CN103197138A - Intelligent electric meter with function of detecting power supply reliability and voltage qualified rate and detecting method thereof - Google Patents
Intelligent electric meter with function of detecting power supply reliability and voltage qualified rate and detecting method thereof Download PDFInfo
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Abstract
The invention discloses an intelligent electric meter with a function of detecting power supply reliability and a voltage qualified rate and a detecting method of the intelligent electric meter with the function of detecting the power supply reliability and the voltage qualified rate. The intelligent electric meter comprises a voltage sensor and a current sensor, and the voltage sensor and the current sensor are connected with a sampling circuit through a signal adjusting circuit; the sampling circuit is connected with a digital signal processor (DSP); and MCU is simultaneously connected with the DSP, a data memorizer, a power supply module, a local input/output (I/O) module, a remote communication module and a hardware clock. Alternative current voltage data which are collected by the intelligent electric meter not only are used for electric energy measuring and statistics, but also are used for detection and statistics of the power supply reliability and the voltage qualified rate by conducting classification, timing and accumulation on different ranges where the voltage values locate such as an over upper limit range, a qualified range, a over floor level range, a decompression range, the intelligent electric meter is enabled to possess the function of detecting the power supply reliability and the voltage qualified rate, and applied range of the intelligent electric meter is widened.
Description
Technical field
The present invention relates to grid power measurement instrument field, relate in particular to a kind of intelligent electric energy meter and monitoring method with power supply reliability and rate of qualified voltage monitoring function.
Background technology
The power supply service quality important indicator of power supply reliability and receiving end voltage qualification rate (hereinafter to be referred as " two rates of powering ") reflection power supply enterprise is that power monitoring mechanism implements one of main contents of supervising to power supply enterprise's power supply quality.In vast rural area, power supply reliability and rate of qualified voltage are low also to be the focus that power supply service quality is complained.
The factor that influences power supply reliability is more, and the statistical method of power supply reliability is also complicated.Power supply reliability comprises RS-1, RS-2, RS-3 three class statistical indicators, but do not form unified and standard power supply reliability in the industry at present and add up, record the instrumentation device automatically, main dependence artificially collects associated electrical network operation data, and manual entry power supply reliability management information system is added up.
Voltage monitoring instrument is to have the electric system normal operating condition is slowly changed the device that caused voltage deviation carries out continuous monitoring and statistical function.Generally adopt voltage monitoring instrument to realize the record of receiving end voltage qualification rate, statistics in the industry.According to the relevant requirements of " power supply supervisory method " (Electricity Monitoring Commission's 27 commands), voltage monitoring instrument is installed in the position of regulation by power supply enterprise, and by power monitoring mechanism the situation that power supply enterprise arranges voltage monitoring point is implemented supervision.At present, the voltage monitoring instrument of power supply enterprise's widespread use generally all has communication interface, can realize the teletransmission function of voltage monitoring data, is reported to the voltage monitoring system main website to carry out statistical management the data self-timing.
Because power supply reliability and receiving end voltage qualification rate data are installed special recording device and provided statistics to realize by power supply enterprise, it is bigger that its statistics is influenced by subjectivity, is difficult to reflect truly, objectively power supply " two rates " authenticity.In addition, realize that the statistics of power supply " two rates " all needs to drop into specialized equipment, system and organizes the special messenger to safeguard, taken bigger financial and manpower resources.Therefore, in conjunction with existence conditions, propose that a kind of the record statistic device of power supply reliability and receiving end voltage qualification rate can be provided simultaneously is that Practical significance is arranged very much.
Ammeter is the instrument of consumed power in the metering circuit, and its installation site is between the property right separation of power supply enterprise and power consumer, and this position is the natural best place of measuring power supply reliability and rate of qualified voltage.At present, adopt the intelligent electric meter of digital collection and the communication technology to become the main flow electric power meter, and set up and to have formed power consumer power information acquisition system, this just provides sufficient basic condition for realizing power supply " two rates " continuous monitoring at intelligent electric meter and gathering statistical function.
" ammeter that possesses the voltage monitoring function " that the patent No. provides for CN200920065662.1 realizes that on existing ammeter traditional function basis the voltage monitoring function expands, and is the effective ways of realizing receiving end voltage qualification rate statistics.But according to its disclosed technical information, also have following several respects shortcoming: (1) does not provide power supply reliability record statistical function.(2) its rate of qualified voltage statistical method does not meet the requirement of relevant technologies standard.
Summary of the invention
The purpose of this invention is to provide a kind of ammeter with power supply reliability and receiving end voltage qualification rate, and satisfy the requirement of following need satisfaction " voltage monitoring instrument operation technique condition " technically; The data of two types of the power supply reliability of monitoring point and receiving end voltage qualification rates can be provided again simultaneously; And satisfy the requirement of the relevant access conditions of " power consumer power information acquisition system ".
The technical solution adopted in the present invention is: a kind of intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function, comprise voltage sensor and current sensor, and it links to each other with sample circuit by signal adjustment circuit; Sample circuit links to each other with DSP; MCU links to each other with hardware clock with DSP, data-carrier store, power module, local I/O module, remote communication module simultaneously.Wherein, voltage sensor, current sensor are responsible for changing forceful electric power pressure, current analog signal into light current pressure, current analog signal; Sample circuit is responsible for carrying out mould/number conversion to gathering signal; Data-carrier store is responsible for storing various parameters and the service data of ammeter; DSP is responsible for voltage, current digital signal are handled, and forms data such as voltage, electric current, power, electric weight; MCU is every leitungskern coordinating elements such as each realization metering of intelligent electric meter, power supply " two rates " statistics, data manipulation, data communication; Remote communication module is responsible for the remote transmission of correlation parameter, data.
Preferably, described power module comprises rectifier charging circuit and rechargeable battery, for intelligent electric meter provides operation power supply and back-up source.
Preferably, described local I/O module comprises button, display screen for the external unit of input, output; Remote communication module connects main station system.
Preferably, described hardware clock is the timing module that has temperature compensation and battery, is used for the accurate timing of independence of intelligent electric meter, and when guaranteeing that intelligent electric meter still can accurately be walked when outage, to guarantee power supply " two rates " time statistical accuracy.
The present invention also provides a kind of intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function to realize the method for power supply reliability and rate of qualified voltage monitoring be may further comprise the steps:
A, data pre-service: the voltage transformer (VT) summation current transformer is monitored real-time voltage, the current signal of power consumer supply line, and is converted to real-time voltage, current digital signal by signal adjustment circuit and sample circuit, outputs to DSP and carries out calculation process;
B, DSP data are handled: DSP handles real-time voltage, current digital signal, forms voltage data, current data, power data, electric quantity data, and wherein voltage data comprises voltage effective value, unit interval average voltage;
C, MCU data analysis: MCU read the voltage value that DSP generates, according between its magnitude of voltage location by voltage more the upper limit, qualified, more four types of lower limits, decompression compare and the timing of classifying adds up, carry out power supply reliability analysis and rate of qualified voltage analysis, and data and analysis result are outputed to data-carrier store;
D, statistics submit to: MCU regularly outputs to data and analysis result on the local display module in the local I/O module, mainly shows by display screen, and regularly uploads to main station system by remote communication module;
E, " two rates " data statistics: main website receives and stores the power supply reliability of each monitoring point and the statistics of rate of qualified voltage by power information acquisition system data communication network, and extract the monitoring point according to default program by Statistical Criteria automatically and add up, obtain average power supply reliability and average rate of qualified voltage.
Preferably, the concrete grammar of the power supply reliability analysis of described MCU is: MCU the DSP current average voltage that provides and the decompression voltage parameter of presetting is provided compares, when the average voltage of intelligent electric meter input＜decompression voltage, or intelligent electric meter is when becoming complete power failure state by normal electriferous state, intelligent electric meter relies on back-up source to continue operation a period of time, MCU writes entry data memory with current decompression date and time, is designated as DT_DN1; Average voltage when input〉decompression voltage, or intelligent electric meter is when becoming normal electriferous state by complete power failure state, and MCU writes entry data memory with current telegram in reply date and time, is designated as DT_UP1, and the frequency of power cut counter is added 1.When taking place the 2nd, 3.。。When stopping sending a telegram in reply for n time, analogize as stated above and carry out record.Single household have a power failure the cumulative time=(DT_UP1-DT_DN1)+(DT_UP2-DT_DN2)+... (DT_UPn-DT_DNn); Respectively with day, the moon, year be measurement period, when the hardware clock of intelligent electric meter is finished a measurement period and is walked after, MCU starts calculation procedure automatically, calculates the single household power supply reliability in corresponding last cycle.In a measurement period, single household power supply reliability computing formula is:
The concrete grammar of the rate of qualified voltage analysis of described MCU is: the DSP current average voltage that provides and the more upper voltage limit of presetting are provided MCU, more lower voltage limit, decompression voltage setting valve compare and time accumulative total, calculate voltage respectively and more go up limit T1, more descend limit T2, decompression duration T3, calculate the qualified duration Tn=T-of single household voltage (T1+T2+T3) in the measurement period duration T according to following formula again.After when the hardware clock of intelligent electric meter is finished a measurement period and walked, MCU starts calculation procedure automatically, calculates the single household rate of qualified voltage in corresponding last cycle.In a measurement period, single household rate of qualified voltage formula is:
Preferably, in step e, the concrete grammar that described main station system obtains average power supply reliability and average rate of qualified voltage is: adopt the weighted mean average power supply reliability in statistical method zoning and zone leveling rate of qualified voltage, in a measurement period, the power off time sum that same electric pressure, same power supply area user's average power supply reliability equals a plurality of monitoring points divided by the monitoring point statistics during the time sum, namely
In a measurement period, the average voltage qualification rate of same electric pressure, same power supply area power consumer equals the voltage qualified time sum of a plurality of monitoring points divided by monitoring point operation timing statistics sum, namely
Preferably, the voltage effective value of power consumer per second is at least sampled 1 time, and average voltage per minute is at least added up once.
Preferably, voltage data also comprises voltage minimum, maximal value, mean value, integral point value.
Compared with prior art, the invention has the beneficial effects as follows: 1, change statistics dependence power supply enterprise's installation specialized equipment of traditional power supply reliability, rate of qualified voltage and the mode that infosystem is added up, directly utilize electric power meter as power supply " two rates " monitoring and statistics terminal device, the range of application that has expanded intelligent electric meter.2, improved coverage rate and the dirigibility of power supply " two rates " statistics with examination, power supply " two rates " statistical monitoring point all can be extracted, be defined as in the infield of any installation intelligent electric meter of the present invention.3, accuracy and the objectivity of power supply " two rates " statistics have been improved, the power supply of each monitoring point " two rates " statistics is all powered, and regulator, power supply enterprise and power consumer are tripartite supervises jointly, gets rid of the artificial interference factor of traditional monitoring equipment and statistical method to greatest extent.4, manufacturing and implementation cost are cheap, based on the DSP intelligent electric meter, only need to carry out the corresponding software exploitation by technical method of the present invention, just can realize described function.5, the present invention can replace existing specialized voltages monitor, decompression calculagraph fully, both can be used as electric power meter and has used, and also can be used as voltage monitoring instrument or decompression calculagraph and uses.6, the metered voltage loop fault time of origin that can recording electrical meter causes because of nature or artificial origin provides the technical data of science for remedying electric weight, prevents the electric energy metrical loss.7, compatible " power consumer power information acquisition system " relevant technologies code requirement directly utilizes resources such as its related communication, main station system to realize remote auto collection and the statistics of power supply " two rates ".
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is data acquisition process synoptic diagram of the present invention;
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
As shown in Figure 1 and Figure 2, a kind of intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function comprises voltage sensor and current sensor, and it links to each other with sample circuit by signal adjustment circuit; Sample circuit links to each other with DSP; MCU links to each other with hardware clock with DSP, data-carrier store, power module, local I/O module, remote communication module simultaneously.Wherein, voltage sensor, current sensor are responsible for changing forceful electric power pressure, current analog signal into light current pressure, current analog signal; Sample circuit is responsible for carrying out mould/number conversion to gathering signal; Data-carrier store is responsible for storing various parameters and the service data of ammeter; DSP is responsible for voltage, current digital signal are handled, and forms data such as voltage, electric current, power, electric weight; MCU is every leitungskern coordinating elements such as each realization metering of intelligent electric meter, power supply " two rates " statistics, data manipulation, data communication; Remote communication module is responsible for the remote transmission of correlation parameter, data.Power module comprises rectifier charging circuit and rechargeable battery, for intelligent electric meter provides operation power supply and back-up source.Local I/O module comprises button, display screen for the external unit of input, output; Remote communication module connects main station system.Hardware clock is the timing module that has temperature compensation and battery, is used for the accurate timing of independence of intelligent electric meter, and when guaranteeing that intelligent electric meter still can accurately be walked when outage, to guarantee power supply " two rates " time statistical accuracy.
The present invention uses above-mentioned intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function to realize the method for power supply reliability and rate of qualified voltage monitoring be may further comprise the steps:
A, data pre-service: the voltage transformer (VT) summation current transformer is monitored real-time voltage, the current signal of power consumer supply line, and is converted to real-time voltage, current digital signal by signal adjustment circuit and sample circuit, outputs to DSP and carries out calculation process;
B, DSP data are handled: DSP handles real-time voltage, current digital signal, forms voltage data, current data, power data, electric quantity data, and wherein voltage data comprises voltage effective value, unit interval average voltage;
C, MCU data analysis: MCU read the voltage value that DSP generates, according between its magnitude of voltage location by voltage more the upper limit, qualified, more four types of lower limits, decompression compare and the timing of classifying adds up, carry out power supply reliability analysis and rate of qualified voltage analysis, and data and analysis result are outputed to data-carrier store;
D, statistics are submitted to: MCU regularly outputs to data and analysis result on the local display module of local I/O module, mainly shows by display screen, and regularly uploads to main station system by remote communication module;
E, " two rates " data statistics: main website receives and stores the power supply reliability of each monitoring point and the statistics of rate of qualified voltage by power information acquisition system data communication network, and extract the monitoring point according to default program by Statistical Criteria automatically and add up, obtain average power supply reliability and average rate of qualified voltage.
The calculating principle of power supply reliability and rate of qualified voltage:
1, the statistics of power supply reliability.
According to the relevant regulations of " electric power system user's power supply reliability assessment routine " (DL/T 836-2003), the basic index of reliability comprises the average power off time of user (note is made AIHC-1), power supply reliability (note is made RS-1), the average frequency of power cut of user (note is made AITC-1) three classes.The computing formula of three class basic indexs is as follows:
According to above-mentioned statistical formula principle, can adopt the average power supply reliability in weighted mean statistical method zoning.In a measurement period, the power off time sum that same electric pressure, same power supply area user's average power supply reliability equals a plurality of monitoring points divided by the monitoring point statistics during the time sum, namely
In the same power supply area, the monitoring point quantity of including the power supply reliability statistics in is more many, more can reflect real average power supply reliability statistics.
2, the statistical method of receiving end voltage qualification rate.
Receiving end voltage qualification rate statistics to as if the deviation situation of power supply virtual voltage and normal voltage.According to the definition of " quality of power supply supply voltage deviation " (GB/T 12325-2008), rate of qualified voltage is the number percent of actual motion voltage deviation accumulated running time and corresponding total operation timing statistics in limits.The node of monitoring power system voltage value is called voltage monitoring point, and the statistical computation by the supply voltage deviation can obtain rate of qualified voltage, and its computing formula is as follows:
Voltage monitoring is divided into A, B, C, D four class monitoring points, monitors the receiving end voltage of different electric pressures and power supply type respectively, and its receiving end voltage deviation limit value is also inequality.
According to above-mentioned statistical formula principle, can adopt weighted mean statistical method zoning average voltage qualification rate.In a measurement period, the average voltage qualification rate of same electric pressure, same power supply area power consumer equals the voltage qualified time sum of a plurality of monitoring points divided by monitoring point operation timing statistics sum, namely
In the same power supply area, the monitoring point quantity of including the rate of qualified voltage statistics in is more many, more can obtain average voltage qualification rate statistics accurately.
The realization principle of power supply reliability and rate of qualified voltage collection statistics:
1, monitoring point power supply reliability and rate of qualified voltage data acquisition process overall process.
Intelligent electric meter of the present invention is installed on the monitoring point, as shown in Figure 2, the sample circuit that utilizes of intelligent electric meter carries out analog-to-digital conversion with the alternating voltage simulating signal of monitoring point input, is the alternating voltage digital signal with the signal transition of importing, and outputs to DSP and carries out calculation process.DSP carries out calculation process to the digital voltage signal of input, calculates voltage effective value, unit interval average voltage.MCU reads the voltage value that DSP generates, according between its magnitude of voltage location by voltage more the upper limit, qualified, more four types of lower limits, decompression compare and the timing of classifying adds up, by measurement period " two rates " statistics of regularly powering, and relevant data is outputed to data-carrier store store.MCU also regularly outputs to statistics on the local display module of local I/O module, mainly shows by display screen, and regularly uploads to main station system.The voltage effective value per second of monitoring point is sampled 1 time at least, and the average voltage per minute of monitoring point is added up once at least.Monitoring point voltage and power supply " two rates " the data statistics cycle is the cycle to record respectively and store with day, the moon, year, and the voltage data of adding up also comprises voltage minimum, maximal value, mean value, integral point value etc.The measurement period time is provided by hardware clock, hardware clock regularly and main station system to the time to guarantee the time accuracy.
Main station system can be realized power supply " two rates " the data acquisition statistics to a plurality of intelligent electric meters.Main station system, power supply " two rates " data communication system do not need other construction, can increase power supply " two rates " analytic function with electric power user power utilization information acquisition system, directly utilize power information acquisition system main website and data channel thereof to realize the statistics of power supply " two rates ".
2, the specific implementation method of power supply reliability collection statistics:
(1) the reliability parameter is set and the intelligent electric meter initialization.Reliability is added up related major parameter and is comprised voltage transformer (VT) no-load voltage ratio, decompression voltage parameter, sampling measurement period, the check and correction of hardware clock time, above-mentioned parameter just should be pre-set when intelligent electric meter of the present invention is installed and be stored in the parameter region of data-carrier store, when intelligent electric meter powered up startup, the ammeter initialize routine read each correlation parameter and system time in the internal memory of MCU.
(2) single household power off time accumulative total, average frequency of power cut accumulative total.MCU the DSP current average voltage that provides and the decompression voltage parameter of presetting is provided compares, when intelligent electric meter input average voltage＜decompression voltage, or intelligent electric meter is when becoming complete power failure state by normal electriferous state, intelligent electric meter relies on back-up source to continue operation a period of time, MCU writes entry data memory with the time on current decompression date, is designated as DT_DN1; Input voltage when intelligent electric meter〉decompression voltage, or intelligent electric meter is when becoming normal electriferous state by complete power failure state, and MCU writes entry data memory with the current telegram in reply time on date, is designated as DT_UP1, and the frequency of power cut counter is added 1.When taking place the 2nd, 3.。。When stopping sending a telegram in reply for n time, analogize as stated above and carry out record.Single household have a power failure the cumulative time=(DT_UP1-DT_DN1)+(DT_UP2-DT_DN2)+... (DT_UPn-DT_DNn).
(3) single household power supply reliability (RS-1) calculates.In a measurement period, single household power supply reliability method is as follows:
With day, the moon, year be measurement period, after when the intelligent electric meter onboard clock is finished a measurement period and is walked, MCU just starts the reliability calculation procedure automatically, calculate proxima luce (prox. luc), the moon, circannian single household power supply reliability, write entry data memory, and the single household power supply reliability long preservation of a plurality of measurement periods is got off.
(4) show, upload.The MCU of intelligent electric meter outputs to local display device with power supply reliability related datas such as single household accumulative total power off time, working time, power supply reliabilities, or upload the data to main station system by remote communication module.
(5) main website statistics power supply reliability.Main website receives and stores the power supply reliability statistics of each monitoring point by power information acquisition system data communication network, and extract monitoring point power supply reliability data according to default program by Statistical Criterias such as time, zone, electric pressures automatically and carry out the power supply reliability statistics, its average power supply reliability by formula (4) calculates.
3, the specific implementation method of rate of qualified voltage collection statistics:
(1) receiving end voltage qualification rate parameter is set and the intelligent electric meter initialization.The related major parameter of rate of qualified voltage comprises voltage transformer (VT) no-load voltage ratio, more upper voltage limit, more lower voltage limit, decompression voltage parameter, sampling measurement period and the check and correction of hardware clock time, above-mentioned parameter just should preestablish and deposit in the parameter region of data-carrier store when intelligent electric meter of the present invention is installed, when intelligent electric meter powered up startup, the ammeter initialize routine read correlation parameter and system time in the internal memory of MCU.
(2) single household voltage qualified time statistics.The DSP current average voltage that provides and the more upper voltage limit of presetting are provided MCU, more lower voltage limit, decompression voltage setting valve compare and time accumulative total, calculate voltage respectively and more go up limit T1, more descend limit T2, decompression duration T3, calculate the qualified duration Tn=T-of single household voltage (T1+T2+T3) in the measurement period duration T according to following formula again.
(3) the single household rate of qualified voltage is calculated and storage.In a measurement period, single household rate of qualified voltage method is as follows:
In the formula, T is that measurement period duration, T1 are that more to go up limit, T2 be that more to descend limit (not comprising the decompression duration), T3 be the decompression duration to voltage to voltage.
Identical with the power supply reliability statistics, after when the intelligent electric meter onboard clock is finished a measurement period and is walked, the just automatic trigger voltage qualification rate calculation procedure of MCU, calculate the single household rate of qualified voltage of previous measurement period, and related data write entry data memory, the single household rate of qualified voltage related data long preservation of a plurality of measurement periods is got off.
(4) show, upload.The MCU of intelligent electric meter is with single household rate of qualified voltage related data, more going up limit, the qualified duration of voltage, voltage as: voltage more descends data such as limit, single household rate of qualified voltage to output to local display device, or in real time, regularly upload the data to main station system by remote communication module.
(5) main website statistics rate of qualified voltage.Main website receives and stores the rate of qualified voltage statistics of each monitoring point by power information image data communication network, and get monitoring point rate of qualified voltage data according to default program by Statistical Criterias such as time, zone, electric pressures automatically and carry out the rate of qualified voltage statistics, its average power supply reliability by formula (6) calculates.
Other embodiment:
1, the embodiment of dividing by monitoring point electric pressure type.
High voltage supply monitoring point for 10kV and above electric pressure, the measurement of its voltage realizes by voltage transformer (VT), can select for use specified input voltage to realize power supply " two rates " monitoring for the intelligent electric meter with power supply " two rates " monitoring function that exchanges 100V; For the low-voltage power supply monitoring point of alternating current 220V/380V, can select intelligent electric meter corresponding 220V or the specified input voltage of 380V, that have power supply " two rates " monitoring function to realize power supply " two rates " monitoring.
2, the embodiment of dividing by purposes.
Intelligent electric meter with power supply " two rates " monitoring function provided by the present invention, actual conditions according to the scene, monitoring point, and the power selection needs of " two rates " monitoring point statistical sample of main website, the place that intelligent electric meter of the present invention is installed arbitrarily, all can use by following several modes:
(1) uses as power supply reliability statistics or voltage monitoring instrument merely.
(2) use as ammeter merely.
(3) both as ammeter, also use as power supply " two rates " monitoring and statistics instrument.
3, replacement scheme.
Because it is consistent that electricity load management terminal, distribution transformer monitoring instrument etc. install within it on the portion's structure and function with intelligent electric meter, also all have voltage, electric current, electric power and electric weight statistics recording feature, scheme as an alternative, can be on electricity load management terminal, distribution transformer monitoring instrument basis, by scheme of the present invention, increase rate of qualified voltage and power supply reliability statistical function, equally also can realize the statistics of power supply " two rates ".Above-mentioned employing electricity load management terminal, distribution transformer monitoring instrument realize that the replacement scheme of power supply reliability or rate of qualified voltage monitoring also belongs to the scope of the invention.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in not breaking away from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (9)
1. the intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function is characterized in that, comprise voltage sensor and current sensor, it links to each other with sample circuit by signal adjustment circuit; Sample circuit links to each other with DSP; MCU links to each other with hardware clock with DSP, data-carrier store, power module, local I/O module, remote communication module simultaneously.
2. a kind of intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function according to claim 1 is characterized in that described power module comprises rectifier charging circuit and rechargeable battery.
3. a kind of intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function according to claim 1 is characterized in that, described local I/O module comprises button, display screen for the external unit of input, output; Remote communication module connects main station system.
4. a kind of intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function according to claim 1 is characterized in that described hardware clock is the timing module that has temperature compensation and battery.
5. a right to use requires 1 described intelligent electric meter with power supply reliability and rate of qualified voltage monitoring function to realize the method for power supply reliability and rate of qualified voltage monitoring be may further comprise the steps:
A, data pre-service: the voltage transformer (VT) summation current transformer is monitored real-time voltage, the current signal of power consumer supply line, and is converted to real-time voltage, current digital signal by signal adjustment circuit and sample circuit, outputs to DSP and carries out calculation process;
B, DSP data are handled: DSP handles real-time voltage, current digital signal, forms voltage data, current data, power data, electric quantity data, and wherein voltage data comprises voltage effective value, unit interval average voltage;
C, MCU data analysis: MCU read the voltage value that DSP generates, according between its magnitude of voltage location by voltage more the upper limit, qualified, more four types of lower limits, decompression compare and the timing of classifying adds up, carry out power supply reliability analysis and rate of qualified voltage analysis, and data and analysis result are outputed to data-carrier store;
D, statistics are submitted to: MCU regularly outputs to local I/O module with data and analysis result, shows by display screen, and regularly uploads to main station system by remote communication module;
E, " two rates " data statistics: main website receives and stores the power supply reliability of each monitoring point and the statistics of rate of qualified voltage by power information acquisition system data communication network, and extract the monitoring point according to default program by Statistical Criteria automatically and add up, obtain average power supply reliability and average rate of qualified voltage.
6. a kind of method to power supply reliability and rate of qualified voltage monitoring according to claim 6 is characterized in that,
The concrete grammar of the power supply reliability analysis of described MCU is: MCU the DSP current average voltage that provides and the decompression voltage parameter of presetting is provided compares, when the average voltage of intelligent electric meter input＜decompression voltage, or intelligent electric meter is when becoming complete power failure state by normal electriferous state, intelligent electric meter relies on back-up source to continue operation a period of time, MCU writes entry data memory with current decompression date and time, is designated as DT_DN1; Average voltage when input〉decompression voltage, or intelligent electric meter is when becoming normal electriferous state by complete power failure state, and MCU writes entry data memory with current telegram in reply date and time, is designated as DT_UP1, and the frequency of power cut counter is added 1.When taking place the 2nd, 3.。。When stopping sending a telegram in reply for n time, analogize as stated above and carry out record.Single household have a power failure the cumulative time=(DT_UP1-DT_DN1)+(DT_UP2-DT_DN2)+... (DT_UPn-DT_DNn); Respectively with day, the moon, year be measurement period, when the hardware clock of intelligent electric meter is finished a measurement period and is walked after, MCU starts calculation procedure automatically, calculates the single household power supply reliability in corresponding last cycle.In a measurement period, single household power supply reliability computing formula is:
The concrete grammar of the rate of qualified voltage analysis of described MCU is: the DSP current average voltage that provides and the more upper voltage limit of presetting are provided MCU, more lower voltage limit, decompression voltage setting valve compare and time accumulative total, calculate voltage respectively and more go up limit T1, more descend limit T2, decompression duration T3, calculate the qualified duration Tn=T-of single household voltage (T1+T2+T3) in the measurement period duration T according to following formula again.After when the hardware clock of intelligent electric meter is finished a measurement period and walked, MCU starts calculation procedure automatically, calculates the single household rate of qualified voltage in corresponding last cycle.In a measurement period, single household rate of qualified voltage formula is:
7. a kind of method to the monitoring of power supply reliability and rate of qualified voltage according to claim 6, it is characterized in that, in step e, the concrete grammar that described main station system obtains average power supply reliability and average rate of qualified voltage is: adopt the weighted mean average power supply reliability in statistical method zoning and zone leveling rate of qualified voltage, in a measurement period, the power off time sum that same electric pressure, same power supply area user's average power supply reliability equals a plurality of monitoring points divided by the monitoring point statistics during the time sum, namely
In a measurement period, the average voltage qualification rate of same electric pressure, same power supply area power consumer equals the voltage qualified time sum of a plurality of monitoring points divided by monitoring point operation timing statistics sum, namely
8. according to a kind of method to power supply reliability and rate of qualified voltage monitoring of claim 6, it is characterized in that the voltage effective value of power consumer per second is at least sampled 1 time, average voltage per minute is at least added up once.
9. according to a kind of method to power supply reliability and rate of qualified voltage monitoring of claim 6, it is characterized in that voltage data also comprises voltage minimum, maximal value, mean value, integral point value.
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| CN201310057461.8A CN103197138B (en) | 2013-02-22 | 2013-02-22 | A kind of intelligent electric meter and monitoring method with power supply reliability and rate of qualified voltage monitoring function |
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| CN201310057461.8A CN103197138B (en) | 2013-02-22 | 2013-02-22 | A kind of intelligent electric meter and monitoring method with power supply reliability and rate of qualified voltage monitoring function |
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| CN103197138A true CN103197138A (en) | 2013-07-10 |
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| CN105842653A (en) * | 2016-06-13 | 2016-08-10 | 国网江苏省电力公司电力科学研究院 | Simultaneous acquisition test circuit used for electric energy and clock pulses of electric energy meter |
| CN106018931A (en) * | 2016-05-12 | 2016-10-12 | 南方电网科学研究院有限责任公司 | Voltage qualification rate monitoring method and system |
| CN107942281A (en) * | 2017-10-30 | 2018-04-20 | 华立科技股份有限公司 | The statistical method of electric energy meter rate of qualified voltage |
| CN108037343A (en) * | 2017-10-23 | 2018-05-15 | 国网北京市电力公司 | A kind of voltage monitoring Management System Data deepens analysis method |
| CN108227678A (en) * | 2018-01-04 | 2018-06-29 | 广东电网有限责任公司电力科学研究院 | A kind of power distribution network no-voltage fault diagnostic method and device based on metering automation system |
| CN109490611A (en) * | 2018-10-29 | 2019-03-19 | 宁波三星智能电气有限公司 | A kind of time counting method of embedded device |
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| CN110244805A (en) * | 2019-06-19 | 2019-09-17 | 河北腾瑞电力设备科技有限公司 | A kind of intelligent electricity consumption information acquisition termination rack |
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| CN103499731B (en) * | 2013-08-27 | 2016-08-24 | 广东电网公司电力科学研究院 | A kind of comprehensive analysis method of supply voltage qualification rate |
| CN103499731A (en) * | 2013-08-27 | 2014-01-08 | 广东电网公司电力科学研究院 | Supply voltage qualified rate comprehensive analysis method |
| CN104635194A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Three-phase metering loop online fault monitoring timing device |
| CN104635194B (en) * | 2013-11-08 | 2017-12-05 | 中国石油天然气股份有限公司 | Three-phase metering loop online fault monitoring timing device |
| CN103728523A (en) * | 2014-01-21 | 2014-04-16 | 国家电网公司 | Urban power grid yield measuring method |
| CN104037758A (en) * | 2014-06-06 | 2014-09-10 | 华北电力大学 | Intelligent voltage monitoring data analyzing method based on multivariate data fusion |
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| CN104112345A (en) * | 2014-07-29 | 2014-10-22 | 深圳华越南方电子技术有限公司 | Data monitoring method of remote wireless meter reading system |
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| CN104749473B (en) * | 2015-04-21 | 2017-08-29 | 国家电网公司 | A kind of power information acquisition terminal for simulating scene stops upper electric event testing method |
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| CN105070029A (en) * | 2015-08-12 | 2015-11-18 | 江苏省电力公司苏州供电公司 | Carrier meter reading module having voltage eligibility rate monitoring function |
| CN105067876A (en) * | 2015-08-12 | 2015-11-18 | 江苏省电力公司苏州供电公司 | Tail-end voltage qualified rate monitoring device |
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| CN105203835A (en) * | 2015-09-14 | 2015-12-30 | 江苏省电力公司常州供电公司 | Method for monitoring and counting voltage qualified rate of terminal of power grid |
| CN106018931A (en) * | 2016-05-12 | 2016-10-12 | 南方电网科学研究院有限责任公司 | Voltage qualification rate monitoring method and system |
| CN106018931B (en) * | 2016-05-12 | 2018-11-30 | 南方电网科学研究院有限责任公司 | voltage qualification rate monitoring method and system |
| CN105842653A (en) * | 2016-06-13 | 2016-08-10 | 国网江苏省电力公司电力科学研究院 | Simultaneous acquisition test circuit used for electric energy and clock pulses of electric energy meter |
| US11466884B2 (en) | 2017-09-28 | 2022-10-11 | Honeywell International Inc. | Actuators with condition tracking |
| CN109581908A (en) * | 2017-09-28 | 2019-04-05 | 霍尼韦尔国际公司 | The actuator tracked using condition |
| CN108037343A (en) * | 2017-10-23 | 2018-05-15 | 国网北京市电力公司 | A kind of voltage monitoring Management System Data deepens analysis method |
| CN107942281A (en) * | 2017-10-30 | 2018-04-20 | 华立科技股份有限公司 | The statistical method of electric energy meter rate of qualified voltage |
| CN108227678A (en) * | 2018-01-04 | 2018-06-29 | 广东电网有限责任公司电力科学研究院 | A kind of power distribution network no-voltage fault diagnostic method and device based on metering automation system |
| CN109490611B (en) * | 2018-10-29 | 2021-03-05 | 宁波三星智能电气有限公司 | Time statistical method for embedded equipment |
| CN109490611A (en) * | 2018-10-29 | 2019-03-19 | 宁波三星智能电气有限公司 | A kind of time counting method of embedded device |
| CN110244805A (en) * | 2019-06-19 | 2019-09-17 | 河北腾瑞电力设备科技有限公司 | A kind of intelligent electricity consumption information acquisition termination rack |
| CN110456265A (en) * | 2019-08-16 | 2019-11-15 | 武汉合康智能电气有限公司 | The detection method of relay in a kind of charging pile |
| CN110907716B (en) * | 2019-10-14 | 2022-02-08 | 深圳供电局有限公司 | Method and device for judging voltage deviation isolation effect, power supply system, computer equipment and storage medium |
| CN110907716A (en) * | 2019-10-14 | 2020-03-24 | 深圳供电局有限公司 | Method and device for judging voltage deviation isolation effect, power supply system, computer equipment and storage medium |
| CN112487358A (en) * | 2020-09-28 | 2021-03-12 | 宁波三星医疗电气股份有限公司 | Method for calculating interval average value of electric energy meter acquisition object |
| CN112487358B (en) * | 2020-09-28 | 2024-07-26 | 宁波三星医疗电气股份有限公司 | Calculation method for interval average value of electric energy meter acquisition object |
| CN112946562A (en) * | 2021-02-07 | 2021-06-11 | 南方电网数字电网研究院有限公司 | Power failure protection method and device for double-core intelligent electric meter and double-core intelligent electric meter |
| CN112946562B (en) * | 2021-02-07 | 2023-02-24 | 南方电网数字电网研究院有限公司 | Power failure protection method and device for double-core intelligent electric meter and double-core intelligent electric meter |
| CN112782642A (en) * | 2021-03-02 | 2021-05-11 | 深圳供电局有限公司 | Voltage qualified rate recording method and device of double-core intelligent electric meter |
| CN113064803A (en) * | 2021-03-25 | 2021-07-02 | 深圳供电局有限公司 | Power failure event recording method and device for double-core intelligent electric meter and computer equipment |
| CN114252841A (en) * | 2021-12-31 | 2022-03-29 | 广东电网有限责任公司 | Voltage monitoring method and device for intelligent electric meter |
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