CN-115967170-B - Flexible direct current transmission control system

CN115967170BCN 115967170 BCN115967170 BCN 115967170BCN-115967170-B

Abstract

The invention discloses a flexible direct-current transmission control system, which comprises a first control module and a second control module, wherein the first control module is connected with at least one first sub-module, the second control module is connected with at least one second sub-module, the first sub-module is connected with the second sub-module in a one-to-one correspondence manner, the first control module can send first transmission data to the first sub-module, the first sub-module can send the first transmission data to the second sub-module, the second control module can send second transmission data to the second sub-module, the second sub-module can send the second transmission data to the first sub-module, the first sub-module can upload third transmission data to the first control module, the second sub-module can send second feedback data to the first sub-module, the second sub-module can upload fourth transmission data to the second control module, and the first sub-module can send the first feedback data to the second sub-module.

Inventors

HE JING
PENG GUOPING
SHI BEN
BAI DAIBING
LI DONGSONG
ZENG ZHAOYI

Assignees

广东安朴电力技术有限公司

Dates

Publication Date: 20260505
Application Date: 20221104

Claims (9)

1. A flexible direct current transmission control system, comprising: The first control module is connected with at least one first sub-module; The second control module is connected with at least one second sub-module, and the first sub-module is connected with the second sub-module in a one-to-one correspondence manner; The first control module can send first transmission data to the first sub-module, the first transmission data comprises at least one of first command data and second command data, the first command data is used for controlling the first sub-module to work, the second command data is used for controlling the second sub-module to work, and the first sub-module can send the first transmission data to the second sub-module; The second control module can send second transmission data to the second sub-module, the second transmission data comprises at least one of third command data and fourth command data, the third command data is used for controlling the first sub-module to work, the fourth command data is used for controlling the second sub-module to work, the second sub-module can send the second transmission data to the first sub-module, the content of the first command data is the same as the content of the third command data, and the content of the second command data is the same as the content of the fourth command data; the first sub-module is capable of uploading third transmission data to the first control module, the third transmission data comprising at least one of first feedback data generated by the first sub-module and second feedback data generated by the second sub-module, the second sub-module being capable of sending second feedback data to the first sub-module; the second sub-module can upload fourth transmission data to the second control module, the fourth transmission data comprises at least one of first feedback data and second feedback data, and the first sub-module can send the first feedback data to the second sub-module; The first sub-module generates a first uplink data packet and a second uplink data packet according to first feedback data, the first uplink data packet is used for representing the identification of the first feedback data, the second uplink data packet is used for representing the content of the first feedback data, the first sub-module generates a third uplink data packet and a fourth uplink data packet according to the second feedback data, the third uplink data packet is used for representing the identification of the second feedback data, the fourth uplink data packet is used for representing the content of the second feedback data, and the first sub-module uploads the third transmission data to the first control module by taking a first set time as a first transmission period, wherein the first uplink data packet and the second uplink data packet are sequentially transmitted in one of two adjacent first transmission periods, and correspondingly, the third uplink data packet and the fourth uplink data packet are sequentially transmitted in the other first transmission period.
2. The flexible direct current transmission control system of claim 1, wherein the first submodule comprises a data processing unit, a first decoding unit, a first encoding unit, a second decoding unit and a second encoding unit, the data processing unit is respectively connected with the first decoding unit, the first encoding unit, the second decoding unit and the second encoding unit, the first control module is connected with the first decoding unit to send first transmission data, the first encoding unit is connected with the first control module to upload third transmission data, the second encoding unit is connected with the first decoding unit to obtain first transmission data, the second encoding unit is connected with the second submodule to send first transmission data, and the second decoding unit is connected with the second submodule to obtain second transmission data.
3. The flexible direct current transmission control system of claim 1, wherein the first control module is communicatively connected to the first sub-module, the first sub-module is communicatively connected to the second sub-module, and the second sub-module is communicatively connected to the second control module via fiber optic assemblies.
4. A flexible direct current transmission control system as described in claim 3, wherein said fiber optic assembly comprises two optical fibers.
5. The flexible direct current transmission control system of claim 1, wherein the first control module generates a first downlink data packet and a second downlink data packet according to first command data, the first downlink data packet is used for representing the identification of the first command data, the second downlink data packet is used for representing the content of the first command data, the first control module generates a third downlink data packet and a fourth downlink data packet according to the second command data, the third downlink data packet is used for representing the identification of the second command data, the fourth downlink data packet is used for representing the content of the second command data, the first control module issues first transmission data to the first sub-module in a second transmission period with a second set time as a second transmission period, wherein the first downlink data packet and the second downlink data packet are sequentially sent in one of two adjacent second transmission periods, and correspondingly, another second transmission period sequentially sends the third downlink data packet and the fourth downlink data packet.
6. The flexible direct current transmission control system of claim 5, wherein the first sub-module generates a first adjacent data packet and a second adjacent data packet according to the first feedback data, the first adjacent data packet is used for representing the identification of the first feedback data, the second adjacent data packet is used for representing the content of the first feedback data, the first sub-module transmits the first feedback data to the second sub-module by taking a third set time as a third transmission period, wherein in the same third transmission period, the first adjacent data packet and the second adjacent data packet are sequentially transmitted, and the first transmission data is transmitted after the first adjacent data packet and the second adjacent data packet are transmitted.
7. The flexible direct current transmission control system of claim 6, wherein the first set time, the second set time, and the third set time are the same.
8. A flexible direct current transmission control system as set forth in claim 1 wherein the first sub-module preferentially selects and responds to the first command data in the first transmission data when the first sub-module receives the first transmission data and the second transmission data, and wherein the first sub-module responds to the third command data in the second transmission data when the first sub-module receives only the second transmission data.
9. A flexible direct current transmission control system as set forth in claim 1 wherein said first control module is communicatively coupled to said second control module.

Description

Flexible direct current transmission control system Technical Field The invention relates to the field of electrical equipment, in particular to a flexible direct current transmission control system. Background The flexible direct current transmission has wide application in the fields of offshore wind power, island power transmission and new energy, wherein the flexible direct current transmission control system plays an important role, can ensure the stable operation of the whole power transmission structure and the safety of a converter valve, and in the flexible direct current transmission control system, the upper control module issues various command data to the sub-module in real time, the sub-module responds quickly, controls related components to operate, uploads the state of the sub-module and fault data of the lower layer to the control module, and the upper control module responds in time to make different adjustments and issues new command data to the sub-module. The sub-module is used as a bottommost execution unit in the whole flexible direct current transmission control system, the sub-module needs to analyze various data, issues various instructions for controlling a bypass structure, a valve unit driving structure, a thyristor driving structure and the like to various related components, and also needs to detect various faults such as voltage detection in real time to form fault data and send the fault data to an upper control module. In the flexible direct current transmission control system, the control module and the submodule are in communication connection through a transmission line, a certain risk exists in the structure, the transmission line breaks and other faults, at the moment, the submodule cannot receive a command issued by the control module, the submodule is in a black module state, the control module cannot learn state data of the submodule, and the flexible direct current transmission control system is dangerous. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a flexible direct-current transmission control system, which improves the operation reliability on the basis of reasonable arrangement cost. According to an embodiment of the first aspect of the invention, the flexible direct current transmission control system comprises a first control module, a second control module and a first control module, wherein the first control module is connected with at least one first sub-module; the second control module is connected with at least one second sub-module, and the first sub-module is connected with the second sub-module in a one-to-one correspondence manner; the first control module can send first transmission data to the first sub-module, the first transmission data comprises at least one of first command data and second command data, the first command data is used for controlling the first sub-module to work, the second command data is used for controlling the second sub-module to work, the first sub-module can send the first transmission data to the second sub-module, the second control module can send second transmission data to the second sub-module, the second transmission data comprises at least one of third command data and fourth command data, the third command data is used for controlling the first sub-module to work, the fourth command data is used for controlling the second sub-module to work, the second sub-module can send second transmission data to the first sub-module, the content of the first command data is the same as the content of the third command data, the content of the second command data is the same as the content of the fourth command data, the first sub-module can send the first transmission data to the second sub-module, the first sub-module can send the first transmission data to the first sub-module and the second sub-module, the first feedback data comprises at least one of feedback data and the first sub-module can send the second transmission data to the first sub-module, the second sub-module can upload fourth transmission data to the second control module, the fourth transmission data comprises at least one of first feedback data and second feedback data, and the first sub-module can send the first feedback data to the second sub-module. The flexible direct-current transmission control system provided by the embodiment of the invention has at least the following beneficial effects: The invention relates to a flexible direct current transmission control system, a first control module and a second control module are associated and synchronous, first transmission data issued by the first control module comprises first command data for controlling the operation of a first sub-module and second command data for controlling the operation of a second sub-module, second transmission data issued by the second control module comprises t