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Signal distributing and processing method and apparatus

A technology for distribution processing and signal transmission, which is applied in the field of power systems and can solve problems such as poor device versatility and scalability, and device compatibility issues.

Active Publication Date: 2017-10-24
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two situations in HVDC transmission projects: retrofitted DC projects and newly built DC projects; in the case of retrofitted DC projects and newly built DC projects, since the supplier of control and protection equipment and the supplier of converter valve equipment are usually not the same supplier, different There will be differences between the signals used to control the converter valve required by the control and maintenance equipment. In this way, when only the control and maintenance equipment or only the converter valve equipment is modified, it will bring compatibility problems of the equipment, and the commonality of the equipment Poor performance and scalability

Method used

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  • Signal distributing and processing method and apparatus
  • Signal distributing and processing method and apparatus
  • Signal distributing and processing method and apparatus

Examples

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Embodiment 1

[0069] figure 1 This is a flowchart of Embodiment 1 of the method for signal distribution and processing according to the present invention; the method for signal distribution and processing provided by the embodiment of the present invention is implemented by a signal distribution and processing device, and the signal distribution and processing device is applied to a converter valve control system and a converter valve control system. between units; such as figure 1 As shown, the method may include the following steps:

[0070] Step 101: Receive respective corresponding valve control signals sent by at least one converter valve control system CCP.

[0071] The signal distribution processing device receives the respective corresponding valve control signals sent by at least one CCP, and the valve control signals include: a control signal, a duty signal and a status signal; wherein, the control signal is used to control at least one bridge arm of the converter valve; the stat...

Embodiment 2

[0085] figure 2 It is the converter valve monitoring system in the second embodiment of the method for signal distribution processing of the present invention; such as figure 2 As shown, the converter valve monitoring system provided in this embodiment includes four parts: a converter valve control system 21 (CCP21), a signal distribution and processing device 22, a converter valve control unit 23 (VBE23) and a converter valve 24; , the converter valve control system 21 is composed of the converter valve control A system CCP_A and the converter valve control B system CCP_B, the signal distribution processing device 22 is composed of a logic operation module and a photoelectric / electrical-optical conversion module, and the converter valve control unit 23 is composed of a converter The flow valve control unit A system VBE_A, the converter valve control unit B system VBE_B are composed of an interface module, and the converter valve 24 is a controlled thyristor converter valve ...

Embodiment 3

[0138] Figure 8 It is a schematic structural diagram of an embodiment of an apparatus for signal distribution processing according to the present invention; such as Figure 8 As shown, the apparatus 08 for signal distribution processing provided by the embodiment of the present invention includes: a receiving module 81, a determining module 82, and a converting module 83; wherein,

[0139] The receiving module 81 is configured to receive the respective corresponding valve control signals sent by the at least one converter valve control system CCP;

[0140] The determining module 82 is configured to determine the CCP currently on duty according to the respective corresponding valve control signals, and determine an effective signal according to the valve control signal of the CCP currently on duty;

[0141] The conversion module 83 is configured to convert the valid signal to obtain a compatible signal compatible with the converter valve control unit VBE, and send the compati...

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Abstract

The invention discloses a signal distributing and processing method. The method includes the following steps that: corresponding valve control signals sent by at least one converter valve control protection (CCP) are received; converter valve control protections (CCP) which are currently in on-duty states are determined according to the corresponding valve control signals of the converter valve control protections (CCP), and effective signals are determined according to the valve control signals of the CCPs which are in the on-duty states currently; the effective signals are converted, so that compatible signals compatible with an valve-based electronic (VBE) unit can be obtained, and the compatible signals are sent to the valve-based electronic (VBE) unit; and converter valve state signals sent by the valve-based electronic (VBE) unit are received, the converter valve state signals are converted, so that converter valve state signals compatible with the at least one CCP are obtained, and the converter valve state signals compatible with the at least one CCP are sent to the at least one CCP. The present invention also discloses a signal distributing and processing device.

Description

technical field [0001] The present invention relates to the field of power systems, and in particular, to a method and device for signal distribution and processing. Background technique [0002] In HVDC transmission, the converter valve control system (Conversion Control Protection, CCP), the converter valve control unit (Valve-based Electronics, VBE) and the thyristor control unit (Thyristor Control Unit, TCU) constitute the entire two components of the converter valve. secondary monitoring system. [0003] At present, there are two situations in HVDC transmission projects: DC transformation projects and new DC projects; in DC transformation projects and new DC projects, because the control and protection equipment supplier and the converter valve equipment supplier are usually not the same supplier, different suppliers There will be differences between the signals required by the control and protection equipment to control the converter valve. In this way, when only the ...

Claims

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Application Information

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IPC IPC(8): H03K17/79G05B19/042
CPCG05B19/0423G05B2219/25458H03K17/79
Inventor 刘磊周晨张翔杨帆高晟辅潘卫明
Owner NR ELECTRIC CO LTD