CN110146762A - A kind of detachable loading tests device suitable for intelligent substation - Google Patents
A kind of detachable loading tests device suitable for intelligent substation Download PDFInfo
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- CN110146762A CN110146762A CN201910485702.6A CN201910485702A CN110146762A CN 110146762 A CN110146762 A CN 110146762A CN 201910485702 A CN201910485702 A CN 201910485702A CN 110146762 A CN110146762 A CN 110146762A
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- voltage
- current
- acquisition processor
- loading tests
- data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The present invention relates to a kind of detachable loading tests devices suitable for intelligent substation, including current acquisition processor, voltage acquisition processor；Current acquisition processor and voltage acquisition processor are separatedly installed, and the interface that the two combination can be made to connect and carry out data transmission is provided therebetween；The detachable loading tests device further includes being set in current acquisition processor or voltage acquisition processor and being used to handle current sampling data and voltage sample data obtaining electric current and the processor of the amplitude of voltage and phase relation, being connected with processor and being used to be operated and be shown the amplitude of electric current and voltage and the human-computer interaction interface of phase relation.The present invention can simplify loading tests work, ensure that test result is accurate and reliable and ensuring that voltage and current collected is all from equipment under test, overcomes traditional test mode long cable is needed to draw and connect voltage, the long problem of heavy workload, time of measuring.
Description
Technical field
The present invention relates to the loading tests fields of intelligent substation in electric system, and in particular to loading tests use
Device.
Background technique
Loading tests are to ensure secondary device electric current and voltage phase sequence, the correct important detection means of polarity, be it is newly-built and
The test job that improved substation must carry out when putting into operation is the premise that ensures power equipment and can be safely operated.With
Intelligent substation puts into operation being continuously increased of quantity, and puts forward new requirements to loading tests work, while bringing new ask
Topic and challenge.
As shown in Fig. 1, the operating mode of intelligent substation loading tests is at present: go to battery limits switch on the spot with
The amplitude and phase angle of voltage and current are measured on the basis of substation's station alternating voltage.This mode uses exchange as base using station
Standard, rather than equipment secondary voltage makees benchmark, there are certain errors.Meanwhile for the three-winding transformer of large-scale 220kV substation
Loading tests, 220KV, 110kV, 10kV equipment are located at different area and apart from far, and whens loading tests needs to take same
A voltage (substation uses alternating voltage in station) usually requires very long cable and the voltage is guided to different voltages as benchmark
The interval on the spot in grade equipment area, is inserted into loading tests instrument, clamps electric current with clamp on amperemeter, realizes loading tests,
Its loading tests requires as follows:
1) test needs four people to complete, wherein a people takes charge and guards, other three people carry out test job, and a people is responsible for behaviour
Make instrument, a people is responsible for wiring, and a people is responsible for recording result；
2) tester in order respectively measures the voltage and current amplitude and phase of 220kV, 110kV, 10kV in test.
3) voltage reference in test is derived from same voltage, guides to 220kV measurement point by cable, then guide to respectively
110kV measurement point and 10kV measurement point.
It can be seen that the device for carrying out loading tests to equipment in intelligent substation at present includes for guiding benchmark electric
The cable of pressure and common loading tests instrument.
Although above-mentioned loading tests mode and corollary apparatus can carry out electric current and voltage phase sequence to smart substation equipment
With polar check, but since the reference voltage of use and the reference voltage of physical device are inconsistent in phase, test is obtained
Voltage-current relationship can not entirely accurate reflection equipment under test voltage and electric current actual relationship, actual load function can not be calculated
Rate situation causes loading tests result sufficiently complete.Meanwhile it needing that reference voltage is guided to difference with cable in test process
Voltage class battery limits measure, and need longer cable even to need to be connected with more cables, operation element amount ratio
Larger and reliability is lower.In addition, according to the test process of this mode it is found that a people is needed to be responsible for wiring in test process
And ensure that wiring is firm, people's load operation tester, cannot as traditional substation wiring and operation tester same
It in equipment room septal area, can be completed by a people, operation is very inconvenient, and manpower and time consumption are all very big, is unable to satisfy " power transformation
The demand for development of O&M integration ＂.
Summary of the invention
It being capable of loading tests in simplified intelligent substation the object of the present invention is to provide one kind, it is ensured that test effect is accurate
Completely, and reduce needed for manpower detachable loading tests device.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of detachable loading tests device suitable for intelligent substation, for the equipment under test in intelligent substation
Loading tests are carried out, the detachable loading tests device suitable for intelligent substation includes:
Current acquisition processor, the current acquisition processor includes the electricity for electric current being sampled and being obtained current sampling data
Flow sampling unit；
Voltage acquisition processor, the voltage acquisition processor includes the electricity for voltage being sampled and being obtained voltage sample data
Press sampling unit；
The current acquisition processor and the voltage acquisition processor are separatedly installed, and the current acquisition processor and institute
State the interface for being provided between voltage acquisition processor and the two combination capable of being made to connect and carry out data transmission；
The detachable loading tests device suitable for intelligent substation further includes being set to the current acquisition processing
Be used to handle the current sampling data and the voltage sample data in device or the voltage acquisition processor with
Electric current and the processor of the amplitude of voltage and phase relation are obtained, is connected with the processor and is used to be operated and be shown
Show the amplitude of electric current and voltage and the human-computer interaction interface of phase relation.
Preferably, the current sampling unit includes visiting for detecting the current detecting of electric current and output electric current measure signal
Head converts the current detection signal in required current range and exporting the current regulating circuit, right of electric current conversion signal
The electric current conversion signal carries out A/D conversion and exports the electric current A/D conversion circuit of digital current signal, to the digital current
Current control CPU that signal is handled, for making the current control CPU realize the first clock synchronization mould of markers overlaying function
Block, the first data memory module for storing the current data obtained after the current control CPU processing；
The voltage sampling unit includes for detecting the voltage tester probe of voltage and voltage sense signal, by the electricity
Pressure detection signal is converted to the voltage conditioning circuit of output voltage conversion signal, converting in required voltage range and to the voltage
Signal carries out A/D conversion and exports the voltage A/D conversion circuit of digital voltage signal, handles the digital voltage signal
Voltage control CPU, for making voltage control CPU realize the second clock synchronization module of markers overlaying function, for storing
State the second data memory module of the voltage data obtained after voltage control CPU processing.
Preferably, the electric current A/D conversion circuit is integrated in the current control CPU, the voltage A/D conversion circuit
It is integrated in the voltage control CPU.
Preferably, the current acquisition processor further includes the first power module, and the voltage acquisition processor further includes
Second power supply module.
Preferably, the processor is integrated with the current control CPU or voltage control CPU.
Preferably, the interface include transmission clock synchronization data and for realizing the first clock synchronization module and second pair described
When module between time adjustment function clock synchronization interface, be used for transmission current data or voltage data and realize the current control
The data interaction interface of data-transformation facility between CPU and voltage control CPU.
Preferably, the clock synchronization interface, the data interaction interface are all made of plug-in interface.
Preferably, the processor and the human-computer interaction interface are set in the current acquisition processor and make described
Current acquisition processor becomes host, and the voltage acquisition processor becomes slave.
Preferably, the human-computer interaction interface uses touch screen.
Due to the above technical solutions, the present invention has the following advantages over the prior art: the present invention can satisfy
The demand of complete loading tests is carried out to intelligent substation, can greatly simplify loading tests work, by ensuring
The voltage and current of acquisition is all from equipment under test and ensures that test result is accurate and reliable, overcomes traditional test mode and needs long electricity
Cable, which draws, connects voltage, the long problem of heavy workload, time of measuring.
Detailed description of the invention
Attached drawing 1 is traditional loading tests scheme schematic diagram.
Attached drawing 2 is the structural block diagram of the detachable loading tests device suitable for intelligent substation of the invention.
Attached drawing 3 is current acquisition processing the detachable loading tests device suitable for intelligent substation of the invention
The functional block diagram of device.
Attached drawing 4 is voltage acquisition processing the detachable loading tests device suitable for intelligent substation of the invention
The functional block diagram of device.
Specific embodiment
The invention will be further described for embodiment shown in reference to the accompanying drawing.
Embodiment one: as shown in Fig. 2, a kind of detachable loading tests device suitable for intelligent substation, packet
Include current acquisition processor and voltage acquisition processor.Current acquisition processor and voltage acquisition processor are separatedly installed, and
Being provided between current acquisition processor and voltage acquisition processor both can make combination connection and what is carried out data transmission connect
Mouthful.
As shown in Fig. 3, current acquisition processor includes the electric current for electric current being sampled and being obtained current sampling data
Sampling unit.Current sampling unit includes that the electric current for connecting equipment under test and detecting electric current and output electric current measure signal is examined
Probing head converts current detection signal in required current range and exporting the current regulating circuit, right of electric current conversion signal
Electric current conversion signal carries out A/D conversion and exports the electric current A/D conversion circuit of digital current signal, carries out to digital current signal
The current control CPU of processing, for make current control CPU realize markers overlaying function the first clock synchronization module, for storing electricity
First data memory module of the current data obtained after flow control CPU processing.Current detecting probe, current regulating circuit, electricity
Stream A/D conversion circuit, current control CPU are sequentially connected, the first clock synchronization module, the first data memory module respectively with current control
CPU is connected, and wherein electric current A/D conversion circuit can be using the scheme being integrated in current control CPU.Current acquisition processor
It further include the first power module, for being electric current using each section power supply in unit.
As shown in Fig. 4, voltage acquisition processor includes the voltage for voltage being sampled and being obtained voltage sample data
Sampling unit.Voltage sampling unit includes for detecting the voltage tester probe of voltage and voltage sense signal, by voltage
Detection signal convert in required voltage range and the voltage conditioning circuit of output voltage conversion signal, to voltage conversion signal into
The voltage control that row A/D converted and exported the voltage A/D conversion circuit of digital voltage signal, handled digital voltage signal
CPU, for make voltage control CPU realize markers overlaying function the second clock synchronization module, for store voltage control CPU processing after
Second data memory module of obtained voltage data.Voltage tester probe, voltage conditioning circuit, voltage A/D conversion circuit, electricity
Voltage-controlled CPU processed is sequentially connected, and the first clock synchronization module, the first data memory module are connected with voltage control CPU respectively, wherein electricity
Pressure A/D conversion circuit can be using the scheme being integrated in voltage control CPU.Voltage acquisition processor further includes second source mould
Block, for being voltage using each section power supply in unit.
The above-mentioned detachable loading tests device suitable for intelligent substation further includes and is used for current sample number
It is connected according to being handled with voltage sample data with obtaining electric current with the processor of the amplitude of voltage and phase relation, with processor
It connects and is used to be operated and be shown the amplitude of electric current and voltage and the human-computer interaction interface of phase relation.Processor and man-machine
Interactive interface is set in current acquisition processor or voltage acquisition processor, can also be further by processor and current control
CPU or voltage control CPU are integrated.In the present embodiment, processor and human-computer interaction interface are set at current acquisition
It manages in device, so that current acquisition processor be made to become host, voltage acquisition processor becomes slave, and processor and current control
CPU is integrated, therefore the current control CPU in the present embodiment has both and carries out processing function to digital current signal and to current sample
Data and voltage sample data are handled to obtain the function of the amplitude of electric current and voltage and phase relation.Human-computer interaction interface
Touch screen can be used.
Interface between current acquisition processor and voltage acquisition processor includes clock synchronization interface and data interactive interface, right
When interface can transmit clock synchronization data and for realizing the time adjustment function between the first clock synchronization module and the second clock synchronization module, data
Family's family interface is then used for transmission current data or voltage data and realizes the data between current control CPU and voltage control CPU
Transfer function.Clock synchronization interface, data interaction interface are all made of plug-in interface, such as USB formula interface.
It is above-mentioned to be used for suitable for the detachable loading tests device of intelligent substation to tested intelligent substation
Equipment carries out loading tests, and the course of work is as follows:
(1) current acquisition processor and voltage acquisition processor are switched on, and the two passes through electricity automatically into clock synchronization operating mode
Human-computer interaction interface in stream Acquisition Processor can check whether clock synchronization succeeds.Booting mouth is first set time, during clock synchronization,
Current acquisition processor sends clock synchronization signal as master clock, by clock synchronization interface, and voltage acquisition processor is used as from clock, connects
It receives clock synchronization signal and completes clock synchronization, start after clock synchronization success from punctual.
(2) voltage is measured using voltage acquisition processor, measurement result is shown in the people of current acquisition processor
On machine interactive interface, if measured value is normal, current acquisition processor and voltage acquisition processor can be separated, it is electric at this time
It presses Acquisition Processor to continue sampled voltage, and stores the data measured.
(3) current data is measured using current acquisition processor, after each current data is measured, clicks and determine,
And it is separate to input CT number.So circulation, until all DATA REASONINGs terminate.
(4) after current sample, the measurement of final voltage Acquisition Processor, and again by current acquisition processor and electricity
Pressure Acquisition Processor is combined, and is then carried out data transmission, the target when band that voltage acquisition processor can will measure at this time
Voltage data is transferred in current acquisition processor, by being compared with target current data when band, to obtain each phase
(display result is phase measurement in 200ms before the current phasor measurement terminates 5 periods to the amplitude and phase relation of electric current and voltage
As a result average value), and be shown on human-computer interaction interface, complete loading tests work.
The above-mentioned detachable loading tests device suitable for intelligent substation has the advantage that
1. the time is long when device is automorph, precision is high, can accomplish current acquisition processor and voltage acquisition processor running separately
Time keeping error is less than 0.1ms in 30min, i.e. the angle measurement error due to caused by time keeping error is less than 1.8 °, substantially lower than existing
The measurement error range that field allows, the punctual of 30min can complete loading tests work completely.
2. the shortcomings that wireless data transmission mode is overcome using interface (interference of the reliability by site application conditions,
Such as the influence of through walls, electromagnetic interference, synchronization signal intensity, and wireless signal is used as electromagnetic interference source, may be electric to live electric power
Sub- equipment causes a degree of interference, upper still with certain limitation in application), interference is not present to field device,
Not tested span from limitation.
Voltage is connect 3. overcoming traditional measurement mode and long cable being needed to draw, the long problem of heavy workload time of measuring.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of detachable loading tests device suitable for intelligent substation, for being set to tested in intelligent substation
It is standby to carry out loading tests, it is characterised in that: the detachable loading tests device suitable for intelligent substation includes:
Current acquisition processor, the current acquisition processor includes the electricity for electric current being sampled and being obtained current sampling data
Flow sampling unit；
Voltage acquisition processor, the voltage acquisition processor includes the electricity for voltage being sampled and being obtained voltage sample data
Press sampling unit；
The current acquisition processor and the voltage acquisition processor are separatedly installed, and the current acquisition processor and institute
State the interface for being provided between voltage acquisition processor and the two combination capable of being made to connect and carry out data transmission；
The detachable loading tests device suitable for intelligent substation further includes being set to the current acquisition processing
Be used to handle the current sampling data and the voltage sample data in device or the voltage acquisition processor with
Electric current and the processor of the amplitude of voltage and phase relation are obtained, is connected with the processor and is used to be operated and be shown
Show the amplitude of electric current and voltage and the human-computer interaction interface of phase relation.
2. the detachable loading tests device according to claim 1 suitable for intelligent substation, it is characterised in that:
The current sampling unit includes popping one's head in for detecting the current detecting of electric current and output electric current measure signal, examining the electric current
Signal is surveyed to convert in required current range and exporting the current regulating circuit of electric current conversion signal, to the electric current conversion signal
It carries out A/D conversion and export digital current signal electric current A/D conversion circuit, the electricity that is handled the digital current signal
Flow control CPU, for making the current control CPU realize the first clock synchronization module of markers overlaying function, for storing the electricity
First data memory module of the current data obtained after flow control CPU processing；
The voltage sampling unit includes for detecting the voltage tester probe of voltage and voltage sense signal, by the electricity
Pressure detection signal is converted to the voltage conditioning circuit of output voltage conversion signal, converting in required voltage range and to the voltage
Signal carries out A/D conversion and exports the voltage A/D conversion circuit of digital voltage signal, handles the digital voltage signal
Voltage control CPU, for making voltage control CPU realize the second clock synchronization module of markers overlaying function, for storing
State the second data memory module of the voltage data obtained after voltage control CPU processing.
3. the detachable loading tests device according to claim 2 suitable for intelligent substation, it is characterised in that:
The electric current A/D conversion circuit is integrated in the current control CPU, and the voltage A/D conversion circuit is integrated in the voltage
It controls in CPU.
4. the detachable loading tests device according to claim 2 suitable for intelligent substation, it is characterised in that:
The current acquisition processor further includes the first power module, and the voltage acquisition processor further includes second power supply module.
5. the detachable loading tests device according to claim 2 suitable for intelligent substation, it is characterised in that:
The processor is integrated with the current control CPU or voltage control CPU.
6. the detachable loading tests device according to claim 5 suitable for intelligent substation, it is characterised in that:
The interface include transmission clock synchronization data and for realizing pair between the first clock synchronization module and the second clock synchronization module
The clock synchronization interface of Shi Gongneng is used for transmission current data or voltage data and realizes the current control CPU and the voltage control
The data interaction interface of data-transformation facility between CPU processed.
7. the detachable loading tests device according to claim 6 suitable for intelligent substation, it is characterised in that:
The clock synchronization interface, the data interaction interface are all made of plug-in interface.
8. the detachable loading tests device according to claim 1 suitable for intelligent substation, it is characterised in that:
The processor and the human-computer interaction interface are set in the current acquisition processor and make the current acquisition processor
As host, the voltage acquisition processor becomes slave.
9. the detachable loading tests device according to claim 1 suitable for intelligent substation, it is characterised in that:
The human-computer interaction interface uses touch screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485702.6A CN110146762A (en) | 2019-06-05 | 2019-06-05 | A kind of detachable loading tests device suitable for intelligent substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485702.6A CN110146762A (en) | 2019-06-05 | 2019-06-05 | A kind of detachable loading tests device suitable for intelligent substation |
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| CN110146762A true CN110146762A (en) | 2019-08-20 |
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ID=67590301
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| CN201910485702.6A Pending CN110146762A (en) | 2019-06-05 | 2019-06-05 | A kind of detachable loading tests device suitable for intelligent substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112730962A (en) * | 2020-12-07 | 2021-04-30 | 云南电网有限责任公司昆明供电局 | Wireless multipoint current-voltage phase volt-ampere measuring meter of transformer substation |
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