CN113777460A - MMC flexible direct-current conversion IGBT health state monitoring system and method - Google Patents
MMC flexible direct-current conversion IGBT health state monitoring system and method Download PDFInfo
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- CN113777460A CN113777460A CN202110929942.8A CN202110929942A CN113777460A CN 113777460 A CN113777460 A CN 113777460A CN 202110929942 A CN202110929942 A CN 202110929942A CN 113777460 A CN113777460 A CN 113777460A
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Abstract
The invention relates to a MMC flexible direct-current conversion IGBT health state monitoring system and a method thereof, wherein each IGBT is provided with a driver, each driver receives a control instruction, controls the on-off state of the corresponding IGBT, monitors the voltage at two ends of the IGBT and the current flowing through the IGBT, and transmits the voltage and the current to a sub-module controller in a functional module; recording the IGBT on-state voltage drop and corresponding current, turn-off voltage and corresponding current, peak voltage and corresponding current, and calculating the equivalent on-state resistance and turn-off resistance of the IGBT; taking the IGBT equivalent on-state resistance, the IGBT turn-off resistance, the turn-off voltage and current, the IGBT current and the corresponding junction temperature as monitoring uploading data, and uploading the monitoring uploading data to the control module through the sub-module controller; and an expert diagnosis model is built in the control module, and the health state of the IGBT is judged for each IGBT based on the monitoring upload data and the corresponding instruction. The invention realizes accurate acquisition of the health state and the instruction execution condition of the MMC flexible direct-conversion IGBT, and can estimate the health state of the IGBT in advance to process the IGBT.
Description
Technical Field
The invention relates to the technical field of high-voltage direct-current transmission, in particular to a MMC flexible direct-current conversion IGBT health state monitoring system and method.
Background
In the operation process of the MMC-based flexible direct-current transmission project, each bridge arm is usually formed by connecting hundreds of sub-modules in series. And each sub-module comprises a plurality of IGBTs, the number of IGBTs of the MMC converter valve is very large. At present, the valve control can only know that the IGBT fails when the IGBT is completely damaged in the soft and straight engineering, or the IGBT is taken down and independently tested to judge the health state of the IGBT, and the soft and straight engineering can not diagnose the health state of the IGBT in advance. How to diagnose the health state of the IGBT by an online method is necessary for the operation of flexible and straight engineering.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a MMC flexible direct-conversion IGBT health state monitoring system and a method, which realize the monitoring and state estimation of the MMC flexible direct-conversion IGBT health state.
In order to achieve the purpose, the invention provides an MMC flexible direct-conversion IGBT health state monitoring system, which comprises a plurality of sub-module controllers, a plurality of drivers and a control module;
each driver controls the on-off state of one IGBT, monitors the voltage at two ends of the IGBT and the current flowing through the IGBT, records the on-state voltage drop and the corresponding current of the IGBT, the off-state voltage and the corresponding current, the peak voltage and the corresponding current, and calculates the equivalent on-state resistance and the off-state resistance of the IGBT; taking the IGBT equivalent on-state resistance, the IGBT turn-off resistance, the turn-off voltage and the corresponding current, the IGBT current and the corresponding junction temperature as monitoring uploading data, and uploading the monitoring uploading data to the control module through a sub-module controller;
each sub-module controller receives the instruction sent by the instruction control module and forwards the instruction to the corresponding driver to control the on-off state of the IGBT;
the control module issues a switching-on or switching-off instruction of each IGBT; and an expert diagnosis model is built in, and the expert diagnosis model judges the health state of the IGBT based on the monitoring upload data and the corresponding instruction for each IGBT.
Further, the expert diagnostic model inputs are: the method comprises the steps of instructing, enabling equivalent on-state resistors of the IGBTs corresponding to different currents, enabling equivalent off-state resistors of the IGBTs corresponding to different voltages, peak voltages, currents corresponding to the peak voltages, IGBT currents and corresponding junction temperatures; the output is: normal, faulty, or sub-healthy.
Further, sub-health is an estimate that the IGBT is defective and will fail during continued operation.
Further, the expert diagnostic model is obtained for training, and comprises:
extracting equivalent on-state resistance of the IGBT corresponding to different currents, equivalent off-state resistance of the IGBT corresponding to different voltages, current and junction temperature corresponding to the current of the IGBT, current corresponding to the off-state voltage and corresponding instructions from historical collected data of the IGBT during working and data obtained under the condition of fault injection, and adding state labels to be normal, fault or sub-health to form a database.
On the other hand, the MMC flexible direct-conversion IGBT health state monitoring method comprises the following steps:
each IGBT is provided with a driver, each driver receives a control instruction, controls the on-off state of the corresponding IGBT, monitors the voltage at two ends of the IGBT and the current flowing through the IGBT, and transmits the voltage and the current to a sub-module controller in the functional module; recording the IGBT on-state voltage drop and corresponding current, turn-off voltage and corresponding current, peak voltage and corresponding current, and calculating the equivalent on-state resistance and turn-off resistance of the IGBT; uploading the IGBT equivalent on-state resistance corresponding to different currents, the IGBT equivalent turn-off resistance corresponding to different voltages, the IGBT current, the junction temperature corresponding to the IGBT current, the turn-off voltage and the current as monitoring uploading data to a control module through a sub-module controller;
and an expert diagnosis model is built in the control module, and the health state of the IGBT is judged for each IGBT based on the monitoring upload data and the corresponding instruction.
Further, the judging method comprises the following steps:
the control module issues a conduction instruction, the voltage at two ends of the IGBT is 0, current flows through the IGBT, and the output is normal; otherwise, the IGBT output is in failure.
If the equivalent on-state resistance of the IGBT corresponding to different currents is larger than 10% of the initial value under the same current, outputting an IGBT alarm; if the threshold value of the control module for injection in advance is exceeded, outputting an IGBT fault;
if the equivalent turn-off resistance of the IGBT corresponding to different voltages is smaller than 10% of the initial value under the same voltage condition, outputting an IGBT alarm; if the threshold value of the control module for injection in advance is exceeded, outputting an IGBT fault;
if the turn-off voltage and the corresponding current are under the same turn-off voltage condition, the IGBT turn-off current is larger than the threshold value of the set value, and then an IGBT alarm is output;
under the same IGBT current, the corresponding junction temperature is greater than the input threshold value or greater than 10% of the initial threshold value, and an IGBT alarm is output; and if the maximum junction temperature of the IGBT is greater than the input maximum junction temperature threshold value, outputting the IGBT fault.
Further, the output IGBT alarms that the IGBT works in an abnormal state but still works, and the IGBT can break down after continuous work.
Further, comprising:
extracting IGBT equivalent on-state resistance, IGBT turn-off resistance, peak voltage, current corresponding to the peak voltage, turn-off voltage, IGBT current, junction temperature corresponding to the IGBT current, current corresponding to the turn-off voltage and corresponding instructions from historical data acquired during the operation of the IGBT and data acquired under the condition of fault injection, and forming a database according to data continuously accumulated by the control module.
The technical scheme of the invention has the following beneficial technical effects:
the control module and the method for monitoring the health state of the MMC flexible direct conversion IGBT realize the monitoring of the health state of the MMC flexible direct conversion IGBT, accurately acquire the health state and the instruction execution condition of the MMC flexible direct conversion IGBT and can estimate the health state of the IGBT in advance to process the IGBT.
Drawings
FIG. 1 is a schematic diagram of MMC flexible direct conversion IGBT health status monitoring;
FIG. 2 is a schematic diagram of a half-bridge submodule of an MMC flexible direct-current transmission converter valve;
FIG. 3 is a schematic diagram of a full-bridge submodule of an MMC flexible direct-current power transmission converter valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the MMC soft-direct-conversion IGBT health status monitoring schematic. The IGBT health state monitoring of the flexible direct current converter valve is composed of a control module, a sub-module controller and a plurality of IGBT drivers.
As can be seen from fig. 1, each IGBT is provided with a driver, and the IGBT driver can detect the voltage across the IGBT and the current flowing through the IGBT, while the IGBT driver needs to execute a valve-controlled instruction to turn on and off the IGBT. Based on the voltage and the current of the two ends of the IGBT when the IGBT driver is switched on, the voltage and the current of the two ends of the IGBT when the IGBT driver is switched off, and the peak voltage and the peak current of the IGBT when the IGBT driver is switched off can be recorded. Calculating the equivalent on-state resistance Rce (0n) of the IGBT according to the voltage and the current at two ends of the IGBT when the IGBT is switched on; and calculating the equivalent turn-off resistance Rce (0ff) of the IGBT according to the voltage and the current at two ends of the IGBT when the IGBT is turned off.
The IGBT driver uploads an IGBT equivalent on-state resistance Rce (0n), corresponding current, an IGBT equivalent off-state resistance Rce (0ff), corresponding off-state voltage, IGBT current, corresponding junction temperature, peak voltage delta Vce, voltage Vce and current Ice to the control module through the sub-module controller.
And a sub-module controller is arranged in the functional module of each device, and is used for receiving the uploading data of each IGBT driver in the functional module and uploading the uploading data to the control module.
The control module issues a switching-on or switching-off instruction of each IGBT; and an expert diagnosis model is built in, and the expert diagnosis model judges the health state of the IGBT based on the monitoring upload data and the corresponding instruction for each IGBT.
The IGBT health state monitoring system carries out on-line monitoring to each IGBT in the system, and comprises:
the control module issues a conduction instruction, the voltage at two ends of the IGBT is 0, current flows through the IGBT, and the output is normal; otherwise, the IGBT output is in failure.
If the equivalent on-state resistance of the IGBT corresponding to different currents is larger than 10% of the initial value under the same current, outputting an IGBT alarm; if the threshold value of the control module for injection in advance is exceeded, outputting an IGBT fault;
if the equivalent turn-off resistance of the IGBT corresponding to different voltages is smaller than 10% of the initial value under the same voltage condition, outputting an IGBT alarm; if the threshold value of the control module for injection in advance is exceeded, outputting an IGBT fault;
if the turn-off voltage and the corresponding current are under the same turn-off voltage condition, the IGBT turn-off current is larger than the threshold value of the set value, and then an IGBT alarm is output;
under the same IGBT current, the corresponding junction temperature is greater than the input threshold value or greater than 10% of the initial threshold value, and an IGBT alarm is output; and if the maximum junction temperature of the IGBT is greater than the input maximum junction temperature threshold value, outputting the IGBT fault. In the above embodiment, the state information in the operating process of the IGBT can be obtained, and the state information is forwarded to the control module through the sub-module controller, and the health state of the IGBT is diagnosed by the valve control expert diagnostic system. The specific working process is as follows:
(1) each IGBT is provided with a driver, each driver receives a control instruction, controls the on-off state of the corresponding IGBT, monitors the voltage at two ends of the IGBT and the current flowing through the IGBT, and transmits the voltage and the current to a sub-module controller in the functional module; recording the IGBT on-state voltage drop and corresponding current, turn-off voltage and corresponding current, peak voltage and corresponding current, and calculating the equivalent on-state resistance and turn-off resistance of the IGBT; and taking the IGBT equivalent on-state resistance Rce (0n), the corresponding current, off-state resistance Rce (0ff), the corresponding off-state voltage, the IGBT current, the corresponding junction temperature, peak voltage delta Vce, voltage Vce and current Ice as monitoring uploading data and uploading the monitoring uploading data to the control module through the sub-module controller.
In one embodiment, the IGBT driver monitors the voltage Vce at two ends of the IGBT and the current Ice flowing through the IGBT in real time; the IGBT driver respectively records the on-state voltage drop Vcesat, the turn-off voltage Vce and the peak voltage delta Uce of the IGBT according to the instruction sent by the control module and the voltage relation at two ends of the IGBT; the IGBT driver calculates the equivalent on-state resistance Rce (0n) of the IGBT according to the on-state voltage drop Vcesat of the IGBT and the current at the corresponding moment; the IGBT driver calculates an IGBT turn-off resistance Rce (0ff) according to the IGBT turn-off voltage Vce and the current at the corresponding moment; the IGBT driver uploads an IGBT equivalent on-state resistance Rce (0n), an off-state resistance Rce (0ff), a peak voltage delta Uce, a corresponding current Ice, an off-state voltage Vce and a corresponding current Ice to the control module.
(2) And an expert diagnosis model is built in the control module, and the health state of the IGBT is judged for each IGBT based on the monitoring upload data and the corresponding instruction.
The IGBT health state on-line monitoring is realized, the IGBT does not need to be disassembled for testing, and the IGBT health state is pre-estimated in advance and is processed.
Certainly, sub-modules corresponding to the MMC soft-direct conversion IGBT health state monitoring system and method of the present invention are not limited to the half-bridge sub-module shown in fig. 2, but also include the full-bridge sub-module shown in fig. 3, and other various rectifier modules and corresponding deformation structures in the prior art.
In summary, the present invention relates to a system and a method for monitoring the health status of an MMC flexible direct-current conversion IGBT, wherein each IGBT is provided with a driver, and each driver receives a control instruction, controls the on-off status of the corresponding IGBT, monitors the voltage at the two ends of the IGBT and the current flowing through the IGBT, and transmits the voltage and the current to a sub-module controller in the functional module; recording the IGBT on-state voltage drop and corresponding current, turn-off voltage and corresponding current, peak voltage and corresponding current, and calculating the equivalent on-state resistance and turn-off resistance of the IGBT; taking the IGBT equivalent on-state resistance, the IGBT turn-off resistance, the peak voltage and current, and the turn-off voltage and current as monitoring uploading data, and uploading the monitoring uploading data to the control module through the sub-module controller; and an expert diagnosis model is built in the control module, and the health state of the IGBT is judged for each IGBT based on the monitoring upload data and the corresponding instruction. The invention realizes accurate acquisition of the health state and the instruction execution condition of the MMC flexible direct-conversion IGBT, and can estimate the health state of the IGBT in advance to process the IGBT.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. A MMC flexible direct-conversion IGBT health status monitoring system is characterized by comprising a plurality of sub-module controllers, a plurality of drivers and a control module;
each driver controls the on-off state of one IGBT, monitors the voltage at two ends of the IGBT and the current flowing through the IGBT, records the on-state voltage drop and the corresponding current of the IGBT, the off-state voltage and the corresponding current, the peak voltage and the corresponding current, and calculates the equivalent on-state resistance and the off-state resistance of the IGBT; taking the IGBT equivalent on-state resistance, the IGBT turn-off resistance, the turn-off voltage and the corresponding current, the IGBT current and the corresponding junction temperature as monitoring uploading data, and uploading the monitoring uploading data to the control module through a sub-module controller;
each sub-module controller receives the instruction sent by the instruction control module and forwards the instruction to the corresponding driver to control the on-off state of the IGBT;
the control module issues a switching-on or switching-off instruction of each IGBT; and an expert diagnosis model is built in, and the expert diagnosis model judges the health state of the IGBT based on the monitoring upload data and the corresponding instruction for each IGBT.
2. The control module for monitoring the health of an MMC flexible direct current converting IGBT according to claim 1, wherein the expert diagnostic model inputs are: the method comprises the steps of instructing, enabling equivalent on-state resistors of the IGBTs corresponding to different currents, enabling equivalent off-state resistors of the IGBTs corresponding to different voltages, peak voltages, currents corresponding to the peak voltages, IGBT currents and corresponding junction temperatures; the output is: normal, faulty, or sub-healthy.
3. The control module for monitoring the health state of the MMC flexible direct conversion IGBT according to claim 2, wherein sub-health is to predict that the IGBT has a defect, and the IGBT alarm is output when the IGBT will fail in continuous operation.
4. The control module for monitoring the health status of an MMC flexible direct conversion IGBT according to claim 2, wherein the expert diagnostic model is obtained for training and comprises:
extracting equivalent on-state resistance of the IGBT corresponding to different currents, equivalent off-state resistance of the IGBT corresponding to different voltages, current and junction temperature corresponding to the current of the IGBT, current corresponding to the off-state voltage and corresponding instructions from historical collected data of the IGBT during working and data obtained under the condition of fault injection, and adding state labels to be normal, fault or sub-health to form a database.
5. A MMC flexible direct current conversion IGBT health state monitoring method is characterized by comprising the following steps:
each IGBT is provided with a driver, each driver receives a control instruction, controls the on-off state of the corresponding IGBT, monitors the voltage at two ends of the IGBT and the current flowing through the IGBT, and transmits the voltage and the current to a sub-module controller in the functional module; recording the IGBT on-state voltage drop and corresponding current, turn-off voltage and corresponding current, peak voltage and corresponding current, and calculating the equivalent on-state resistance and turn-off resistance of the IGBT; uploading the IGBT equivalent on-state resistance corresponding to different currents, the IGBT equivalent turn-off resistance corresponding to different voltages, the IGBT current, the junction temperature corresponding to the IGBT current, the turn-off voltage and the current as monitoring uploading data to a control module through a sub-module controller;
and an expert diagnosis model is built in the control module, and the health state of the IGBT is judged for each IGBT based on the monitoring upload data and the corresponding instruction.
6. The valve control method for monitoring the health state of the MMC flexible direct conversion IGBT according to claim 5, characterized in that the judging method is as follows:
the control module issues a conduction instruction, the voltage at two ends of the IGBT is 0, current flows through the IGBT, and the output is normal; otherwise, the IGBT output fails;
if the equivalent on-state resistance of the IGBT corresponding to different currents is larger than 10% of the initial value under the same current, outputting an IGBT alarm; if the threshold value of the control module for injection in advance is exceeded, outputting an IGBT fault;
if the equivalent turn-off resistance of the IGBT corresponding to different voltages is smaller than 10% of the initial value under the same voltage condition, outputting an IGBT alarm; if the threshold value of the control module for injection in advance is exceeded, outputting an IGBT fault;
if the turn-off voltage and the corresponding current are under the same turn-off voltage condition, the IGBT turn-off current is larger than the threshold value of the set value, and then an IGBT alarm is output;
under the same IGBT current, the corresponding junction temperature is greater than the input threshold value or greater than 10% of the initial threshold value, and an IGBT alarm is output; and if the maximum junction temperature of the IGBT is greater than the input maximum junction temperature threshold value, outputting the IGBT fault.
7. The valve control method for monitoring the health state of the MMC flexible direct conversion IGBT according to claim 6, wherein the IGBT is output to alarm that the IGBT is in an abnormal state, but still can work, and the IGBT can fail after being continuously operated.
8. The valve control method for monitoring the health state of the MMC flexible direct conversion IGBT according to claim 6, wherein the expert diagnostic model is obtained for training and comprises:
extracting IGBT equivalent on-state resistance, IGBT turn-off resistance, peak voltage, current corresponding to the peak voltage, turn-off voltage, IGBT current, junction temperature corresponding to the IGBT current, current corresponding to the turn-off voltage and corresponding instructions from historical data acquired during the operation of the IGBT and data acquired under the condition of fault injection, and forming a database according to data continuously accumulated by the control module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114489002A (en) * | 2021-12-31 | 2022-05-13 | 上海科梁信息科技股份有限公司 | Flexible and straight fault simulation system based on FPGA |
| CN114489002B (en) * | 2021-12-31 | 2024-05-03 | 上海科梁信息科技股份有限公司 | Flexible-straight fault simulation system based on FPGA |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130612A (en) * | 2010-12-20 | 2011-07-20 | 中国电力科学研究院 | Integrated control sub-module board for simulating multi-level modular converter (MMC) sub-module |
| WO2017071365A1 (en) * | 2015-10-27 | 2017-05-04 | 全球能源互联网研究院 | Digitally driven igbt current detection system and detection method therefor |
| CN110133468A (en) * | 2019-05-30 | 2019-08-16 | 西南交通大学 | A kind of strong zygonema aging monitoring and assessing method of the IGBT based on multivariable |
| CN110502777A (en) * | 2019-07-03 | 2019-11-26 | 国网江苏省电力有限公司南京供电分公司 | IGBT module condition detecting system and method based on neural network prediction |
| CN111211703A (en) * | 2020-01-08 | 2020-05-29 | 福州大学 | Synchronous online monitoring method for key elements of MMC sub-module of flexible direct current power transmission system |
| CN111830389A (en) * | 2020-07-31 | 2020-10-27 | 徐州中矿大传动与自动化有限公司 | IGBT junction temperature estimation system and method based on emitter power terminal temperature |
| US10979041B1 (en) * | 2020-03-13 | 2021-04-13 | Hamilton Sunstrand Corporation | Method for monitoring gate drive signals for power module aging effects |
-
2021
- 2021-08-13 CN CN202110929942.8A patent/CN113777460A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130612A (en) * | 2010-12-20 | 2011-07-20 | 中国电力科学研究院 | Integrated control sub-module board for simulating multi-level modular converter (MMC) sub-module |
| WO2017071365A1 (en) * | 2015-10-27 | 2017-05-04 | 全球能源互联网研究院 | Digitally driven igbt current detection system and detection method therefor |
| CN110133468A (en) * | 2019-05-30 | 2019-08-16 | 西南交通大学 | A kind of strong zygonema aging monitoring and assessing method of the IGBT based on multivariable |
| CN110502777A (en) * | 2019-07-03 | 2019-11-26 | 国网江苏省电力有限公司南京供电分公司 | IGBT module condition detecting system and method based on neural network prediction |
| CN111211703A (en) * | 2020-01-08 | 2020-05-29 | 福州大学 | Synchronous online monitoring method for key elements of MMC sub-module of flexible direct current power transmission system |
| US10979041B1 (en) * | 2020-03-13 | 2021-04-13 | Hamilton Sunstrand Corporation | Method for monitoring gate drive signals for power module aging effects |
| CN111830389A (en) * | 2020-07-31 | 2020-10-27 | 徐州中矿大传动与自动化有限公司 | IGBT junction temperature estimation system and method based on emitter power terminal temperature |
Non-Patent Citations (1)
| Title |
|---|
| 周刚;: "基于卡尔曼滤波算法的MMC子模块IGBT在线监测方法", 福州大学学报(自然科学版), no. 02 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114489002A (en) * | 2021-12-31 | 2022-05-13 | 上海科梁信息科技股份有限公司 | Flexible and straight fault simulation system based on FPGA |
| CN114489002B (en) * | 2021-12-31 | 2024-05-03 | 上海科梁信息科技股份有限公司 | Flexible-straight fault simulation system based on FPGA |
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