CN105467354B - A kind of operating condition method of inspection of metering device - Google Patents

Abstract

The invention discloses the operating condition methods of inspection of the comprehensive and accurate metering device of a kind of efficient and inspection result.The method of inspection passes through calculating current mutual inductor operating condition value R_I, voltage transformer operating condition value R_U, electric energy meter operating condition value R_MFinally calculate the operating condition value R of entire metering device, pass through the correspondence of default metering device operating condition value and operating status, determine the actual motion state corresponding to the actual operating mode value of metering device, the method of inspection is the operating status by drawing metering device to the analysis of data, it is efficient without manually carrying out field test；The method of inspection considers the operating condition state inspection to electric energy meter, current transformer and voltage transformer, can realize the complete examination of metering device operating condition, ensures that the operating condition inspection result finally drawn is accurate, comprehensive, reliability is high.It is suitble to promote and apply in energy metering equipment state assessment technical field.

Description

A kind of operating condition method of inspection of metering device

Technical field

The present invention relates to energy metering equipment state assessment technical field, the operating condition inspection of especially a kind of metering device Proved recipe method.

Background technology

In order to ensure that electric energy metering device is capable of the reliability of normal operation and its continuous data, it usually needs to electric energy meter The operating condition of amount device is remotely estimated that the existing metering device operating condition method of inspection is mostly using desk checking Mode, the mode of desk checking need it is substantial amounts of manually carry out field test and complicated calculating process, work efficiency is low；Its It is secondary, manually when carrying out live accuracy test to electric energy meter, the current loop of checklist need to be connected with standard scale, voltage circuit It is in parallel with standard scale, the operations such as the wire connection terminal on measuring screen is unclamped and be screwed, repeatedly after often have wire connection terminal Phenomena such as loosening or stripped thread, cause the device fails of script normal operation, there are larger potential faults；Furthermore manually The load of secondary circuit there are certain requirements during field test electrical energy meter accuracy, i.e., active power need to be more than 10W, and power factor needs More than 0.5, once run into load or power factor it is too low if cannot test work, cause to examine work can not be successfully into Row；In addition, metering device includes electric energy meter, PT and CT and its secondary circuit, one link of any of which can all influence metering Accuracy, the existing metering device operating condition method of inspection only pay attention to the detection to electric energy meter operating condition, and mutual induction of voltage The detection of the operating condition of device and current transformer is often ignored, and influences to be sometimes up to electric energy meter caused by the failure of this part Tens times of error, it is impossible to realize the complete examination of metering device operating condition, the operating condition finally drawn is caused to examine knot Fruit is inaccurate, and easily error causes inspection result reliability low for manual intervention, can not accurately grasp electric energy metering device Operating condition dynamic security stability, and then can not also ensure that each main metering device is safe and stable, accurate operation, lacks pair Accident treatment information is tracked and analyzed into Mobile state, it is impossible to carry out dynamic control to catastrophe failure.

The content of the invention

The technical problems to be solved by the invention are to provide a kind of comprehensive and accurate metering device 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 metering device, Comprise the following steps：

A, the basic information data and field operational data of metering device are collected；

B, classify to data, split data into following six class：Current transformer basic information data, current transformer Monitoring data, voltage transformer basic information data, voltage transformer monitoring data, electric energy meter basic information data, electric energy meter Monitoring data；

C, according to current transformer basic information data, current transformer monitoring data calculating current mutual inductor operating condition Value R_I；

D, voltage transformer operating condition is calculated according to voltage transformer basic information data, voltage transformer monitoring data Value R_U；

E, electric energy meter basic information data, electric energy meter monitoring data calculate electric energy meter operating condition value R_M；

F, the operating condition value R of metering device is calculated, passes through default metering device operating condition value and operating status Correspondence determines the actual motion state corresponding to the actual operating mode value of metering device, the R=ω_IR_I+ω_UR_U+ ω_MR_M, wherein, R_IFor current transformer operating condition value, ω_IFor the weights of current transformer operating condition, R_UFor mutual induction of voltage Device operating condition value, ω_UFor the weights of voltage transformer operating condition, R_MFor electric energy meter operating condition value, ω_MIt is transported for electric energy meter The weights of row operating mode, and ω_I+ω_U+ω_M=1.

It is further the weights ω_I、ω_U、ω_MIt determines with the following method, this method comprises the following steps：

G1, order relation is determined：In { R_I、R_U、R_MIn select a type of proportion maximum and be denoted as R₁ ^*；Then remaining The type that proportion maximum is selected in three types is denoted as R₂ ^*；Last remaining type is denoted as R after selecting twice₃ ^*, Order relation is R₁ ^*＞ R₂ ^*＞ R₃ ^*, wherein R₁ ^*＞ R₂ ^*Represent type R₁ ^*Proportion be greater than or not less than R₂ ^*, thus determine R_I、 R_U、R_MOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type R_k-1 ^*With R_k ^*Between the ratio between proportion size R_k-1 ^*/ R_k ^*=η_k, k=3,2, according to R_k-1 ^*With R_k ^*Proportion size, η_kValue range be 1.0-1.8；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=3

R can be calculated₁ ^*、R₂ ^*、R₃ ^*Weight vector ω=[ω₁,ω₂,ω₃], ω₁、ω₂、ω₃Corresponding R₁ ^*、R₂ ^*、R₃ ^* Weights, can be corresponded to according to definite order relation and draw ω_I、ω_U、ω_MValue.

It is further the current transformer operating condition value R_IIt is calculated using equation below：

The R_I=ω_ISE_SI+ω_IIE_II+ω_ITE_TI+ω_IHE_HI+ω_IRE_RI+ω_IME_MI, and ω_IS+ω_II+ω_IT+ω_IH+ ω_IR+ω_IM=1；

Wherein, S_IThe two of current transformer are obtained for on-line monitoring Secondary load, S_InFor the rated load of current transformer, S_I0For the secondary load lower limiting value of current transformer；

Wherein, I_IFor the primary current percentage value of current transformer, the one of current transformer Primary current percentage value refers to the ratio for monitoring the rated current of obtained current transformer primary current and current transformer on-line, I_ImaxFor the primary current percent maximum value of current transformer；

Wherein, T_IFor the ambient temperature value residing for current transformer, T_InIt is mutual for electric current The nominal environment temperature value of sensor, C_TI1And C_TI2Cause the variation rate coefficient of variation for temperature；

Wherein, H_IFor the environmental wet angle value residing for current transformer, H_InFor Current Mutual Inductance The nominal environment humidity of device, C_HICause the change rate of variation for humidity；

Wherein, t_RIThere is the time of defluidization, τ for closest primary current mutual inductor_RIt declines for remanent magnetism Subtract time constant；

Wherein, M_ITo close on Primary Conductor magnetic field intensity, M_InFor specified magnetic field intensity, C_MIFor Magnetic field intensity causes the variation rate coefficient of variation.

It is further the weights ω_IS、ω_II、ω_IT、ω_IH、ω_IR、ω_IMIt determines with the following method, this method bag Include following steps：

G1, order relation is determined：In { E_SI、E_II、E_TI、E_HI、E_RI、E_MIIn select a type of proportion maximum and be denoted as E₁ ^*； Then the type that proportion maximum is selected in remaining five types is denoted as E₂ ^*；Proportion is selected in remaining four types A maximum type is denoted as E₃ ^*, the type that proportion maximum is selected in remaining three types is denoted as E₄ ^*, remaining The type that proportion maximum is selected in two types is denoted as E₅ ^*, last remaining type is denoted as E₆ ^*, order relation E₁ ^*＞ E₂ ^* ＞ E₃ ^*＞ E₄ ^*＞ E₅ ^*＞ E₆ ^*, wherein E₁ ^*＞ E₂ ^*Represent type E₁ ^*Proportion be greater than or not less than E₂ ^*, thus determine E_SI、 E_II、E_TI、E_HI、E_RI、E_MIOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type E_k-1 ^*With E_k ^*Between the ratio between proportion size E_k-1 ^*/ E_k ^*=η_k, k=6,5,4,3,2, according to E_k-1 ^*With E_k ^*Proportion size, η_kValue range be 1.0-1.8；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=6

E can be calculated₁ ^*、E₂ ^*、E₃ ^*、E₄ ^*、E₅ ^*、E₆ ^*Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆], ω₁,ω₂,ω₃,ω₄,ω₅,ω₆Corresponding E₁ ^*、E₂ ^*、E₃ ^*、E₄ ^*、E₅ ^*、E₆ ^*Weights, can be corresponded to according to definite order relation Draw ω_IS、ω_II、ω_IT、ω_IH、ω_IR、ω_IMValue.

It is further the voltage transformer operating condition value R_UIt is calculated using equation below：

The R_U=ω_USE_SU+ω_UΔE_ΔU+ω_UTE_TU+ω_UHE_HU+ω_UME_MU+ω_UEE_EU+ω_UFE_FU,

And ω_US+ω_UΔ+ω_UT+ω_UH+ω_UM+ω_UE+ω_UF=1；

Wherein, S_UVoltage transformer is obtained for on-line monitoring Secondary load, S_UnFor the rated load of current transformer, S_U0For the secondary load lower limiting value of voltage transformer；

Wherein, Δ U_U To monitor the voltage deviation percentage value of obtained voltage transformer, Δ U on-line_UlimFor the voltage deviation limit value of voltage transformer；

Wherein, T_UFor the ambient temperature value residing for voltage transformer, T_UnFor voltage The nominal environment temperature value of transformer request, C_TU1And C_TU2Cause the variation rate coefficient of variation for temperature；

Wherein, H_UFor the environmental wet angle value residing for voltage transformer, H_UnIt is mutual for voltage The nominal environment humidity of sensor requirement, C_HUCause the change rate of variation for humidity；

Wherein, M_UTo close on Primary Conductor magnetic field intensity, M_UnFor specified magnetic field intensity, C_MU Cause the variation rate coefficient of variation for magnetic field intensity；

Wherein, E_UThe external electronic field of voltage transformer, E are obtained for on-line monitoring_UnFor Nominal electric field, C_ECause the variation rate coefficient of variation for electric field strength；

Wherein, F_UThe frequency of voltage transformer, F are obtained for on-line monitoring_UnTo be specified Frequency, C_F1And C_F1Cause the variation rate coefficient of variation for frequency.

It is further the weights ω_US、ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UFIt determines with the following method, it should Method comprises the following steps：

G1, order relation is determined：In { E_SU、E_ΔU、E_TU、E_HU、E_MU、E_EU、E_FUIn select a type of proportion maximum and be denoted as H₁ ^*；Then the type that proportion maximum is selected in remaining six types is denoted as H₂ ^*；It is selected in remaining five types One type of proportion maximum is denoted as H₃ ^*, the type that proportion maximum is selected in remaining four types is denoted as H₄ ^*, remaining Under three types in select a type of proportion maximum and be denoted as H₅ ^*, the one of proportion maximum is selected in remaining two types A type is denoted as H₆ ^*, last remaining type is denoted as H₇ ^*, order relation H₁ ^*＞ H₂ ^*＞ H₃ ^*＞ H₄ ^*＞ H₅ ^*＞ H₆ ^*＞ H₇ ^*, Middle H₁ ^*＞ H₂ ^*Represent type H₁ ^*Proportion be greater than or not less than H₂ ^*, thus determine E_SU、E_ΔU、E_TU、E_HU、E_MU、E_EU、E_FU's Order relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type H_k-1 ^*With H_k ^*Between the ratio between proportion size H_k-1 ^*/ H_k ^*=η_k, k=7,6,5,4,3,2, according to H_k-1 ^*With H_k ^*Proportion size, η_kValue range be 1.0-1.8；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=7

H can be calculated₁ ^*、H₂ ^*、H₃ ^*、H₄ ^*、H₅ ^*、H₆ ^*、H₇ ^*Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆, ω₇], ω₁,ω₂,ω₃,ω₄,ω₅,ω₆,ω₇Corresponding H₁ ^*、H₂ ^*、H₃ ^*、H₄ ^*、H₅ ^*、H₆ ^*、H₇ ^*Weights, closed according to definite sequence System, which can correspond to, draws ω_US、ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UFValue.

It is further the electric energy meter operating condition value R_MIt is calculated using equation below：

And ω_MI+ω_MU+ω_Mcos+ω_MTHDU+ω_MdU+ω_MT+ω_MH=1；

Wherein, I_MFor 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, I_MmaxFor the one of electric energy meter Primary current percent maximum value；

Wherein Δ U_M For the voltage deviation percentage value of electric energy meter, Δ U_MlimFor the voltage deviation limit value of electric energy meter；ΔU_M=U_M- 1, U_MFor 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 limiting value of a power-factor of load of electric energy meter；

Its In, THD_UFor the voltage-form distortion rate of electric energy meter, THD_UlimFor the upper limit value of the voltage-form distortion rate of electric energy meter；

Wherein, d_UFor the three-phase of electric energy meter Voltage unbalance factor, d_UlimFor the upper limit value of electric energy meter；

Wherein, T_MFor the ambient temperature value residing for electric energy meter, T_MnFor electric energy meter Nominal environment temperature value, C_TM1And C_TM2Cause the variation rate coefficient of variation for temperature；

Wherein, H_MFor the environmental wet angle value residing for electric energy meter, H_MnFor electric energy meter requirement Nominal environment humidity, C_HMCause the change rate of variation for humidity.

It is further the weights ω_MI、ω_MU、ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MHIt determines with the following method, This method comprises the following steps：

G1, order relation is determined：In select proportion A maximum type is denoted as G₁ ^*；Then the type that proportion maximum is selected in remaining six types is denoted as G₂ ^*；Remaining Under five types in select a type of proportion maximum and be denoted as G₃ ^*, the one of proportion maximum is selected in remaining four types A type is denoted as G₄ ^*, the type that proportion maximum is selected in remaining three types is denoted as G₅ ^*, in remaining two types In select a type of proportion maximum and be denoted as G₆ ^*, last remaining type is denoted as G₇ ^*, order relation G₁ ^*＞ G₂ ^*＞ G₃ ^*＞ G₄ ^*＞ G₅ ^*＞ G₆ ^*＞ G₇ ^*, wherein G₁ ^*＞ G₂ ^*Represent type G₁ ^*Proportion be greater than or not less than G₂ ^*, thus determine E_IM、E_UM、E_THDU、E_dU、E_TM、E_HMOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type G_k-1With G_kBetween the ratio between proportion size G_k-1/G_k =η_k, k=7,6,5,4,3,2, according to G_k-1With G_kProportion size, η_kValue range be 1.0-1.8；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=7

G can be calculated₁、G₂、G₃、G₄、G₅、G₆、G₇Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆,ω₇], ω₁,ω₂,ω₃,ω₄,ω₅,ω₆,ω₇Corresponding G₁、G₂、G₃、G₄、G₅、G₆、G₇Weights, can be right according to definite order relation It should draw ω_MI、ω_MU、ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MHValue.

Beneficial effects of the present invention：The operating condition method of inspection of the metering device is believed by collecting the basis of metering device Data and field operational data are ceased, to the data of collection classify simultaneously calculating current mutual inductor operating condition value R_I, voltage Mutual inductor operating condition value R_U, electric energy meter operating condition value R_M, the operating condition value R of entire metering device is finally calculated, by pre- If metering device operating condition value and operating status correspondence, determine corresponding to the actual operating mode value of metering device Actual motion state, which is the operating status by drawing metering device to the analysis of data, without manually into Row field test, it is efficient；Secondly, reduce artificial intervention, be not in since artificial origin causes script normal operation Device fails, equipment fault hidden danger is relatively low；Furthermore the method for inspection is considered to electric energy meter, current transformer and electricity The operating condition state of mutual inductor is pressed to examine, can realize the complete examination of metering device operating condition, ensures the fortune finally drawn Row operating mode inspection result is accurate, comprehensive, reliability is high, and the dynamic security that can accurately grasp electric energy metering device operating condition is steady It is qualitative, and then ensure that each main metering device is safe and stable, accurate operation, accident treatment information can be tracked into Mobile state And analysis, so as to carry out dynamic control to catastrophe failure.

Specific embodiment

The operating condition method of inspection of metering device of the present invention, comprises the following steps：

A, the basic information data and field operational data of metering device are collected；The basic information data of metering device can To be obtained by existing metering production scheduling platform (MDS), metering production scheduling platform (MDS) summarizes the metering device supply of material All basic informations, when collecting the basic information data of metering device, need to only call metering production scheduling platform storage Related data；The field operational data of metering device can be obtained by existing power information acquisition system, use telecommunications Breath acquisition system can realize the acquisition monitoring of the Various types of data such as metering electricity, operating condition and the logout of metering device, In, on-line monitoring can be by the comparison analysis and data mining to gathered data, event, to electric energy meter with intelligent diagnostics module Operating condition is diagnosed and analyzed, and finds the abnormal conditions such as electricity, load in time, is collecting the scene operation number of metering device According to when, only need to call power information acquisition system gather related data；

B, classify to data, split data into following six class：Current transformer basic information data, current transformer Monitoring data, voltage transformer basic information data, voltage transformer monitoring data, electric energy meter basic information data, electric energy meter Monitoring data；

C, according to current transformer basic information data, current transformer monitoring data calculating current mutual inductor operating condition Value R_I；

D, voltage transformer operating condition is calculated according to voltage transformer basic information data, voltage transformer monitoring data Value R_U；

E, electric energy meter basic information data, electric energy meter monitoring data calculate electric energy meter operating condition value R_M；

F, the operating condition value R of metering device is calculated, passes through default metering device operating condition value and operating status Correspondence determines the actual motion state corresponding to the actual operating mode value of metering device, the R=ω_IR_I+ω_UR_U+ ω_MR_M, wherein, R_IFor current transformer operating condition value, ω_IFor the weights of current transformer operating condition, R_UFor mutual induction of voltage Device operating condition value, ω_UFor the weights of voltage transformer operating condition, R_MFor electric energy meter operating condition value, ω_MIt is transported for electric energy meter The weights of row operating mode, and ω_I+ω_U+ω_M=1.

The correspondence of metering device operating condition value and operating status is as shown in the table：

The operating condition method of inspection of the metering device is transported by the basic information data and scene for collecting metering device Row data, to the data of collection classify simultaneously calculating current mutual inductor operating condition value R_I, voltage transformer operating condition value R_U, electric energy meter operating condition value R_M, the operating condition value R of entire metering device is finally calculated, is run by default metering device The correspondence of operating mode value and operating status determines the actual motion state corresponding to the actual operating mode value of metering device, The method of inspection is the operating status by drawing metering device to the analysis of data, without manually carrying out field test, efficiency It is high；Secondly, reduce artificial intervention, be not in since artificial origin causes the device fails of script normal operation, Equipment fault hidden danger is relatively low；Furthermore the method for inspection considers the operation work to electric energy meter, current transformer and voltage transformer Condition state is examined, and can realize the complete examination of metering device operating condition, ensures that the operating condition inspection result finally drawn is accurate Really, comprehensively, reliability it is high, can accurately grasp the dynamic security stability of electric energy metering device operating condition, and then ensure each Main metering device is safe and stable, accurate operation, accident treatment information can be tracked and analyzed into Mobile state, so as to tight Weight failure carries out dynamic control.

In the above-described embodiment, in the above-described embodiment, the weights ω_I、ω_U、ω_MClassical level may be employed Analytic approach show that still, this method is not easy to construct the differentiation battle array for meeting coherence request, and therefore, the present invention provides one Simple effective method is planted to determine weights ω_I、ω_U、ω_M, this method comprises the following steps：

G1, order relation is determined：In { R_I、R_U、R_MIn select a type of proportion maximum and be denoted as R₁ ^*；Then remaining The type that proportion maximum is selected in three types is denoted as R₂ ^*；Last remaining type is denoted as R after selecting twice₃ ^*, Order relation is R₁ ^*＞ R₂ ^*＞ R₃ ^*, wherein R₁ ^*＞ R₂ ^*Represent type R₁ ^*Proportion be greater than or not less than R₂ ^*, thus determine R_I、 R_U、R_MOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type R_k-1 ^*With R_k ^*Between the ratio between proportion size R_k-1 ^*/ R_k ^*=η_k, k=3,2, according to R_k-1 ^*With R_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kThe value rule of judgement is such as It is lower described：

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=3

R can be calculated₁ ^*、R₂ ^*、R₃ ^*Weight vector ω=[ω₁,ω₂,ω₃], ω₁、ω₂、ω₃Corresponding R₁ ^*、R₂ ^*、R₃ ^* Weights, can be corresponded to according to definite order relation and draw ω_I、ω_U、ω_MValue.

The weights drawn using the above method are more tallied with the actual situation middle electric energy meter, current transformer, voltage transformer institute The proportion accounted for can cause the metering device operating condition state value finally drawn and actual operating condition state more phase Symbol, matching degree and accuracy are higher.

The current transformer operating condition value R_IIt is calculated using equation below：The R_I=ω_ISE_SI+ω_IIE_II+ ω_ITE_TI+ω_IHE_HI+ω_IRE_RI+ω_IME_MI, and ω_IS+ω_II+ω_IT+ω_IH+ω_IR+ω_IM=1；

Wherein, S_IThe two of current transformer are obtained for on-line monitoring Secondary load, Current Transformer Secondary side do not allow to open a way, and load the smaller the better, the on-line testing side of current transformer secondary load Method is to obtain voltage U from transformer circuit beginning using wire laying mode at the scene₀, then current value is obtained from observation circuit, S_I= U₀×I₂；S_InFor the rated load of current transformer, S_I0For the secondary load lower limiting value of current transformer, when current transformer When secondary rated current is 5A, the secondary load lower limiting value S of current transformer_I0For 3.75VA, when the secondary volume of current transformer When constant current is 1A, the secondary load lower limiting value S of current transformer_I0For 1VA；

Wherein, I_IFor the primary current percentage value of current transformer, the one of current transformer Primary current percentage value refers to the ratio for monitoring the rated current of obtained current transformer primary current and current transformer on-line, I_ImaxFor the primary current percent maximum value of current transformer, maximum 120%；

Wherein, T_IFor the ambient temperature value residing for current transformer, T_InIt is mutual for electric current The nominal environment temperature value of sensor, according to electric power mutual-inductor JJG1021-2007 standard verifications, environment temperature independent role causes Current transformer error variation be no more than elementary error limit value 1/4, temperature range is -25~55 DEG C in test condition, in volume Constant temperature degree T_InBe deteriorated caused by lower close to 0, and when temperature is far beyond the upper limit, lower range, caused by variation close to Elementary error limit value 1/4, nominal environment temperature T_InFor 25 DEG C, C_TI1And C_TI2Cause the variation rate coefficient of variation for temperature, respectively Take C_TI1=2, C_TI2=3；

Wherein, H_IFor the environmental wet angle value residing for current transformer, H_InFor Current Mutual Inductance The nominal environment humidity of device, C_HICause the change rate of variation for humidity；According to electric power mutual-inductor JJG1021-2007 standard verifications For middle regulation envionmental humidity no more than 95%, current transformer error variation caused by ambient humidity independent role is no more than base This error limit 1/8, when ambient humidity is less than specified humidity H_InWhen be deteriorated accordingly close to 0, nominal environment humidity H_InFor 65%, humidity causes the change rate C of variation_HIFor 5%；

Wherein, t_RIThere is the time of defluidization, τ for closest primary current mutual inductor_RIt declines for remanent magnetism Subtract time constant, remanent magnetism damping time constant unit min；Current transformer is in the case where electric current declines suddenly, Current Mutual Inductance Device iron core will decline iron core magnetic conductivity, and influence accuracy of instrument transformers, current transformer JJG1021- there may be remanent magnetism It is provided in 2007 standard verifications, for the limit value that is deteriorated caused by remanence of current transformer independent role, no more than limit of intrinsic error The 1/3 of value, by sudden shutting off power supply, secondary winding in the case of high current, the reasons such as open circuit generate remanence of current transformer suddenly, It is mainly shown as secondary winding defluidization, remanent magnetism size is proportionate with load current percentage, as the time elapses remanent magnetism direct current Component gradually decays to 0, and the influence to current transformer error is also gradually reduced, and is remanent magnetism damping time constant τ_RFor 50min；

Wherein, M_ITo close on Primary Conductor magnetic field intensity, it is strong to close on Primary Conductor magnetic field Degree is limited to 100 μ T, M_InFor specified magnetic field intensity, C_MICause the variation rate coefficient of variation for magnetic field intensity；Electric power mutual-inductor It provides in JJG1021-2007 standard verifications, is limited for current transformer adjacent to variation caused by the independent role of Primary Conductor magnetic field Value, no more than the 1/4 of elementary error limit value, when magnetic field intensity is less than specified magnetic field intensity M_InWhen be deteriorated accordingly close to 0, volume Fixed-field intensity M_InFor 50 μ T, magnetic field intensity causes the variation rate coefficient C of variation_MIFor 10.

The current transformer operating condition value R calculated using the above method_IAccurately, comprehensively, reliability it is high, can be accurate The operating condition dynamic security stability of current transformer is grasped, and then ensures that current transformer is safe and stable, accurate operation, Current transformer accident treatment information can be tracked and analyzed into Mobile state, so as to current transformer catastrophe failure into action State controls.

In the above-described embodiment, the weights ω_IS、ω_II、ω_IT、ω_IH、ω_IR、ω_IMClassical level point may be employed Analysis method show that still, this method is not easy to construct the differentiation battle array for meeting coherence request, and therefore, the present invention provides one kind Simple effective method determines weights ω_IS、ω_II、ω_IT、ω_IH、ω_IR、ω_IM, this method comprises the following steps：

G1, order relation is determined：In { E_SI、E_II、E_TI、E_HI、E_RI、E_MIIn select a type of proportion maximum and be denoted as E₁ ^*； Then the type that proportion maximum is selected in remaining five types is denoted as E₂ ^*；Proportion is selected in remaining four types A maximum type is denoted as E₃ ^*, the type that proportion maximum is selected in remaining three types is denoted as E₄ ^*, remaining The type that proportion maximum is selected in two types is denoted as E₅ ^*, last remaining type is denoted as E₆ ^*, order relation E₁ ^*＞ E₂ ^* ＞ E₃ ^*＞ E₄ ^*＞ E₅ ^*＞ E₆ ^*, wherein E₁ ^*＞ E₂ ^*Represent type E₁ ^*Proportion be greater than or not less than E₂ ^*, thus determine E_SI、 E_II、E_TI、E_HI、E_RI、E_MIOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type E_k-1 ^*With E_k ^*Between the ratio between proportion size E_k-1 ^*/ E_k ^*=η_k, k=6,5,4,3,2, according to E_k-1 ^*With E_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kThe value of judgement It is regular as described below：

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=6

E can be calculated₁ ^*、E₂ ^*、E₃ ^*、E₄ ^*、E₅ ^*、E₆ ^*Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆], ω₁,ω₂,ω₃,ω₄,ω₅,ω₆Corresponding E₁ ^*、E₂ ^*、E₃ ^*、E₄ ^*、E₅ ^*、E₆ ^*Weights, can be corresponded to according to definite order relation Draw ω_IS、ω_II、ω_IT、ω_IH、ω_IR、ω_IMValue.

The weights drawn using the above method are more tallied with the actual situation the secondary load value of middle current transformer, primary current Percentage value, environment temperature, envionmental humidity, remanent magnetism, the proportion shared by neighbouring Primary Conductor magnetic field, can finally to draw The operating condition state value of current transformer is more consistent with actual operating condition state, and matching degree and accuracy are higher.

The voltage transformer operating condition value R_UIt is calculated using equation below：The R_U=ω_USE_SU+ω_UΔE_ΔU+ ω_UTE_TU+ω_UHE_HU+ω_UME_MU+ω_UEE_EU+ω_UFE_FU,

And ω_US+ω_UΔ+ω_UT+ω_UH+ω_UM+ω_UE+ω_UF=1；

Wherein, S_UVoltage transformer is obtained for on-line monitoring Secondary load, S_UnFor the rated load of current transformer, S_U0For the secondary load lower limiting value of voltage transformer, lower limiting value For 2.5VA；

Wherein, Δ U_U To monitor the voltage deviation percentage value of obtained voltage transformer, Δ U on-line_UlimFor the voltage deviation limit value of voltage transformer, Its voltage deviation is limited to ± 0.5%；

Wherein, T_UFor the ambient temperature value residing for voltage transformer, T_UnFor voltage The nominal environment temperature value of transformer request, C_TU1And C_TU2Cause the variation rate coefficient of variation for temperature；According to electric power mutual-inductor JJG1021-2007 standard verifications, voltage transformer error variation caused by environment temperature independent role are no more than limit of intrinsic error Value 1/4, temperature range is -25~55 DEG C in test condition, in rated temperature T_UnIt is deteriorated caused by lower close to 0, and works as temperature It is caused to change close to elementary error limit value 1/4, nominal environment temperature T during far beyond the upper limit, lower range_UnFor 25 DEG C, C_TU1And C_TU2Cause the variation rate coefficient of variation for temperature, take C respectively_TU1=2, C_TU2=3；

Wherein, H_UFor the environmental wet angle value residing for voltage transformer, H_UnIt is mutual for voltage The nominal environment humidity of sensor requirement, C_HUCause the change rate of variation for humidity；It is examined according to electric power mutual-inductor JJG1021-2007 Envionmental humidity is provided during calibration is accurate no more than 95%, voltage transformer error variation caused by ambient humidity independent role is not More than elementary error limit value 1/8, when ambient humidity is less than specified humidity H_UnWhen be deteriorated accordingly close to 0, nominal environment humidity H_UnFor 65%, humidity causes the change rate C of variation_HUFor 5%；

Wherein, M_UTo close on Primary Conductor magnetic field intensity, magnetic field intensity limit value is 100 μ T, M_UnFor specified magnetic field intensity, C_MUCause the variation rate coefficient of variation for magnetic field intensity；Electric power mutual-inductor JJG1021-2007 is examined It is provided during calibration is accurate, for the limit value that is deteriorated caused by the independent role of voltage transformer Primary Conductor magnetic field, no more than elementary error The 1/10 of limit value；It is deteriorated accordingly close to 0 when closing on Primary Conductor magnetic field intensity less than specified magnetic field intensity, specified magnetic field Intensity M_UFor 50 μ T, magnetic field intensity causes the variation rate coefficient C of variation_MUFor 10；

Wherein, E_UThe external electronic field of voltage transformer is obtained for on-line monitoring, electricity Field intensity is limited to 10kV/m, E_UnFor nominal electric field, C_ECause the variation rate coefficient of variation for electric field strength；Electric power mutual inductance It being provided in device JJG1021-2007 standard verifications, the effect of external electric field influences capacitance type potential transformer error more to protrude, It is no more than the 1/4 of elementary error limit value, nominal electric field E_UnFor 5kV/m, electric field strength causes the change rate system of variation Number C_EFor 1；

Wherein, F_UThe frequency of voltage transformer, F are obtained for on-line monitoring_UnTo be specified Frequency, C_F1And C_F1Cause the variation rate coefficient of variation for frequency；According to electric power mutual-inductor JJG1021-2007 standard verifications, frequency Voltage transformer error variation is no more than elementary error limit value 1/6 caused by rate independent role, in test condition frequency range for- 49.5~50.5Hz is the variation in -49.5~50.5Hz close to 0 in assigned frequency scope, when frequency far beyond the upper limit, under In limited time, change caused by close to basic restrictions 1/6, rated frequency F_UnFor 50Hz, frequency causes the variation rate coefficient of variation C_F1=0.02, C_F2=4.

The voltage transformer operating condition value R calculated using the above method_UAccurately, comprehensively, reliability it is high, can be accurate The operating condition dynamic security stability of voltage transformer is grasped, and then ensures that voltage transformer is safe and stable, accurate operation, Voltage transformer accident treatment information can be tracked and analyzed into Mobile state, so as to voltage transformer catastrophe failure into action State controls.

In the above-described embodiment, the weights ω_US、ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UFClassical layer may be employed 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 ω_US、ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UF, this method include following step Suddenly：

G1, order relation is determined：In { E_SU、E_ΔU、E_TU、E_HU、E_MU、E_EU、E_FUIn select a type of proportion maximum and be denoted as H₁ ^*；Then the type that proportion maximum is selected in remaining six types is denoted as H₂ ^*；It is selected in remaining five types One type of proportion maximum is denoted as H₃ ^*, the type that proportion maximum is selected in remaining four types is denoted as H₄ ^*, remaining Under three types in select a type of proportion maximum and be denoted as H₅ ^*, the one of proportion maximum is selected in remaining two types A type is denoted as H₆ ^*, last remaining type is denoted as H₇ ^*, order relation H₁ ^*＞ H₂ ^*＞ H₃ ^*＞ H₄ ^*＞ H₅ ^*＞ H₆ ^*＞ H₇ ^*, Middle H₁ ^*＞ H₂ ^*Represent type H₁ ^*Proportion be greater than or not less than H₂ ^*, thus determine E_SU、E_ΔU、E_TU、E_HU、E_MU、E_EU、E_FU's Order relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type H_k-1 ^*With H_k ^*Between the ratio between proportion size H_k-1 ^*/ H_k ^*=η_k, k=7,6,5,4,3,2, according to H_k-1 ^*With H_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kWhat is judged takes Value rule is as described below：

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=7

H can be calculated₁ ^*、H₂ ^*、H₃ ^*、H₄ ^*、H₅ ^*、H₆ ^*、H₇ ^*Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆, ω₇], ω₁,ω₂,ω₃,ω₄,ω₅,ω₆,ω₇Corresponding H₁ ^*、H₂ ^*、H₃ ^*、H₄ ^*、H₅ ^*、H₆ ^*、H₇ ^*Weights, closed according to definite sequence System, which can correspond to, draws ω_US、ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UFValue.

The weights drawn using the above method are more tallied with the actual situation the secondary load value of middle voltage transformer, voltage deviation Percentage value, environment temperature, envionmental humidity, Primary Conductor magnetic field, external electric field, the proportion shared by frequency can cause last Show that the operating condition state value of voltage transformer is more consistent with actual operating condition state, matching degree and accuracy compared with It is high.

The electric energy meter operating condition value R_MIt is calculated using equation below：

And ω_MI+ω_MU+ω_Mcos+ω_MTHDU+ω_MdU+ω_MT+ω_MH=1；

Wherein, I_MFor 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, I_MmaxFor the one of electric energy meter Primary current percent maximum value, maximum 120%；

Wherein Δ U_M For the voltage deviation percentage value of electric energy meter, Δ U_MlimFor the voltage deviation limit value of electric energy meter, voltage deviation limit value is ± 5%； ΔU_M=U_M- 1, U_MFor 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 limiting value of a power-factor of load of electric energy meter, lower limiting value 0.5；

Its In, THD_UFor the voltage-form distortion rate of electric energy meter, THD_UlimFor the upper limit value of the voltage-form distortion rate of electric energy meter, the upper limit It is worth for 5%；

Wherein, d_UFor the three-phase of electric energy meter Voltage unbalance factor, d_UlimFor the upper limit value of electric energy meter, upper limit value 4%；

Wherein, T_MFor the ambient temperature value residing for electric energy meter, T_MnFor electric energy meter Nominal environment temperature value, C_TM1And C_TM2Cause the variation 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 T_MnIt is deteriorated caused by lower close to 0, and when temperature is far beyond the upper limit, lower limit model It is caused to change close to elementary error limit value 1/4, nominal environment temperature T when enclosing_MnFor 25 DEG C, C_TM1And C_TM2Draw for temperature The variation rate coefficient being deteriorated is acted, takes C respectively_TM1=2, C_TM2=3；

Wherein, H_MFor the environmental wet angle value residing for electric energy meter, H_MnFor electric energy meter requirement Nominal environment humidity, C_HMCause the change rate of variation for humidity, according in electric power mutual-inductor JJG1021-2007 standard verifications Envionmental humidity is provided no more than 95%, electric energy meter error variation caused by ambient humidity independent role is no more than elementary error Limit value 1/8, when ambient humidity is less than specified humidity H_MnWhen be deteriorated accordingly close to 0, nominal environment humidity H_MnIt is wet for 65% Degree causes the change rate C of variation_HMFor 5%.

The electric energy meter operating condition value R calculated using the above method_MAccurately, 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, it 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 weights ω_MI、ω_MU、ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MHMay be employed through Allusion quotation analytic hierarchy process (AHP) show that still, this method is not easy to construct the differentiation battle array for meeting coherence request, and therefore, the present invention carries A kind of simple effective method has been supplied to determine weights ω_MI、ω_MU、ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MH, this method includes Following steps：

G1, order relation is determined：In select proportion A maximum type is denoted as G₁ ^*；Then the type that proportion maximum is selected in remaining six types is denoted as G₂ ^*；Remaining Under five types in select a type of proportion maximum and be denoted as G₃ ^*, the one of proportion maximum is selected in remaining four types A type is denoted as G₄ ^*, the type that proportion maximum is selected in remaining three types is denoted as G₅ ^*, in remaining two types In select a type of proportion maximum and be denoted as G₆ ^*, last remaining type is denoted as G₇ ^*, order relation G₁ ^*＞ G₂ ^*＞ G₃ ^*＞ G₄ ^*＞ G₅ ^*＞ G₆ ^*＞ G₇ ^*, wherein G₁ ^*＞ G₂ ^*Represent type G₁ ^*Proportion be greater than or not less than G₂ ^*, thus determine E_IM、E_UM、E_THDU、E_dU、E_TM、E_HMOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type G_k-1 ^*With G_k ^*Between the ratio between proportion size G_k-1 ^*/ G_k ^*=η_k, k=7,6,5,4,3,2, according to G_k-1 ^*With G_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kWhat is judged takes Value rule is as described below：

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue 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 ω_MI、ω_MU、ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MHValue.

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 value for finally drawing electric energy meter and actual operating condition state more phase Symbol, matching degree and accuracy are higher.

Claims (8)

1. the operating condition method of inspection of a kind of metering device, it is characterised in that comprise the following steps：

A, the basic information data and field operational data of metering device are collected；

B, classify to data, split data into following six class：Current transformer basic information data, current transformer monitoring Data, voltage transformer basic information data, voltage transformer monitoring data, electric energy meter basic information data, electric energy meter monitoring Data；

C, according to current transformer basic information data, current transformer monitoring data calculating current mutual inductor operating condition value R_I；

D, voltage transformer operating condition value R is calculated according to voltage transformer basic information data, voltage transformer monitoring data_U；

E, electric energy meter basic information data, electric energy meter monitoring data calculate electric energy meter operating condition value R_M；

F, the operating condition value R of metering device is calculated, it is corresponding with operating status by default metering device operating condition value Relation determines the actual motion state corresponding to the actual operating mode value of metering device, the R=ω_IR_I+ω_UR_U+ω_MR_M, Wherein, R_IFor current transformer operating condition value, ω_IFor the weights of current transformer operating condition, R_UIt is run for voltage transformer Operating mode value, ω_UFor the weights of voltage transformer operating condition, R_MFor electric energy meter operating condition value, ω_MFor electric energy meter operating condition Weights, and ω_I+ω_U+ω_M=1.

2. the operating condition method of inspection of metering device as described in claim 1, it is characterised in that：The weights ω_I、ω_U、 ω_MIt determines with the following method, this method comprises the following steps：

G1, order relation is determined：In { R_I、R_U、R_MIn select a type of proportion maximum and be denoted as R₁ ^*；Then at remaining three The type that proportion maximum is selected in type is denoted as R₂ ^*；Last remaining type is denoted as R after selecting twice₃ ^*, sequence pass It is to beWhereinRepresent type R₁ ^*Proportion be greater than or not less than R₂ ^*, thus determine R_I、R_U、 R_MOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type R_k-1 ^*With R_k ^*Between the ratio between proportion size R_k-1 ^*/R_k ^*= η_k, k=3,2, according to R_k-1 ^*With R_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kThe following institute of value rule of judgement It states：As type R_k-1 ^*With type R_k ^*During with same proportion, η_kValue range for 1.0, as type R_k-1 ^*Proportion it is slightly high In type R_k ^*Proportion when, η_kValue range for 1.2, as type R_k-1 ^*Proportion apparently higher than type R_k ^*Proportion when, η_k Value range for 1.4, as type R_k-1 ^*Proportion strongly be higher than type R_k ^*Proportion when, η_kValue range for 1.6, work as class Type R_k-1 ^*Proportion extremely be higher than type R_k ^*Proportion when, η_kValue range be 1.8, η_kThe intermediate values of two adjacent judgements be 1.1、1.3、1.5、1.7；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=3

R can be calculated₁ ^*、R₂ ^*、R₃ ^*Weight vector ω=[ω₁,ω₂,ω₃], ω₁、ω₂、ω₃Corresponding R₁ ^*、R₂ ^*、R₃ ^*Power Value, can correspond to according to definite order relation and draw ω_I、ω_U、ω_MValue.

3. the operating condition method of inspection of metering device as described in claim 1, it is characterised in that：The current transformer fortune Row operating mode value R_IIt is calculated using equation below：

The R_I=ω_ISE_SI+ω_IIE_II+ω_ITE_TI+ω_IHE_HI+ω_IRE_RI+ω_IME_MI, and ω_IS+ω_II+ω_IT+ω_IH+ω_IR+ ω_IM=1；

Wherein, S_IThe secondary negative of current transformer is obtained for on-line monitoring Charge values, S_InFor the rated load of current transformer, S_I0For the secondary load lower limiting value of current transformer；

Wherein, I_IFor the primary current percentage value of current transformer, the once electricity of current transformer Stream percentage value refers to the ratio for monitoring the rated current of obtained current transformer primary current and current transformer on-line, I_Imax For the primary current percent maximum value of current transformer；

Wherein, T_IFor the ambient temperature value residing for current transformer, T_InFor current transformer Nominal environment temperature value, C_TI1And C_TI2Cause the variation rate coefficient of variation for temperature；

Wherein, H_IFor the environmental wet angle value residing for current transformer, H_InFor current transformer Nominal environment humidity, C_HICause the change rate of variation for humidity；

Wherein, t_RIThere is the time of defluidization, τ for closest primary current mutual inductor_RWhen decaying for remanent magnetism Between constant；

Wherein, M_ITo close on Primary Conductor magnetic field intensity, M_InFor specified magnetic field intensity, C_MIFor magnetic field Intensity causes the variation rate coefficient of variation.

4. the operating condition method of inspection of metering device as claimed in claim 3, it is characterised in that：The weights ω_IS、ω_II、 ω_IT、ω_IH、ω_IR、ω_IMIt determines with the following method, this method comprises the following steps：

G1, order relation is determined：In { E_SI、E_II、E_TI、E_HI、E_RI、E_MIIn select a type of proportion maximum and be denoted as E₁ ^*；Then The type that proportion maximum is selected in remaining five types is denoted as E₂ ^*；Proportion maximum is selected in remaining four types A type be denoted as E₃ ^*, the type that proportion maximum is selected in remaining three types is denoted as E₄ ^*, at remaining two The type that proportion maximum is selected in type is denoted as E₅ ^*, last remaining type is denoted as E₆ ^*, order relation isWhereinRepresent type E₁ ^*Proportion be greater than or not less than E₂ ^*, thus come Determine E_SI、E_II、E_TI、E_HI、E_RI、E_MIOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type E_k-1 ^*With E_k ^*Between the ratio between proportion size E_k-1 ^*/E_k ^*= η_k, k=6,5,4,3,2, according to E_k-1 ^*With E_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kThe value rule of judgement As described below：As type E_k-1 ^*With type E_k ^*During with same proportion, η_kValue range for 1.0, as type E_k-1 ^*Proportion Slightly higher than type E_k ^*Proportion when, η_kValue range for 1.2, as type E_k-1 ^*Proportion apparently higher than type E_k ^*Proportion When, η_kValue range for 1.4, as type E_k-1 ^*Proportion strongly be higher than type E_k ^*Proportion when, η_kValue range for 1.6, As type E_k-1 ^*Proportion extremely be higher than type E_k ^*Proportion when, η_kValue range be 1.8, η_kTwo adjacent judgements intermediate value For 1.1,1.3,1.5,1.7；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=6

E can be calculated₁ ^*、E₂ ^*、E₃ ^*、E₄ ^*、E₅ ^*、E₆ ^*Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆], ω₁, ω₂,ω₃,ω₄,ω₅,ω₆Corresponding E₁ ^*、E₂ ^*、E₃ ^*、E₄ ^*、E₅ ^*、E₆ ^*Weights, can be corresponded to and drawn according to definite order relation ω_IS、ω_II、ω_IT、ω_IH、ω_IR、ω_IMValue.

5. the operating condition method of inspection of metering device as described in claim 1, it is characterised in that：The voltage transformer fortune Row operating mode value R_UIt is calculated using equation below：

The R_U=ω_USE_SU+ω_UΔE_ΔU+ω_UTE_TU+ω_UHE_HU+ω_UME_MU+ω_UEE_EU+ω_UFE_FU,

And ω_US+ω_UΔ+ω_UT+ω_UH+ω_UM+ω_UE+ω_UF=1；

Wherein, S_UThe secondary of voltage transformer is obtained for on-line monitoring Load, S_UnFor the rated load of current transformer, S_U0For the secondary load lower limiting value of voltage transformer；

Wherein, Δ U_UFor The voltage deviation percentage value for the voltage transformer that line monitors, Δ U_UlimFor the voltage deviation limit value of voltage transformer；

Wherein, T_UFor the ambient temperature value residing for voltage transformer, T_UnFor mutual induction of voltage The nominal environment temperature value of device requirement, C_TU1And C_TU2Cause the variation rate coefficient of variation for temperature；

Wherein, H_UFor the environmental wet angle value residing for voltage transformer, H_UnIt will for voltage transformer The nominal environment humidity asked, C_HUCause the change rate of variation for humidity；

Wherein, M_UTo close on Primary Conductor magnetic field intensity, M_UnFor specified magnetic field intensity, C_MUFor magnetic Field intensity causes the variation rate coefficient of variation；

Wherein, E_UThe external electronic field of voltage transformer, E are obtained for on-line monitoring_UnTo be specified Electric field strength, C_ECause the variation rate coefficient of variation for electric field strength；

Wherein, F_UThe frequency of voltage transformer, F are obtained for on-line monitoring_UnFor rated frequency, C_F1And C_F1Cause the variation rate coefficient of variation for frequency.

6. the operating condition method of inspection of metering device as claimed in claim 5, it is characterised in that：The weights ω_US、 ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UFIt determines with the following method, this method comprises the following steps：

G1, order relation is determined：In { E_SU、E_ΔU、E_TU、E_HU、E_MU、E_EU、E_FUIn select a type of proportion maximum and be denoted as H₁ ^*； Then the type that proportion maximum is selected in remaining six types is denoted as H₂ ^*；Proportion is selected in remaining five types A maximum type is denoted as H₃ ^*, the type that proportion maximum is selected in remaining four types is denoted as H₄ ^*, remaining The type that proportion maximum is selected in three types is denoted as H₅ ^*, a class of proportion maximum is selected in remaining two types Type is denoted as H₆ ^*, last remaining type is denoted as H₇ ^*, order relation isWhereinRepresent type H₁ ^*Proportion be greater than or not less than H₂ ^*, thus determine E_SU、E_ΔU、E_TU、E_HU、E_MU、E_EU、E_FU's Order relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type H_k-1 ^*With H_k ^*Between the ratio between proportion size H_k-1 ^*/H_k ^*= η_k, k=7,6,5,4,3,2, according to H_k-1 ^*With H_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kThe value rule of judgement It is then as described below：As type H_k-1 ^*With type H_k ^*During with same proportion, η_kValue range for 1.0, as type H_k-1 ^*Ratio It is slightly higher than type H again_k ^*Proportion when, η_kValue range for 1.2, as type H_k-1 ^*Proportion apparently higher than type H_k ^*Ratio During weight, η_kValue range for 1.4, as type H_k-1 ^*Proportion strongly be higher than type H_k ^*Proportion when, η_kValue range be 1.6, as type H_k-1 ^*Proportion extremely be higher than type H_k ^*Proportion when, η_kValue range be 1.8, η_kTwo adjacent judgements Intermediate value is 1.1,1.3,1.5,1.7；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue brings equation below into：

Wherein, m=7

H can be calculated₁ ^*、H₂ ^*、H₃ ^*、H₄ ^*、H₅ ^*、H₆ ^*、H₇ ^*Weight vector ω=[ω₁,ω₂,ω₃,ω₄,ω₅,ω₆, ω₇], ω₁,ω₂,ω₃,ω₄,ω₅,ω₆,ω₇Corresponding H₁ ^*、H₂ ^*、H₃ ^*、H₄ ^*、H₅ ^*、H₆ ^*、H₇ ^*Weights, closed according to definite sequence System, which can correspond to, draws ω_US、ω_UΔ、ω_UT、ω_UH、ω_UM、ω_UE、ω_UFValue.

7. the operating condition method of inspection of metering device as described in claim 1, it is characterised in that：The electric energy meter runs work Condition value R_MIt is calculated using equation below：

And ω_MI+ω_MU+ω_Mcos+ω_MTHDU+ω_MdU+ω_MT+ω_MH=1；

Wherein, I_MFor 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, I_MmaxFor the once electric of electric energy meter Flow percent maximum value；

Wherein Δ U_MFor electricity The voltage deviation percentage value of energy table, Δ U_MlimFor the voltage deviation limit value of electric energy meter；ΔU_M=U_M- 1, U_MFor 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 limiting value of a power-factor of load of electric energy meter；

Wherein, THD_UFor the voltage-form distortion rate of electric energy meter, THD_UlimFor the upper limit value of the voltage-form distortion rate of electric energy meter；

Wherein, d_UFor the three-phase voltage of electric energy meter Degree of unbalancedness, d_UlimFor the upper limit value of electric energy meter；

Wherein, T_MFor the ambient temperature value residing for electric energy meter, T_MnFor the specified of electric energy meter Ambient temperature value, C_TM1And C_TM2Cause the variation rate coefficient of variation for temperature；

Wherein, H_MFor the environmental wet angle value residing for electric energy meter, H_MnFor the volume of electric energy meter requirement Determine ambient humidity, C_HMCause the change rate of variation for humidity.

8. the operating condition method of inspection of metering device as claimed in claim 7, it is characterised in that：The weights ω_MI、ω_MU、 ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MHIt determines with the following method, this method comprises the following steps：

G1, order relation is determined：In select proportion maximum A type be denoted as G₁ ^*；Then the type that proportion maximum is selected in remaining six types is denoted as G₂ ^*；Remaining The type that proportion maximum is selected in five types is denoted as G₃ ^*, a class of proportion maximum is selected in remaining four types Type is denoted as G₄ ^*, the type that proportion maximum is selected in remaining three types is denoted as G₅ ^*, selected in remaining two types A type for going out proportion maximum is denoted as G₆ ^*, last remaining type is denoted as G₇ ^*, order relation isWhereinRepresent type G₁ ^*Proportion be greater than or not less than G₂ ^*, Thus E is determined_IM、E_UM、E_THDU、E_dU、E_TM、E_HMOrder relation；

The ratio in judgement of g2, adjacent type proportion size：Adjacent type G_k-1 ^*With G_k ^*Between the ratio between proportion size G_k-1 ^*/G_k ^*= η_k, k=7,6,5,4,3,2, according to G_k-1 ^*With G_k ^*Proportion size, η_kValue range be 1.0-1.8；η_kThe value rule of judgement It is then as described below：As type G_k-1 ^*With type G_k ^*During with same proportion, η_kValue range for 1.0, as type G_k-1 ^*Ratio It is slightly higher than type G again_k ^*Proportion when, η_kValue range for 1.2, as type G_k-1 ^*Proportion apparently higher than type G_k ^*Ratio During weight, η_kValue range for 1.4, as type G_k-1 ^*Proportion strongly be higher than type G_k ^*Proportion when, η_kValue range be 1.6, as type G_k-1 ^*Proportion extremely be higher than type G_k ^*Proportion when, η_kValue range be 1.8, η_kTwo adjacent judgements Intermediate value is 1.1,1.3,1.5,1.7；

G3, proportionality coefficient calculate：G2 steps are drawn into η_kValue 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 ω_MI、ω_MU、ω_Mcos、ω_MTHDU、ω_MdU、ω_MT、ω_MHValue.