CN105319528B - A kind of operating condition method of inspection of electric energy meter - Google Patents
A kind of operating condition method of inspection of electric energy meter Download PDFInfo
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- CN105319528B CN105319528B CN201510889614.4A CN201510889614A CN105319528B CN 105319528 B CN105319528 B CN 105319528B CN 201510889614 A CN201510889614 A CN 201510889614A CN 105319528 B CN105319528 B CN 105319528B
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Abstract
The invention discloses the operating condition method of inspection of the comprehensive and accurate electric energy meter of a kind of efficient and inspection result.The method of inspection classifies the data of collection and calculates electric energy meter operating status value R by collecting the basic information data and field operational data of electric energy meterM, pass through the correspondence of default electric energy meter operating condition value and operating status, determine the actual motion state corresponding to the actual operating mode value of electric energy meter, the method of inspection is efficient, be not in since artificial origin causes the device fails of script normal operation, the method of inspection considers primary current percentage, primary voltage percentage, power-factor of load, voltage-form distortion rate, non-equilibrium among three phase voltages, environment temperature, influence of the envionmental humidity to electric energy meter, it can realize the complete examination of electric energy meter operating condition, the inspection result that guarantee is finally drawn is accurate, comprehensively, reliability is high.It is adapted to promote and apply in energy metering equipment state assessment technical field.
Description
Technical field
The present invention relates to energy metering equipment state assessment technical field, the operating condition of especially a kind of electric energy meter is examined
Method.
Background technology
In order to ensure that electric energy meter is capable of the reliability of normal operation and its continuous data, it usually needs the operation to electric energy meter
Operating mode is remotely estimated that the existing electric energy meter operating condition method of inspection is mostly the manually inspection by the way of desk checking
The mode tested needs the substantial amounts of calculating process for manually carrying out field test and complexity, and work efficiency is low；Secondly, manually to electricity
When energy table carries out live accuracy test, repetitious operation is carried out to electric energy meter, causes the equipment of script normal operation to occur
Failure, there are larger potential faults；Electric energy meter is set in addition, the existing electric energy meter operating condition method of inspection is only simple
Get ready and be badly detected, and the condition monitoring of electric energy meter is often ignored, and influenced sometimes caused by the failure of this part
Very larger, therefore, the existing electric energy meter operating condition method of inspection can not achieve the complete examination of electric energy meter operating condition, lead
The operating condition inspection result inaccuracy finally drawn is caused, and easily error causes inspection result reliability low for manual intervention,
The operating condition dynamic security stability of electric energy electric energy meter can not be accurately grasped, and then can not also ensure each main electric energy meter peace
Entirely, stablize, accurate operation, lack and accident treatment information is tracked and analyzed into Mobile state, it is impossible to catastrophe failure into Mobile state
Control.
The content of the invention
The technical problems to be solved by the invention are to provide the comprehensive and accurate electric energy meter of a kind of efficient and inspection result
The operating condition method of inspection.
The technical solution adopted by the present invention to solve the technical problems is：The operating condition method of inspection of the electric energy meter, bag
Include following steps：
A, the basic information data and field operational data of electric energy meter are collected；
B, classify to data, split data into two categories below：Electric energy meter basic information data, electric energy meter monitoring number
According to；
C, electric energy meter operating condition value R is calculated according to electric energy meter basic information data, electric energy meter monitoring dataU；By pre-
If electric energy meter operating condition value and operating status correspondence, determine the reality corresponding to the actual operating mode value of electric energy meter
Border operating status.
It is further the electric energy meter operating condition value RMIt is calculated using equation below：
And ωMI+ωMU+ωMcos+ωMTHDU+ωMdU+ωMT+ωMH=1；
Wherein, IMFor the primary current percentage value of electric energy meter, the primary current hundred of electric energy meter
Score value refers to the ratio for monitoring the rated current of obtained electric energy meter primary current and electric energy meter on-line, IMmaxFor the one of electric energy meter
Primary current percent maximum value；
Wherein Δ UM
For the voltage deviation percentage value of electric energy meter, Δ UMlimFor the voltage deviation limit value of electric energy meter；ΔUM=UM- 1, UMFor electric energy meter
Primary voltage percentage value, the primary voltage percentage value of electric energy meter refer to electric energy meter primary voltage and electric energy meter that on-line monitoring obtains
Rated voltage ratio；
Wherein,For once bearing for electric energy meter
Carry power factor,For the lower limit of a power-factor of load of electric energy meter；
Its
In, THDUFor the voltage-form distortion rate of electric energy meter, THDUlimFor the upper limit value of the voltage-form distortion rate of electric energy meter；
Wherein, dUFor the three-phase of electric energy meter
Voltage unbalance factor, dUlimFor the upper limit value of electric energy meter；
Wherein, TMFor the ambient temperature value residing for electric energy meter, TMnFor electric energy meter
Nominal environment temperature value, CTM1And CTM2Cause the change rate coefficient of variation for temperature；
Wherein, HMFor the environmental wet angle value residing for electric energy meter, HMnFor electric energy meter requirement
Nominal environment humidity, CHMCause the change rate of variation for humidity.
It is further the ωMI、ωMU、ωMcos、ωMTHDU、ωMdU、ωMT、ωMHDetermine with the following method, the party
Method comprises the following steps：
G1, determine order relation：In { EIM、EUM、ETHDU、EdU、ETM、EHMIn select proportion maximum a type note
For G1 *；Then the type that proportion maximum is selected in remaining six types is denoted as G2 *；Selected in remaining five types
A type for going out proportion maximum is denoted as G3 *, the type that proportion maximum is selected in remaining four types is denoted as G4 *,
The type that proportion maximum is selected in remaining three types is denoted as G5 *, proportion maximum is selected in remaining two types
One type is denoted as G6 *, last remaining type is denoted as G7 *, its order relation is G1 *＞ G2 *＞ G3 *＞ G4 *＞ G5 *＞ G6 *＞ G7 *,
Wherein G1 *＞ G2 *Represent type G1 *Proportion be greater than or not less than G2 *, thus determine EIM、EUM、ETHDU、EdU、
ETM、EHMOrder relation；
The ratio in judgement of g2, adjacent type proportion size：Adjacent type Gk-1 *With Gk *Between the ratio between proportion size Gk-1 */
Gk *=ηk, k=7,6,5,4,3,2, according to Gk-1 *With Gk *Proportion size, ηkValue range be 1.0-1.8；
G3, proportionality coefficient calculate：G2 steps are drawn into ηkValue brings equation below into：
G can be calculated1 *、G2 *、G3 *、G4 *、G5 *、G6 *、G7 *Weight vector ω=[ω1,ω2,ω3,ω4,ω5,ω6,
ω7], ω1,ω2,ω3,ω4,ω5,ω6,ω7Corresponding G1 *、G2 *、G3 *、G4 *、G5 *、G6 *、G7 *Weights, closed according to definite sequence
System, which can correspond to, draws ωMI、ωMU、ωMcos、ωMTHDU、ωMdU、ωMT、ωMHValue.
Beneficial effects of the present invention：The operating condition method of inspection of the electric energy meter is by collecting the basic information number of electric energy meter
According to this and field operational data, classified to the data of collection and calculate electric energy meter operating condition value RM, pass through default electricity
The correspondence of energy table operating condition value and operating status, determines the actual motion corresponding to the actual operating mode value of electric energy meter
State, the method for inspection are that the operating status of electric energy meter is drawn by the analysis to data, without manually carrying out field test, effect
Rate is high；Secondly, reduce artificial intervention, be not in since artificial origin causes the equipment of script normal operation that event occurs
Barrier, equipment fault hidden danger are relatively low；Furthermore the method for inspection considers primary current percentage, primary voltage percentage, once bears
Power factor, voltage-form distortion rate, non-equilibrium among three phase voltages, environment temperature, envionmental humidity are carried to the shadow of electric energy meter
Ring, it is possible to achieve the complete examination of electric energy meter operating condition, ensure the operating condition inspection result that finally draws it is accurate, comprehensively,
Reliability is high, can accurately grasp the dynamic security stability of electric energy electric energy meter operating condition, and then ensure each main electric energy meter
Safe and stable, accurate operation, can track and analyze into Mobile state to accident treatment information, so as to catastrophe failure into action
State controls.
Embodiment
The operating condition method of inspection of electric energy meter of the present invention, comprises the following steps：
A, the basic information data and field operational data of electric energy meter are collected；The basic information data of electric energy meter can lead to
Cross existing metering production scheduling platform (MDS) to obtain, metering production scheduling platform (MDS) summarizes all of the electric energy meter supply of material
Basic information, when collecting the basic information data of electric energy meter, need to only call the related data of metering production scheduling platform storage
；The field operational data of electric energy meter can be obtained by existing power information acquisition system, power information acquisition system
The collection monitoring of the Various types of data such as metering electricity, operating condition and the logout of electric energy meter can be achieved, wherein, on-line monitoring with
Intelligent diagnostics module can carry out the operating condition of electric energy meter by the comparison analysis and data mining to gathered data, event
Diagnosis and analysis, find the abnormal conditions such as electricity, load in time, when collecting the field operational data of electric energy meter, only need to call
The related data of power information acquisition system collection；
B, classify to data, split data into two categories below：Electric energy meter basic information data, electric energy meter monitoring number
According to；
C, electric energy meter operating condition value R is calculated according to electric energy meter basic information data, electric energy meter monitoring dataM；By pre-
If electric energy meter operating condition value and operating status correspondence, determine the reality corresponding to the actual operating mode value of electric energy meter
Border operating status.
The correspondence of electric energy meter operating condition value and operating status is as shown in the table：
The operating condition method of inspection of the electric energy meter runs number by the basic information data and scene for collecting electric energy meter
According to being classified to the data of collection and calculate electric energy meter operating condition value RM, by default electric energy meter operating condition value with
The correspondence of operating status, determines the actual motion state corresponding to the actual operating mode value of electric energy meter, the method for inspection
It is the operating status that electric energy meter is drawn by the analysis to data, it is efficient without manually carrying out field test；Secondly, reduce
Artificial intervention, is not in since artificial origin causes the device fails of script normal operation, equipment fault hidden danger
It is relatively low；Furthermore the method for inspection considers primary current percentage, primary voltage percentage, the power-factor of load, a voltage
The influence of irregularity of wave form, non-equilibrium among three phase voltages, environment temperature, envionmental humidity to electric energy meter, it is possible to achieve electric energy
The complete examination of table operating condition, the operating condition inspection result that guarantee is finally drawn is accurately, comprehensive, reliability is high, Ke Yizhun
The dynamic security stability of electric energy electric energy meter operating condition is really grasped, and then ensures that each main electric energy meter is safe and stable, accurate fortune
OK, accident treatment information can be tracked and analyzed into Mobile state, so as to carry out dynamic control to catastrophe failure.
The electric energy meter operating condition value RMIt is calculated using equation below：
And ωMI+ωMU+ωMcos+ωMTHDU+ωMdU+ωMT+ωMH=1；
Wherein, IMFor the primary current percentage value of electric energy meter, the primary current hundred of electric energy meter
Score value refers to the ratio for monitoring the rated current of obtained electric energy meter primary current and electric energy meter on-line, IMmaxFor the one of electric energy meter
Primary current percent maximum value, its maximum are 120%；
Wherein Δ UM
For the voltage deviation percentage value of electric energy meter, Δ UMlimFor the voltage deviation limit value of electric energy meter, its voltage deviation limit value is ± 5%；
ΔUM=UM- 1, UMFor the primary voltage percentage value of electric energy meter, the primary voltage percentage value of electric energy meter refers to that on-line monitoring obtains
The ratio of the rated voltage of electric energy meter primary voltage and electric energy meter；
Wherein,For once bearing for electric energy meter
Carry power factor,For the lower limit of a power-factor of load of electric energy meter, its lower limit is 0.5；
Its
In, THDUFor the voltage-form distortion rate of electric energy meter, THDUlimFor the upper limit value of the voltage-form distortion rate of electric energy meter, its upper limit
It is worth for 5%；
Wherein, dUFor the three-phase of electric energy meter
Voltage unbalance factor, dUlimFor the upper limit value of electric energy meter, its upper limit value is 4%；
Wherein, TMFor the ambient temperature value residing for electric energy meter, TMnFor electric energy meter
Nominal environment temperature value, CTM1And CTM2Cause the change rate coefficient of variation for temperature；According to electric power mutual-inductor JJG1021-2007
Standard verification, electric energy meter error caused by environment temperature independent role, which changes, is no more than elementary error limit value 1/4, in test condition
Temperature range is -25~55 DEG C, in rated temperature TMnIt is deteriorated caused by lower close to 0, and when temperature is far beyond the upper limit, lower limit model
When enclosing, change caused by it is close to elementary error limit value 1/4, nominal environment temperature TMnFor 25 DEG C, CTM1And CTM2Draw for temperature
The change rate coefficient being deteriorated is acted, takes C respectivelyTM1=2, CTM2=3；
Wherein, HMFor the environmental wet angle value residing for electric energy meter, HMnFor electric energy meter requirement
Nominal environment humidity, CHMCause the change rate of variation for humidity, according in electric power mutual-inductor JJG1021-2007 standard verifications
Provide that envionmental humidity is not more than 95%, electric energy meter error change caused by ambient humidity independent role is no more than elementary error
Limit value 1/8, when ambient humidity is less than specified humidity HMnWhen it is corresponding be deteriorated close to 0, nominal environment humidity HMnIt is wet for 65%
Degree causes the change rate C of variationHMFor 5%.
The electric energy meter operating condition value R calculated using the above methodMAccurately, comprehensively, reliability it is high, can accurately grasp
The operating condition dynamic security stability of electric energy meter, and then ensure that electric energy meter is safe and stable, accurate operation, can be to electric energy meter
Accident treatment information is tracked and analyzed into Mobile state, so as to carry out dynamic control to voltage transformer catastrophe failure.
In the above-described embodiment, the ωMI、ωMU、ωMcos、ωMTHDU、ωMdU、ωMT、ωMHClassical layer can be used
Fractional analysis show that still, this method is not easy to construct the differentiation battle array for meeting coherence request, therefore, the present invention provides
A kind of simple effective method determines weights ωMI、ωMU、ωMcos、ωMTHDU、ωMdU、ωMT、ωMH, this method includes following
Step：
G1, determine order relation：In { EIM、EUM、ETHDU、EdU、ETM、EHMIn select proportion maximum a type note
For G1 *；Then the type that proportion maximum is selected in remaining six types is denoted as G2 *；Selected in remaining five types
A type for going out proportion maximum is denoted as G3 *, the type that proportion maximum is selected in remaining four types is denoted as G4 *,
The type that proportion maximum is selected in remaining three types is denoted as G5 *, proportion maximum is selected in remaining two types
One type is denoted as G6 *, last remaining type is denoted as G7 *, its order relation is G1 *＞ G2 *＞ G3 *＞ G4 *＞ G5 *＞ G6 *＞ G7 *,
Wherein G1 *＞ G2 *Represent type G1 *Proportion be greater than or not less than G2 *, thus determine EIM、EUM、ETHDU、EdU、ETM、
EHMOrder relation；
The ratio in judgement of adjacent type proportion size：Adjacent type Gk-1 *With Gk *Between the ratio between proportion size Gk-1 */Gk *
=ηk, k=7,6,5,4,3,2, according to Gk-1 *With Gk *Proportion size, ηkValue range be 1.0-1.8；ηkThe value of judgement
It is regular as described below：
G3, proportionality coefficient calculate：G2 steps are drawn into ηkValue brings equation below into：
G can be calculated1 *、G2 *、G3 *、G4 *、G5 *、G6 *、G7 *Weight vector ω=[ω1,ω2,ω3,ω4,ω5,ω6,
ω7], ω1,ω2,ω3,ω4,ω5,ω6,ω7Corresponding G1 *、G2 *、G3 *、G4 *、G5 *、G6 *、G7 *Weights, closed according to definite sequence
System, which can correspond to, draws ωMI、ωMU、ωMcos、ωMTHDU、ωMdU、ωMT、ωMHValue.
The weights drawn using the above method are more tallied with the actual situation primary current percentage, the primary voltage of middle electric energy meter
Percentage, the power-factor of load, voltage-form distortion rate, non-equilibrium among three phase voltages, environment temperature, an envionmental humidity
Shared proportion, can cause the operating condition state more phase for the operating condition state value and reality for finally drawing electric energy meter
Symbol, its matching degree and accuracy are higher.
Claims (2)
1. the operating condition method of inspection of a kind of electric energy meter, it is characterised in that comprise the following steps：
A, the basic information data and field operational data of electric energy meter are collected；
B, classify to data, split data into two categories below：Electric energy meter basic information data, electric energy meter monitoring data；
C, electric energy meter operating condition value R is calculated according to electric energy meter basic information data, electric energy meter monitoring dataM, pass through default electricity
The correspondence of energy table operating condition value and operating status, determines the actual motion corresponding to the actual operating mode value of electric energy meter
State；
The electric energy meter operating condition value RMIt is calculated using equation below：
And ωMI+ωMU+ωMcos+ωMTHDU+ωMdU+ωMT+ωMH=1；
Wherein, IMFor the primary current percentage value of electric energy meter, the primary current percentage value of electric energy meter
Refer to the ratio for monitoring the rated current of obtained electric energy meter primary current and electric energy meter on-line, IMmaxFor the once electric of electric energy meter
Flow percent maximum value；
Wherein Δ UMFor electricity
The voltage deviation percentage value of energy table, Δ UMlimFor the voltage deviation limit value of electric energy meter；ΔUM=UM- 1, UMFor electric energy meter once
Voltage percentage value, the primary voltage percentage value of electric energy meter refer to the volume for monitoring obtained electric energy meter primary voltage and electric energy meter on-line
The ratio of constant voltage；
Wherein,For the once load work(of electric energy meter
Rate factor,For the lower limit of a power-factor of load of electric energy meter；
Wherein,
THDUFor the voltage-form distortion rate of electric energy meter, THDUlimFor the upper limit value of the voltage-form distortion rate of electric energy meter；
Wherein, dUFor the three-phase voltage of electric energy meter
Degree of unbalancedness, dUlimFor the upper limit value of electric energy meter；
Wherein, TMFor the ambient temperature value residing for electric energy meter, TMnFor the specified of electric energy meter
Ambient temperature value, CTM1And CTM2Cause the change rate coefficient of variation for temperature；
Wherein, HMFor the environmental wet angle value residing for electric energy meter, HMnFor the volume of electric energy meter requirement
Determine ambient humidity, CHMCause the change rate of variation for humidity.
2. the operating condition method of inspection of electric energy meter as claimed in claim 1, it is characterised in that：The ωMI、ωMU、ωMcos、
ωMTHDU、ωMdU、ωMT、ωMHDetermine with the following method, this method comprises the following steps：
G1, determine order relation：In to select proportion maximum
One type is denoted as G1 *；Then the type that proportion maximum is selected in remaining six types is denoted as G2 *；In remaining five classes
The type that proportion maximum is selected in type is denoted as G3 *, the type that proportion maximum is selected in remaining four types is denoted as G4 *,
The type that proportion maximum is selected in remaining three types is denoted as G5 *, proportion maximum is selected in remaining two types
One type is denoted as G6 *, last remaining type is denoted as G7 *, its order relation is
WhereinRepresent type G1 *Proportion be greater than or not less than G2 *, thus determine EIM、EUM、ETHDU、EdU、
ETM、EHMOrder relation；
The ratio in judgement of g2, adjacent type proportion size：Adjacent type Gk-1 *With Gk *Between the ratio between proportion size Gk-1 */Gk *=
ηk, k=7,6,5,4,3,2, according to Gk-1 *With Gk *Proportion size, ηkValue range be 1.0-1.8；ηkThe value rule of judgement
It is then as described below：As type Gk-1 *With type Gk *During with same proportion, ηkValue range be 1.0, as type Gk-1 *Ratio
It is slightly higher than type G againk *Proportion when, ηkValue range be 1.2, as type Gk-1 *Proportion apparently higher than type Gk *Ratio
During weight, ηkValue range be 1.4, as type Gk-1 *Proportion be higher than type G stronglyk *Proportion when, ηkValue range be
1.6, as type Gk-1 *Proportion be extremely higher than type Gk *Proportion when, ηkValue range be 1.8, ηkTwo adjacent judgements
Intermediate value is 1.1,1.3,1.5,1.7；
G3, proportionality coefficient calculate：G2 steps are drawn into ηkValue brings equation below into：
Wherein, m=7
G can be calculated1 *、G2 *、G3 *、G4 *、G5 *、G6 *、G7 *Weight vector ω=[ω1,ω2,ω3,ω4,ω5,ω6,
ω7], ω1,ω2,ω3,ω4,ω5,ω6,ω7Corresponding G1 *、G2 *、G3 *、G4 *、G5 *、G6 *、G7 *Weights, closed according to definite sequence
System, which can correspond to, draws ωMI、ωMU、ωMcos、ωMTHDU、ωMdU、ωMT、ωMHValue.
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| CN106646321B (en) * | 2016-11-18 | 2023-10-27 | 云南电网有限责任公司电力科学研究院 | Synchronous calibration method and system for direct current transformer |
| CN106772189B (en) * | 2016-11-18 | 2023-11-21 | 云南电网有限责任公司电力科学研究院 | Synchronous calibration method and system for direct-current voltage transformer |
| CN106680759A (en) * | 2017-01-05 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Operational monitoring estimation method and apparatus for gateway metering equipment |
| CN109597015A (en) * | 2018-12-21 | 2019-04-09 | 国网山西省电力公司长治供电公司 | A kind of electric energy meter method for detecting operation state |
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