CN107515322A - A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error - Google Patents
A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error Download PDFInfo
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- CN107515322A CN107515322A CN201711008597.4A CN201711008597A CN107515322A CN 107515322 A CN107515322 A CN 107515322A CN 201711008597 A CN201711008597 A CN 201711008597A CN 107515322 A CN107515322 A CN 107515322A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- 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
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Abstract
The invention discloses a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error, including storage battery power supply administrative unit, adjustment unit and output unit, booster and current lifting device.Storage battery power supply administrative unit is used to provide the two-way three phase mains for being respectively in 120 °；Adjustment unit is used to obtain three-phase mains voltage, and carries out the angular adjustment between voltage magnitude regulation and two-way three-phase signal；Output unit is used to receive adjustment unit output signal, and carries out phase, frequency and amplitude regulation and optimization；Booster is used for the three-phase voltage signal all the way of Rreceive output unit output；Current lifting device is used for the another way three-phase voltage signal of Rreceive output unit output.The present invention can be embodied as the Site Detection power supply of power distribution network transformer error, be advantageous to the popularization and application of trichotomy error-detecting experiment.
Description
Technical field
The present invention relates to electric device maintenance field, is specifically that one kind is applied to trichotomy Site Detection power distribution network transformer
The experiment power supply of error.
Background technology
Power distribution network transformer refers mainly to the transformer for 6kV~35kV voltage class, and it mainly includes following two classes
Type：First, voltage transformer summation current transformer is the transformer of monomer-type, i.e. a transformer equipment only includes an electricity
Press transformer or a current transformer, enter more voltage transformer summation current transformers according to metering method during practical application
Row combination, so as to realize the signal progress of disease of voltage and current and electric energy metrical；Second, ployphase voltages transformer or multiphase current
Transformer is combined into one according to electrical structure, i.e. combination transformer, including threephase potential transformer, three-phase combination transformer
Deng.
In order to ensure the service behaviour of power distribution network transformer, it need to be detected, traditional detection power distribution network transformer
Method is single plane method, i.e., only carries out error-detecting to a wherein phase every time.Because detection when power distribution network transformer residing for condition with
Condition during its actual motion is often inconsistent, causes single plane method detection data truly to reflect true when transformer is run
Error characteristics.The defects of in order to overcome traditional detection method, trichotomy is generally used when detecting power distribution network transformer at present, it is logical
The actual motion condition for crossing simulation power distribution network transformer to carry out error-detecting to power distribution network transformer.However, using trichotomy
When carrying out site error detection to power distribution network transformer, due to limitation (such as a large amount of transformers installation bar out of doors of field condition
On tower), tend not to obtain three phase mains, even without external power source, this have impact on power distribution network transformer to a certain extent
The popularization and application of trichotomy error-detecting experiment.
The content of the invention
It is applied to trichotomy Site Detection distribution it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of
The experiment power supply of net transformer error, it can be embodied as the Site Detection power supply of power distribution network transformer error, and then be advantageous to match somebody with somebody
The popularization and application of the trichotomy error-detecting experiment of power network transformer.
The purpose of the present invention is achieved through the following technical solutions：It is mutual that one kind is applied to trichotomy Site Detection power distribution network
The experiment power supply of sensor error, including storage battery power supply administrative unit, adjustment unit, output unit, booster and current lifting device；
Storage battery power supply administrative unit, 120 ° of two-way three phase mains is respectively in for providing；
Adjustment unit, for obtaining two-way three phase mains output voltage, and carry out voltage magnitude regulation and two-way three-phase
Angular adjustment between signal, signal after then output is adjusted；
Output unit, for receiving adjustment unit output signal, and phase, frequency and amplitude regulation and optimization are carried out, so
The three-phase voltage signal after two-way regulation is exported afterwards；
Booster, subject electricity is added in for the three-phase voltage signal all the way of Rreceive output unit output, and by primary voltage
Press on transformer and standard potential transformer；
Current lifting device, for the another way three-phase voltage signal of Rreceive output unit output, and primary current is added in subject
On current transformer and standard current transformer.
Further, a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error, in addition to it is defeated
Enter unit, the input block is used for external external single phase power source, and external single phase power source is converted to and is respectively in 120 °
Two-way three phase mains.During present invention application, input block is to be used in the case of having external single phase power source, storage battery power supply management
Unit be no external single phase power source in the case of use.
Further, the input block includes phase-shifting unit and the power supply branching unit being connected with phase-shifting unit；
Phase-shifting unit, 120 ° of three-phase voltage is respectively in for external single phase power source output voltage to be converted to；
Power supply branching unit, for the voltage output of phase-shifting unit to be divided into two-way.
Further, the storage battery power supply administrative unit includes two power supply management branch roads, every power supply management branch road
Include dc source, inversion unit and the phase-shifting unit being sequentially connected with；
Dc source, for exporting DC voltage；
Inversion unit, the ac output voltage that the DC voltage inversion for dc source to be exported is 220V；
Phase-shifting unit, 120 ° of three-phase mains voltage is respectively in for the output voltage of inversion unit to be converted to.
Further, the adjustment unit includes two voltage-regulation branch roads, two voltage-regulation branch roads respectively corresponding to
Receive the voltage of two-way three phase mains output；Every voltage-regulation branch road includes voltage regulation unit, and is transmitted electricity for booster
Voltage-regulation branch road be provided with the phase adjustment unit that is connected with voltage regulation unit；
Voltage regulation unit, for realizing the pressure regulation of input voltage, with the accuracy of booster tension；
Phase adjustment unit, for adjusting the angle between two-way three-phase voltage signal.
Further, the voltage regulation unit includes coarse adjustment unit and is connected with fine-adjusting unit with coarse adjustment unit；
Coarse adjustment unit, for input voltage pressure regulation to 0~250V to be exported；
Fine-adjusting unit, for finely tuning the voltage of coarse adjustment unit output.
Further, the coarse adjustment unit uses each phase to realize that the fine-adjusting unit uses for 1kVA three-phase regulator
0.1kVA single-phase voltage regulator is realized.
Further, protection control unit is equipped with every voltage-regulation branch road, the protection control unit is used for real
Existing voltage-regulation branch road excessively stream, the detection and control of overvoltage, and controlling brancher disconnects when excessively stream or overvoltage occur.
Further, the protection control unit is using NA704L protection control modules.
Further, the output unit includes two output signals regulation branch roads, two output signals regulation branch roads point
It is not connected with booster and current lifting device, every output signal regulation branch road includes phase stabilization unit, the frequency being sequentially connected
Stable unit and amplitude stability unit；
Phase stabilization unit, for adjusting the three-phase voltage of adjustment unit output, to ensure that each phase voltage is mutually 120 °；
Frequency stabilization unit, for adjust adjustment unit output three-phase voltage, using ensure each phase frequency as 50Hz ±
0.2Hz；
Amplitude stability unit, for adjust adjustment unit output three-phase voltage in each phase amplitude, to ensure each phase amplitude
It is stable.
In summary, the invention has the advantages that：Overall structure of the present invention is simple, is easy to implement, and cost is low, this
During invention application, external single phase power source can be used to power in the case of with external single phase power source, in not extraneous power supply
In the case of using storage battery power supply administrative unit power so that the present invention application when can be power distribution network transformer error scene
Detection provides field test power supply, so as to improve the flexibility of field test power supply and applicability, is easy to smoothly open at the scene
Trichotomy error-detecting experiment is opened up, and then is advantageous to the popularization and application of the trichotomy error-detecting experiment of power distribution network transformer.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of a specific embodiment of the invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying 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 figure 1, a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error, including input
Unit, storage battery power supply administrative unit, adjustment unit, output unit, booster and current lifting device, wherein, input block, battery
Power management unit and output unit are connected with adjustment unit, and booster and current lifting device are connected with output unit.This implementation
The input block of example is used for external outside 220V single phase poaer supplies, and external single phase power source is converted into 220V and is respectively in 120 °
Two-way three phase mains；Storage battery power supply administrative unit, for providing 220V and being respectively in 120 ° of two-way three phase mains；Adjust
Unit is saved, for obtaining the two-way three-phase mains voltage of input block or the output of storage battery power supply administrative unit, and carries out voltage
Angular adjustment between amplitude regulation and two-way three-phase signal, signal after then output is adjusted；Output unit, for receiving
Adjustment unit output signal, and phase, frequency and amplitude regulation and optimization are carried out, then export the three-phase voltage after two-way regulation
Signal；Booster, for Rreceive output unit output three-phase voltage signal all the way, and by primary voltage be added in subject voltage it is mutual
On sensor and standard potential transformer；Current lifting device, for the another way three-phase voltage signal of Rreceive output unit output, and by one
Primary current is added on subject current transformer and standard current transformer.
Single-phase 220V Power converts are specifically voltage 220V and are mutually 120 ° of two-way three by the input block of the present embodiment
Phase power supply, wherein being used all the way for boosting, another way uses for up-flow；Storage battery power supply administrative unit provide voltage 220V and mutually
Into 120 ° of two-way three phase mains, wherein being used all the way for boosting, another way uses for up-flow.The adjustment unit of the present embodiment will
To carrying out voltage magnitude regulation from the two-way three-phase signal of input block or the output of storage battery power supply administrative unit, and to two-way
Angular adjustment between three-phase signal, output unit further optimize adjustment unit output signal, improve adjustment unit output
The quality of power supply of signal, i.e. frequency, phase, amplitude etc. meet related regulatory requirements.
Is there is provided when the present embodiment is applied for booster and current lifting device and be respectively in 120 ° of three phase mains, pass through booster general
Primary voltage is added on subject voltage transformer and standard potential transformer, and primary current is added in into subject electric current by current lifting device
On transformer and standard current transformer, and it is tested a terminal of voltage transformer and a terminal of subject current transformer
It is directly connected to, so as to realize the simulation of power distribution network transformer running status.
Embodiment 2：
The present embodiment is made that on the basis of embodiment 1 to be limited further below：The input block of the present embodiment includes
Phase-shifting unit and the power supply branching unit being connected with phase-shifting unit, wherein, phase-shifting unit is used to external single phase power source exporting electricity
Press and be converted to the three-phase voltage for being respectively in 120 °；Power supply branching unit, for the voltage output of phase-shifting unit to be divided into two-way.
The storage battery power supply administrative unit of the present embodiment includes two power supply management branch roads, and every power supply management branch road wraps
The dc source being sequentially connected with, inversion unit and phase-shifting unit are included, wherein, dc source, for exporting DC voltage；Inversion list
Member, the ac output voltage that the DC voltage inversion for dc source to be exported is 220V；Phase-shifting unit, for by inversion list
The output voltage of member is converted to and is respectively in 120 ° of three-phase mains voltage.The present embodiment in the specific implementation, input block and
The phase-shifting unit of both storage battery power supply administrative units uses model LSA-TH3P70Y phase shift blocks, power supply branching unit
Using the shunt module of model rfx2401 models, inversion unit uses YKDA-HT inversion modules, and dc source uses more piece
The battery pack that lithium battery is formed, it is preferred to use the lithium battery group that 15 section WB-LYP40AHA lithium batteries are formed, often saving output voltage is
3.0~4.0V, output voltage 48V after 15 section WB-LYP40AHA lithium battery series connection.
The adjustment unit of the present embodiment includes two voltage-regulation branch roads, and two voltage-regulation branch roads receive correspondingly
Input block or the two-way voltage of storage battery power supply administrative unit output.Every voltage-regulation branch road includes voltage regulation unit
And the protection control unit being connected with voltage regulation unit, and the voltage-regulation branch road transmitted electricity for booster is provided with and is serially connected with voltage
Phase adjustment unit between adjustment unit and protection control unit on circuit.The voltage regulation unit of the present embodiment, for reality
The pressure regulation of existing input voltage, with the accuracy of booster tension；Phase adjustment unit, for adjusting between two-way three-phase voltage signal
Angle；Protection control unit is used to realize voltage-regulation branch road excessively stream, the detection and control of overvoltage, and in excessively stream or crosses pressure
Controlling brancher disconnects when raw.The voltage regulation unit of the present embodiment includes coarse adjustment unit and is connected with fine setting list with coarse adjustment unit
Member, coarse adjustment unit are used to export input voltage pressure regulation to 0~250V, and fine-adjusting unit is used for the electricity for finely tuning the output of coarse adjustment unit
Pressure.In the specific implementation, coarse adjustment unit uses each phase to realize that fine-adjusting unit uses for 1kVA three-phase regulator to the present embodiment
0.1kVA single-phase voltage regulator realizes that the present embodiment in the specific implementation, is respectively mutually both needed to be equipped with a single-phase voltage regulator, realization pair
Three-phase regulator obtains the fine setting of voltage, to obtain more accurate voltage.
The output unit of the present embodiment includes two output signals and adjusts branch roads, two output signals regulation branch roads respectively with
Booster connects with current lifting device, and every output signal regulation branch road includes phase stabilization unit, the frequency stabilization being sequentially connected
Unit and amplitude stability unit.The phase stabilization unit of the present embodiment is used for the three-phase voltage for adjusting adjustment unit output, with true
Protect each phase voltage and be mutually 120 °；Frequency stabilization unit, for adjusting the three-phase voltage of adjustment unit output, to ensure each phase frequency
For 50Hz ± 0.2Hz；Amplitude stability unit, each phase amplitude in the three-phase voltage for adjusting adjustment unit output are each to ensure
Phase amplitude stability.The phase stabilization unit of the present embodiment uses SKWBG-PW4 phase stabilization modules, to the three of adjustment unit output
Phase voltage optimizes and stably, it is ensured that each phase voltage is mutually 120 degree.Frequency stabilization unit uses BCO6E frequency stabilization modules,
The three-phase voltage of adjustment unit output is optimized and stably, it is ensured that each phase frequency is 50Hz 0.2Hz.Amplitude stability unit
ARTHYLY A-3 amplitude stability modules, the three-phase voltage of adjustment unit output is optimized and stably, it is ensured that each phase amplitude is steady
It is fixed.
Two power supply management branch roads of the present embodiment connect one to one with two voltage-regulation branch roads, two voltage-regulations
Branch road connects one to one with two output signal regulation branch roads.The booster of the present embodiment and its output signal regulation of concatenation
Branch road, voltage-regulation branch road form voltage circuit；The output signal of current lifting device and its concatenation regulation branch road, voltage-regulation branch road structure
Into current loop.When the present embodiment is powered using external single phase power source, voltage circuit and current loop difference are one-to-one
Obtain the two-way three phase mains of power supply branching unit output；When the present embodiment is powered using storage battery power supply administrative unit, electricity
Push back road and the current loop one-to-one three phase mains for obtaining the output of bar power supply management branch road respectively.
The phase adjustment unit of the present embodiment uses VC850A phase adjustment blocks, realizes current loop and voltage circuit
Angle is adjusted, and to change the power factor of test system, realizes the simulation to live different capacity factor condition.The present embodiment
Control unit is protected using NA704L protection control modules, realize to voltage circuit and current loop excessively stream, overvoltage detection and
Control, once excessively stream, overvoltage occur, equipment disconnects automatically, to ensure the safety of equipment and personnel；
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error, it is characterised in that including electric power storage
Pond power management unit, adjustment unit, output unit, booster and current lifting device；
Storage battery power supply administrative unit, 120 ° of two-way three phase mains is respectively in for providing；
Adjustment unit, for obtaining two-way three phase mains output voltage, and carry out voltage magnitude regulation and two-way three-phase signal
Between angular adjustment, then output regulation after signal；
Output unit, for receiving adjustment unit output signal, and phase, frequency and amplitude regulation and optimization are carried out, it is then defeated
The three-phase voltage signal gone out after two-way regulation；
Booster, for Rreceive output unit output three-phase voltage signal all the way, and by primary voltage be added in subject voltage it is mutual
On sensor and standard potential transformer；
Current lifting device, for the another way three-phase voltage signal of Rreceive output unit output, and primary current is added in subject electric current
On transformer and standard current transformer.
2. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 1,
Characterized in that, also including input block, the input block is used for external external single phase power source, and external single phase power source is turned
It is changed to and is respectively in 120 ° of two-way three phase mains.
3. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 2,
Characterized in that, the input block includes phase-shifting unit and the power supply branching unit being connected with phase-shifting unit；
Phase-shifting unit, 120 ° of three-phase voltage is respectively in for external single phase power source output voltage to be converted to；
Power supply branching unit, for the voltage output of phase-shifting unit to be divided into two-way.
4. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 1,
Characterized in that, the storage battery power supply administrative unit includes two power supply management branch roads, every power supply management branch road includes
Dc source, inversion unit and the phase-shifting unit being sequentially connected with；
Dc source, for exporting DC voltage；
Inversion unit, the ac output voltage that the DC voltage inversion for dc source to be exported is 220V；
Phase-shifting unit, 120 ° of three-phase mains voltage is respectively in for the output voltage of inversion unit to be converted to.
5. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 1,
Characterized in that, the adjustment unit includes two voltage-regulation branch roads, two voltage-regulation branch roads are corresponding respectively to receive two
The voltage of road three phase mains output；Every voltage-regulation branch road includes voltage regulation unit, and is the voltage of booster transmission of electricity
Regulation branch road is provided with the phase adjustment unit being connected with voltage regulation unit；
Voltage regulation unit, for realizing the pressure regulation of input voltage, with the accuracy of booster tension；
Phase adjustment unit, for adjusting the angle between two-way three-phase voltage signal.
6. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 5,
Characterized in that, the voltage regulation unit includes coarse adjustment unit and is connected with fine-adjusting unit with coarse adjustment unit；
Coarse adjustment unit, for input voltage pressure regulation to 0~250V to be exported；
Fine-adjusting unit, for finely tuning the voltage of coarse adjustment unit output.
7. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 6,
Characterized in that, the coarse adjustment unit uses each phase to realize that the fine-adjusting unit uses 0.1kVA for 1kVA three-phase regulator
Single-phase voltage regulator realize.
8. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 5,
Characterized in that, being equipped with protection control unit on every voltage-regulation branch road, the protection control unit is used to realize voltage
Branch road excessively stream, the detection and control of overvoltage are adjusted, and controlling brancher disconnects when excessively stream or overvoltage occur.
9. a kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error according to claim 8,
Characterized in that, the protection control unit is using NA704L protection control modules.
10. one kind according to any one in claim 1~9 is missed suitable for trichotomy Site Detection power distribution network transformer
The experiment power supply of difference, it is characterised in that the output unit includes two output signals and adjusts branch road, two output signal regulations
Branch road is connected with booster and current lifting device respectively, and every output signal regulation branch road includes the phase stabilization list being sequentially connected
Member, frequency stabilization unit and amplitude stability unit；
Phase stabilization unit, for adjusting the three-phase voltage of adjustment unit output, to ensure that each phase voltage is mutually 120 °；
Frequency stabilization unit, for adjusting the three-phase voltage of adjustment unit output, to ensure each phase frequency as 50Hz ± 0.2Hz；
Amplitude stability unit, for adjust adjustment unit output three-phase voltage in each phase amplitude, to ensure each phase amplitude stability.
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| CN201711008597.4A CN107515322A (en) | 2017-10-25 | 2017-10-25 | A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error |
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Cited By (6)
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| CN108318783A (en) * | 2018-02-06 | 2018-07-24 | 国网四川省电力公司电力科学研究院 | A kind of current transformer traveling wave progress of disease model and its construction method |
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| CN113985096A (en) * | 2021-10-26 | 2022-01-28 | 广东电网有限责任公司 | Mutual inductor wiring recognition device |
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| CN116577536A (en) * | 2023-07-10 | 2023-08-11 | 烟台东方威思顿电气有限公司 | Three-phase alternating current standard source based on waveform-amplitude separation control |
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| CN108318783A (en) * | 2018-02-06 | 2018-07-24 | 国网四川省电力公司电力科学研究院 | A kind of current transformer traveling wave progress of disease model and its construction method |
| CN108318783B (en) * | 2018-02-06 | 2023-11-28 | 国网四川省电力公司电力科学研究院 | Current transformer traveling wave transformation model and construction method thereof |
| CN110297206A (en) * | 2019-06-06 | 2019-10-01 | 国网浙江省电力有限公司电力科学研究院 | Equipment for three-phase electrical energy meter power source based on IR46 standard |
| CN110297206B (en) * | 2019-06-06 | 2021-06-25 | 国网浙江省电力有限公司营销服务中心 | Three-phase electric energy meter calibrating device power source based on IR46 standard |
| CN114002639A (en) * | 2021-10-19 | 2022-02-01 | 华中科技大学 | Relative error self-monitoring system and method of electric signal acquisition circuit |
| CN113985096A (en) * | 2021-10-26 | 2022-01-28 | 广东电网有限责任公司 | Mutual inductor wiring recognition device |
| CN116577536A (en) * | 2023-07-10 | 2023-08-11 | 烟台东方威思顿电气有限公司 | Three-phase alternating current standard source based on waveform-amplitude separation control |
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