Communication interface and communication device and method of direct-current control system and stability control device,

A technology of a DC control system and a stabilization control device, which is applied in the field of communication, can solve problems such as the inability of the stabilization control device to issue abnormal blocking signals, and achieve the effect of eliminating major safety hazards and ensuring safe and stable operation.

Pending Publication Date: 2021-01-29
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a communication interface and a communication device and method for a DC control system and a stabilizing device, which are used to solve the problem that the two pole controls in the existing high-voltage direct current transmission project cannot send abnormal signals to the stabilizing device after they are out of service. Technical issues with blocking signals

Method used

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  • Communication interface and communication device and method of direct-current control system and stability control device,
  • Communication interface and communication device and method of direct-current control system and stability control device,
  • Communication interface and communication device and method of direct-current control system and stability control device,

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Embodiment 1

[0033] figure 1 It is a frame diagram of the communication device of the DC control system and the stability control device described in the embodiment of the present invention, figure 2 It is another frame diagram of the communication device between the DC control system and the stability control device described in the embodiment of the present invention.

[0034] Such as figure 1 As shown, the embodiment of the present invention provides a communication device for a DC control system and a stability control device, which is applied to a high-voltage direct current transmission system. The high-voltage direct current transmission system includes two pole control PCPs for pole 1 and pole 2 of the converter station, The stabilizing control device SSC and the DC station control SCC, the communication device between the DC control system and the stabilizing device includes a first communication unit 10, a second communication unit 20 and a control unit 30;

[0035] The firs...

Embodiment 2

[0044] The embodiment of the present invention also provides a communication method between a DC control system and a stabilizing device, which is applied to a high-voltage direct current transmission system, including: based on the above-mentioned communication device between a DC control system and a stabilizing device, if the DC station controller receives a change The two pole controllers of the flow station both stop working abnormally and the corresponding positive or negative poles of the two pole controllers are in the non-unlocked state. The control unit controls the operation of the second communication unit and transmits the communication signal on the DC station controller to the steady state. control device.

[0045] It should be noted that the communication signal is a signal that the positive pole or the negative pole of the converter station in the HVDC power transmission system is very blocked.

[0046] image 3 It is a communication signal transmission frame...

Embodiment 3

[0052] An embodiment of the present invention provides a communication interface, which is applied to a high-voltage direct current transmission system, and includes the above-mentioned communication device for a direct current control system and a stability control device.

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Abstract

The embodiment of the invention relates to a communication interface and a communication device and method of a direct-current control system and a stability control device, which are applied to a high-voltage direct-current power transmission system, and the high-voltage direct-current power transmission system comprises two pole controllers of a converter station pole 1 and a converter station pole 2, the stability control device and a direct-current station controller. The communication device of the direct current control system and the stability control device comprises a first communication unit, a second communication unit and a control unit. By adding the second communication unit, the control unit controls the second communication unit to operate when abnormal locking signals cannot be sent to the stability control device after a pole control dual system of the high-voltage direct-current power transmission system is shut down, so that the direct-current station controller transmits pole control abnormal locking information to the stability control device, and the stability control device can correctly and reliably act on an outlet; safe and stable operation of a power grid is guaranteed, the technical problem that abnormal locking signals cannot be sent to a stability control device after two pole controllers in an existing high-voltage direct-current power transmission project are shut down is solved, and major potential safety hazards possibly caused by refusal of the stability control device are eliminated.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a communication interface, a communication device and a method for a DC control system and a stability control device. Background technique [0002] The high-voltage direct current transmission system refers to the erection of two circuits of direct current transmission channels on one tower, and the four lines of the bipolar transmission line of the two circuits of direct current are all erected on one pole and tower, which is equivalent to two direct current transmission projects connected in parallel, and two circuits of four The pole transmission line shares the rectification station and the inverter station. In the HVDC power transmission system, the control system of each rectifier station or inverter station has two two-circuit coordination control devices, two return I DC station control devices, two return II DC station control devices, and two return I poles 1 p...

Claims

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Application Information

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IPC IPC(8): H02J3/36H02J13/00
CPCH02J3/36H02J13/00006H02J13/00032H02J13/00028H02J13/00017Y02E60/60
Inventor 赵宏伟朱煜昆叶萌郭琦李晶朱益华陈志聪常东旭尚慧玉张力飞陈明辉张璟沛武明康
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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