CN110850210A - Direct current transmission converter valve base electronic device and system - Google Patents
Direct current transmission converter valve base electronic device and system Download PDFInfo
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- CN110850210A CN110850210A CN201911128343.5A CN201911128343A CN110850210A CN 110850210 A CN110850210 A CN 110850210A CN 201911128343 A CN201911128343 A CN 201911128343A CN 110850210 A CN110850210 A CN 110850210A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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Abstract
The invention discloses a valve base electronic device and a system of a direct-current transmission converter valve, wherein the device comprises: the thyristor triggering monitoring board comprises at least one triggering monitoring board, at least one main control board and at least one thyristor triggering monitoring board card; trigger monitoring board includes: at least one optical fiber transceiving interface; the optical fiber transceiving interface is connected with the thyristor trigger monitoring board card and is used for bidirectional communication with the thyristor trigger monitoring board card and information transmission; the thyristor triggering monitoring board card is used for detecting resistance and/or capacitance parameter information of a thyristor level of a circuit to be detected, turn-off angle information of the thyristor level of the circuit to be detected and commutation failure state information; the main control board is used for recording and transmitting information. By implementing the method and the device, the occurrence of commutation failure can be prevented by acquiring the parameter information of the circuit element, and the overhauling capacity of the converter valve is improved.
Description
Technical Field
The invention relates to the technical field of extra-high voltage direct current transmission, in particular to a valve base electronic device and system of a direct current transmission converter valve.
Background
The converter valve base electronic equipment (VBE for short) is first-stage monitoring equipment of the converter valve, and is responsible for receiving an instruction of a pole control system, completing unlocking/locking and triggering of the converter valve, receiving states and data returned by all thyristor-level trigger monitoring units of the converter valve, and feeding the states of the converter valve back to the pole control system.
In the existing related high-voltage direct-current transmission technical field, the functions of the converter valve base electronic device based on thyristor commutation can only be used for obtaining the instruction of a converter station control protection system, the detected contents only aim at the change of the unlocking/locking and triggering states of the converter valve, the actual communication requirements of the converter valve in the high-voltage direct-current transmission process can only be met, the detection and prediction requirements of circuit elements inside the converter valve can not be met, the state overhauling capability of the converter valve is poor, when the converter valve has commutation failure, early warning and maintenance are difficult to timely carry out, and the transmission quality is seriously influenced.
Disclosure of Invention
Therefore, the invention aims to overcome the defects that the detection and prediction requirements of internal circuit elements of a converter valve cannot be met and the state overhauling capability of the converter valve is poor in the existing direct-current power transmission converter valve base electronic technology, so that the direct-current power transmission converter valve base electronic device and the direct-current power transmission converter valve base electronic system are provided.
According to a first aspect, an embodiment of the present invention discloses a dc power transmission converter valve base electronic device, including: the thyristor triggering monitoring board comprises at least one triggering monitoring board, at least one main control board and at least one thyristor triggering monitoring board card; the trigger monitoring board includes: at least one optical fiber transceiving interface; the thyristor trigger monitoring board card is used for detecting resistance and/or capacitance parameter information of a thyristor level of a circuit to be detected, turn-off angle information of the thyristor level of the circuit to be detected and commutation failure state information; the optical fiber transceiving interface is connected with the thyristor trigger monitoring board card and is used for bidirectionally communicating with the thyristor trigger monitoring board card and transmitting the parameter information of the resistance and/or capacitance of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be tested and the commutation failure state information; the main control board is used for recording and transmitting the resistance and/or capacitance parameter information of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be tested and the commutation failure state information of the thyristor triggering and monitoring board of the converter valve.
With reference to the first aspect, in a first implementation manner of the first aspect, at least one power board is used for supplying power to the dc power transmission converter valve base electronic device.
With reference to the first embodiment of the first aspect, in a second embodiment of the first aspect, the power board is connected to the trigger monitoring board, and the trigger monitoring board is connected to the main control board.
With reference to the first aspect, in a third implementation manner of the first aspect, the main control board is further configured to be connected to an external digital wave recording instrument, an upper computer of the dc transmission converter valve base electronic device, and the converter station control protection system through an optical fiber for communication.
With reference to the third implementation manner of the first aspect, in the fourth implementation manner of the first aspect, the main control board is further configured to transmit the resistance and/or capacitance parameter information of the thyristor level and the commutation failure state information to the upper computer, and transmit the resistance and/or capacitance parameter information of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be tested, and the commutation failure state information to the converter station control protection system.
With reference to the fourth implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the main control board is further configured to: recording the state information of the valve base electronic device of the direct-current transmission converter valve, and transmitting the state information to a converter station control protection system; the state information comprises fault information of a power panel, loss information of the thyristor trigger monitoring board card and communication abnormity/disconnection information of the optical fiber.
With reference to the first aspect, in a sixth implementation manner of the first aspect, the number of the trigger monitoring boards ranges from 1 to 10, and the number of the main control boards ranges from 1 to 2.
With reference to the first embodiment of the first aspect, in a seventh embodiment of the first aspect, the number of the power supply boards is in a range of 1 to 2.
According to a second aspect, an embodiment of the present invention discloses a valve base electronic system for a dc power transmission converter valve, including: at least one trigger monitoring cabinet, wherein at least one direct current transmission converter valve base electronic device as described in any one of the embodiments of the first aspect is arranged in the trigger monitoring cabinet.
The technical scheme of the invention has the following advantages:
the invention provides a valve base electronic device and a system of a direct-current transmission converter valve, wherein the device comprises: at least one trigger monitoring board and at least one main control board; trigger the monitoring board and include: the thyristor triggering monitoring board card comprises at least one thyristor triggering monitoring board card and at least one optical fiber transceiving interface; the device detects the resistance and/or capacitance parameter information of the thyristor level of the circuit to be detected, the turn-off angle information of the thyristor level of the circuit to be detected and commutation failure state information through the thyristor trigger monitoring board card; the optical fiber transceiving interface is connected with the thyristor trigger monitoring board card and is used for transmitting thyristor-level resistance and/or capacitance parameter information, thyristor-level turn-off angle information and commutation failure state information of a circuit to be tested; the main control board is used for recording and transmitting resistance and/or capacitance parameter information of the thyristor level, turn-off angle information of the thyristor level of the circuit to be tested and commutation failure state information detected by the thyristor trigger monitoring board of the converter valve. The method can meet the requirements of detection and prediction of the thyristor level and the circuit element of the converter valve according to the monitored parameter information of the circuit element and the information of all thyristor levels of the converter valve, improves the overhauling capacity of the converter valve, can timely perform early warning and maintenance when the converter valve has phase conversion failure, and improves the transmission quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a block diagram showing a specific example of a valve-based electronic device for a dc power transmission converter valve according to embodiment 1 of the present invention;
fig. 2 is a block diagram showing a specific example of a trigger monitoring plate in the valve-based electronic device for the dc power transmission converter valve according to embodiment 1 of the present invention;
fig. 3 is a schematic block diagram of a connection relationship of thyristor trigger monitoring boards of a converter valve in a dc power transmission converter valve base electronic device in embodiment 1 of the present invention;
fig. 4 is a block diagram showing another specific example of the valve-based electronic device of the dc power transmission converter valve according to embodiment 1 of the present invention;
fig. 5 is a schematic block diagram of a specific example of a connection relationship between main control boards in a valve base electronic device of a direct-current transmission converter valve according to embodiment 1 of the present invention;
fig. 6 is a block diagram of a specific example of a trigger monitoring enclosure in embodiment 1 of the present invention;
fig. 7 is a block diagram showing a specific example of a valve-based electronic system of a dc power transmission converter valve in embodiment 2 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment of the present invention provides a valve base electronic device for a dc power transmission converter valve, which is applied to a specific application scenario of real-time monitoring of a converter valve in a high-voltage dc power transmission project, and as shown in fig. 1, the valve base electronic device for a dc power transmission converter valve in the embodiment includes:
trigger monitoring board 01, main control board 02, thyristor trigger monitoring integrated circuit board 03, wherein, trigger monitoring board 01 and main control board 02 are connected, trigger monitoring board 01 and thyristor trigger monitoring integrated circuit board 03 and be connected.
Specifically, as shown in fig. 2, the trigger monitoring board 01 includes: the system comprises at least one optical fiber transceiving interface (SFP), wherein the optical fiber transceiving interface is connected with a thyristor trigger Monitoring board 03 (TTM) and is used for bidirectionally communicating with the thyristor trigger Monitoring board 03 and transmitting resistance and/or capacitance parameter information of a thyristor level, turn-off angle information of the thyristor level of a tested circuit and commutation failure state information; specifically, the trigger monitoring board 01 in this embodiment has at least one optical fiber transceiving interface, and performs bidirectional communication with the thyristor trigger monitoring board 03 disposed outside the trigger monitoring board 01 through an optical fiber transmission mode, for example, the TTM may transmit the detected information to the trigger monitoring board 01 through the optical fiber transceiving interface, and the trigger monitoring board 01 may also transmit the information obtained by the trigger monitoring board 01 itself to the TTM through the optical fiber transceiving interface.
The triggering monitoring board 01 has a plurality of optical fiber transceiving interfaces, and although we only mention at least one optical fiber transceiving interface, the triggering monitoring board 01 may have at most twelve pairs of optical fiber transceiving interfaces for being respectively connected with twelve TTMs for performing bidirectional communication, and the specific number may be adjusted according to the need, which is not limited by the present invention.
The trigger monitoring board 01 can monitor the parameter information of the circuit element to be tested through the TTM. In addition, the communication state information of the TTM may also be monitored, and specifically, the communication state information may be forward energy-taking reporting state information, current interruption triggering reporting state information, single pulse reporting state information, forward overvoltage protection reporting state information, reverse recovery protection reporting state information, commutation failure reporting state information, first resistance state information, second resistance state information, third resistance state information, first capacitance state information, second capacitance state information, and third capacitance state information.
A Thyristor Trigger Monitoring board 03 (TTM), as shown in fig. 3, is configured to detect parameter information of a resistor and/or a capacitor in a circuit to be tested including a Thyristor, turn-off angle information of a Thyristor stage of the circuit to be tested, and commutation failure state information; in this embodiment, the resistance and/or capacitance parameter information in the circuit under test may include: the first capacitance parameter, the second capacitance parameter, the third capacitance parameter, the first resistance parameter, the second resistance parameter, the third resistance parameter, and the fourth resistance parameter.
Specifically, the circuit elements in the circuit under test include: the circuit comprises a thyristor level TTM, a first capacitor Cd1, a second capacitor Cd2, a third capacitor Cd3, a first resistor Rd1, a second resistor Rd2, a third resistor Rd3 and a fourth resistor R4. For example, the circuit element may be connected in a manner that the TTM is provided with a plurality of interfaces, the first interface is connected to the first end of the first resistor Rd1, the second interface is connected to the first end of the thyristor and the first end of the fourth resistor R4, the third interface is connected to the first end of the second resistor Rd2, the fourth interface is connected to the first end of the third resistor Rd3 and the second end of the fourth resistor R4, the fifth interface is connected to the second end of the thyristor, the first end of the first capacitor Cd1 is connected to the second end of the first resistor Rd1, the first end of the second capacitor Cd2 is connected to the second end of the second resistor Rd2, the first end of the third capacitor Cd3 is connected to the second end of the first capacitor Cd1 and the second end of the second capacitor Cd2, and the second end of the third capacitor Cd3 is connected to the third end of the thyristor and the second end of the third resistor Rd 3.
And the main control board 02 is used for recording and transmitting the resistance and/or capacitance parameter information of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be detected and the commutation failure state information, which are detected by the thyristor trigger monitoring board 01 of the converter valve. In this embodiment, the main control board 02 is connected to the trigger monitoring board 01, and receives the parameter information and the status information detected by the trigger monitoring board 01 through the TTM. Specifically, as shown in fig. 5, the main control board 02 may also be connected to an external digital wave recorder through an ethernet, record state information of phase commutation failure transmitted by the TTM through the trigger monitoring board 01, and if phase commutation failure occurs, record information of the thyristor circuit detected by the TTM before and after the occurrence of the phase commutation failure in real time, and control data information of a converter station control protection system during monitoring;
however, since the amount of data information to be recorded by the recording device in the dc transmission converter valve system is large, in order to prevent transmission congestion, it is preferable that the main Control board 02 is further connected to an upper computer (SCADA) of the above-mentioned dc transmission converter valve base electronic device through a Process Field Bus (PROFIBUS), specifically, the PROFIBUS is an international and open Field Bus standard independent of the device manufacturer, and is also a Field Bus technology for factory automation inter-vehicle level monitoring and Field device layer data communication and Control. The main control board 02 transmits an SOE message to the SCADA through the PROFIBUS, and the transmitted SOE message content includes resistance and/or capacitance parameter information in a tested circuit of the thyristor, turn-off angle information of a thyristor level of the tested circuit, commutation failure state information, and message content recorded by transmitting traditional valve-based electronic equipment.
The main control board 02 is further configured to record state information of the valve-based electronic device of the direct-current transmission converter valve, and transmit the state information to a converter station control protection system; the state information includes fault information of the power board 04, loss information of the thyristor trigger monitoring board 03, and communication abnormality/disconnection information of the optical fiber.
As shown in fig. 4, the valve-based electronic device for a direct-current power transmission converter valve according to an embodiment of the present invention further includes:
the power panel 04 is used for supplying power to the valve base electronic device of the direct-current transmission converter valve; in this embodiment, the power board 04 is connected to the trigger monitoring board 01, the trigger monitoring board 01 is connected to the main control board 02, and the power board 04 supplies power to the dc power transmission converter valve base electronic device.
In this embodiment, as shown in fig. 6, the number of trigger monitoring plates 01 ranges from 1 to 10, according to the different number of thyristor levels in the monitored converter valve, different number of trigger monitoring boards 01 can be selected, specifically, the number range of the optical fiber transceiving interfaces of each trigger monitoring board 01 is 1-12, each optical fiber transceiving interface can trigger and monitor a corresponding thyristor level, according to the different number of thyristor levels in the monitored converter valve, different numbers of optical fiber transceiving interfaces can be called on each trigger monitoring board 01, further, different numbers of trigger monitoring plates 01 can be selected to monitor the thyristor level in the converter valve, for example, the system estimates and monitors 120 thyristor levels, and at this time, 10 trigger monitor boards 01 are selected, and all the optical fiber transceiving interfaces on the trigger monitoring board 01 are called to monitor and complete the trigger instruction.
For the same reason, the number of the main control boards 02 ranges from 1 to 2; the number of power strips 04 ranges from 1 to 2.
According to the valve base electronic device of the direct-current transmission converter valve, the trigger monitoring board 01, the main control board 02, the thyristor trigger monitoring board 03 and the power board 04 are connected, resistance and/or capacitance parameter information in a tested circuit including a thyristor, turn-off angle information of a thyristor level of the tested circuit and commutation failure state information are recorded and transmitted, and detection and prediction requirements of circuit elements in the converter valve can be met through detected information of the thyristor and the circuit elements in the circuit, so that the state overhauling capacity of the converter valve is improved, therefore, when the converter valve has commutation failure, early warning and maintenance can be timely carried out, and transmission quality is improved.
Example 2
An embodiment of the present invention provides a valve base electronic system for a dc power transmission converter valve, which is applied to a specific application scenario of real-time monitoring of a converter valve in a high-voltage dc power transmission project, where a valve base electronic system 71 for a dc power transmission converter valve in this embodiment, as shown in fig. 7, includes:
a first trigger monitor chassis 711, a second trigger monitor chassis 712;
at least one direct current transmission converter valve base electronic device in any one of the embodiments is arranged in the trigger monitoring case. In particular, depending on the monitoring of different kinds of converter valves, a different number of trigger monitoring boxes may be used, for example, when monitoring a 12-pulse converter, 6 trigger monitoring boxes are needed due to the 12 converter valves in the converter, and in this case, the above trigger monitoring boxes are as shown in fig. 6.
The valve base electronic system of the direct-current transmission converter valve provided by the embodiment of the invention forms a high-level monitoring device of the converter valve by connecting different numbers of trigger monitoring cases, not only can receive instruction information issued by a converter station control protection system, but also can record and transmit resistance and/or capacitance parameter information in a tested circuit comprising a thyristor, turn-off angle information of the thyristor level of the tested circuit and commutation failure state information by connecting a power supply board 04, a trigger monitoring board 01, a main control board 02 and a thyristor trigger monitoring board 03, has the functions of monitoring the turn-off angle and predicting the commutation failure by detecting information of the thyristor and circuit elements in the circuit, has no monitoring capability of elements such as a resistor, a capacitor and the like of the converter valve, and further realizes the defense capability of the occurrence of the commutation failure, the state maintenance capacity of the converter valve is improved, and the transmission quality is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A direct current transmission converter valve base electronic device is characterized by comprising: the thyristor triggering monitoring board comprises at least one triggering monitoring board, at least one main control board and at least one thyristor triggering monitoring board card;
the trigger monitoring board includes: at least one optical fiber transceiving interface;
the thyristor trigger monitoring board card is used for detecting resistance and/or capacitance parameter information of a thyristor level of a circuit to be detected, turn-off angle information of the thyristor level of the circuit to be detected and commutation failure state information;
the optical fiber transceiving interface is connected with the thyristor trigger monitoring board card and is used for bidirectionally communicating with the thyristor trigger monitoring board card and transmitting the parameter information of the resistance and/or capacitance of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be tested and the commutation failure state information;
the main control board is used for recording and transmitting the resistance and/or capacitance parameter information of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be tested and the commutation failure state information of the thyristor triggering and monitoring board of the converter valve.
2. The dc power transmission converter valve base electronic device of claim 1, wherein:
and the power panel is used for supplying power to the direct-current transmission converter valve base electronic device.
3. The dc power transmission converter valve base electronic device of claim 2, wherein:
the power panel is connected with the trigger monitoring panel, and the trigger monitoring panel is connected with the main control panel.
4. The DC power transmission converter valve base electronic device according to claim 1,
the main control board is also used for being connected with external digital wave recording instrument equipment, an upper computer of the direct current transmission converter valve base electronic device and the converter station control protection system through optical fibers for communication.
5. The valve-based electronic device of the direct-current transmission converter valve according to claim 4, wherein the main control board is further configured to transmit resistance and/or capacitance parameter information of the thyristor level and the commutation failure state information to the upper computer, and transmit resistance and/or capacitance parameter information of the thyristor level, the turn-off angle information of the thyristor level of the circuit to be tested, and the commutation failure state information to the converter station control protection system.
6. The dc power transmission converter valve base electronic device of claim 5, wherein the main control board is further configured to:
recording the state information of the valve base electronic device of the direct-current transmission converter valve, and transmitting the state information to a converter station control protection system;
the state information comprises fault information of a power panel, loss information of the thyristor trigger monitoring board card and communication abnormity/disconnection information of the optical fiber.
7. The dc power transmission converter valve base electronic device of claim 1, wherein:
the number range of the trigger monitoring boards is 1-10, and the number range of the main control boards is 1-2.
8. The dc power transmission converter valve base electronic device of claim 2, wherein:
the number of the power supply boards ranges from 1 to 2.
9. A direct current transmission converter valve base electronic system is characterized by comprising: at least one trigger monitoring cabinet having at least one dc power converter valve base electronic device according to any of claims 1-8 disposed therein.
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| CN201911128343.5A CN110850210B (en) | 2019-11-18 | 2019-11-18 | Direct current transmission converter valve base electronic device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111398765A (en) * | 2020-04-01 | 2020-07-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Thyristor triggering abnormity protection method for direct current transmission system |
| CN111812423A (en) * | 2020-03-25 | 2020-10-23 | 中国南方电网有限责任公司超高压输电公司广州局 | High-voltage direct-current converter valve commutation failure prediction and identification system and method |
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| CN111812423A (en) * | 2020-03-25 | 2020-10-23 | 中国南方电网有限责任公司超高压输电公司广州局 | High-voltage direct-current converter valve commutation failure prediction and identification system and method |
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| CN111398765A (en) * | 2020-04-01 | 2020-07-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Thyristor triggering abnormity protection method for direct current transmission system |
| CN111398765B (en) * | 2020-04-01 | 2022-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Thyristor triggering abnormity protection method for direct current transmission system |
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