CN107202947A - A kind of efficient thyristor valves component test system and method for testing - Google Patents
A kind of efficient thyristor valves component test system and method for testing Download PDFInfo
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- CN107202947A CN107202947A CN201710385197.9A CN201710385197A CN107202947A CN 107202947 A CN107202947 A CN 107202947A CN 201710385197 A CN201710385197 A CN 201710385197A CN 107202947 A CN107202947 A CN 107202947A
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- 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
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/263—Circuits therefor for testing thyristors
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Abstract
The invention discloses a kind of efficient thyristor valves component test system, including signal generating module, signal acquisition module, signal processing module, optical communication control module and thyristor converter valve module；Integrally apply the high pressure sinusoidal excitation of variable frequency to thyristor converter valve module by signal generating module, by the distributed Voltage measuring unit of many node current potentials, current measuring unit and impedance projectional technique, you can carry out routine test to thyristor converter valve module.Meanwhile, the invention also discloses converter valve thyristor level electric performance test method.The present invention can carry out testing impedance, short-circuit test and low pressure triggering to the converter valve components that any IGCT level is composed in series simultaneously and test, and substantially increase testing efficiency, shorten converter valve maintenance duration and delivery test cycle.
Description
Technical field
The present invention relates to D.C. high voltage transmission thyristor valves experimental technique field, and in particular to a kind of efficient crystalline substance
Brake tube converter valve components test system.
Background technology
Promotion of the high voltage dc transmission technology in technical fields such as power electronics, microelectronics, control theory and high pressure theories
Under developed rapidly, constantly to the appearance of Large Copacity, particularly high voltage trend development, high-pressure high-power thyristor, be
The transverter equipment of DC transmission engineering opens new approach.Converter valve is the nucleus equipment of HVDC transmission system, its
Performance directly affects the reliability and stability of whole system, and IGCT is by the advantage extensive use in pressure-resistant and through-current capability
In transverter equipment, by the way that the series connection of multiple Thyristors can obtain into desired system transmission voltage.Current HVDC
The transverter of power transmission engineering uses the converter valve of modularized design, i.e., one, is made up of some IGCT components, and a brilliant lock
Tube assembly includes multiple IGCTs level unit again.IGCT level unit is the minimum structural unit of converter valve, each IGCT level
IGCT, thyristor control unit are included again and press damping circuit.Thyristor control unit is the core of IGCT level unit
Element, it should possess the completion module from system circuit and take energy, and in addition to there is triggered as normal function to IGCT, also
Include protection trigger circuit, ensure IGCT in off-state and in reverse recovery by can correctly be touched during high-voltage pulse
The functions such as hair.
, it is necessary to each IGCT level unit of converter valve before DC transmission engineering puts into operation and during overhaul of the equipments
Detection experiment is carried out, to ensure that IGCT electric property meets design requirement, it is ensured that the reliability and equipment of DC transmission engineering
Safety.Existing measuring technology, produces about 300V or so work in the form of civil power inputs additional isolating transformer
Frequency sinusoidal voltage, puts on single-stage thyristor cell two ends and is tested, and testing impedance employs the side of similar bridge test
Method；On the one hand, the underintegration of this kind of test system, on the other hand, it is necessary to be surveyed successively to every one-level thyristor cell
Examination；By taking ultra-high voltage converter station as an example, a current conversion station includes nearly 3,000 thyristor cells, to complete complete overhaul need of work
Take a significant amount of time, had a strong impact on the progress of site examining and repairing experiment.
As Pulse Power Techniques are in the extensive use in each field of civilian industry, repetition rate nanosecond pulse power supply is proposed
It is different from the new demand of large-scale pulse power device, i.e. lightness, miniaturization, cheap, long-life and high reliability.Cause
This is, it is necessary to invent other highly efficient test systems to accelerate the progress of direct-current transmission converter valve site examining and repairing and experiment.
The content of the invention
Present invention aims at provide a kind of efficient thyristor valves component test system, the thyristor valves
Component test system can be tested multiple IGCT level units in converter valve components simultaneously, improved testing efficiency, dropped
Low work repetitive rate, solves existing test system and is merely able to test every one-level thyristor cell successively, efficiency is low
Under, operate it is extremely cumbersome the problem of.Meanwhile, additionally provide a kind of IGCT level impedance, short circuit, impedance detecting method.
The present invention is achieved through the following technical solutions：
A kind of efficient thyristor valves component test system, including signal generating module, signal acquisition module, letter
Number processing module, optical communication control module and thyristor converter valve module；
The signal generating module is used for the variable high pressure sinusoidal signal of output frequency, and is applied to by n IGCT level
The thyristor converter valve module two ends being composed in series；
The signal acquisition module is used under different frequency collect the voltage signal group of IGCT level, electricity in converter valve components
Signal is flowed, and by voltage signal group, current signal transfer to signal processing module, the voltage signal group is right under different frequency
The set of the peak voltage signal at each IGCT two ends answered, current signal is the thyristor converter that flows through under respective frequencies voltage
The peak-current signal of valve module；
The signal processing module is used to voltage signal group, current signal progress impedance op obtaining impedance results；Institute
State signal processing module and the connection of thyristor valves assembly communication, the signal processing module and signal generating module, signal
Acquisition module is to be electrically connected with；
The optical communication control module is used between both signal processing module and thyristor converter valve module carry out communication control
System connection.
Signal generating module includes signal generator and power amplifier, and the signal generator and power amplifier are electrical
Connection.
Signal acquisition module includes distributed Voltage measuring unit, current measuring unit and data collecting system；Described point
Cloth voltage measurement unit is the voltage divider being arranged between each IGCT level, for measuring each IGCT level two ends
Voltage, its input is connected with thyristor converter valve module, and output end is connected with data collecting system；Current measuring unit is used
The electric current of IGCT level is flowed through in measurement, its output end is connected with data collecting system.
Signal processing module includes central processor CPU.
Optical communication control module includes photoelectric communication interface and the optical fiber to communicate to connect, and photoelectric communication interface has AP
Interface and ST interfaces, optical fiber by the AP interfaces and ST interfaces of photoelectric communication interface to communicate to connect optical communication control module and
Thyristor converter valve module.Photoelectric communication interface can compatibility AP interfaces and the two kinds of optical fiber of ST interfaces.
Connected mode in thyristor converter valve module between the thyristor control unit of n IGCT level is：Upper level
The return optical fiber interface IP of thyristor control unit is connected with the triggering fiber interface FP of next stage thyristor control unit, and first
The triggering optical fiber interface FP of level thyristor control unit is connected with the triggering optical fiber of optical communication control module, n-th grade of IGCT control
The return optical fiber interface IP of unit processed is connected with the return optical fiber of optical communication control module；During test, optical communication control module is led to
Cross triggering fiber interface FP to turn on thyristor-controlled unit communication, optical communication control module obtains brilliant by returning optical fiber interface IP
Thyristor control unit communicates and feeds back to signal processing module.
A kind of method of testing of thyristor converter valve module, its testing impedance includes following steps：
(1) test signal is obtained：Under different frequency high pressure sinusoidal excitation, each IGCT in thyristor converter valve module is obtained
The voltage signal group at two ends, and the current signal group for flowing through thyristor converter valve module is obtained, the voltage signal group is difference
The set of the peak voltage signal at corresponding each IGCT two ends under frequency, current signal group is to flow through under respective frequencies voltage
The set of the peak-current signal of thyristor converter valve module；
(2) test signal is handled：With reference to the triggering fiber-optic signal that optical communication control module is exported and the return light collected
Optical fiber signaling, the voltage and current signal data group of collection is handled by signal processing module with following equation：
Upeak(fi)=Ipeak(fi)Z(fi)
In formula：UpeakFor crest voltage；IpeakFor peak point current；fiFor test frequency, i=1,2...n, simultaneous, which is calculated, is
The impedance value of IGCT can be measured, the impedance value measured and inferential impedance value judgement is compared, you can obtain IGCT and change
Flow the state of each IGCT of valve module.
Thyristor valves component test system can apply to the testing impedance of thyristor converter valve module, short-circuit test
Trigger and test with low pressure.
Short-circuit test predominantly detects whether IGCT in IGCT level unit occurs short circuit or open circuit.IGCT level unit is short
The AC power (being set by the high pressure sinusoidal excitation of changeable frequency) that drive test pilot production is 50Hz with frequency, applies crest voltage about
For 350V power-frequency voltage in IGCT level two ends, IGCT grade two ends are obtained by divider detection in parallel with IGCT level
Peak voltage signal, the peak voltage signal of acquisition is compared with the voltage threshold set, if above minimum voltage, experiment
Pass through.The electric current of IGCT is flowed through in detection simultaneously, discriminates whether to have exceeded the current threshold of setting, if being not above, explanation
There is open circuit situation, then the failure of an experiment.Divider herein is exactly one of measurement apparatus of distributed measurement unit, and divider is simultaneously
Connection is arranged on the two ends of IGCT level.
The main Trigger Function for checking IGCT level control unit of low pressure triggering test, it is ensured that IGCT can accurately respond tactile
Signal.IGCT level unit triggers test (passes through the height of changeable frequency using power frequency supply in main circuit as experiment power supply
Sinusoidal excitation is pressed to set), pilot system also includes the parts such as electronic switch, relay, voltage and current detection circuit.Triggering experiment
By the way of zero crossing is triggered；Electronic switch control triggering phase angle；Voltage and current detection circuit is located at electronic switch and relay
Between device, and it is connected with CPU.This experiment is by detecting that IGCT both end voltage carries out thyristor control unit Trigger Function survey
Examination, when IGCT is reliably triggered, its both end voltage drops to zero substantially.Power-frequency voltage, number are applied to IGCT level unit
Voluntarily power taking terminates thyristor control unit after individual power frequency period, and in normal operating conditions, IGCT is triggered.
The inventive concept of the present invention is：By the control unit of multiple IGCTs level by triggering optical fiber interface FP, return
Optical fiber interface IP is connected constitutes core test cell with signal processing module, and variable-frequency high pressure sinusoidal excitation is provided by outside,
Realize testing impedance, short-circuit test and low pressure triggering test.The present invention can enter to n IGCT level unit in valve module simultaneously
Row test, greatly improves testing efficiency, reduces work repetitive rate.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention can test the impedance behavior of n IGCT level in converter valve components simultaneously, improve testing efficiency,
Reduce test repetitive rate.
2nd, test system of the invention is easy and effective, and testing efficiency is the geometry level times of single IGCT level testing efficiency
Number, testing efficiency improves notable.
3rd, the present invention can also realize short-circuit test and the low pressure triggering test of n IGCT grade simultaneously, grading to IGCT
The comprehensive electric performance test of row.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the short-circuit test figure of the single thyristor cell of the present invention.
Fig. 3 is the triggering test chart of the single thyristor cell of the present 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 and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment 1
As shown in figure 1, a kind of efficient thyristor valves component test system, including signal generating module, signal
Acquisition module, signal processing module, optical communication control module and thyristor converter valve module；
The signal generating module is used for the variable high pressure sinusoidal signal of output frequency, and is applied to by n IGCT level
The thyristor converter valve module two ends being composed in series；
The signal acquisition module is used under different frequency collect the voltage signal group of IGCT level, electricity in converter valve components
Signal is flowed, and by voltage signal group, current signal transfer to signal processing module, the voltage signal group is right under different frequency
The set of the peak voltage signal at each IGCT two ends answered, current signal is the thyristor converter that flows through under respective frequencies voltage
The peak-current signal of valve module；
The signal processing module is used to voltage signal group, current signal progress impedance op obtaining impedance results；Institute
State signal processing module and the connection of thyristor valves assembly communication, the signal processing module and signal generating module, signal
Acquisition module is to be electrically connected with；
The optical communication control module is used between both signal processing module and thyristor converter valve module carry out communication control
System connection.
Signal generating module includes signal generator and power amplifier, and the signal generator and power amplifier are electrical
Connection.
Signal acquisition module includes distributed Voltage measuring unit, current measuring unit and data collecting system；Described point
Cloth voltage measurement unit is the voltage divider being arranged between each IGCT level, for measuring each IGCT level two ends
Voltage, its input is connected with thyristor converter valve module, and output end is connected with data collecting system；Current measuring unit is used
The electric current of IGCT level is flowed through in measurement, its output end is connected with data collecting system.
Signal processing module includes central processor CPU.
Optical communication control module includes photoelectric communication interface and the optical fiber to communicate to connect, and photoelectric communication interface has AP
Interface and ST interfaces, optical fiber by the AP interfaces and ST interfaces of photoelectric communication interface to communicate to connect optical communication control module and
Thyristor converter valve module.Photoelectric communication interface can compatibility AP interfaces and the two kinds of optical fiber of ST interfaces.
Connected mode in thyristor converter valve module between the thyristor control unit of n IGCT level is：Upper level
The return optical fiber interface IP of thyristor control unit is connected with the triggering fiber interface FP of next stage thyristor control unit, and first
The triggering optical fiber interface FP of level thyristor control unit is connected with the triggering optical fiber of optical communication control module, n-th grade of IGCT control
The return optical fiber interface IP of unit processed is connected with the return optical fiber of optical communication control module；During test, optical communication control module is led to
Cross triggering fiber interface FP to turn on thyristor-controlled unit communication, optical communication control module obtains brilliant by returning optical fiber interface IP
Thyristor control unit communicates and feeds back to signal processing module.
Embodiment 2
The impedance behavior test of thyristor converter valve module：
1st, the voltage and current signal of each IGCT level unit in thyristor converter valve module is obtained：With the height of changeable frequency
Pressure sinusoidal excitation is applied to the two ends of thyristor converter valve module, and each corresponding crystalline substance under each frequency is obtained at different frequencies
The crest voltage and peak point current of brake tube unit, can be using peak value electricity of the distributed Voltage measuring unit to each thyristor cell
Pressure is measured, and peak point current is measured using current measuring unit；
2nd, test data is handled：The voltage and current signal array of collection is handled with following equation by signal processing module：
Upeak(fi)=Ipeak(fi)Z(fi)
In formula：UpeakFor crest voltage；IpeakFor peak point current；fiFor test frequency, i=1,2...n, simultaneous, which is calculated, is
Impedance value can be measured, the impedance value measured and inferential impedance value judgement is compared, you can obtain thyristor converter valve module
In each IGCT level impedance state.
Embodiment 3
As shown in Fig. 2 short-circuit test predominantly detects whether IGCT in IGCT level unit occurs short circuit or open circuit.Brilliant lock
Pipe level unit short-circuit test uses frequency for 50Hz AC power (being set by the high pressure sinusoidal excitation of changeable frequency), applies
The power-frequency voltage that crest voltage is about 350V.IGCT two ends crest voltage is detected by divider, and with the voltage threshold of setting
Value is compared differentiation, and if above minimum voltage, experiment passes through.The electric current of IGCT is flowed through in detection simultaneously, discriminates whether
The current threshold of setting is exceeded, if being not above, has illustrated there is open circuit situation, then the failure of an experiment.Divider herein is exactly
One of measurement apparatus of distributed measurement unit, divider is arranged in parallel at the two ends of each IGCT level.
Embodiment 4
As shown in figure 3, the main Trigger Function for checking IGCT level control unit of low pressure triggering test, it is ensured that IGCT can
Accurate response trigger signal.IGCT level unit triggers test (passes through frequency using power frequency supply in main circuit as experiment power supply
The variable high pressure sinusoidal excitation of rate is set), pilot system also includes the portions such as electronic switch, relay, voltage and current detection circuit
Point.Triggering experiment is by the way of zero crossing triggering；Electronic switch control triggering phase angle；Voltage and current detection circuit is located at electronics
Between switch and relay, and it is connected with CPU.This experiment is touched by detecting that IGCT both end voltage carries out thyristor control unit
Functional test is sent out, when IGCT is reliably triggered, its both end voltage drops to zero substantially.Power frequency is applied to IGCT level unit
Voluntarily power taking terminates thyristor control unit after voltage, several power frequency periods, and in normal operating conditions, IGCT is triggered.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
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 be included
Within protection scope of the present invention.
Claims (8)
1. a kind of efficient thyristor valves component test system, it is characterised in that adopted including signal generating module, signal
Collect module, signal processing module, optical communication control module and thyristor converter valve module；
The signal generating module is used for the variable high pressure sinusoidal signal of output frequency, and is applied to by n IGCT level series connection
The thyristor converter valve module two ends of composition；
The signal acquisition module is used under different frequency collect the voltage signal group of IGCT level in converter valve components, electric current letter
Number, and by voltage signal group, current signal transfer to signal processing module, the voltage signal group is corresponding under different frequency
The set of the peak voltage signal at each IGCT two ends, current signal is the thyristor converter valve group that flows through under respective frequencies voltage
The peak-current signal of part；
The signal processing module is used to voltage signal group, current signal progress impedance op obtaining impedance results；The letter
Number processing module and the connection of thyristor valves assembly communication, the signal processing module and signal generating module, signal acquisition
Module is to be electrically connected with；
The optical communication control module is used between both signal processing module and thyristor converter valve module carry out Control on Communication company
Connect.
2. thyristor valves component test system according to claim 1, it is characterised in that signal generating module includes
Signal generator and power amplifier, the signal generator and power amplifier are electrically connected with.
3. thyristor valves component test system according to claim 1, it is characterised in that signal acquisition module includes
Distributed Voltage measuring unit, current measuring unit and data collecting system；The distributed Voltage measuring unit is to be arranged on
Voltage divider between each IGCT level, the voltage for measuring each IGCT level two ends, its input and IGCT
Converter valve components are connected, and output end is connected with data collecting system；Current measuring unit is used to measure the electricity for flowing through IGCT level
Stream, its output end is connected with data collecting system.
4. thyristor valves component test system according to claim 1, it is characterised in that signal processing module includes
Central processor CPU.
5. thyristor valves component test system according to claim 1, it is characterised in that optical communication control module bag
Photoelectric communication interface and the optical fiber to communicate to connect are included, photoelectric communication interface has AP interfaces and ST interfaces, and optical fiber passes through light
The AP interface and ST interfaces of electric communication interface are to communicate to connect optical communication control module and thyristor converter valve module.
6. thyristor valves component test system according to claim 1, it is characterised in that thyristor converter valve module
Connected mode between the thyristor control unit of middle n IGCT level is：The return optical fiber of upper level thyristor control unit
Interface IP is connected with the triggering fiber interface FP of next stage thyristor control unit, the triggering light of first order thyristor control unit
Fine interface FP is connected with the triggering optical fiber of optical communication control module, the return optical fiber interface IP of n-th grade of thyristor control unit with
The return optical fiber of optical communication control module is connected；During test, optical communication control module is by triggering fiber interface FP and thyristor-controlled
Unit communication processed conducting, optical communication control module obtains thyristor control unit by returning optical fiber interface IP and communicates and feed back to
Signal processing module.
7. a kind of method of testing of thyristor converter valve module, it is characterised in that testing impedance includes following steps：
(1) test signal is obtained：Under different frequency high pressure sinusoidal excitation, each IGCT two ends in thyristor converter valve module are obtained
Voltage signal group, and obtain and flow through the current signal group of thyristor converter valve module, the voltage signal group is different frequency
Under corresponding each IGCT two ends peak voltage signal set, current signal group is the brilliant lock that flows through under respective frequencies voltage
The set of the peak-current signal of pipe converter valve components；
(2) test signal is handled：With reference to the triggering fiber-optic signal that optical communication control module is exported and the return optical fiber letter collected
Number, the voltage and current signal data group of collection is handled with following equation by signal processing module：
Upeak(fi)=Ipeak(fi)Z(fi)
In formula：UpeakFor crest voltage；IpeakFor peak point current；fiFor test frequency, i=1,2...n, simultaneous is calculated and can surveyed
The impedance value of IGCT is obtained, the impedance value measured and inferential impedance value judgement is compared, you can obtain thyristor valves
The state of each IGCT of component.
Changed 8. a kind of thyristor valves component test system as described in claim any one of 1-6 can apply to IGCT
Flow testing impedance, short-circuit test and low pressure the triggering test of valve module.
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| CN109298325A (en) * | 2018-09-30 | 2019-02-01 | 南京南瑞继保电气有限公司 | A kind of power electronic devices test device |
| CN109358597A (en) * | 2018-10-12 | 2019-02-19 | 南京南瑞继保电气有限公司 | Thyristor control unit protectiveness triggers the equivalent test device of low pressure and control method |
| CN109507487A (en) * | 2018-11-21 | 2019-03-22 | 华自科技股份有限公司 | Thyristor triggering impulse signal deteching circuit |
| CN109900980A (en) * | 2019-01-25 | 2019-06-18 | 国网四川省电力公司电力科学研究院 | A kind of converter valve test macro and its method based on high-voltage square-wave pulse excitation |
| CN109917264A (en) * | 2019-03-29 | 2019-06-21 | 国网上海市电力公司 | A kind of converter valve thyristor level short-circuit test device and method |
| CN110907787A (en) * | 2018-09-17 | 2020-03-24 | 国网浙江省电力公司 | IGCT drive circuit high-temperature characteristic batch detection device and method |
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| CN113358994A (en) * | 2021-05-18 | 2021-09-07 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Thyristor test device and method |
| CN113514749A (en) * | 2021-07-07 | 2021-10-19 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Thyristor voltage-sharing detection device and detection method |
| CN113671332A (en) * | 2020-04-30 | 2021-11-19 | 南京南瑞继保电气有限公司 | Modular thyristor valve function testing device and testing method |
| CN115389899A (en) * | 2022-09-13 | 2022-11-25 | 国网四川省电力公司电力科学研究院 | Online monitoring method for electrical state parameters of thyristor-level key components of converter valve |
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