CN205880638U - Improve device of decentralized control system main protection project input security - Google Patents
Improve device of decentralized control system main protection project input security Download PDFInfo
- Publication number
- CN205880638U CN205880638U CN201620799058.1U CN201620799058U CN205880638U CN 205880638 U CN205880638 U CN 205880638U CN 201620799058 U CN201620799058 U CN 201620799058U CN 205880638 U CN205880638 U CN 205880638U
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- China
- Prior art keywords
- protection
- circuit
- input
- triggers
- control system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model discloses an improve device of decentralized control system main protection project input security, including pulse of protection exit instruction and protection input start pulse, wherein, the device still includes a RS flip -flop circuit, first dual input AND circuit, second dual input AND circuit and a not circuit, the utility model discloses can carry out the state to the coherent signal of decentralized control system main protection and discern, the suggestion protection drops into the state that perhaps withdraws from to whether allow to drop into this protection according to main guard signal state judgement, improve security and the reliability of decentralized control system main protection project when dropping into again after relieving, prevent to cause equipment or even unit to trip unusually because of this protection project of input of guard signal mistake when triggering the state.
Description
Technical field
This utility model relates to Industry Control, improves scattered control system main protection project particularly to one and puts into safety
The device of property.
Background technology
Along with the progress of science and technology, industrial stokehold especially power generation process controls to be rapidly developed, dispersion control
System processed (DCS) is used widely in industries such as electric power, chemical industry, cement, become each process of factory production " brain " and
" eyes ", are effectively increased the safety of relevant industries production, stability, economy, promote the realization of energy-conserving and environment-protective target.
DCS system mainly has data acquisition, sequential control, interlock protection, the major function such as is automatically adjusted, and wherein interlocks
Protection is to ensure that the key function of main equipment safety.This function is by accessing the on-site signal that data collecting system is accepted, warp
Crossing logical operations and judgement, output main protection actuating signal is to each relevant device so that it is generation in time is interlocked action accordingly,
Ensure the safety of equipment and unit.
And the on-site signal that data collecting system is introduced, due to measurement apparatus duty, stable signal transmission etc.
The problem that aspect exists, may cause signal to occur abnormal, further results in relevant main protection project and sends the protection of mistake
Action command, even equipment and unit tripping.By works engineer, this protection project must be moved back in this case
Go out to run, carry out maintenance.After there is abnormal protection signal inspection, works engineer then should will protect item again
Mesh puts into operation.Owing to protection act instruction direct relation the operating state of all relevant devices, to unit and equipment safety
Have a direct impact, it is therefore necessary to be ensured of at protection signal completely normal, and be under non-triggering situation and put into this protection project,
Preventing from, because protection signal occurs exception again, once protection being put into, system i.e. sends the protection act instruction of mistake, such
Accident case is the most of common occurrence, and the economy and the social loss that cause are surprising.Therefore must protect in scattered control system
Protecting to put into arrange according to the state protecting signal in function prevents mistake from putting into protection item destination device.
Summary of the invention
The purpose of this utility model is to propose a kind of scattered control system main protection project that improves to put into the device of safety.
To achieve these goals, the technical solution of the utility model is:
A kind of improve scattered control system main protection project put into safety device, including protection exit instruction pulse and
Protection put into command pulse, wherein, described device also include a rest-set flip-flop circuit, the first dual input AND circuit, second
Dual input AND circuit and a not circuit, described exit instruction pulse connects the S of rest-set flip-flop circuit and triggers end, and S touches
Trigger protection of making a start exits end, and described protection puts into command pulse and connects an input of the first dual input AND circuit, the
Another input of one dual input AND circuit connects the output of not circuit, and the output of the first dual input AND circuit connects
The R of rest-set flip-flop circuit triggers end, and R triggers end trigger protection and puts into end, and the input of not circuit connects main protection operating state
Signal, described main protection operating state signal is simultaneously connected with an input of the second dual input AND circuit, the second dual input
Another input of AND circuit connects R and triggers the protection input end that end triggers, and the second dual input AND circuit outfan is defeated
Go out protection act output order.
Scheme is further: described S triggers end trigger protection and exits end and connect a protection and exit display lamp, is used for showing
Protection is exited；Described R triggers end trigger protection and puts into one protection input display lamp of end connection, is used for showing that protection puts into；Institute
The output stating not circuit connects a protection permission input display lamp, for showing the state that main protection action is current.
The beneficial effects of the utility model are:
This utility model is that a kind of scattered control system main protection project that improves puts into the device of safety, utilizes this device
The coherent signal of scattered control system main protection is carried out state identification, the state that prompting protection puts into or exits, and according to
Main protection signal condition determines whether to put into this protection, improves scattered control system main protection project after releasing again
Safety and reliability during input, prevents from, because of this protection project of input of mistake when protection signal is triggering state, causing
The abnormal tripping operation of equipment even unit.
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Detailed description of the invention
A kind of scattered control system main protection project that improves puts into the device of safety, including protection exit instruction pulse 1
With protection put into command pulse 2, wherein, described device also include a rest-set flip-flop circuit the 3, first dual input AND circuit 4,
Second dual input AND circuit 5 and a not circuit (phase inverter) 6, described exit instruction pulse connects rest-set flip-flop circuit
S trigger end, S triggers end trigger protection and exits end 301, and described protection puts into command pulse and connects the first dual input AND circuit
An input, another input of the first dual input AND circuit connects the output of not circuit, the first dual input with
The output of gate circuit connects the R of rest-set flip-flop circuit and triggers end, and R triggers end trigger protection and puts into end 302, the input of not circuit
Connecting main protection operating state signal 7, described main protection operating state signal is simultaneously connected with the one of the second dual input AND circuit
Individual input, another input of the second dual input AND circuit connects R and triggers the protection input end that end triggers, the second lose-lose
Enter AND circuit outfan output protection action output order 8.
In embodiment: described S triggering end trigger protection exits end one protection of connection and exits display lamp (or picture) 9, uses
Exit in display protection；Described R triggers end trigger protection and puts into one protection input display lamp (or picture) 10 of end connection, is used for
Display protection puts into；The output of described not circuit connects a protection and allows to put into display lamp (or picture) 11, is used for showing
The state that main protection action is current.
In the DCS control system used in the present embodiment reply commercial production, after exiting main protection project, carry out weight
When newly putting into, automatic identification protecting signal condition, is the device preventing from protecting instruction errors to send.He can be one at one solely
Model is led in/out by plugs and sockets, it is also possible to be a part for the control circuit being made in panel on vertical wiring board；
Concrete mode of operation is: main protection operating state signal accesses " non-" module 6, and the output of " non-" module accesses decentralised control system
System picture prompting 11, when this module is output as 1, prompting " protection allows to put into ".The output of " non-" module is simultaneously connected with first
One input of "AND" module 4, the command pulse of " protection puts into " connects another input of "AND" module 1, "AND" module 4
Being connected with the R input of rest-set flip-flop 3, the command pulse of " protection is exited " is connected with the S end of rest-set flip-flop 3.The S of rest-set flip-flop
End and the output of R end are respectively connected to scattered control system picture prompting 9 and 10.When S end is output as 1, point out " protection is exited "；R end
When being output as 1, prompting " protection puts into ".Main protection signal condition accesses an input of the second "AND" module 5, and RS triggers
The R end output of device accesses another input of the second "AND" module 5, when the second "AND" module 5 is output as 1, i.e. exports main protection
Action command.
By the present embodiment, when main protection project is artificially exited, scattered control system picture has information " to be protected
Protect and exit ", even if now the triggering of protection signal is also not result in protection act；When this main protection project needs again to put into,
Device is by the signal condition of automatic identification main protection, and if main protection signal is not for triggering state, scattered control system picture is pointed out
" protection allows to put into ", now this protection project can put into, scattered control system picture prompting " protection puts into " after input；If
Main protection signal is that triggering state then this protection project cannot put into.Namely: if protection signal is triggering state, decentralised control
System " protection allows to put into " blackout, sends even if now protection puts into instruction, and this protection project also cannot put into, protection
Action command cannot send, until protection signal change is not for trigger state, this protection could put into again.Guaranteeing will not be because of
Protection signal is under triggering state, careless this protection project of input and cause main protection action command mistake to send.
Claims (2)
1. improve scattered control system main protection project and put into a device for safety, including protection exit instruction pulse and guarantor
Protect input command pulse, it is characterised in that described device also include a rest-set flip-flop circuit, the first dual input AND circuit,
Second dual input AND circuit and a not circuit, described exit instruction pulse connects the S of rest-set flip-flop circuit and triggers end,
S triggers end trigger protection and exits end, and described protection puts into command pulse and connects an input of the first dual input AND circuit,
Another input of first dual input AND circuit connects the output of not circuit, and the output of the first dual input AND circuit is even
The R connecing rest-set flip-flop circuit triggers end, and R triggers end trigger protection and puts into end, and the input of not circuit connects main protection action shape
State signal, described main protection operating state signal is simultaneously connected with an input of the second dual input AND circuit, the second lose-lose
Another input entering AND circuit connects the protection input end that R triggering end triggers, the second dual input AND circuit outfan
Output protection action output order.
Device the most according to claim 1, it is characterised in that described S triggers end trigger protection and exits end one guarantor of connection
Protect and exit display lamp, be used for showing that protection is exited；Described R triggers end trigger protection and puts into one protection input display of end connection
Lamp, is used for showing that protection puts into；The output of described not circuit connects a protection and allows to put into display lamp, is used for showing main guarantor
Protect the state that action is current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799058.1U CN205880638U (en) | 2016-07-28 | 2016-07-28 | Improve device of decentralized control system main protection project input security |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799058.1U CN205880638U (en) | 2016-07-28 | 2016-07-28 | Improve device of decentralized control system main protection project input security |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205880638U true CN205880638U (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620799058.1U Expired - Fee Related CN205880638U (en) | 2016-07-28 | 2016-07-28 | Improve device of decentralized control system main protection project input security |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205880638U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345279A (en) * | 2018-01-29 | 2018-07-31 | 华润电力（海丰）有限公司 | One kind preventing DCS system control logic protection accidentally input coefficient |
| CN112083643A (en) * | 2020-09-29 | 2020-12-15 | 华润电力（菏泽）有限公司 | Thermal protection switching method and device for thermal power plant |
-
2016
- 2016-07-28 CN CN201620799058.1U patent/CN205880638U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345279A (en) * | 2018-01-29 | 2018-07-31 | 华润电力（海丰）有限公司 | One kind preventing DCS system control logic protection accidentally input coefficient |
| CN108345279B (en) * | 2018-01-29 | 2019-09-03 | 华润电力（海丰）有限公司 | One kind preventing DCS system control logic protection accidentally input coefficient |
| CN112083643A (en) * | 2020-09-29 | 2020-12-15 | 华润电力（菏泽）有限公司 | Thermal protection switching method and device for thermal power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20180728 |