CN102946082A - Realizing method for redundant communication by using double buses - Google Patents
Realizing method for redundant communication by using double buses Download PDFInfo
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- CN102946082A CN102946082A CN2012104075154A CN201210407515A CN102946082A CN 102946082 A CN102946082 A CN 102946082A CN 2012104075154 A CN2012104075154 A CN 2012104075154A CN 201210407515 A CN201210407515 A CN 201210407515A CN 102946082 A CN102946082 A CN 102946082A
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Abstract
The invention discloses a realizing method for redundant communication by using double buses; a starting element and a protection action element are independent from each other; starting signals are sent to an outlet logic element by the starting element through an internal bus; protection action signals are sent to the outlet logic element by the protection action element through an external bus; and the starting signals and the protection action signals synchronously appear in an outlet of the outlet logic element. The communication method is suitable for the bus communication of a high-voltage and direct-current protecting device to effectively prevent the wrong protection operation due to the failure of communication buses or hardware of the protecting device.
Description
Technical field
The present invention relates to a kind of high voltage direct current protective device means of communication, particularly relate to a kind of method that adopts the new-type redundancy communication of dual bus.
Background technology
High voltage direct current transmission is because its distinctive advantage, such as: long distance, high-power, Asynchronous Interconnection, power quick adjustment, trend controllability, transmission of electricity economy etc., is applied more and more widely.The core of HVDC (High Voltage Direct Current) transmission system is voltage direct-current transmission control protection system, comprises control system and protection system.
Protective device internal communication mode in the high voltage DC engineering protection system adopts a kind of bus communication mode at present, and without the self checking function, may cause the outlet of protection mistake when device internal bus communication abnormality.Thereby overprotection device internal bus communication abnormality appears in domestic DC engineering causes protecting the mistake outlet to cause the situation of mistake locking direct current, has reduced the reliability of high voltage direct current transmission.
Summary of the invention
Purpose of the present invention: be to provide a kind of implementation method that adopts the double-bus redundancy communication, its suitable high voltage direct current protective device bus communication can prevent effectively that protective device communication bus fault or hardware fault from causing protecting misoperation.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of implementation method that adopts the double-bus redundancy communication; starting component and protection action element are independent; enabling signal is delivered to the outlet logic element by starting component by internal bus; the protection actuating signal is delivered to the outlet logic element by the protection action element by external bus, outlet logic element outlet when enabling signal and protection actuating signal occur simultaneously.
Above-mentioned enabling signal has the self checking function, and the concrete grammar of self checking is as follows:
The enabling signal that starting component sends is not only directly delivered to the outlet logic element by internal bus; also deliver to the outlet logic element by internal bus after this signal negate; the signal of aforementioned negate is in the again negate of outlet logic element; then and directly deliver to the former enabling signal of outlet logic element through logical “and”; if being "True", the result represents the enabling signal action; the result for " vacation " then self checking be judged as signal and make mistakes, protection will can not export.
Above-mentioned protection actuating signal has the self checking function, and the concrete grammar of self checking is as follows:
The protection actuating signal that the protection action element sends is not only directly delivered to the outlet logic element by external bus; also deliver to the outlet logic element by external bus after this signal negate; the signal of aforementioned negate is in the again negate of outlet logic element; then and directly deliver to the former protection actuating signal of outlet logic element and carry out logical “and”; if being "True", the result represents to protect the actuating signal action; the result for " vacation " then self checking be judged as signal and make mistakes, protection will can not export.
After adopting such scheme; the invention has the beneficial effects as follows: the present invention proposes a kind of new-type redundancy communication implementation method of employing dual bus of suitable high voltage direct current protective device bus communication; can effectively avoid protective device communication bus fault or hardware fault to cause protecting misoperation; can improve the reliability of protective device, reduce the risk that direct current system is stopped transport.
Description of drawings
Fig. 1 is logic diagram of the present invention;
Fig. 2 is the implementation method logic diagram of enabling signal self checking among the present invention;
Fig. 3 is the implementation method logic diagram of protection actuating signal self checking among the present invention.
Embodiment
Below with reference to drawings and the specific embodiments, technical scheme of the present invention is elaborated.
The invention provides a kind of implementation method that adopts the double-bus redundancy communication; it is the outlet mode that adopts " starting+the protection action " for direct current protecting; starting component and protection action element be situation independently; starting component is connected with the outlet logic element by internal bus, and the protection action element is connected with the outlet logic element by external bus.As shown in Figure 1; when detecting fault, starting component carries out logical operation; send enabling signal and deliver to the outlet logic element by internal bus (such as the HTM bus); the protection action element carries out logical operation when detecting fault equally; send the protection actuating signal and deliver to the outlet logic element by external bus (such as the IEC6004408 bus), protection outlet when enabling signal and protection actuating signal all are "True".
The enabling signal that transmits and protection actuating signal all have the self checking function, and verification goes out error protection and will can not export.Implementation example below in conjunction with the description of drawings self checking:
The self checking of enabling signal as shown in Figure 2; enabling signal is not only directly delivered to the outlet logic element by internal bus; and also deliver to the outlet logic element by internal bus in starting component inside later on by getting the negation computing; this signal is in the again negate of outlet logic unit; then and directly deliver to the former enabling signal of outlet logic element and carry out logical “and”; " with " result is that "True" represents enabling signal action; for " vacation " then self checking be judged as signal and make mistakes, protection will can not export.
The self checking of protection actuating signal as shown in Figure 3; the protection actuating signal is not only directly delivered to the outlet logic element by external bus; and protecting action element inside also to deliver to the outlet logic element by external bus later on by getting the negation computing; this signal is in the again negate of outlet logic element; then and directly deliver to the former protection actuating signal of outlet logic element and carry out logical “and”; " with " result is that "True" represents to protect actuating signal action; for " vacation " then self checking be judged as signal and make mistakes, protection will can not export.
Above embodiment only for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of doing on the technical scheme basis all falls within the protection range of the present invention.
Claims (3)
1. implementation method that adopts the double-bus redundancy communication; it is characterized in that: starting component and protection action element are independent; enabling signal is delivered to the outlet logic element by starting component by internal bus; the protection actuating signal is delivered to the outlet logic element by the protection action element by external bus, outlet logic element outlet when enabling signal and protection actuating signal occur simultaneously.
2. a kind of implementation method that adopts the double-bus redundancy communication as claimed in claim 1, it is characterized in that: described enabling signal has the self checking function, and the concrete grammar of self checking is as follows:
The enabling signal that starting component sends is not only directly delivered to the outlet logic element by internal bus; also deliver to the outlet logic element by internal bus after this signal negate; the signal of aforementioned negate is in the again negate of outlet logic element; then and directly deliver to the former enabling signal of outlet logic element through logical “and”; if being "True", the result represents the enabling signal action; the result for " vacation " then self checking be judged as signal and make mistakes, protection will can not export.
3. a kind of implementation method that adopts the double-bus redundancy communication as claimed in claim 1, it is characterized in that: described protection actuating signal has the self checking function, and the concrete grammar of self checking is as follows:
The protection actuating signal that the protection action element sends is not only directly delivered to the outlet logic element by external bus; also deliver to the outlet logic element by external bus after this signal negate; the signal of aforementioned negate is in the again negate of outlet logic element; then and directly deliver to the former protection actuating signal of outlet logic element and carry out logical “and”; if being "True", the result represents to protect the actuating signal action; the result for " vacation " then self checking be judged as signal and make mistakes, protection will can not export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104075154A CN102946082A (en) | 2012-10-23 | 2012-10-23 | Realizing method for redundant communication by using double buses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104075154A CN102946082A (en) | 2012-10-23 | 2012-10-23 | Realizing method for redundant communication by using double buses |
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| CN102946082A true CN102946082A (en) | 2013-02-27 |
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| CN2012104075154A Pending CN102946082A (en) | 2012-10-23 | 2012-10-23 | Realizing method for redundant communication by using double buses |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593822A (en) * | 2013-09-30 | 2016-05-18 | 慧与发展有限责任合伙企业 | Interpreting signals received from redundant buses |
| CN110532209A (en) * | 2019-08-13 | 2019-12-03 | 南京芯驰半导体科技有限公司 | A kind of safety bus system based on redundancy isomery |
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| US4804515A (en) * | 1984-10-31 | 1989-02-14 | Westinghouse Electric Corp. | Distributed microprocessor based sensor signal processing system for a complex process |
| CN1637713A (en) * | 2003-12-23 | 2005-07-13 | 国际商业机器公司 | (18, 9) error correction code for double error correction and triple error detection |
| CN1885656A (en) * | 2006-06-29 | 2006-12-27 | 南京南瑞继保电气有限公司 | Method for preventing protection mis-action and non-action of double high-voltage DC protection |
| CN102171763A (en) * | 2008-10-02 | 2011-08-31 | 国际商业机器公司 | Optimizing sram performance over extended voltage or process range using self-timed calibration of local clock generator |
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2012
- 2012-10-23 CN CN2012104075154A patent/CN102946082A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804515A (en) * | 1984-10-31 | 1989-02-14 | Westinghouse Electric Corp. | Distributed microprocessor based sensor signal processing system for a complex process |
| CN1637713A (en) * | 2003-12-23 | 2005-07-13 | 国际商业机器公司 | (18, 9) error correction code for double error correction and triple error detection |
| CN1885656A (en) * | 2006-06-29 | 2006-12-27 | 南京南瑞继保电气有限公司 | Method for preventing protection mis-action and non-action of double high-voltage DC protection |
| CN102171763A (en) * | 2008-10-02 | 2011-08-31 | 国际商业机器公司 | Optimizing sram performance over extended voltage or process range using self-timed calibration of local clock generator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593822A (en) * | 2013-09-30 | 2016-05-18 | 慧与发展有限责任合伙企业 | Interpreting signals received from redundant buses |
| CN110532209A (en) * | 2019-08-13 | 2019-12-03 | 南京芯驰半导体科技有限公司 | A kind of safety bus system based on redundancy isomery |
| WO2021027644A1 (en) * | 2019-08-13 | 2021-02-18 | 南京芯驰半导体科技有限公司 | Safety bus system based on reduncancy and heterogeneity |
| CN110532209B (en) * | 2019-08-13 | 2022-02-22 | 南京芯驰半导体科技有限公司 | Safety bus system based on redundancy heterogeneous |
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Application publication date: 20130227 |