CN109212456A - A kind of method and system of the measurement winding voltage measurement stability of determining power supply type voltage transformer - Google Patents
A kind of method and system of the measurement winding voltage measurement stability of determining power supply type voltage transformer Download PDFInfo
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- CN109212456A CN109212456A CN201811044531.5A CN201811044531A CN109212456A CN 109212456 A CN109212456 A CN 109212456A CN 201811044531 A CN201811044531 A CN 201811044531A CN 109212456 A CN109212456 A CN 109212456A
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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 method and system of the measurement winding voltage of determining power supply type voltage transformer measurement stability, it include: to monitor the primary side voltage of power supply type voltage transformer under measurement winding voltage and different capacity load of the power winding voltages of power supply type voltage transformer under different capacity load after error compensation respectively when measuring winding and being in unloaded and full load condition；Obtain the measurement error of the measurement winding voltage and primary side voltage under each power load；Respectively by under each power load measurement error and default error threshold be compared, stability is measured with the measurement winding voltage of the determination power supply type voltage transformer.The present invention can measure measurement winding and be in the unloaded measurement error with the voltage measurement winding of the power supply type voltage transformer under different capacity load when full load condition, so that it is determined that the measurement winding voltage of power supply type voltage transformer measures stability, data supporting is provided for large capacity power supply mutual inductor on site operation.
Description
Technical field
The present invention relates to high voltage electric equipment technical fields, and mutual more particularly, to a kind of determining power supply type voltage
The method and system of the measurement winding voltage measurement stability of sensor.
Background technique
Large capacity power supply mutual inductor can take electricity from 110kV and above high voltage transmission line road, be transformed to 380V or 220V
Directly feed user's use.The mutual inductor directly can take electricity from high-voltage line, simplified electrical network level, the brief method of operation, very
Electricity consumption reliability is increased substantially, is the useful supplement to Flexible Power Grid power supply mode at this stage.For equipment, from high pressure
It is converted into 380V or 220V, the loss of transformer can be greatly reduced.As shown in Figure 1, for large capacity power supply mutual inductor
Power supply plan schematic diagram.
Large capacity power supply mutual inductor is particularly suitable for power supply from far-off regions, is not easy to set up 10kV with cable for single load
Road is directly connected from neighbouring high voltage transmission line road.Such as petroleum, gas engineering, mining area, frontier guards, to construction when
Between and the micro transformer station that requires of occupied area, emergency service restore, substation's station local coordinate frame can also be replaced, to power transformation
Load of standing power supply.Large capacity power supply mutual inductor includes power output winding and voltage measurement winding.Power output winding is used for
To customer power supply, electrical energy measurement is may be implemented in voltage measurement winding.
Since voltage measurement winding is used for the electrical energy measurement of mutual inductor, therefore, it is necessary to voltage measurement windings with good
Measure stability.But under big output power, the measurement stability of voltage measurement winding how is determined, be the skill for needing to solve
Art problem.
Summary of the invention
The present invention proposes a kind of method of the measurement winding voltage measurement stability of determining power supply type voltage transformer and is
System, to solve the problems, such as how to determine the voltage stability of the measurement winding of power supply type voltage transformer.
To solve the above-mentioned problems, according to an aspect of the invention, there is provided a kind of determining power supply type voltage transformer
Measurement winding voltage measurement stability method, which is characterized in that the described method includes:
Step 1, the compensating parameter of step-up error compensating unit, and to being connected on the measurement winding of power supply type voltage transformer
Measurement winding load be adjusted, so that the measurement winding is in light condition；
Step 2, it is adjusted according to preset adjusting step-length and is connected on the power output winding of the power supply type voltage transformer
Power load, monitor different capacity load under the power supply type voltage transformer power winding voltages after error compensation
Measure the primary side voltage of the power supply type voltage transformer under winding voltage and different capacity load；
Step 3；Obtain the measurement winding voltage under each power load and primary respectively using mutual-inductor tester
The measurement error of side voltage；
Step 4, respectively by under each power load measurement error and default error threshold be compared, judge described every
Whether the measurement error under a power load, which is respectively less than, is equal to the default error threshold, if so, at the measurement winding
When light condition, the measurement winding load connected on measurement winding is adjusted, the measurement winding is made to be in fully loaded shape
State, and return step 2；When the measurement winding is in full load condition, it is determined that the measurement of the power supply type voltage transformer
It is to stablize that winding voltage, which measures stability,；Stablize conversely, determining that the measurement winding voltage of the power supply type voltage transformer measures
Property to be unstable.
Preferably, wherein the method also includes:
When regulation power load makes the primary side voltage drop of the power supply type voltage transformer down to default primary side electricity
When pressing the preset percentage of threshold value, the transformation ratio of pressure regulator is adjusted, so that the power supply type voltage transformer primary side voltage
Meet test requirements document.
Preferably, wherein the measurement error, comprising: than difference and angular difference, the default error threshold includes: that default ratio is poor
Error threshold and preset angle difference error threshold.
Preferably, wherein whether the measurement error judged under each power load, which is respectively less than, is equal to the default error
Threshold value includes:
It is described than difference error threshold to judge whether the ratio difference under each power load is respectively less than equal to, meanwhile, angular difference is
No be respectively less than is equal to the angular difference error threshold.
Preferably, wherein the method also includes:
When the measurement winding voltage of power supply type voltage transformer measurement stability is unstable, alignment error
The compensating parameter of compensating unit, until the measurement winding voltage measurement stability of the power supply type voltage transformer is to stablize.
According to another aspect of the present invention, the measurement winding voltage for providing a kind of determining power supply type voltage transformer is surveyed
The system for measuring stability, which is characterized in that the system comprises:
Setup module, for the compensating parameter of step-up error compensating unit, and to the measurement of power supply type voltage transformer around
The measurement winding load connected in group is adjusted, and the measurement winding is made to be in light condition；
Voltage monitoring module, for adjusting the power output of the power supply type voltage transformer according to preset adjusting step-length
The power load connected on winding monitors the power winding voltages of the power supply type voltage transformer under different capacity load through accidentally
The primary side voltage of the power supply type voltage transformer under the compensated measurement winding voltage of difference and different capacity load；
Measurement error obtains module, for obtaining the measurement under each power load respectively using mutual-inductor tester
The measurement error of winding voltage and primary side voltage；
Voltage measurement judgement of stability module, for respectively by the measurement error and default error threshold under each power load
Value is compared, and is judged whether the measurement error under each power load is respectively less than and is equal to the default error threshold, if
It is then when the measurement winding is in light condition, to be adjusted to the measurement winding load connected on measurement winding, make institute
It states measurement winding and is in full load condition, and enter voltage monitoring module；When the measurement winding is in full load condition, it is determined that
The measurement winding voltage measurement stability of the power supply type voltage transformer is to stablize；Conversely, determining that the power supply type voltage is mutual
The measurement winding voltage measurement stability of sensor is unstable.
Preferably, wherein the system also includes:
Primary side voltage regulator module, for making the primary side of the power supply type voltage transformer when regulation power load
Voltage drop down to default primary side voltage threshold preset percentage when, the transformation ratio of pressure regulator is adjusted, so that the power supply
Type voltage transformer primary side voltage meets test requirements document.
Preferably, wherein the measurement error, comprising: than difference and angular difference, the default error threshold includes: that default ratio is poor
Error threshold and preset angle difference error threshold.
Preferably, wherein the voltage measurement judgement of stability module, judges that the measurement error under each power load is
It is no respectively less than to include: equal to the default error threshold
It is described than difference error threshold to judge whether the ratio difference under each power load is respectively less than equal to, meanwhile, angular difference is
No be respectively less than is equal to the angular difference error threshold.
Preferably, wherein the system also includes:
Error compensation adjusts module, measures and stablizes for the measurement winding voltage when the power supply type voltage transformer
Property when being unstable, the compensating parameter of alignment error compensating unit, until the measurement winding electricity of the power supply type voltage transformer
Pressure measurement stability is to stablize.
The present invention provides a kind of measurement winding voltage of determining power supply type voltage transformer measurement stability method and
System, comprising: connect power load on the power winding of power supply type voltage transformer, the connection measurement winding on measurement winding
Load is stepped up power load according to preset adjusting step-length respectively when measuring winding in unloaded and full load condition, supervises
Survey measurement winding voltage of the power winding voltages of the power supply type voltage transformer under different capacity load after error compensation
And under different capacity load the power supply type voltage transformer primary side voltage；Obtain the survey under each power load
Measure the measurement error of winding voltage and primary side voltage；And respectively by the measurement error and default error threshold under each power load
Value is compared, and measures stability with the measurement winding voltage of the determination power supply type voltage transformer.The present invention can measure
Power load from 0 to fully loaded range in fluctuate under, when measurement winding is in unloaded and full load condition under different capacity load
The measurement error of the voltage measurement winding of power supply type voltage transformer, so that it is determined that the measurement winding electricity of power supply type voltage transformer
Pressure measurement stability provides data supporting for large capacity power supply mutual inductor on site operation.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is large capacity power supply transformer for supplying power scheme schematic diagram；
Fig. 2 is to measure stability according to the measurement winding voltage of the determination power supply type voltage transformer of embodiment of the present invention
Method 200 flow chart；
Fig. 3 is the voltage stability according to the measurement winding of the determination power supply type voltage transformer of embodiment of the present invention
Schematic diagram；
Fig. 4 is to measure stability according to the measurement winding voltage of the determination power supply type voltage transformer of embodiment of the present invention
System 400 structural schematic diagram.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical module/element uses identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 2 is to measure stability according to the measurement winding voltage of the determination power supply type voltage transformer of embodiment of the present invention
Method 200 flow chart.As shown in Fig. 2, the measurement for the determination power supply type voltage transformer that embodiments of the present invention provide
Winding voltage measurement stability method can measure power load from 0 to fully loaded range in fluctuate under, measurement winding be in
The measurement error of the voltage measurement winding of power supply type voltage transformer when unloaded and full load condition under different capacity load, thus
It determines the measurement winding voltage measurement stability of power supply type voltage transformer, is provided for large capacity power supply mutual inductor on site operation
Data supporting.The measurement winding voltage measurement stability for the determination power supply type voltage transformer that embodiments of the present invention provide
Method is since step 201 place, in the compensating parameter of step 201 step-up error compensating unit, and to power supply type voltage transformer
Measurement winding on the measurement winding load that connects be adjusted, so that the measurement winding is in light condition.
Preferably, the power output of the power supply type voltage transformer is adjusted according to preset adjusting step-length in step 202
The power load connected on winding monitors the power winding voltages of the power supply type voltage transformer under different capacity load through accidentally
The primary side voltage of the power supply type voltage transformer under the compensated measurement winding voltage of difference and different capacity load.
Preferably, the measurement winding under each power load is obtained respectively using mutual-inductor tester in step 203
The measurement error of voltage and primary side voltage.
Preferably, wherein the measurement error, comprising: than difference and angular difference, the default error threshold includes: that default ratio is poor
Error threshold and preset angle difference error threshold.
Preferably, step 204 respectively by under each power load measurement error and default error threshold be compared,
Judge whether the measurement error under each power load is respectively less than and be equal to the default error threshold, if so, when described
When measurement winding is in light condition, the measurement winding load connected on measurement winding is adjusted, the measurement winding is made
In full load condition, and return step 202；When the measurement winding is in full load condition, it is determined that the power supply type voltage
The measurement winding voltage measurement stability of mutual inductor is to stablize；Conversely, determining the measurement winding of the power supply type voltage transformer
Voltage measurement stability is unstable.
Preferably, wherein whether the measurement error judged under each power load, which is respectively less than, is equal to the default error
Threshold value includes:
It is described than difference error threshold to judge whether the ratio difference under each power load is respectively less than equal to, meanwhile, angular difference is
No be respectively less than is equal to the angular difference error threshold.
Preferably, wherein the method also includes:
When regulation power load makes the primary side voltage drop of the power supply type voltage transformer down to default primary side electricity
When pressing the preset percentage of threshold value, the transformation ratio of pressure regulator is adjusted, so that the power supply type voltage transformer primary side voltage
Meet test requirements document.
During the test, regulation power load can make the primary side voltage of power supply type voltage transformer reduce, in order to
So that the power supply type voltage transformer primary side voltage meets test requirements document, during the test, when the power supply type voltage
The primary side voltage drop of mutual inductor down to power-frequency voltage preset percentage when, adjust the transformation ratio of pressure regulator.
Preferably, wherein the method also includes:
When the measurement winding voltage of power supply type voltage transformer measurement stability is unstable, alignment error
The compensating parameter of compensating unit, until the measurement winding voltage measurement stability of the power supply type voltage transformer is to stablize.
Fig. 3 is the voltage stability according to the measurement winding of the determination power supply type voltage transformer of embodiment of the present invention
Schematic diagram.As shown in figure 3, on the power winding of power supply type voltage transformer connect power load Z1, load range be 0 to
60kVA, connection measurement winding load Z2, mutual in the primary side parallel connection normal voltage of power supply type voltage transformer on measurement winding
Sensor is used to measure primary side voltage.During determining voltage stability, firstly, the compensation of step-up error compensating unit is joined
Number, and the measurement winding load connected on the measurement winding of power supply type voltage transformer is adjusted, make the measurement winding
In light condition.Then, it is adjusted on the power output winding of the power supply type voltage transformer according to preset adjusting step-length
The power load of connection monitors the power winding voltages of the power supply type voltage transformer under different capacity load through error compensation
The primary side voltage of the power supply type voltage transformer under rear measurement winding voltage and different capacity load.Then, it utilizes
Mutual-inductor tester determines the difference of the ratio under each power load and angular difference.Finally, the measurement under each power load is missed respectively
Poor and default error threshold is compared, and is judged whether ratio difference and angular difference under each power load are respectively less than to be equal to and is preset
Than difference error threshold and preset angle difference error threshold.If meeting simultaneously, to the measurement winding load that connects on measurement winding into
Row adjustment, makes the measurement winding be in full load condition, then returns to above-mentioned voltage monitoring step, is in fully loaded to measurement winding
Error when state is calculated the voltage measurement stability to determine measurement winding.If not meeting simultaneously, it is determined that the confession
The measurement winding voltage measurement stability of electric type voltage transformer is unstable.Then, the compensation ginseng of alignment error compensating unit
Number, until the measurement winding voltage measurement stability of the power supply type voltage transformer is to stablize.
Fig. 4 is to measure stability according to the measurement winding voltage of the determination power supply type voltage transformer of embodiment of the present invention
System 400 structural schematic diagram.As shown in figure 4, the determination power supply type voltage transformer that embodiments of the present invention provide
Measure the system 400 of winding voltage measurement stability, comprising: setup module 401, voltage monitoring module 402, measurement error obtain
Module 403 and voltage measurement judgement of stability module 404.
Preferably, the setup module 401, for the compensating parameter of step-up error compensating unit, and to power supply type voltage
The measurement winding load connected on the measurement winding of mutual inductor is adjusted, and the measurement winding is made to be in light condition.
Preferably, the voltage monitoring module 402, it is mutual for adjusting the power supply type voltage according to preset adjusting step-length
The power load connected on the power output winding of sensor monitors the function of the power supply type voltage transformer under different capacity load
The power supply type voltage transformer under measurement winding voltage and different capacity load of the rate winding voltage after error compensation
Primary side voltage.
Preferably, the measurement error obtains module 403, negative for obtaining each power respectively using mutual-inductor tester
The measurement error of the measurement winding voltage and primary side voltage under lotus.
Preferably, wherein the measurement error, comprising: than difference and angular difference, the default error threshold includes: that default ratio is poor
Error threshold and preset angle difference error threshold.
Preferably, the voltage measurement judgement of stability module 404, for respectively missing the measurement under each power load
Poor and default error threshold is compared, and judges whether the measurement error under each power load is respectively less than equal to described pre-
If error threshold, if so, when the measurement winding is in light condition, to the measurement winding load connected on measurement winding
It is adjusted, so that the measurement winding is in full load condition, and enter voltage monitoring module；When the measurement winding is in fully loaded
When state, it is determined that the measurement winding voltage measurement stability of the power supply type voltage transformer is to stablize；Conversely, described in determining
The measurement winding voltage measurement stability of power supply type voltage transformer is unstable.
Preferably, wherein the voltage measurement judgement of stability module, judges that the measurement error under each power load is
No be respectively less than equal to the default error threshold includes: to judge whether the ratio difference under each power load is respectively less than equal to described
Than difference error threshold, meanwhile, whether angular difference, which is respectively less than, is equal to the angular difference error threshold.
Preferably, wherein the system also includes:
Primary side voltage regulator module, for making the primary side of the power supply type voltage transformer when regulation power load
Voltage drop down to default primary side voltage threshold preset percentage when, the transformation ratio of pressure regulator is adjusted, so that the power supply
Type voltage transformer primary side voltage meets test requirements document.
Preferably, wherein the system also includes:
Error compensation adjusts module, measures and stablizes for the measurement winding voltage when the power supply type voltage transformer
Property when being unstable, the compensating parameter of alignment error compensating unit, until the measurement winding electricity of the power supply type voltage transformer
Pressure measurement stability is to stablize.
The system 400 of the measurement winding voltage measurement stability of the determination power supply type voltage transformer of the embodiment of the present invention
With the method 200 of the measurement winding voltage measurement stability of the determination power supply type voltage transformer of another embodiment of the invention
Corresponding, details are not described herein.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
Defined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the invention
In range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (10)
1. a kind of method of the measurement winding voltage measurement stability of determining power supply type voltage transformer, which is characterized in that described
Method includes:
Step 1, the compensating parameter of step-up error compensating unit, and the survey to being connected on the measurement winding of power supply type voltage transformer
Amount winding load is adjusted, and the measurement winding is made to be in light condition；
Step 2, the function connected on the power output winding of the power supply type voltage transformer is adjusted according to preset adjusting step-length
Rate load monitors measurement of the power winding voltages of the power supply type voltage transformer under different capacity load after error compensation
The primary side voltage of the power supply type voltage transformer under winding voltage and different capacity load；
Step 3；Obtain the measurement winding voltage and primary side electricity under each power load respectively using mutual-inductor tester
The measurement error of pressure；
Step 4, respectively by under each power load measurement error and default error threshold be compared, judge each function
Whether the measurement error under rate load, which is respectively less than, is equal to the default error threshold, if so, when the measurement winding is in sky
When load state, the measurement winding load connected on measurement winding is adjusted, the measurement winding is made to be in full load condition, and
Return step 2；When the measurement winding is in full load condition, it is determined that the measurement winding electricity of the power supply type voltage transformer
Pressure measurement stability is to stablize；Conversely, the measurement winding voltage measurement stability for determining the power supply type voltage transformer is not
Stablize.
2. the method according to claim 1, wherein the method also includes:
When regulation power load makes the primary side voltage drop of the power supply type voltage transformer down to default primary side voltage threshold
When the preset percentage of value, the transformation ratio of pressure regulator is adjusted, so that the power supply type voltage transformer primary side voltage meets
Test requirements document.
3. the method according to claim 1, wherein the measurement error, comprising: described pre- than difference and angular difference
If error threshold includes: default than difference error threshold and preset angle difference error threshold.
4. according to the method described in claim 3, it is characterized in that, the measurement error judged under each power load whether
Respectively less than being equal to the default error threshold includes:
It is described than difference error threshold to judge whether the ratio difference under each power load is respectively less than equal to, meanwhile, whether angular difference is equal
Less than or equal to the angular difference error threshold.
5. the method according to claim 1, wherein the method also includes:
When the measurement winding voltage of power supply type voltage transformer measurement stability is unstable, alignment error compensation
The compensating parameter of unit, until the measurement winding voltage measurement stability of the power supply type voltage transformer is to stablize.
6. a kind of system of the measurement winding voltage measurement stability of determining power supply type voltage transformer, which is characterized in that described
System includes:
Setup module, for the compensating parameter of step-up error compensating unit, and on the measurement winding of power supply type voltage transformer
The measurement winding load of connection is adjusted, and the measurement winding is made to be in light condition；
Voltage monitoring module, for adjusting the power output winding of the power supply type voltage transformer according to preset adjusting step-length
The power load of upper connection, the power winding voltages for monitoring the power supply type voltage transformer under different capacity load are mended through error
The primary side voltage of the power supply type voltage transformer under measurement winding voltage and different capacity load after repaying；
Measurement error obtains module, for obtaining the measurement winding under each power load respectively using mutual-inductor tester
The measurement error of voltage and primary side voltage；
Voltage measurement judgement of stability module, for respectively by under each power load measurement error and default error threshold into
Row compares, and judges whether the measurement error under each power load is respectively less than and is equal to the default error threshold, if so,
When the measurement winding is in light condition, the measurement winding load connected on measurement winding is adjusted, the survey is made
Amount winding is in full load condition, and enters voltage monitoring module；When the measurement winding is in full load condition, it is determined that described
The measurement winding voltage measurement stability of power supply type voltage transformer is to stablize；Conversely, determining the power supply type voltage transformer
Measurement winding voltage measurement stability be it is unstable.
7. system according to claim 6, which is characterized in that the system also includes:
Primary side voltage regulator module, for making the primary side voltage of the power supply type voltage transformer when regulation power load
When being reduced to the preset percentage of default primary side voltage threshold, the transformation ratio of pressure regulator is adjusted, so that the power supply type is electric
Pressure mutual inductor primary side voltage meets test requirements document.
8. system according to claim 6, which is characterized in that the measurement error, comprising: described pre- than difference and angular difference
If error threshold includes: default than difference error threshold and preset angle difference error threshold.
9. system according to claim 8, which is characterized in that in the voltage measurement judgement of stability module, judgement is every
Whether the measurement error under a power load is respectively less than includes: equal to the default error threshold
It is described than difference error threshold to judge whether the ratio difference under each power load is respectively less than equal to, meanwhile, whether angular difference is equal
Less than or equal to the angular difference error threshold.
10. system according to claim 6, which is characterized in that the system also includes:
Error compensation adjusts module, is for the measurement winding voltage measurement stability when the power supply type voltage transformer
When unstable, the compensating parameter of alignment error compensating unit, until the measurement winding voltage of the power supply type voltage transformer is surveyed
Measuring stability is to stablize.
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| CN201811044531.5A CN109212456B (en) | 2018-09-07 | 2018-09-07 | Method and system for determining measurement stability of measurement winding voltage of power supply type voltage transformer |
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