correction system is configured to integrate the power usage, power generation, or a combination thereof over a time interval using the voltage and current measurements. Item 1. The system according to Item 1. The system of claim 8, wherein the power detection and correction system is configured to calculate an absolute value of the power accumulation. A second sensor configured to detect the amount of power used, the amount of power generation, or a combination thereof, wherein the first sensor is configured to detect a first current of a first phase. The second sensor is configured to detect a second current in a second phase different from the first phase, and the power detection and correction system includes a measurement of the first current in the first phase and The system of claim 1, configured to detect and correct an error in a second phase second current measurement. The system of claim 1, wherein the utility meter comprises an advanced metering infrastructure (AMI) smart meter. Measure the voltage,
Measure the current
Calculate power using measured voltage and measured current over a time interval,
It is determined whether the calculated power is being sent over a time interval, and if the calculated power is being sent over a time interval, the calculated power is added to the total power received by the utility meter. Add,
Determine whether the calculated power is received over a time interval, and if the calculated power is received over a time interval, calculate the calculated power from the total power received by the utility meter. A system comprising a tangible machine-readable medium configured to subtract and including power detection and correction instructions. The system of claim 12, wherein the utility meter includes a smart power meter that includes a tangible machine readable medium configured to store the power detection and correction instructions. The power detection and correction instructions include instructions configured to calculate the power by summing one or more products of a measured voltage and a measured current over a time interval. 12. The system according to 12. The system of claim 12, wherein the power detection and correction command includes a command to calculate the power by calculating an absolute value of the calculated power. The system of claim 15, wherein the instruction to calculate an absolute value of the calculated power includes an instruction to adjust a most significant bit (MSB) of the calculated power to reflect a positive value. A command for adding the calculated power to a total sum of power received by the utility meter, and the calculated power so that the power detection and correction command corrects the error of the calculated power; The system of claim 12, comprising instructions for subtracting from a total sum of power received by the utility meter, or a combination thereof. Detecting an error associated with a measurement of voltage, current, or a combination thereof generated by a utility meter sensor, wherein the sensor uses power consumed by the end user, generated by the end user Steps configured to provide an indication of power generation, and combinations thereof;
Correcting the error by generating an actual power usage or power generation value. The method of claim 18, comprising summing absolute values of one or more products of voltage and measured current measured over a time interval to correct the error. Adding the power usage to the total power received by the utility meter to correct the error; and subtracting the power generation from the total power received by the utility meter; The method of claim 18 comprising: