CN109443395B - Method and system for judging whether energy consumption intensity multipoint measurement difference value exceeds limit value - Google Patents

Method and system for judging whether energy consumption intensity multipoint measurement difference value exceeds limit value Download PDF

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Publication number
CN109443395B
CN109443395B CN201811087929.7A CN201811087929A CN109443395B CN 109443395 B CN109443395 B CN 109443395B CN 201811087929 A CN201811087929 A CN 201811087929A CN 109443395 B CN109443395 B CN 109443395B
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energy
value
intensity
metering
meter
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CN109443395A (en
Inventor
郑国权
卢继哲
刘宣
唐悦
阿辽沙·叶
张海龙
窦健
郑安刚
夏水斌
余鹤
唐登平
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Hubei Electric Power Co Ltd
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Hubei Electric Power Co Ltd
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D4/00Tariff metering apparatus
    • G01D4/10Maximum indicating or recording apparatus, i.e. where the tariff for a period is based on a maximum demand within that period
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/56Special tariff meters
    • G01R11/63Over-consumption meters, e.g. measuring consumption while a predetermined level of power is exceeded

Abstract

The invention discloses a method and a system for judging whether an energy consumption intensity multipoint measurement difference value exceeds a limit value, wherein the method comprises the following steps: acquiring energy consumption intensity data of the current daily energy side metering equipment and energy consumption intensity data of energy supply side metering equipment corresponding to the energy consumption intensity data by an energy metering management system master station; confirming whether the energy supply flow value of the energy-side metering equipment on the current day is in a preset interval or not; if not, calculating the current daily energy intensity error value of the user; comparing the error value of the current user day energy intensity with a preset error threshold value, and determining whether the current user side energy intensity exceeds a limit value; the method and the system analyze whether the metering equipment is in a normal working state and whether the possibility of abnormal energy utilization exists in a user according to the energy utilization intensity comparison results of 2 different metering equipment on the same energy transmission line.

Description

Method and system for judging whether energy consumption intensity multipoint measurement difference value exceeds limit value
Technical Field
The invention relates to the technical field of electric power, in particular to a method and a system for judging whether an energy intensity multipoint metering difference value exceeds a limit value.
Background
The construction of an electricity, gas and heat energy metering management system is developed in China, and hundreds of thousands of users are covered in an accumulated manner. Along with the enlargement of the system scale, the operation and maintenance difficulty of the system and the equipment is greatly improved, in order to effectively reduce the operation and maintenance workload, accurately position the faults of the system and the equipment and reasonably analyze the energy utilization state of a user, equipment data are efficiently acquired based on an automatic acquisition means, corresponding conclusions are obtained through automatic analysis by a reasonable calculation method, and the on-site operation and maintenance work is supported.
The construction of the electricity, water, gas and heat energy metering management system refers to the construction experience of the electricity energy information acquisition and management system in nearly ten years, takes the electricity energy information acquisition technology for the electric energy meter as a core, simultaneously accesses and acquires the data of the water meter, the gas meter and the heat meter, integrates the data in a system main station, and realizes the convenience functions of multiple single functions and the like. Through years of construction and operation and maintenance, the electric energy information acquisition and management system accumulates a large amount of experience, the development of an intelligent measurement technology is powerfully promoted, the intelligent level of a power grid is improved, various acquired data play an important supporting role in a plurality of professional business applications such as power transaction, electric charge recovery, power utilization inspection, market demand side, line loss lean analysis, power distribution network operation monitoring, power supply quality monitoring and fault repair, and become an important basic data source.
In the practical application of the metering device, the user may have abnormal energy utilization, and the way for identifying whether the user can normally use the energy is complex and has poor effect.
Disclosure of Invention
In order to solve the problem of poor effect of identifying the abnormal energy consumption condition existing in the user in the background technology, the invention provides a method and a system for judging whether the energy consumption intensity multipoint metering difference value exceeds the limit value, wherein the method and the system judge whether the energy consumption intensity multipoint metering difference value exceeds the limit value according to the preset condition by acquiring and analyzing the data of an energy metering management system, and further judge whether the abnormal energy consumption condition exists, and the method for judging whether the energy consumption intensity multipoint metering difference value exceeds the limit value comprises the following steps:
acquiring energy consumption intensity data of the current daily energy side metering equipment and energy consumption intensity data of energy supply side metering equipment corresponding to the energy consumption intensity data by an energy metering management system master station;
confirming whether the energy supply flow value of the energy-side metering equipment on the current day is in a preset interval or not; if the energy consumption exceeds the preset value, the feedback energy consumption intensity is abnormal; the preset interval is set according to a user standard energy supply flow value;
if not, calculating the current daily energy intensity error value of the user; the energy consumption intensity error value is obtained by calculating the ratio of the difference of the energy consumption value of the energy consumption side metering equipment per second minus the energy consumption value of the energy consumption side metering equipment per second to the energy consumption value of the energy consumption side metering equipment per second;
and comparing the error value of the current day energy intensity of the user with a preset error threshold value to determine whether the current day energy intensity of the user side exceeds a limit value.
Further, the metering equipment comprises an electric energy meter, when the metering equipment is the electric energy meter, the energy value of the metering equipment per second is calculated according to the apparent power value, the energy supply flow value is calculated according to the current value, and the standard energy supply flow value of a user is calculated according to the rated current.
Further, when the metering device is an electric energy meter, the preset error threshold is 15%.
Furthermore, the metering equipment comprises a water meter, a gas meter and a heat meter; when the metering equipment is any one of a water meter, a gas meter and a heat meter, the energy supply flow value and the energy value per second of the metering equipment are calculated according to the current instantaneous flow rate of the water meter, and the standard energy supply flow value of the user is calculated according to the maximum flow rate.
Further, when the metering device is any one of a water meter, a gas meter and a heat meter, the preset error threshold is 10%.
Further, after determining whether the energy consumption intensity of the user side on the current day exceeds a limit value, the method further includes:
and if each day of the same energy side metering equipment for continuous M days exceeds the limit value, generating an event that the energy intensity metering difference value exceeds the limit value, and taking the minimum value of the user current day energy intensity error values in the M days as the event grade.
Furthermore, the metering equipment comprises an electric energy meter, a water meter, a gas meter and a heat meter; if the energy intensity metering difference value exceeding limit event occurs for one or more energy-consumption side metering devices of the same user, the energy intensity metering difference value exceeding limit event corresponding to the user is a weighted average value of the energy intensity metering difference value exceeding limit event levels corresponding to the one or more metering devices of the user.
Further, the weight of the electric energy meter is 1.5, the weight of the water meter is 1.2, the weight of the gas meter is 1.2, and the weight of the heat meter is 1.1.
The system for judging whether the energy consumption intensity multipoint metering difference value exceeds the limit value comprises the following steps:
the data acquisition unit is used for acquiring the energy consumption intensity data of the daily energy side metering equipment and the energy consumption intensity data of the corresponding energy supply side metering equipment through the energy metering management system master station;
the abnormality monitoring unit is used for confirming whether the energy supply flow value of the energy-side metering equipment on the current day is in a preset interval or not; if the energy consumption exceeds the preset value, the feedback energy consumption intensity is abnormal; the preset interval is set according to a user standard energy supply flow value;
the error calculation unit is used for calculating the current daily performance intensity error value of the user; the energy consumption intensity error value is obtained by calculating the ratio of the difference of the energy consumption value of the energy consumption side metering equipment per second minus the energy consumption value of the energy consumption side metering equipment per second to the energy consumption value of the energy consumption side metering equipment per second;
and the limit value judging unit is used for comparing the error value of the current day energy intensity of the user with a preset error threshold value to determine whether the current day energy intensity of the user side exceeds the limit value.
Further, the metering equipment comprises an electric energy meter, when the metering equipment is the electric energy meter, the energy value of the metering equipment per second is calculated according to the apparent power value, the energy supply flow value is calculated according to the current value, and the standard energy supply flow value of a user is calculated according to the rated current. When the metering device is an electric energy meter, the preset error threshold is 15%.
Furthermore, the metering equipment comprises a water meter, a gas meter and a heat meter; when the metering equipment is any one of a water meter, a gas meter and a heat meter, the energy supply flow value and the energy value per second of the metering equipment are calculated according to the current instantaneous flow rate of the water meter, and the standard energy supply flow value of the user is calculated according to the maximum flow rate. When the metering device is any one of a water meter, a gas meter and a heat meter, the preset error threshold value is 10%.
Further, the limit value judging unit is configured to generate an event that the energy consumption intensity measurement difference value exceeds the limit value when each of M consecutive days of the same energy consumption side measurement device exceeds the limit value, and use a minimum value of user current day energy intensity error values in the M consecutive days as an event level.
Furthermore, the metering equipment comprises an electric energy meter, a water meter, a gas meter and a heat meter; if the energy intensity metering difference value exceeding limit event occurs for one or more energy-consumption side metering devices of the same user, the energy intensity metering difference value exceeding limit event corresponding to the user is a weighted average value of the energy intensity metering difference value exceeding limit event levels corresponding to the one or more metering devices of the user.
Further, the weight of the electric energy meter is 1.5, the weight of the water meter is 1.2, the weight of the gas meter is 1.2, and the weight of the heat meter is 1.1.
The invention has the beneficial effects that: the technical scheme of the invention provides a method and a system for judging whether the energy consumption intensity multipoint metering difference value exceeds the limit value, wherein the method and the system judge whether the energy consumption intensity multipoint metering difference value exceeds the limit value according to the preset condition by acquiring and analyzing the data of an energy metering management system, and further judge whether the abnormal energy consumption condition exists, and the method and the system analyze whether the metering equipment is in the normal working state and whether the possibility of the abnormal energy consumption exists in a user according to the energy consumption intensity comparison result of 2 different metering equipment on the same energy transmission line. The method and the system are used for an electric, water and gas energy metering management system, are suitable for a system structure which is jointly constructed by a system main station, a collecting device and a metering device, the collecting device collects data of the metering device, data analysis is carried out on the system main station, the state and the event that the energy consumption intensity multipoint metering difference value exceeds the limit value are judged, the operation and maintenance work of the energy metering management system can be supported by the analysis result, the working efficiency is improved, and the operation reliability of the system is improved.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
FIG. 1 is a flowchart of a method for determining whether a measured difference exceeds a threshold using energy intensity;
FIG. 2 is a block diagram of a system for determining whether a difference between energy levels exceeds a threshold.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
FIG. 1 is a flowchart of a method for determining whether a measured difference exceeds a threshold using energy intensity; as shown in fig. 1, the method includes:
step 110, acquiring energy consumption intensity data of the daily energy metering device and energy consumption intensity data of the energy supply side metering device corresponding to the daily energy metering device by the energy metering management system main station;
further, the metering equipment comprises an electric energy meter, when the metering equipment is the electric energy meter, the energy value of the metering equipment per second is calculated according to the apparent power value, the energy supply flow value is calculated according to the current value, and the standard energy supply flow value of a user is calculated according to the rated current; when the metering device is an electric energy meter, the preset error threshold is 15%.
Furthermore, the metering equipment comprises a water meter, a gas meter and a heat meter; when the metering equipment is any one of a water meter, a gas meter and a heat meter, the energy supply flow value and the energy value used per second of the metering equipment are calculated according to the current instantaneous flow rate of the water meter, and the standard energy supply flow value of a user is calculated according to the maximum flow rate; when the metering device is any one of a water meter, a gas meter and a heat meter, the preset error threshold value is 10%.
Step 120, confirming whether the energy supply flow value of the energy side metering equipment on the current day is in a preset interval or not; if the energy consumption exceeds the preset value, the feedback energy consumption intensity is abnormal; the preset interval is set according to a user standard energy supply flow value;
taking this embodiment as an example: the energy supply flow value of the energy side metering equipment is more than 10% of the standard energy supply flow value of the user; the energy supply flow value of the energy side metering device is less than 5 times of the standard energy supply flow value of the user.
Step 130, if the current daily performance intensity does not exceed the preset value, calculating a current daily performance intensity error value of the user; the energy consumption intensity error value is obtained by calculating the ratio of the difference of the energy consumption value of the energy consumption side metering equipment per second minus the energy consumption value of the energy consumption side metering equipment per second to the energy consumption value of the energy consumption side metering equipment per second;
under the normal energy consumption condition, satisfy with energy side metering equipment and energy supply side metering equipment: the energy source flowing through the energy consumption side metering device must flow through the energy supply side metering device, and the energy source flowing through the energy supply side metering device must flow through the energy consumption side metering device.
Step 140, comparing the error value of the current day energy intensity of the user with a preset error threshold value, and determining whether the current day energy intensity of the user exceeds a limit value.
Further, the method further comprises: and if each day of the same energy side metering equipment for continuous M days exceeds the limit value, generating an event that the energy intensity metering difference value exceeds the limit value, and taking the minimum value of the user current day energy intensity error values in the M days as the event grade.
Furthermore, the metering equipment comprises an electric energy meter, a water meter, a gas meter and a heat meter; if the energy intensity metering difference value exceeding limit event occurs for one or more energy-consumption side metering devices of the same user, the energy intensity metering difference value exceeding limit event corresponding to the user is a weighted average value of the energy intensity metering difference value exceeding limit event levels corresponding to the one or more metering devices of the user.
Further, the weight of the electric energy meter is 1.5, the weight of the water meter is 1.2, the weight of the gas meter is 1.2, and the weight of the heat meter is 1.1.
Fig. 2 is a structural diagram of a system for determining whether an energy intensity multi-point measurement difference value exceeds a limit value according to an embodiment of the present invention, as shown in fig. 2, the system includes:
the data acquisition unit 210 is used for acquiring the energy consumption intensity data of the daily energy metering device and the energy consumption intensity data of the energy supply side metering device corresponding to the daily energy metering device through the energy metering management system master station;
further, the metering equipment comprises an electric energy meter, when the metering equipment is the electric energy meter, the energy value of the metering equipment per second is calculated according to the apparent power value, the energy supply flow value is calculated according to the current value, and the standard energy supply flow value of a user is calculated according to the rated current. When the metering device is an electric energy meter, the preset error threshold is 15%.
Furthermore, the metering equipment comprises a water meter, a gas meter and a heat meter; when the metering equipment is any one of a water meter, a gas meter and a heat meter, the energy supply flow value and the energy value per second of the metering equipment are calculated according to the current instantaneous flow rate of the water meter, and the standard energy supply flow value of the user is calculated according to the maximum flow rate. When the metering device is any one of a water meter, a gas meter and a heat meter, the preset error threshold value is 10%.
An anomaly monitoring unit 220, wherein the anomaly monitoring unit 220 is used for confirming whether the energy supply flow value of the energy-side metering device on the day is in a preset interval or not; if the energy consumption exceeds the preset value, the feedback energy consumption intensity is abnormal; the preset interval is set according to a user standard energy supply flow value;
an error calculation unit 230, wherein the error calculation unit 230 is used for calculating the current daily performance intensity error value of the user; the energy consumption intensity error value is obtained by calculating the ratio of the difference of the energy consumption value of the energy consumption side metering equipment per second minus the energy consumption value of the energy consumption side metering equipment per second to the energy consumption value of the energy consumption side metering equipment per second;
and a limit value judging unit 240, where the limit value judging unit 240 is configured to compare the error value of the user current day energy intensity with a preset error threshold value, and determine whether the user side energy intensity on the current day exceeds a limit value.
Further, the limit value determining unit 240 is configured to generate an event that the energy consumption intensity measurement difference value exceeds the limit value when each of M consecutive days of the same energy consumption side measurement device exceeds the limit value, and use a minimum value of the error values of the user energy consumption intensity in M consecutive days as an event level.
Furthermore, the metering equipment comprises an electric energy meter, a water meter, a gas meter and a heat meter; if the energy intensity metering difference value exceeding limit event occurs for one or more energy-consumption side metering devices of the same user, the energy intensity metering difference value exceeding limit event corresponding to the user is a weighted average value of the energy intensity metering difference value exceeding limit event levels corresponding to the one or more metering devices of the user.
Further, the weight of the electric energy meter is 1.5, the weight of the water meter is 1.2, the weight of the gas meter is 1.2, and the weight of the heat meter is 1.1.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the disclosure may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Reference to step numbers in this specification is only for distinguishing between steps and is not intended to limit the temporal or logical relationship between steps, which includes all possible scenarios unless the context clearly dictates otherwise.
Moreover, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the disclosure and form different embodiments. For example, any of the embodiments claimed in the claims can be used in any combination.
Various component embodiments of the disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. The present disclosure may also be embodied as device or system programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present disclosure may be stored on a computer-readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the disclosure, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The disclosure may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems may be embodied by one and the same item of hardware.
The foregoing is directed to embodiments of the present disclosure, and it is noted that numerous improvements, modifications, and variations may be made by those skilled in the art without departing from the spirit of the disclosure, and that such improvements, modifications, and variations are considered to be within the scope of the present disclosure.

Claims (10)

1. A method for judging whether an energy intensity multipoint metering difference value exceeds a limit value, comprising the following steps:
acquiring energy consumption intensity data of the current daily energy side metering equipment and energy consumption intensity data of energy supply side metering equipment corresponding to the energy consumption intensity data by an energy metering management system master station;
confirming whether the energy supply flow value of the energy-side metering equipment on the current day is in a preset interval or not; if the energy consumption exceeds the preset value, the feedback energy consumption intensity is abnormal; the preset interval is set according to a user standard energy supply flow value;
if not, calculating the current daily energy intensity error value of the user; the energy consumption intensity error value is obtained by calculating the ratio of the difference of the energy consumption value per second of the energy consumption side metering equipment minus the energy consumption value per second of the energy supply side metering equipment to the energy consumption value per second of the energy supply side metering equipment;
comparing the error value of the current daily energy intensity of the user with a preset error threshold value, and determining whether the current daily energy intensity exceeds a limit value;
after determining whether the energy intensity of the current day energy side exceeds the limit value, if the energy intensity of the same energy side metering device exceeds the limit value every continuous M days, generating an event that the energy intensity metering difference value exceeds the limit value, and taking the minimum value of the user current day energy intensity error value in the M days as the event grade;
the metering equipment comprises an electric energy meter, a water meter, a gas meter and a heat meter; if the energy intensity metering difference value exceeding the limit value event occurs to a plurality of energy-consumption side metering devices of the same user, the energy intensity metering difference value exceeding the limit value event corresponding to the user is a weighted average value of the energy intensity metering difference value exceeding the limit value event grade corresponding to the plurality of metering devices of the user;
the weight of the electric energy meter is 1.5, the weight of the water meter is 1.2, the weight of the gas meter is 1.2, and the weight of the heat meter is 1.1.
2. The method of claim 1, wherein: when the metering equipment is an electric energy meter, the energy value of the metering equipment per second is calculated according to the apparent power value, the energy supply flow value is calculated according to the current value, and the standard energy supply flow value of a user is calculated according to the rated current.
3. The method of claim 2, wherein: when the metering device is an electric energy meter, the preset error threshold is 15%.
4. The method of claim 1, wherein: when the metering equipment is any one of a water meter, a gas meter and a heat meter, the energy supply flow value and the energy value used per second of the metering equipment are calculated according to the current instantaneous flow rate of the water meter, the gas meter and the heat meter, and the standard energy supply flow value of the user is calculated according to the maximum flow rate.
5. The method of claim 4, wherein: when the metering device is any one of a water meter, a gas meter and a heat meter, the preset error threshold value is 10%.
6. A system for determining with energy intensity that a multipoint measurement difference exceeds a limit, the system comprising:
the data acquisition unit is used for acquiring the energy consumption intensity data of the daily energy side metering equipment and the energy consumption intensity data of the corresponding energy supply side metering equipment through the energy metering management system master station;
the abnormality monitoring unit is used for confirming whether the energy supply flow value of the energy-side metering equipment on the current day is in a preset interval or not; if the energy consumption exceeds the preset value, the feedback energy consumption intensity is abnormal; the preset interval is set according to a user standard energy supply flow value;
the error calculation unit is used for calculating the current daily performance intensity error value of the user; the energy consumption intensity error value is obtained by calculating the ratio of the difference of the energy consumption value per second of the energy consumption side metering equipment minus the energy consumption value per second of the energy supply side metering equipment to the energy consumption value per second of the energy supply side metering equipment;
the limit value judging unit is used for comparing the error value of the current daily energy intensity of the user with a preset error threshold value and determining whether the current daily energy intensity exceeds a limit value;
the limit value judging unit is used for generating an event that the measurement difference value of the energy consumption intensity exceeds the limit value when each day of the same energy consumption side measuring equipment for continuous M days exceeds the limit value, and taking the minimum value of the error value of the user energy consumption intensity in the M days as the event grade;
the metering equipment comprises an electric energy meter, a water meter, a gas meter and a heat meter; if the energy intensity metering difference value exceeding the limit value event occurs to a plurality of energy-consumption side metering devices of the same user, the energy intensity metering difference value exceeding the limit value event corresponding to the user is a weighted average value of the energy intensity metering difference value exceeding the limit value event grade corresponding to the plurality of metering devices of the user;
the weight of the electric energy meter is 1.5, the weight of the water meter is 1.2, the weight of the gas meter is 1.2, and the weight of the heat meter is 1.1.
7. The system of claim 6, wherein: when the metering equipment is an electric energy meter, the energy value of the metering equipment per second is calculated according to the apparent power value, the energy supply flow value is calculated according to the current value, and the standard energy supply flow value of a user is calculated according to the rated current.
8. The system of claim 7, wherein: when the metering device is an electric energy meter, the preset error threshold is 15%.
9. The system of claim 6, wherein: when the metering equipment is any one of a water meter, a gas meter and a heat meter, the energy supply flow value and the energy value used per second of the metering equipment are calculated according to the current instantaneous flow rate of the water meter, the gas meter and the heat meter, and the standard energy supply flow value of the user is calculated according to the maximum flow rate.
10. The system of claim 9, wherein: when the metering device is any one of a water meter, a gas meter and a heat meter, the preset error threshold value is 10%.
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