CN106505510B - A kind of high security electic protection investigating method and device - Google Patents
A kind of high security electic protection investigating method and device Download PDFInfo
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- CN106505510B CN106505510B CN201610927533.3A CN201610927533A CN106505510B CN 106505510 B CN106505510 B CN 106505510B CN 201610927533 A CN201610927533 A CN 201610927533A CN 106505510 B CN106505510 B CN 106505510B
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- 238000000034 method Methods 0.000 title claims abstract description 17
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- 238000012795 verification Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 2
- 238000005070 sampling Methods 0.000 claims 1
- 230000006870 function Effects 0.000 abstract description 22
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- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004364 calculation method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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Abstract
The present invention discloses a kind of high security electic protection investigating method and device.Using two processors; wherein first processor is responsible for electic protection observing and controlling and the operation of algorithm; second processor only realizes the miscellaneous functions such as man-machine interface (HMI), key, event, recording and the communication interface of electrical equipment; first, second processor carries out data exchange by the way of shared drive; by shared drive duplicate system retrofit and second processor to measures such as the writing protection functions of shared drive, second processor failure is made to will not influence the operation and outlet of first processor defencive function.The Redundancy Designs functions such as built in diagnostics technology and ac analog input module duplicate system retrofit, switching input module duplicate system retrofit such as first processor built-in RAM, FLASH error checking and correction (ECC) function; improve the operational reliability of first processor; the safety for mutually verifying, improving electic protection investigating method and device in real time by double-core inside first processor can effectively prevent the harm of electic protection investigating method and failure of apparatus to the person, equipment safety.
Description
Technical field
The invention belongs to protecting electrical power system measurement and control area, it is particularly suitable for electic protection measure and control device security requirement
High occasion.
Background technique
Electic protection measure and control device mainly realizes the guarantor of the primary equipments such as route, transformer, motor in electric system
Protect observing and controlling function.Electic protection measure and control device has been widely used for power plant, petroleum, chemical industry, the various electricity consumptions in steel now
Facility.The exception of electic protection measure and control device can cause confusion to user's consecutive production, especially lead in nuclear power, chemical industry etc.
In domain, the failure of electic protection measure and control device or malfunction can even jeopardize personal, equipment safety, cause serious consequence.
Existing electic protection measure and control device structure is only inputted all the way and is exported all the way, although can be realized electic protection survey
The minimum system of control configures, but the structure itself is without built in diagnostics and fault redundance design function, any a part of subsystem
The failure of system can all lead to the failure of whole device, and therefore, whole device is unsafe.
Summary of the invention
The object of the present invention is to provide a kind of high security electic protection investigating method and device, by built in diagnostics and
Redundancy Design function improves the safety of electic protection investigating method and device, prevents electic protection investigating method and device from losing
Effect jeopardizes the safety of the person, equipment.
Technical solution of the present invention content are as follows: a kind of high security electic protection investigating method, at setting the first, second two
Manage device；The analog input (AI) of first processor realization electrical equipment protection and the operation of observing and controlling algorithm, electric current and voltage is opened
Pass amount input (BI) and output switch parameter (BO) and analog output (AO) access first processor；Second processor realizes electricity
The miscellaneous functions such as man-machine interface (HMI), key, event, recording and the communication interface of gas equipment.At first processor and second
Reason device carries out data exchange by way of shared drive.
In above scheme: the first processor is dual core processor, runs identical program in double-core, mutually in real time
Verification guarantees the correctness of first processor instruction system.
In above scheme: the first processor be used only processor built-in RAM, FLASH storage unit, built-in RAM,
FLASH has the function of error checking and corrects (ECC), can effectively correct 1 bit-errors, detect 2 bit-errors.Guarantee from the
The correctness that data are transmitted on one processor to built-in FlASH and RAM bus.
In above scheme: the second processor only realizes man-machine interface (HMI), key, the event, record of electrical equipment
The miscellaneous functions such as wave and communication interface, second processor failure will not influence the operation and outlet of defencive function.
In above scheme: the first processor and second processor carries out data friendship by way of shared drive
It changes, first processor can transmit information to second processor at any time, and second processor only under specific circumstances could be to the
One processor transmits information.
In above scheme: the analog input of the electric current of the described access first processor and voltage, On-off signal and
First, second processor sharing internal memory carries out dual processing, improves the safety of each subsystem.
The present invention also provides a kind of high security electic protection measure and control devices, it is characterised in that: the device by man-machine interface,
CPU card, power insert and exchange head plug-in unit composition, include CPU module, ac analog input module, On-off signal
Module, switching value output module, analog output module, power module and human-machine interface module.Power module by direct current or
Exchange conversion is at required voltage inside device；CPU module is connected with ac analog input module, switching input module,
Signal is acquired by the Current Voltage of acquisition and remote signalling is opened into signal, carries out logic calculation and calculated result is delivered to switching value
Output module and analog output module；Human-machine interface module is connect with CPU module, provides man-machine information interface, and display is corresponding
The relevant informations such as definite value, analog quantity and event, and unit state indicator light is provided.
In above scheme: the CPU module includes the first, second two processors, protects and measures to electrical equipment
Algorithm concentrates in first processor completing, remaining realize the man-machine interface (HMI) of electrical equipment, key, event, recording and
The miscellaneous functions such as communication interface are completed in second processor.First processor is dual core processor, is run in double-core identical
Program, mutually verification in real time.Processor built-in RAM, FLASH storage unit, and built-in RAM, FLASH is used only in first processor
Have the function of error checking and corrects；First processor and second processor carry out data exchange by way of shared drive,
Shared drive uses duplicate system retrofit, and first processor can transmit information to second processor at any time, and second processor is to altogether
Memory is enjoyed with writing protection function, only could transmit information to first processor under specific circumstances；In addition, second processor
It can choose the identical processor with error checking and correction function with the first processor, other places can also be used
Device is managed, second processor failure will not influence the operation and outlet of unit protection observing and controlling function.
In above scheme: direct current or alternating current input power supplying are transformed into the electricity needed inside device by the power module
Pressure.
In above scheme: the exchange input module converts voltage transformer or Current Transformer Secondary side electrical quantity
At small voltage signal, CPU module is inputted using the analog-to-digital conversion (AD) of duplicate system retrofit afterwards.
In above scheme: the switching value of the switching input module access is defeated after the light-coupled isolation of duplicate system retrofit
Enter CPU module.
In above scheme: the switching value output module includes that all tripping outlet and alarm contact, CPU are patrolled
It collects and calculates and calculated result is delivered to switching value output module.
In above scheme: the analog output module provides 4-20mA electric current output function, and CPU carries out logic calculation
And calculated result is delivered to analog output module.
In above scheme: the human-machine interface module is made of liquid crystal, keyboard, signal lamp, human-machine interface module
It is connected with CPU module, facilitates and carry out man-machine interface between user and device.
Using technical solution of the present invention, have the advantages that
(1) core protection control independent operating is in first processor, and independent of second processor, second processor is appointed
Why the operation that will not influence first processor is hindered.
(2) there is hardware gating switch, usually work in off-state, second processor cannot be sent to first processor
Information has prevented influence of the second processor information exchange to first processor.
(3) by mutually real-time lock-step (Lockstep) verification of double-core inside first processor, first processor to built-in
There is the built in diagnostics technology such as error checking and correction (ECC) and ac analog input module dual to match by RAM, FLASH
It sets, the Redundancy Designs function such as switching input module duplicate system retrofit, shared drive duplicate system retrofit, improves electic protection survey
The safety for controlling method and device can effectively prevent the harm of electic protection investigating method and device to the person, equipment safety.
Detailed description of the invention
Fig. 1 is device hardware configuration principle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is illustrated for the high security electic protection measure and control device developed below based on foregoing invention, device hardware knot
Structure principle is as shown in Figure 1.
1) device is defeated by CPU module, power module, AC current-voltage input module, switching input module, switching value
Module, analog output module and human-machine interface module etc. form out.
2) switching value of switching input module access inputs CPU module after the light-coupled isolation of duplicate system retrofit, exchanges
Voltage transformer or Current Transformer Secondary side electrical quantity are converted into small voltage signal by input module, using duplicate system retrofit
Analog-to-digital conversion (AD) inputs CPU module afterwards.CPU module compares exchange input and the On-off signal of duplicate system retrofit, when comparing
As a result when identical, device is operated normally, and when comparison result difference, device issues abnormality alarming, reminds operations staff planned
Ground takes measures the problem of solving device exception.
3) CPU module includes the first, second two processors, is concentrated at first to electrical equipment protection and Measurement Algorithm
It is completed in reason device, remaining realizes man-machine interface (HMI), key, logout, recording, clock synchronization and the communication etc. of electrical equipment
Miscellaneous function is completed in second processor；First processor is dual core processor, and identical program is run in double-core, mutually real
When verification guarantee processor instruction safety.First processor built-in RAM, FLASH have the function of error checking and correct；The
Two processor faults will not influence the operation and outlet of protection device protection observing and controlling function.
4) first processor and second processor carry out data exchange by way of shared drive, and shared drive is using double
Change configuration again, by shared drive interaction data between first processor and man-machine second processor, interaction mechanism is as follows:
When a) operating normally, first processor is used for the analog quantity of liquid crystal display, switch to second processor one-way transmission
Amount state etc..
B) by hardware Lock, starting Enable/Disable second processor to shared drive write data (including fixed value adjusting,
Manual recording, report are removed, electric degree is removed, initialization).
C) all data (instruction) that second processor is write to first processor are written inside dual shared drive altogether,
First processor verifies two data unanimously and correctly just approves the data.
5) CPU module carries out logic calculation, and calculated result under normal circumstances, is delivered to analog quantity by portion's verification in the device
Output module and switching value output module.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, belongs to the scope of protection of the invention.
Claims (8)
1. a kind of high security electic protection investigating method, it is characterized in that: being arranged first, second in electic protection measure and control device
Two processors, specific control method step include:
It is completed in first processor to electrical equipment protection and the calculating of Measurement Algorithm；
Remaining miscellaneous function is completed in second processor；
The first processor is dual core processor, runs identical program in double-core, mutually verification in real time；
The first processor transmits information to the second processor, and the second processor is the case where hardware switch gates
It is lower to transmit information to the first processor.
2. a kind of high security electic protection investigating method as described in claim 1, it is characterised in that: electic protection observing and controlling dress
Electric current, voltage, On-off signal and the switching value and analog output set access the first processor；Man-machine interface is pressed
Key and communication interface access the second processor.
3. a kind of high security electic protection investigating method as described in claim 1, it is characterised in that: the first processor
Data exchange is carried out by way of shared drive with second processor, shared drive divides into two pieces of regions, and described first,
Two processors need the information exchanged while being stored in two pieces of regions, mutually verify.
4. the high security electic protection investigating method as described in any in claims 1 to 3, it is characterised in that: described
One processor carries out the operation of protective program double-core, mutually verification, also, accesses the electric current, voltage, On-off signal of the processor
And the first, second processor shared information carries out dual processing.
5. a kind of high security electic protection measure and control device, it is characterized in that: device include exchange input module, AD sampling module,
It opens into module, output module, LCD module, clock synchronization module, communication module and CPU module, the CPU module includes first, second
Two processors concentrate in first processor completing to electrical equipment protection and Measurement Algorithm, remaining miscellaneous function is second
It is completed in processor；The first processor is dual core processor, runs identical program in double-core, mutually verification in real time, institute
It states and RAM, FLASH is set in first processor, realize error checking and correct function；When the second processor failure, protection
The operation and outlet of function are normally carried out；The first processor and second processor carry out data by way of shared drive
Exchange, shared drive divide into two pieces of regions, and first, second processor needs the information exchanged while being stored in the area Liang Kuai
Domain mutually verifies, and the second processor has writing protection function to shared drive.
6. a kind of high security electic protection measure and control device as claimed in claim 5, it is characterised in that: electic protection observing and controlling dress
Electric current, voltage, On-off signal and the switching value and analog output set access the first processor；Man-machine interface is pressed
Key and communication interface access the second processor.
7. the high security electic protection measure and control device as described in claim 5 to 6 is any, it is characterised in that: described first
Processor carries out the operation of protective program double-core, mutually verification, accesses the electric current of the processor, voltage, On-off signal and described
First, second processor shared information carries out dual processing.
8. a kind of high security electic protection measure and control device as claimed in claim 5, it is characterised in that: the second processor
For the processor with error checking and correction function identical with the first processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927533.3A CN106505510B (en) | 2016-10-31 | 2016-10-31 | A kind of high security electic protection investigating method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610927533.3A CN106505510B (en) | 2016-10-31 | 2016-10-31 | A kind of high security electic protection investigating method and device |
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| CN106505510A CN106505510A (en) | 2017-03-15 |
| CN106505510B true CN106505510B (en) | 2019-01-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204497713U (en) * | 2015-01-09 | 2015-07-22 | 国家电网公司 | Without bus compact protective relaying device |
| CN204633466U (en) * | 2015-03-19 | 2015-09-09 | 南京南瑞继保电气有限公司 | A kind of protection telemetry communication integrated apparatus |
| CN105576620A (en) * | 2015-12-30 | 2016-05-11 | 中国南方电网有限责任公司电网技术研究中心 | Microcomputer protection device |
-
2016
- 2016-10-31 CN CN201610927533.3A patent/CN106505510B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204497713U (en) * | 2015-01-09 | 2015-07-22 | 国家电网公司 | Without bus compact protective relaying device |
| CN204633466U (en) * | 2015-03-19 | 2015-09-09 | 南京南瑞继保电气有限公司 | A kind of protection telemetry communication integrated apparatus |
| CN105576620A (en) * | 2015-12-30 | 2016-05-11 | 中国南方电网有限责任公司电网技术研究中心 | Microcomputer protection device |
Non-Patent Citations (3)
| Title |
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| 保护测控一体化装置的研制;张春合等;《电工技术》;20120930(第9期);65-66,68 |
| 多核处理器在中低压保护测控一体化装置中的应用;周华良等;《电力系统自动化》;20111225;第35卷(第24期);84-88 |
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