CN105974354B - A kind of capacitance type potential transformer simulation model and emulation mode - Google Patents
A kind of capacitance type potential transformer simulation model and emulation mode Download PDFInfo
- Publication number
- CN105974354B CN105974354B CN201610559224.5A CN201610559224A CN105974354B CN 105974354 B CN105974354 B CN 105974354B CN 201610559224 A CN201610559224 A CN 201610559224A CN 105974354 B CN105974354 B CN 105974354B
- Authority
- CN
- China
- Prior art keywords
- voltage
- capacitance
- type potential
- capacitance type
- external
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of capacitance type potential transformer simulation model and emulation modes, establish the capacitance type potential transformer simulation model for considering more external influence factors, multiple extraneous factors for influencing capacitance type potential transformer are analyzed, obtain affecting laws of the external influence factor to capacitance type potential transformer accuracy of measurement, capacitance type potential transformer error for scene operation is big, the reason of failure of insulation, provides theoretical foundation, it solves and currently only capacitance type potential transformer transient performance is emulated, lack the problem of being emulated on the steady-state behaviour of multiple extraneous factors influence capacitance type potential transformer accuracy of measurement.
Description
Technical field
The present invention relates to power equipment performance monitoring technique fields, and in particular to a kind of capacitance type potential transformer emulation mould
Type and emulation mode.
Background technology
With the continuous development of electric system, the advantages that capacitance type potential transformer is high, at low cost due to its dielectric strength,
It is widely used in being used as voltage monitoring equipment in high-voltage fence, measurement result is secondary measurement, relay protection, monitoring device
Important evidence.But due to the particular principles of capacitance type potential transformer and the complexity of its application environment, lead to condenser type
There is the problems such as big error, failure of insulation in use in voltage transformer.Lead to capacitance type potential transformer to explore
The influence of the factor and correlative factor of error to its accuracy of measurement is generated, generally use establishes capacitance type potential transformer at present
The method of simulation model emulates its performance, and standard is measured to capacitance type potential transformer to obtain external influence factor
The affecting laws of exactness.
Currently, the simulation model for capacitance type potential transformer mainly retouches the mathematics of iron core dynamic magnetization process
It states.But iron core is non-linear caused by wideband, remanent magnetism etc., and description iron core dynamic magnetization characteristic is made to become difficult.According to magnetization
The difference of characteristic curve description, there are mainly three types of the simulation models of capacitance type potential transformer：It is non-only to consider that core sataration causes
It linear static models, the dynamic model based on transient state magnetization characteristic and is simulated respectively with several circuit elements and causes mutual inductance
The nonlinear time-domain equivalent-circuit model of device non-linear factor.For a long time, multinomial research is dedicated to capacitance type potential transformer
The research of transient performance emulation, but focus primarily upon temporary to capacitance type potential transformer using EMTP (EM transient calculation program)
State carries out numerical computations.Although EMTP has good computational accuracy, its is computationally intensive, not when examining protective relaying device
Conducive to the real time execution of real-time emulation system.In addition, transient state of the current most researchs mainly for capacitance type potential transformer
Performance simulation, capacitor voltage about multiple influence factors less on multiple static Simulations for influencing accuracy of measuring factor
The foundation of accuracy of instrument transformers simulation model and emulation mode still need to further explore.
Invention content
The technical problem to be solved by the present invention is to establish the capacitance type potential transformer for considering more external influence factors
Simulation model analyzes multiple extraneous factors for influencing capacitance type potential transformer, obtains external influence factor to capacitance
The affecting laws of formula voltage measuring transformer accuracy, for scene operation capacitance type potential transformer error is big, failure of insulation
The reason of provide theoretical foundation, and it is an object of the present invention to provide a kind of capacitance type potential transformer simulation model and emulation mode, solve to work as
Preceding only to be emulated to capacitance type potential transformer transient performance, lack influences capacitance type potential transformer to multiple extraneous factors
The problem of steady-state behaviour of accuracy of measurement is emulated.
The present invention is achieved through the following technical solutions：
A kind of capacitance type potential transformer simulation model, including external environment characterization circuit and the equivalent electricity of voltage transformer
Road, the external environment characterization circuit external voltage input terminal, while being electrically connected with voltage transformer equivalent circuit, for simulating
The variation of external influence factor and then the output voltage for influencing voltage transformer equivalent circuit；The voltage transformer equivalent circuit
External voltage output end, while being electrically connected with external environment characterization circuit, it is used for equivalent voltage transformer circuit.
Particularly, the external environment characterization circuit specifically includes：First resistor, second resistance, 3rd resistor, the 4th electricity
Resistance, third capacitance, the 4th capacitance, wherein concatenated first resistor and second resistance, concatenated 3rd resistor and the 4th resistance are equal
It is set between the first external voltage input terminal and ground, third capacitance is set to the second external voltage input terminal and voltage transformer
Between equivalent circuit, the 4th capacitance is set between voltage transformer equivalent circuit and ground.
Particularly, the voltage transformer equivalent circuit specifically includes：First capacitance, the second capacitance, the 4th capacitance, the 5th
Capacitance, the first inductance, the second inductance, third inductance, the 4th inductance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance,
9th resistance, wherein concatenated first capacitance and the second capacitance are set between the first external voltage input terminal and ground, the first electricity
Appearance connect third capacitance with the common end of the second capacitance, and third is set to after the first inductance, the 5th resistance and the series connection of the 4th capacitance
Between resistance and the common end and ground of the 4th resistance, the both sides of the 4th capacitance are set to after the 6th resistance and the second inductance in parallel,
It is in parallel with the 5th capacitance after third inductance and the series connection of the 8th resistance, then the both sides of the 4th capacitance are set to after the 7th resistance of connecting,
9th resistance is set to the both sides of the 4th capacitance after connecting with the 4th inductance.
Particularly, the first resistor, second resistance, 3rd resistor, the 4th resistance, the 9th resistance, the first capacitance, second
Capacitance, third capacitance and the 4th inductance size are adjustable.
A kind of capacitance type potential transformer emulation mode, including above-mentioned voltage transformer simulation model is established, pass through experiment
The correspondence of external influence factor and voltage transformer electronic component parameter is obtained, and then changes voltage transformer electronic component
Parameter, the variation of equivalent characterization external influence factor, emulates the variation of voltage transformer output voltage, to obtain ectocine
Affecting laws of the factor to voltage transformer.
Particularly, the external influence factor includes：Environment temperature, ambient humidity, filth, external electrical field and secondary load
Compared with prior art, the present invention having the following advantages and advantages：
A kind of capacitance type potential transformer simulation model of the present invention and emulation mode can establish the more extraneous shadows of consideration
The capacitance type potential transformer simulation model of the factor of sound divides multiple extraneous factors for influencing capacitance type potential transformer
Analysis obtains affecting laws of the external influence factor to capacitance type potential transformer accuracy of measurement, for the condenser type of scene operation
The reason of voltage transformer error is big, failure of insulation provides theoretical foundation, solves current only temporary to capacitance type potential transformer
State property can be emulated, and the steady-state behaviour progress that multiple extraneous factors are influenced with capacitance type potential transformer accuracy of measurement is lacked
The problem of emulation.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the capacitance type potential transformer equivalent circuit diagram that the embodiment of the present invention 1 provides.
Fig. 2 is the capacitance type potential transformer simulation model that the embodiment of the present invention 1 provides.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in FIG. 1, FIG. 1 is the capacitance type potential transformer equivalent circuit diagrams that the embodiment of the present invention 1 provides.
In the present embodiment, the computation model of capacitance type potential transformer circuit in order to obtain, in conjunction with the basic knot of its circuit
Structure, primary side power supply use power frequency electric potential source, the circuit in Fig. 1 on the left of terminal 1-2 are made equivalent circuit meter with Thevenin's theorem
It calculates, and each parameter is all converted and arrives primary side, the capacitance type potential transformer equivalent circuit of gained is as shown in Figure 1.
Wherein, Lk、RkFor capacitance type potential transformer compensation reactor and the inductance and resistance of intermediate transformer；Lm、RmFor
The excitatory shunt inductance and resistance of capacitance type potential transformer intermediate transformer；L2、R2For capacitance type potential transformer conversion to one
The inductance and resistance of secondary side load；Cf、Rf、Lf、rfFor the capacitance of capacitance type potential transformer damper, resistance, inductance, small electricity
Resistance；imL is flowed through for capacitance type potential transformerm、RmThe sum of electric current；i1、if、i2R is flowed through for capacitance type potential transformerK、Rf、
R2Electric current；u2Secondary side output voltage after being converted for capacitance type potential transformer.
Primary side input voltage u after conversion1And equivalent capacity CeAs shown in formula (2-1), wherein C1For capacitor voltage
Mutual inductor high-voltage capacitance, C2For capacitance type potential transformer low-voltage capacitance, CeFor capacitance type potential transformer high-voltage capacitance and low pressure
The parallel value of capacitance.
List the following state equation of circuit：
W in above-mentioned formula (2-2) is primary side the number of turns of capacitance type potential transformer intermediate transformer；For centre
The excitation property of transformer.In Stable State of Sine, above-mentioned equation group can be replaced by 1 group of vector equation, i.e., u1, u2 at than
Example correspondence.But when capacitance type potential transformer primary side input voltage u1 mutates, secondary side output voltage
U2 and u1 correspondences then need to obtain by solving above-mentioned Constrained equations.
On the basis of establishing conventional condenser voltage transformer mathematical model, each special operating environment pair is considered emphatically
In the influence of measurement error of transformer, combining environmental temperature, ambient humidity and filth, external electrical field, secondary load etc. it is multiple because
Element completes building for the capacitance type potential transformer simulation model for considering more influence factors.As shown in Fig. 2, Fig. 2 is that the present invention is real
The capacitance type potential transformer simulation model of the offer of example 1 is provided.
The capacitance type potential transformer simulation model specifically includes external environment characterization circuit and voltage transformer is equivalent
Circuit.
The external environment characterization circuit external voltage input terminal, while being electrically connected with voltage transformer equivalent circuit, it uses
In the variation of simulation external influence factor and then the output voltage of influence voltage transformer equivalent circuit.It specifically includes：First electricity
Hinder R21, second resistance R22,3rd resistor R23, the 4th resistance R24, third capacitance C23, the 4th capacitance C24, wherein concatenated
First resistor R21 and second resistance R22, that concatenated 3rd resistor R23 and the 4th resistance R24 may be contained within the first external voltage is defeated
Entering between end and ground, third capacitance C23 is set between the second external voltage input terminal and voltage transformer equivalent circuit, and the 4th
Capacitance C24 is set between voltage transformer equivalent circuit and ground.
The voltage transformer equivalent circuit external voltage output end, while being electrically connected with external environment characterization circuit, it uses
In equivalent voltage transformer circuit.It specifically includes：First capacitance C21, the second capacitance C22, the 4th capacitance C24, the 5th capacitance
C25, the first inductance L21, the second inductance L22, third inductance L23, the 4th inductance L24, the 5th resistance R25, the 6th resistance R26,
7th resistance R27, the 8th resistance R28, the 9th resistance R29, wherein concatenated first capacitance C21 is set to the second capacitance C22
Between first external voltage input terminal and ground, the first capacitance C21 connect third capacitance C23 with the common end of the second capacitance C22, the
It is set to the public of 3rd resistor R23 and the 4th resistance R24 after one inductance L21, the 5th resistance R25 and the 4th capacitance C24 series connection
Between end and ground, the both sides of the 4th capacitance C24, third inductance L23 are set to after the 6th resistance R26 is in parallel with the second inductance L22
It is in parallel with the 5th capacitance C25 after connecting with the 8th resistance R28, then it is set to the two of the 4th capacitance C24 after the 7th resistance R27 that connects
Side, the 9th resistance R29 are set to the both sides of the 4th capacitance C24 after connecting with the 4th inductance L24.
Wherein, C21, C22 are voltage-dividing capacitor equivalent capacity, and capacitance is as capacitance type potential transformer capacitive divider
Main part, mainly by temperature, making moist is influenced with self deterioration, the capacitance of derided capacitors under the influence of these factors
It can change with dielectric properties, influence accuracy of measurement.
The stray capacitance that C23 is formed between the charging member and voltage-dividing capacitor of substation, stray capacitance is mainly by ring
The influence of border electric field.
R21, R22 are capacitive divider equivalent resistance, and the active loss inside voltage-dividing capacitor can use lumped parameter
R21, R22 are indicated.R21, R22 mainly by temperature, making moist is influenced with self deterioration.
R23, R24 characterize the resistance of leakage current of the capacitive divider caused by surface wetting and filth, Sichuan-Tibet is high and cold,
The climatic environment of high humidity is acted on plus filthy, and voltage-dividing capacitor surface will be made to form larger leakage current, influence capacitive battery
Press mutual inductor normal operation and accurate measurement.Surface resistance R 23, R24 are mainly by temperature, the shadow of filth and insulator surface wetting
It rings.
R29, L24 characterization capacitance type potential transformer load are converted to the parameter of primary side.Characterize its equivalent load ginseng
Several influences to accuracy of capacitor voltage transformer.
It, can be to the capacitance under lower state by the capacitance type potential transformer simulation model of the more influence factors of above-mentioned consideration
Rule between the accuracy of formula voltage transformer and each influence factor carries out simulation calculation, and specific method is：It is obtained by testing
The correspondence of external influence factor and voltage transformer electronic component parameter, and then change voltage transformer electronic component ginseng
Number, it is equivalent characterization external influence factor variation, emulate voltage transformer output voltage variation, to obtain ectocine because
Affecting laws of the element to voltage transformer.
When studying influence of the temperature to accuracy of capacitor voltage transformer, since temperature is mainly mutual to capacitor voltage
Equivalent capacity is affected with resistance parameter in sensor interior insulation capacitive divider, and temperature and the first capacitance are obtained by experiment
The correspondence of C21, the second capacitance C22, first resistor R21 and second resistance R22, and then change the first capacitance C21, the second electricity
Hold the size of C22, first resistor R21 and second resistance R22, it is defeated to emulate voltage transformer for the variation of equivalent characterization ambient temperature
The variation for going out voltage, to obtain voltage transformer accuracy variation tendency and rule under condition of different temperatures.
When research environment humidity is with filthy influence to accuracy of capacitor voltage transformer, due to ambient humidity with it is dirty
It is dirty to be mainly affected to the capacitive divider external insulation equivalent resistance of capacitance type potential transformer, environmental wet is obtained by experiment
Degree with it is filthy under the conditions of External leakage current value measurement, extrapolate ambient humidity and filthy condition and 3rd resistor R23 and the
The correspondence of four resistance R24, and then change 3rd resistor R23 and the 4th resistance R24 sizes, equivalent characterization ambient humidity and dirt
Dirty variation emulates the variation of voltage transformer output voltage, mutual to obtain varying environment humidity and voltage under the conditions of filth
Sensor accuracy variation tendency and rule.
When studying influence of the external electrical field to accuracy of capacitor voltage transformer, since external electrical field is mainly to capacitance
The capacitive divider of formula voltage transformer and high pressure stray capacitance and stray capacitance influences are larger over the ground, are obtained not by testing
With external conductor under the conditions of current potential and different location to the correspondence of capacitance type potential transformer, external electrical field and the is extrapolated
The correspondence of three capacitance C23, and then change the size of third capacitance C23, the variation of equivalent characterization external electrical field emulates voltage
The variation of transformer output voltage, to obtain voltage transformer accuracy variation tendency and rule under the conditions of different ring external electrical fields
Rule.
When studying influence of the secondary load to accuracy of capacitor voltage transformer, since secondary load is to capacitive battery
It presses the input impedance of the intermediate transformer of mutual inductor to be affected, and then influences the capacitive divider point of capacitance type potential transformer
Pressure changes the 9th resistance R29 and the 4th inductance L24 by changing different capabilities and the secondary load under different capacity factor
Size, the variation of equivalent characterization secondary load emulates the variation of voltage transformer output voltage, negative to obtain different secondary
Voltage transformer accuracy variation tendency and rule under the conditions of lotus.
It should be noted that those skilled in the art will know that and how may be implemented by testing the above-mentioned ectocine of acquisition
The correspondence of factor and voltage transformer electronic component parameter.
Technical scheme of the present invention is established by capacitance type mutual inductor simulation model and policy method and considers more ectocines
The capacitance type potential transformer simulation model of factor analyzes multiple extraneous factors for influencing capacitance type potential transformer,
Affecting laws of the external influence factor to capacitance type potential transformer accuracy of measurement are obtained, for the capacitor voltage of scene operation
The reason of transformer error is big, failure of insulation provides theoretical foundation, solves current only to capacitance type potential transformer transitory
It can be emulated, lack and the steady-state behaviour of multiple extraneous factors influence capacitance type potential transformer accuracy of measurement is emulated
The problem of.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (2)
1. a kind of capacitance type potential transformer emulation mode, which is characterized in that establish voltage transformer simulation model, pass through experiment
The correspondence of external influence factor and voltage transformer electronic component parameter is obtained, and then changes voltage transformer electronic component
Parameter, the variation of equivalent characterization external influence factor, emulates the variation of voltage transformer output voltage, to obtain ectocine
Affecting laws of the factor to voltage transformer；Voltage transformer simulation model, including external environment characterization circuit and mutual induction of voltage
Device equivalent circuit, the external environment characterization circuit external voltage input terminal, while being electrically connected with voltage transformer equivalent circuit,
Output voltage for simulating the variation of external influence factor and then influence voltage transformer equivalent circuit；The voltage transformer
Equivalent circuit external voltage output end, while being electrically connected with external environment characterization circuit, it is used for equivalent voltage transformer circuit；Institute
External environment characterization circuit is stated to specifically include：First resistor, second resistance, 3rd resistor, the 4th resistance, third capacitance, the 4th
Capacitance, wherein concatenated first resistor may be contained within the first external electrical with second resistance, concatenated 3rd resistor and the 4th resistance
It presses between input terminal and ground, third capacitance is set between the second external voltage input terminal and voltage transformer equivalent circuit, the
Four capacitances are set between voltage transformer equivalent circuit and ground.
2. capacitance type potential transformer emulation mode according to claim 1, which is characterized in that the external influence factor
Including：Environment temperature, ambient humidity, filth, external electrical field and secondary load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610559224.5A CN105974354B (en) | 2016-07-15 | 2016-07-15 | A kind of capacitance type potential transformer simulation model and emulation mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610559224.5A CN105974354B (en) | 2016-07-15 | 2016-07-15 | A kind of capacitance type potential transformer simulation model and emulation mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105974354A CN105974354A (en) | 2016-09-28 |
| CN105974354B true CN105974354B (en) | 2018-07-17 |
Family
ID=56952430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610559224.5A Active CN105974354B (en) | 2016-07-15 | 2016-07-15 | A kind of capacitance type potential transformer simulation model and emulation mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105974354B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008335B (en) * | 2017-11-15 | 2020-04-03 | 华电电力科学研究院有限公司 | Method for identifying parameters of capacitor voltage transformer by least square method |
| CN109901096A (en) * | 2019-04-16 | 2019-06-18 | 贵州电网有限责任公司 | A kind of capacitance type potential transformer measuring accuracy on-line monitoring system and method |
| CN110082698A (en) * | 2019-04-16 | 2019-08-02 | 贵州电网有限责任公司 | A kind of capacitance type potential transformer integrated operation status assessment analogue system |
| CN110221237A (en) * | 2019-06-27 | 2019-09-10 | 广东工业大学 | A kind of capacitance type potential transformer harmonic voltage measurement method and apparatus |
| CN112698260B (en) * | 2020-11-24 | 2022-08-16 | 国网河北省电力有限公司电力科学研究院 | CVT voltage sag measurement error correction method and system |
| CN112485509B (en) * | 2020-12-09 | 2023-10-31 | 国网四川省电力公司电力科学研究院 | Transient overvoltage measuring device and method based on nonlinear broadband model |
| CN113190949B (en) * | 2020-12-22 | 2023-03-14 | 重庆大学 | Time domain construction method of CVT (continuously variable transmission) broadband simulation model |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2208807C2 (en) * | 2000-10-18 | 2003-07-20 | Открытое акционерное общество "Свердловский завод трансформаторов тока" | Procedure to test single-phase voltage transformers and facility for its implementation |
| CN200965824Y (en) * | 2006-08-30 | 2007-10-24 | 中国电力科学研究院 | Capacitance type voltage mutual-inductor model for dynamic analog test |
| CN101277011A (en) * | 2007-03-30 | 2008-10-01 | 通用电气公司 | Self-adjusting voltage filtering technique compensating for dynamic errors of capacitive voltage transformers |
| CN103344936A (en) * | 2013-07-08 | 2013-10-09 | 广东电网公司佛山供电局 | Method for fault simulation test of capacitor voltage transformer |
| CN203396935U (en) * | 2013-07-08 | 2014-01-15 | 广东电网公司佛山供电局 | Fault simulation test device for capacitance type potential transformer |
| CN204142946U (en) * | 2014-08-12 | 2015-02-04 | 国家电网公司 | A kind of CVT dynamic model model experimental systems |
-
2016
- 2016-07-15 CN CN201610559224.5A patent/CN105974354B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2208807C2 (en) * | 2000-10-18 | 2003-07-20 | Открытое акционерное общество "Свердловский завод трансформаторов тока" | Procedure to test single-phase voltage transformers and facility for its implementation |
| CN200965824Y (en) * | 2006-08-30 | 2007-10-24 | 中国电力科学研究院 | Capacitance type voltage mutual-inductor model for dynamic analog test |
| CN101277011A (en) * | 2007-03-30 | 2008-10-01 | 通用电气公司 | Self-adjusting voltage filtering technique compensating for dynamic errors of capacitive voltage transformers |
| CN103344936A (en) * | 2013-07-08 | 2013-10-09 | 广东电网公司佛山供电局 | Method for fault simulation test of capacitor voltage transformer |
| CN203396935U (en) * | 2013-07-08 | 2014-01-15 | 广东电网公司佛山供电局 | Fault simulation test device for capacitance type potential transformer |
| CN204142946U (en) * | 2014-08-12 | 2015-02-04 | 国家电网公司 | A kind of CVT dynamic model model experimental systems |
Non-Patent Citations (2)
| Title |
|---|
| 电容式电压互感器的宽频无源电路模型;梁贵书等;<<高电压技术>>;20160131;第42卷(第1期);摘要，正文第02小节，图1-9 * |
| 电容式电压互感器的数字仿真模型;臧雯等;<<同济大学学报>>;20040331;第32卷(第2期);正文第1小节，图1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105974354A (en) | 2016-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105974354B (en) | A kind of capacitance type potential transformer simulation model and emulation mode | |
| Li et al. | Research on a composite voltage and current measurement device for HVDC networks | |
| CN102116807B (en) | Three-dimensional power frequency electric field measurement method and device capable of correcting distortion of electric field | |
| CN103063895B (en) | Pliers-shaped anti-interference current transformer and transformer iron core grounding current testing system | |
| CN108535679A (en) | Capacitance type potential transformer harmonic voltage based on interpolation method accurately measures method | |
| CN105182126B (en) | Improved distribution transformer energy efficiency metering detection method | |
| CN103487679B (en) | A kind of AIS electric mutual inductor test macro and method thereof | |
| CN111460605B (en) | Transformer broadband hybrid model considering core nonlinearity and building method thereof | |
| CN109541283B (en) | Non-contact voltage measurement system and method | |
| CN112485509B (en) | Transient overvoltage measuring device and method based on nonlinear broadband model | |
| CN105223536B (en) | A kind of portable electric meter field calibration system | |
| CN106841860A (en) | The CVT dynamic analog devices and its parameter acquiring method of a kind of use for laboratory | |
| CN102680768A (en) | Mono-polar type voltage measurement sensor with self-correction and self-construct electric filed and measurement method | |
| CN207180902U (en) | A kind of high precision temperature acquisition circuit | |
| CN102788902B (en) | High-voltage transmission line power frequency parameter actual measuring device capable of resisting against high-induced voltage interference | |
| CN105373677A (en) | Magnetically-controlled memory capacitor equivalent circuit | |
| CN104316841A (en) | Method for identifying all line parameters by means of fault recording data | |
| CN106526356A (en) | Metal oxide lightning arrester live-line detection validity test system | |
| CN104933238A (en) | Duplex-winding power transformer non-linear model and establishing method | |
| CN109406877A (en) | The measurement method and device of capacitance type potential transformer harmonic propagation coefficient | |
| CN203025253U (en) | Capacitive equipment dielectric loss energized testing device | |
| CN202975202U (en) | Heavy-current wireless three-phase zinc oxide lightning arrester electrified tester | |
| CN106546943B (en) | Method and device for measuring error and loss self-test | |
| CN108802467B (en) | Iron core coil type current transformer with high detection precision and electric leakage detection device | |
| CN108152782A (en) | A kind of test method of massive quantity power supply and measurement electric energy meter more positive coefficient |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |