CN101924353B - Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method - Google Patents
Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method Download PDFInfo
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- CN101924353B CN101924353B CN2010102798978A CN201010279897A CN101924353B CN 101924353 B CN101924353 B CN 101924353B CN 2010102798978 A CN2010102798978 A CN 2010102798978A CN 201010279897 A CN201010279897 A CN 201010279897A CN 101924353 B CN101924353 B CN 101924353B
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Abstract
The invention relates to an overcurrent electronic protection module for a high-voltage integrated gate commutated thyristor (IGCT) and a short-circuit current protection method, in particular to an electric electronic module for protecting an IGCT apparatus in a voltage source medium-voltage high-power frequency converter. The overcurrent electronic protection module for the high-voltage ICGT comprises a fixing bracket, wherein electronic components, namely, a high-voltage high-power switch module, an overcurrent detection module, a high-frequency overvoltage sampling module, a light driving module and a power supply module are arranged on the fixing bracket. The short-circuit current protection method for the overcurrent electronic protection module for the high-voltage ICGT comprises the following steps of: starting; and operating a high-power switch tube, the high-frequency overvoltage sampling module, the light driving module and the like according to a procedure. The protection module has the advantages of wide protection range, high response speed, reliable breaking, small size, light weight, convenient installation and maintenance and the like.
Description
Technical field
The present invention relates to a kind of high pressure IGCT overcurrent electronic protection module and short-circuit current protection method, specifically is a kind of electric power electronic module of pressing IGCT device in the big-power transducer in the voltage-source type of protecting, and belongs to the power electric component technical field.
Background technology
For the converter plant of control motor in the middle pressure high-power speed-adjusting system, high-power IGCT is expected to obtain using comparatively widely.Yet IGCT self does not possess protective capability for the short circuit overcurrent, but when the transient fault electric current surpasses the maximum cut-off current, IGCT can't turn-off.Therefore, adopting one of technical difficulty that IGCT exists as the high-power frequency conversion device of main power device is the short-circuit protection of IGCT.Method to IGCT short circuit overcurrent protection in the converter plant mainly contains at present:
1) installing fast acting fuse protection; Fast acting fuse is as frequency converter a kind of short-circuit protection device commonly used; Have advantage simple in structure, inverse time protection, yet, for this comparatively special power device of IGCT; The limited use of fast acting fuse is in the power grade of frequency converter, and existing fast acting fuse product all can not satisfy the protection of IGCT short circuit overcurrent in the high-power frequency conversion device on the market;
ABB AB's proposition of 2) producing IGCT utilizes the relatively large electric current ability to bear of IGCT self, when short circuit takes place, opens whole IGCT devices in the frequency converter major loop simultaneously, shares the method for short circuit current.This guard method, its control method is complicated, realizes difficulty, and the prerequisite of protection is after short circuit current is shared, and within the scope that single IGCT allows, in case short circuit current is excessive, does not only have protective effect, and fault is enlarged.
Summary of the invention
The objective of the invention is to; Overcome the shortcoming of existing IGCT short circuit overcurrent protection method; A kind of high pressure IGCT overcurrent electronic protection module and short-circuit current protection method are provided; It is the new electric power electronic module that is applicable to IGCT device short circuit overcurrent protection in the voltage-source type big-power transducer, the purpose of realize that protection range is wide, response speed fast, reliable breaking, volume are little, in light weight, being convenient to installation and maintenance.
The technical scheme of a kind of high pressure IGCT overcurrent electronic protection module of the present invention is: it comprises a high voltage switch module that is fixed on the support; Be fixed on the overcurrent detection module on the support; Be fixed on the high frequency overvoltage sampling module on the support; Rack-mount optical drive module; Rack-mount power module.
Further technical scheme is on the basis of technique scheme:
Described high pressure IGCT overcurrent electronic protection module, its high voltage switch module, it comprises water-cooled panel radiator, high-power switch tube, buffer resistance, high frequency absorption electric capacity, low sense power busbar, high power switch tube drive circuit.
Described high pressure IGCT overcurrent electronic protection module, its high-power switch tube, buffer resistance are installed in the board-like spreader surface of water-cooled; High-power switch tube, buffer resistance are connected through low sense power busbar with high frequency absorption electric capacity.
Described high pressure IGCT overcurrent electronic protection module, its overcurrent detection module, it comprises current Hall transducer, overcurrent logic detection circuit, this overcurrent logic detection circuit is installed on the current Hall transducer; Described high frequency overvoltage sampling module, it comprises water-cooled tap inductance, high frequency overvoltage detection circuit, this high frequency overvoltage detection circuit is installed on the water-cooled tap inductance.
Described high pressure IGCT overcurrent electronic protection module; The signal input part of its optical drive module is connected with the signal output part of overcurrent logic detection circuit and high frequency overvoltage detection circuit through optical fiber, and the signal output part of optical drive module is connected with exterior I GCT device through optical fiber.
Described high pressure IGCT overcurrent electronic protection module; The input of its power module is connected with the power frequency AC of outside 220V with cable; Output+15V, 0V connect with the power end of power model drive circuit; Output+24V, 0V ,-24V connects with the power end of cable with the overcurrent detection module, and output+24V, 0V connect with the power end of cable with optical drive module and high frequency overvoltage detection circuit.
The short-circuit current protection method of high pressure IGCT overcurrent electronic protection module according to the invention the steps include:
1) after the startup, the high power switch tube drive circuit makes high-power switch tube be in conducting state always;
2) when the high frequency overvoltage occurring on the water-cooled tap inductance of high frequency overvoltage sampling module; Then the high frequency overvoltage detection circuit high frequency overvoltage is sampled and with the high frequency overvoltage detection circuit on the threshold values set relatively; Surpass threshold values; Then high frequency overvoltage detection circuit signal output part is to optical drive module output driving command, and the optical drive module is to outside IGCT device output standard-sized sheet messenger; Simultaneously, the high frequency overvoltage detection circuit divides power-off signal to outside circuit breaker output;
3) the optical drive module is behind outside IGCT device output standard-sized sheet messenger; The electric current that flows through the high voltage switch module causes high power switch tube drive circuit protection action; Turn-off high-power switch tube; The electric current of overcurrent logic detection circuit convection current overcurrent Hall element is sampled, and with overcurrent logic detection circuit on the threshold values set relatively, be lower than threshold values; Then overcurrent logic detection circuit signal output is to optical drive module output driving command, and the optical drive module is to outside IGCT device output complete shut-down break signal.
Compare with prior art, remarkable technique effect of the present invention is:
1, enlarged the scope of IGCT type big-power transducer short circuit overcurrent protection;
2, shortened short circuit overcurrent protection action response time;
3, disjunction is safe and reliable;
4, compact conformation, volume weight is little, is convenient to installation and maintenance.
Description of drawings
Fig. 1 is that high pressure IGCT overcurrent electronic protection module master looks sketch map;
Fig. 2 is the left view of Fig. 1 electronic protection module;
Fig. 3 is the vertical view of Fig. 1 electronic protection module;
Fig. 4 is the circuit theory diagrams of Fig. 1 electronic protection module.
Each Reference numeral name is called among the figure: 1-high-power module; 1.1-water-cooled panel radiator; 1.2-high-power switch tube; 1.3-buffer resistance; 1.4-high frequency absorption electric capacity; 1.5-low sense power busbar; 1.6-high power switch tube drive circuit; 2-overcurrent detection module; 2.1-current Hall transducer; 2.2-overcurrent logic detection circuit; 3-high frequency overvoltage sampling module; 3.1-water-cooled tap inductance; 3.2-high frequency overvoltage detection circuit; 4-optical drive module; 5-power module; 6-support.
Embodiment
Like Fig. 1,2,3, shown in 4, a kind of high pressure IGCT overcurrent electronic protection module, it has a high voltage switch module 1 that is fixed on the support 6; Be fixed on the overcurrent detection module 2 on the support 6; Be fixed on the high frequency overvoltage sampling module 3 on the support 6; Be installed in the optical drive module 4 on the support 6; Be installed in the power module 5 on the support 6.Described high voltage switch module 1, it comprises water-cooled panel radiator 1.1, high-power switch tube 1.2, buffer resistance 1.3, high frequency absorption electric capacity 1.4, low sense power busbar 1.5, high power switch tube drive circuit 1.6.High-power switch tube 1.2, buffer resistance 1.3 are installed in water-cooled panel radiator 1.1 surfaces; High-power switch tube 1.2, buffer resistance 1.3 are connected through low sense power busbar 1.5 with high frequency absorption electric capacity 1.4.Overcurrent detection module 2, it comprises current Hall transducer 2.1, overcurrent logic detection circuit 2.2, this overcurrent logic detection circuit 2.2 is installed on the current Hall transducer 2.1; Described high frequency overvoltage sampling module 3, it comprises water-cooled tap inductance 3.1, high frequency overvoltage detection circuit 3.2, this high frequency overvoltage detection circuit 3.2 is installed on the water-cooled tap inductance 3.1.The signal input part of optical drive module 4 is connected with the signal output part of overcurrent logic detection circuit 2.2 and high frequency overvoltage detection circuit 3.2 through optical fiber, and the signal output part of optical drive module 4 is connected with exterior I GCT device through optical fiber.The input of power module 5 is connected with the power frequency AC of outside 220V with cable; Output+15V, 0V connect with the power end of power model drive circuit 1.6; Output+24V, 0V ,-24V connects with the power end of cable with overcurrent detection module 2, and output+24V, 0V connect with the power end of cable with optical drive module 4 and high frequency overvoltage detection circuit 3.2.
The short-circuit current protection method of the above-mentioned high pressure IGCT of a kind of usefulness of the present invention overcurrent electronic protection module, its step is:
1) after the startup, high power switch tube drive circuit 1.6 makes high-power switch tube 1.2 be in conducting state always;
2) when the high frequency overvoltage occurring on the water-cooled tap inductance 3.1 of high frequency overvoltage sampling module 3; Then 3.2 pairs of high frequency overvoltage of high frequency overvoltage detection circuit sample and with high frequency overvoltage detection circuit 3.2 on the threshold values set relatively; Surpass threshold values; Then high frequency overvoltage detection circuit 3.2 signal output parts are to optical drive module 4 output driving command, and optical drive module 4 is to outside IGCT device output standard-sized sheet messenger; Simultaneously, high frequency overvoltage detection circuit 3.2 divides power-off signal to outside circuit breaker output;
3) optical drive module 4 is behind outside IGCT device output standard-sized sheet messenger; The electric current that flows through high voltage switch module 1 causes the 1.6 protection actions of high power switch tube drive circuit; Turn-off high-power switch tube 1.2; The electric current of overcurrent logic detection circuit 2.2 convection current overcurrent Hall elements 2.1 is sampled, and with overcurrent logic detection circuit 2.2 on the threshold values set relatively, be lower than threshold values; Then overcurrent logic detection circuit 2.2 signal output parts are to optical drive module 4 output driving command, and optical drive module 4 is to outside IGCT device output complete shut-down break signal.
In conjunction with accompanying drawing, operation principle of the present invention, technical parameter and good effect are described further as follows:
High pressure IGCT overcurrent electronic protection module of the present invention, series connection inserts the direct current branch of IGCT type frequency converter, and high-power switch tube 1.2 is in normal opening state during work.When frequency converter is short-circuited overcurrent fault, will produce the high frequency overvoltage that causes by short circuit current on the water-cooled tap inductance 3.1.High frequency overvoltage detection circuit 3.2 records the high frequency overvoltage signal; And will record the action threshold values that signal sets on the high frequency overvoltage detection circuit 3.2 therewith and compare, surpass and set threshold values, then this high frequency overvoltage detection circuit 3.2 produces a light signal; This light signal is delivered to optical drive module 4 through optical fiber; The optical drive module 4 that receives this light signal is sent the logical optical drive signal of standard-sized sheet, delivers to the IGCT device in the frequency converter through optical fiber, makes all IGCT conductings.Simultaneously, high frequency overvoltage detection circuit 3.2 output one signal of telecommunication to frequency converter main control circuits, control of conversion device and supply network break off.Quick increase along with frequency converter direct current branch electric current; Excess current protective function on the high power switch tube drive circuit 1.6 begins action; High-power switch tube 1.2 is turn-offed, and simultaneously, high frequency absorption electric capacity 1.4 absorbs the shutoff overvoltage that high-power switch tube 1.2 produces with buffer resistance 1.3.In the turn off process of high-power switch tube 1.2; The electric current that flows through current Hall transducer 2.1 reduces gradually; Overcurrent logic detection circuit 2.2 records overcurrent signal, and will record the action threshold values that signal sets on the overcurrent logic detection circuit 2.2 therewith and compare, and is lower than the setting threshold values; Then this overcurrent logic detection circuit 2.2 produces a light signal, and this light signal is delivered to optical drive module 4 through optical fiber.The optical drive module 4 that receives this light signal is sent the disconnected optical drive signal of complete shut-down, delivers to the IGCT device in the frequency converter through optical fiber, and all IGCT are turn-offed, and realizes the short circuit overcurrent protection.
High pressure IGCT overcurrent electronic protection module of the present invention, its volume is 500*325*400mm
3, weight 43kg.But according to the action threshold values of parameter tuning high frequency overvoltage detection circuits such as the rated voltage of IGCT device in the frequency converter, maximum cut-off current 3.2, to confirm the operating current of high pressure IGCT overcurrent electronic protection module with overcurrent logic detection circuit 2.2.
Claim protection range of the present invention is not limited to the foregoing description.
Claims (3)
1. a high pressure IGCT overcurrent electronic protection module is characterized in that, it comprises a high voltage switch module (1) that is fixed on the support (6); Be fixed on the overcurrent detection module (2) on the support (6); Be fixed on the high frequency overvoltage sampling module (3) on the support (6); Be installed in the optical drive module (4) on the support (6); Be installed in the power module (5) on the support (6); Described high voltage switch module (1), it comprises water-cooled panel radiator (1.1), high-power switch tube (1.2), buffer resistance (1.3), high frequency absorption electric capacity (1.4), low sense power busbar (1.5), high power switch tube drive circuit (1.6); High-power switch tube (1.2), buffer resistance (1.3) are installed in water-cooled panel radiator (1.1) surface; High-power switch tube (1.2), buffer resistance (1.3) are connected through low sense power busbar (1.5) with high frequency absorption electric capacity (1.4); Described overcurrent detection module (2), it comprises current Hall transducer (2.1), overcurrent logic detection circuit (2.2), this overcurrent logic detection circuit (2.2) is installed on the current Hall transducer (2.1); Described high frequency overvoltage sampling module (3), it comprises water-cooled tap inductance (3.1), high frequency overvoltage detection circuit (3.2), this high frequency overvoltage detection circuit (3.2) is installed on the water-cooled tap inductance (3.1); The signal input part of described optical drive module (4) is connected with the signal output part of overcurrent logic detection circuit (2.2) and high frequency overvoltage detection circuit (3.2) through optical fiber, and the signal output part of optical drive module (4) is connected with exterior I GCT device through optical fiber.
2. high pressure IGCT overcurrent electronic protection module according to claim 1; It is characterized in that; The input of said power module (5) is connected with the power frequency AC of outside 220V with cable; Output+15V, 0V connect with the power end of high power switch tube drive circuit (1.6); Output+24V, 0V ,-24V connects with the power end of cable with overcurrent detection module (2), and output+24V, 0V connect with the power end of cable with optical drive module (4) and high frequency overvoltage detection circuit (3.2).
3. short-circuit current protection method with the said high pressure IGCT of claim 1 overcurrent electronic protection module is characterized in that its step comprises:
1) after the startup, high power switch tube drive circuit (1.6) makes high-power switch tube (1.2) be in conducting state always;
2) when the high frequency overvoltage occurring on the water-cooled tap inductance (3.1) of high frequency overvoltage sampling module (3); Then high frequency overvoltage detection circuit (3.2) is sampled to the high frequency overvoltage and is gone up preset threshold relatively with high frequency overvoltage detection circuit (3.2); Surpass threshold value; Then high frequency overvoltage detection circuit (3.2) signal output part is to optical drive module (4) output driving command, and optical drive module (4) is to outside IGCT device output standard-sized sheet messenger; Simultaneously, high frequency overvoltage detection circuit (3.2) divides power-off signal to outside circuit breaker output;
3) optical drive module (4) is behind outside IGCT device output standard-sized sheet messenger; The electric current that flows through high voltage switch module (1) causes high power switch tube drive circuit (1.6) protection action; Turn-off high-power switch tube (1.2); The electric current of overcurrent logic detection circuit (2.2) convection current overcurrent Hall element (2.1) is sampled, and goes up preset threshold relatively with overcurrent logic detection circuit (2.2), is lower than threshold value; Then overcurrent logic detection circuit (2.2) signal output part is to optical drive module (4) output driving command, and optical drive module (4) is to outside IGCT device output complete shut-down break signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102798978A CN101924353B (en) | 2010-09-14 | 2010-09-14 | Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102798978A CN101924353B (en) | 2010-09-14 | 2010-09-14 | Overcurrent electronic protection module for high-voltage integrated gate commutated thyristor (IGCT) and short-circuit current protection method |
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| CN101924353A CN101924353A (en) | 2010-12-22 |
| CN101924353B true CN101924353B (en) | 2012-08-08 |
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| CN103929045B (en) * | 2013-01-16 | 2019-06-07 | 通用电气能源电能变换科技有限公司 | Convertor device, driving unit and correlation technique |
| CN108267677B (en) * | 2016-12-29 | 2020-09-04 | 中车株洲电力机车研究所有限公司 | IGCT anode current detection device and method based on Rogowski coil |
| CN114039334B (en) * | 2021-11-05 | 2023-12-08 | 上海杰瑞兆新信息科技有限公司 | Converter output short-circuit protection circuit and method without output current sampling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464631A (en) * | 2002-06-28 | 2003-12-31 | 河南电力试验研究所 | Five-level high-voltage frequency converter |
| CN1538607A (en) * | 2003-02-28 | 2004-10-20 | Abb��ʿ����˾ | Converter circuit with short-circuit lurrent protections |
| CN101210941A (en) * | 2006-12-30 | 2008-07-02 | 许继集团有限公司 | Large power converter subsequent lockout overcurrent, subsequent power loss and overcurrent test method |
| CN201130231Y (en) * | 2007-11-30 | 2008-10-08 | 上海市电力公司超高压输变电公司 | Experimental device for high power silicon controlled as well as power electronic device |
| CN201877810U (en) * | 2010-09-14 | 2011-06-22 | 中国船舶重工集团公司第七一二研究所 | High-voltage integrated gate-commutated thyristor (IGCT) overcurrent electronic protective module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001057782A (en) * | 1999-08-11 | 2001-02-27 | Yaskawa Electric Corp | Power converter |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464631A (en) * | 2002-06-28 | 2003-12-31 | 河南电力试验研究所 | Five-level high-voltage frequency converter |
| CN1538607A (en) * | 2003-02-28 | 2004-10-20 | Abb��ʿ����˾ | Converter circuit with short-circuit lurrent protections |
| CN101210941A (en) * | 2006-12-30 | 2008-07-02 | 许继集团有限公司 | Large power converter subsequent lockout overcurrent, subsequent power loss and overcurrent test method |
| CN201130231Y (en) * | 2007-11-30 | 2008-10-08 | 上海市电力公司超高压输变电公司 | Experimental device for high power silicon controlled as well as power electronic device |
| CN201877810U (en) * | 2010-09-14 | 2011-06-22 | 中国船舶重工集团公司第七一二研究所 | High-voltage integrated gate-commutated thyristor (IGCT) overcurrent electronic protective module |
Non-Patent Citations (1)
| Title |
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| JP特开2001-57782A 2001.02.27 |
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Effective date of registration: 20151009 Address after: 430064, Wuhan City, Hubei province Hongshan District Lion Hill Street South Lake (steam School Village) Patentee after: Wuhan Changhai electric propulsion and chemical power supply Co., Ltd. Address before: 430064 Hubei City, Hongshan District, lion street, steam school, a village Patentee before: No.712 Inst., China Ship Heavy Industry Group Co. |