CN103595492B - CDT channel fault alarm system - Google Patents
CDT channel fault alarm system Download PDFInfo
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- CN103595492B CN103595492B CN201310465168.5A CN201310465168A CN103595492B CN 103595492 B CN103595492 B CN 103595492B CN 201310465168 A CN201310465168 A CN 201310465168A CN 103595492 B CN103595492 B CN 103595492B
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- 238000004891 communication Methods 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention discloses a kind of CDT channel fault alarm system, comprise master station communication machine, sub-station communication machine, main website terminal, main channel and alternate channel is had between master station communication machine and sub-station communication machine, respectively be made up of a data feedback channel and down going channel, two down going channels respectively connect an On-line Fault Detection device, connect successively again and combine from device, sub-station communication machine, combine from device by on-line checkingi data upload to sub-station communication machine, master station communication machine, finally be sent to main website terminal, for dispatcher's record, warning, process.CDT channel fault alarm system of the present invention, can monitor down going channel running status in real time, the fault that Timeliness coverage down going channel occurs, accurately judges it is interrupt or occur error code, does not affect remote control and normal data transmission.Thus provide more guarantee for electric network security and the quality of power supply.
Description
Technical field
The present invention relates to electric power safety supervisory control system, relate in particular to a kind of CDT channel fault alarm system.
Background technology
Intelligent substation is combined in tradition and is developed in transformer station and digital transformer substation basis, achieves the informationization of electrical network, automation, interactive management.After transformer station realizes unattended operation, the reliability of remote control directly affects safety, economy, the reliability service of electrical network.At present, during dispatcher's remote control converting equipment, sometimes occur that remote measurement, remote signalling data are correct, remote control is returned to school time-out, can not remote control, and need operate team and to be on the scene operation, in operation team this period of time to scene, this transformer station and following electrical network are in uncontrollable state.Remote measurement, remote signalling data correctly illustrate substation work and data feedback channel working properly, time-out of returning to school illustrates that substation does not receive guidance command, be down going channel fault is cause.
At present, existing solution has two kinds, a kind of with being that software replaces manual remote control to return to school judging down going channel fault, but during software detection down going channel, dispatcher cannot remote control, produces a large amount of straighforward operation records simultaneously; Another kind in detection down going channel, judges whether passage interrupts with hardware or software approach with or without synchronization character, but can not accurately judge interrupt or occur error code.
Summary of the invention
For above-mentioned defect, the invention provides a kind of CDT channel fault alarm system, down going channel running status can be monitored in real time, the fault that Timeliness coverage down going channel occurs, accurately judge it is interrupt or occur error code, do not affect remote control and normal data transmission.Thus provide more guarantee for electric network security and the quality of power supply.
To achieve these goals, technical scheme of the present invention is:
A kind of CDT channel fault alarm system, comprise master station communication machine, sub-station communication machine, main website terminal, main channel and alternate channel is provided with between described master station communication machine and sub-station communication machine, described main channel and alternate channel are respectively made up of a data feedback channel and a down going channel, two down going channels respectively connect an On-line Fault Detection device, two On-line Fault Detection devices are connected from device with comprehensive, by on-line checkingi data upload to combining from device, described combining is connected with sub-station communication machine by remote signalling from device, described sub-station communication machine by on-line checkingi data upload to master station communication machine, decompose at master station communication machine and deliver to main website terminal record, process,
Described On-line Fault Detection device, comprise the high impedance amplifier, level translator, CDT state machine, optical isolation, the relay that connect successively, described high impedance amplifier is connected with down going channel, for receiving down going channel data, described level translator is in order to the connection of high impedance amplifier under realizing different voltage and CDT state machine, described CDT state machine receives data, carry out School Affairs judgement, and check results and judged result are converted to the signal of telecommunication, after being amplified by optical isolation, drive relay, sent to by relay and combine from device.
Improve as to technique scheme, described CDT state machine is the 1T series monolithic of STC.
Improve as to technique scheme, described CDT state machine is provided with CDT parsing module, to realize the parsing of CDT agreement, CDT conventions data is resolved and is divided into the synchronous prefix of search, control word analysis, receiving data frames three states.
As the improvement to technique scheme, described CDT state machine is provided with timer, and for adding up down going channel without data time, time-out is reported to the police.
Improve as to technique scheme, connected by heartbeat between described two On-line Fault Detection devices, realize the mutual inspection of two On-line Fault Detection devices.
CDT state machine in native system, CDT conventions data is resolved and is divided into the synchronous prefix of search, control word analysis, receiving data frames three states, to receive data-driven state-transition, realize the parsing of CDT data, and the integrality of checking data, receive a complete message, illustrate that down going channel is working properly, remove channel interrupt signal, data error signal; Verification makes mistakes, output channel data error signal, illustrates that passage has interference, or communication device hydraulic performance decline, needs maintenance; Use timer checks, if within 20 minutes, also do not receive a complete message, judges channel interrupt, output channel interrupt signal; Two-shipper heartbeat pulse 2Hz, if 10 seconds do not receive heartbeat pulse, illustrates that the other side shuts down, reports the other side's stopping signal.
The invention has the beneficial effects as follows: CDT channel fault alarm system of the present invention, down going channel running status can be monitored in real time, the fault that Timeliness coverage down going channel occurs, accurately judge it is interrupt or occur error code, do not affect remote control and normal data transmission.Thus provide more guarantee for electric network security and the quality of power supply.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
As shown in Figure 1, CDT channel fault alarm system of the present invention, comprise master station communication machine, sub-station communication machine, main website terminal, main channel and alternate channel is provided with between described master station communication machine and sub-station communication machine, described main channel and alternate channel are respectively made up of a data feedback channel and a down going channel, two down going channels respectively connect an On-line Fault Detection device, two On-line Fault Detection devices are connected from device with comprehensive, by on-line checkingi data upload to combining from device, described combining is connected with sub-station communication machine by remote signalling from device, described sub-station communication machine by on-line checkingi data upload to master station communication machine, decompose at master station communication machine and deliver to main website terminal record, report to the police, process,
Described On-line Fault Detection device, comprise the high impedance amplifier, level translator, CDT state machine, optical isolation, the relay that connect successively, described high impedance amplifier is connected with down going channel, for receiving down going channel data, described level translator is in order to the connection of high impedance amplifier under realizing different voltage and CDT state machine, described CDT state machine receives data, carry out School Affairs judgement, and check results and judged result are converted to the signal of telecommunication, after being amplified by optical isolation, drive relay, sent to by relay and combine from device.
Described CDT state machine is the 1T single-chip microcomputer of STC.
Described CDT state machine is provided with CDT parsing module, to realize the parsing of CDT agreement, CDT conventions data is resolved and is divided into the synchronous prefix of search, control word analysis, receiving data frames three states.
Described CDT state machine is provided with timer, and for adding up down going channel without data time, time-out is reported to the police.
Connected by heartbeat between described two On-line Fault Detection devices, realize the mutual inspection of two On-line Fault Detection devices.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a CDT channel fault alarm system, it is characterized in that: comprise master station communication machine, sub-station communication machine, main website terminal, main channel and alternate channel is provided with between described master station communication machine and sub-station communication machine, described main channel and alternate channel are respectively made up of a data feedback channel and a down going channel, two down going channels respectively connect an On-line Fault Detection device, two On-line Fault Detection devices are connected from device with comprehensive, by on-line checkingi data upload to combining from device, described combining is connected with sub-station communication machine by remote signalling from device, described sub-station communication machine by on-line checkingi data upload to master station communication machine, decompose at master station communication machine and deliver to main website terminal record, process,
Described On-line Fault Detection device, comprise the high impedance amplifier, level translator, CDT state machine, optical isolation, the relay that connect successively, described high impedance amplifier is connected with down going channel, for receiving down going channel data, described level translator is in order to the connection of high impedance amplifier under realizing different voltage and CDT state machine, described CDT state machine receives data, carry out School Affairs judgement, and check results and judged result are converted to the signal of telecommunication, after being amplified by optical isolation, drive relay, sent to by relay and combine from device.
2. CDT channel fault alarm system according to claim 1, it is characterized in that: described CDT state machine is provided with CDT parsing module, to realize the parsing of CDT agreement, CDT conventions data is resolved and is divided into the synchronous prefix of search, control word analysis, receiving data frames three states.
3. CDT channel fault alarm system according to claim 1 and 2, is characterized in that: described CDT state machine is provided with timer, and for adding up down going channel without data time, time-out is reported to the police.
4. CDT channel fault alarm system according to claim 3, is characterized in that: connected by heartbeat between described two On-line Fault Detection devices, realize the mutual inspection of two On-line Fault Detection devices.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310465168.5A CN103595492B (en) | 2013-10-09 | 2013-10-09 | CDT channel fault alarm system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310465168.5A CN103595492B (en) | 2013-10-09 | 2013-10-09 | CDT channel fault alarm system |
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| CN103595492A CN103595492A (en) | 2014-02-19 |
| CN103595492B true CN103595492B (en) | 2015-11-18 |
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| CN105158599B (en) * | 2015-08-18 | 2018-01-12 | 安徽立卓智能电网科技有限公司 | A kind of method for judging scheduling system busbar power-off telegram in reply in time |
| CN112532421B (en) * | 2020-10-27 | 2023-12-22 | 南京国电南自电网自动化有限公司 | Channel state on-line sensing and multiplexing unit, device and method based on FPGA |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583212A (en) * | 1991-09-19 | 1993-04-02 | Nec Eng Ltd | Line monitoring system |
| CN101163017A (en) * | 2007-08-28 | 2008-04-16 | 东南大学 | Embedded transformer station information integrated server |
| CN103036625A (en) * | 2012-12-07 | 2013-04-10 | 辽宁省电力有限公司营口供电公司 | Design method of detecting system for telecontrol remote terminal unit (RTU) and information channel |
-
2013
- 2013-10-09 CN CN201310465168.5A patent/CN103595492B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583212A (en) * | 1991-09-19 | 1993-04-02 | Nec Eng Ltd | Line monitoring system |
| CN101163017A (en) * | 2007-08-28 | 2008-04-16 | 东南大学 | Embedded transformer station information integrated server |
| CN103036625A (en) * | 2012-12-07 | 2013-04-10 | 辽宁省电力有限公司营口供电公司 | Design method of detecting system for telecontrol remote terminal unit (RTU) and information channel |
Non-Patent Citations (1)
| Title |
|---|
| 循环式CDT规约远动下行通道自动监视的实现;李启林;《继电器》;20060916;第34卷(第18期);第42-46页 * |
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Address after: 100031 Beijing, Xicheng District, west of No. 86 national Power Grid Corp, Applicant after: State Grid Corporation of China Applicant after: MENGZHOU ELECTRIC POWER CO., LTD. Address before: 100031 Beijing, Xicheng District, west of No. 86 national Power Grid Corp, Applicant before: State Grid Corporation of China Applicant before: Mengzhou Electric Power Co., Ltd. |
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