CN106527214B - Intelligent transformer type electronic controller duplicate system retrofit method - Google Patents
Intelligent transformer type electronic controller duplicate system retrofit method Download PDFInfo
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- CN106527214B CN106527214B CN201510582834.2A CN201510582834A CN106527214B CN 106527214 B CN106527214 B CN 106527214B CN 201510582834 A CN201510582834 A CN 201510582834A CN 106527214 B CN106527214 B CN 106527214B
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- controller
- cooler
- electronic controller
- effective
- transformer
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Abstract
Intelligent transformer type electronic controller duplicate system retrofit method of the present invention, comprising the following steps: control box compares the cooler control output signal of two electronic controllers, and the electronic controller for selecting output group number most is as effective controller；The operating parameter that two electronic controllers acquire transformer respectively obtains the cooler number X that should start, while acquiring current cooler starting number N；Cooler is started or stoped by the comparison of X and N.The present invention is independently run in the reciprocity redundant configuration for truly realizing two controllers, two covering devices, and control box, which can automatically select, exports optimal device output, does not need to switch, the operation of system undisturbed is realized in any controller failure.The integrality for guaranteeing system function, also omits communication process, improves the reliability of system.
Description
Technical field
The present invention relates to a kind of intelligent transformer electronic controller duplicate system retrofit methods, become for the extra-high voltage direct-current change of current
Power transformer product, to ensure that the change of current gets higher the reliable and stable operation of low side.
Background technique
Converter power transformer is sending end AC power power to be transmitted to rectifier, or receive power from inverter and be sent to
Receiving end AC electric power systems needs the operation shape to converter power transformer entirety to guarantee the normal operation of converter power transformer
State is monitored and is controlled, and the considerations of for safety, reliability and economy, needs the fortune using some devices exchange rheology
Row is monitored and controlled, it is ensured that change of current change safely and reliably works.
The service life of transformer is mainly influenced by longtime running temperature at present, and existing intelligent transformer electronic controller is logical
The real-time parameter for crossing acquisition transformer station high-voltage side bus can carry out corresponding by calculating and logic judgment for different operating statuses
Control, for example transformer temperature rise more starts air-cooled control in limited time automatically, increases cooler operation group number, it is ensured that transformer station high-voltage side bus
Temperature is in normal range (NR).It is also possible to collected data be uploaded to monitoring unified platform, convenient for monitoring operations staff
Understand in the operating status remotely for transformer, operations staff is also supported to carry out forcing to throw in the distance moving back cooler.
As shown in Figure 1, conventional active and standby formula duplicate system retrofit scheme often uses main backup Redundancy mode, two sets of transformers
Intelligent electronic controller one leads a received shipment row, and a device is main equipment, is responsible for carrying out running state of transformer monitoring and wind
Cold control, in addition a device is as spare, when main equipment breaks down, stand-by provision be switched to main equipment to transformer into
Row Stateful Inspection and air-cooled control.
But the scheme of this standby usage has three:
Active and standby dual scheme is not that two equipment are run on an equal basis, and are divided into activestandby state, the meeting among handoff procedure
Having time interval can generate disturbance to control object such as oil pump and fan when switching.
Active and standby dual scheme needs communication and status between master/slave device synchronous, may cause when communicating and breaking down
Handover failure, or even mistake switching.
The relay outlet of the main equipment and backup device of active and standby dual scheme is the oil being connected in parallel to transformer
Pump and blower are controlled, when controller, which exports, to break down it is possible that by the control signal lock of control oil pump or blower
Dead situation loses redundant ability so as to cause whole system.
Summary of the invention
Insufficient in view of the above technology, the object of the present invention is to provide a kind of intelligent transformer type electronic controller duals to match
Method is set, this method can be improved the Stateful Inspection to extra-high voltage transformer and the reliability of air-cooled control.
The technical solution adopted by the present invention to solve the technical problems is: intelligent transformer type electronic controller dual is matched
Set method, comprising the following steps:
1) it is independently run for controlling two electronic controllers of transformer, control box compares two electronic controllers
Cooler control output signal, the electronic controller for selecting output group number most is as effective controller, i.e. the controller
Output is arbitrated as control box output signal；
2) operating parameter that two electronic controllers acquire transformer respectively obtains the cooler number X that should start, simultaneously
Acquire current cooler starting number N；
If the cooler number X that should start, which is greater than current cooler, starts number N:
If 2-1) currently running electronic controller is effective controller, start X-N group cooler；
If 2-2) currently running electronic controller is not effective controller, the electronic controller of opposite side is waited to start
Cooler heel is acted from opposite side electronic controller, i.e., is consistent with opposite side controller output signal；If waiting time-out
Request control box, which sets this side electronic controller, becomes effective controller, and return step 2-1)；
If the cooler number X that should start, which is less than current cooler, starts number N:
If 2-3) currently running electronic controller is effective controller, stop N-X group cooler；
If 2-4) currently running electronic controller is not effective controller, kept with opposite side controller output signal
Unanimously；
If the cooler number X that should start, which is equal to current cooler, starts number N, current cooler state is kept.
The operating parameter that described two electronic controllers acquire transformer respectively obtains the cooler number that system should start
The following steps are included:
The operating parameter of each electronic controller acquisition transformer is compared with the operating parameter Grads threshold of setting；If fortune
Row parameter >=threshold value then starts or stops the corresponding cooler number of the threshold value；Otherwise, existing output is kept.
The operating parameter includes temperature of oil in transformer, winding temperature, transformer load.
It is described follow opposite side electronic controller movement the following steps are included:
Effective controller output sets 1 cooler adjustment signal to control box, and control box forwards this signal to opposite side electronics
Controller makes it be failure to actuate；It is 0 that cooler adjustment signal is then set after effective controller action, has followed opposite side electronic controller
Imitate controller action.
Requesting control box to set this side electronic controller if waiting time-out is effective controller, comprising the following steps:
If the cooler tune that the effective controller in opposite side issues still is not detected in this side electronic controller after setting time
Entire signal, then the cooler adjustment signal that output sets 1 requests this side to become effective controller to control box, and starts detection operation
Case is dealt into the controller useful signal of this side electronic controller；
If detecting controller useful signal, indicate that this side controller is arbitrated as effective controller, then return step
2-1)；If controller useful signal is not detected in this side electronic controller within the set time, it is effective that expression, which is not arbitrated,
Controller, then return step 2-2).
The invention has the following beneficial effects and advantage:
1. the present invention is in the reciprocity redundant configuration for truly realizing two controllers, two covering devices are independently transported
Row, control box, which can automatically select, exports optimal device output, does not need to switch, realize in any controller failure
The operation of system undisturbed.
2. control box arbitration function of the invention does not need to communicate between two controllers, but directly by differentiating control
The discharge state of device carries out system optimal arbitration, both ensure that the integrality of system function, and had also omited communication process, and had improved
The reliability of system.
3. the design of control box is designed using FPGA programmable logic array, software logic judgement is eliminated, is not only protected
The functional reliability of control box is demonstrate,proved, while the relay outlet for avoiding two covering devices is directly in parallel, has prevented a control
Device failure and caused by signal deadlock and cause system redundancy function to exit.
4. the present invention separately carries out state to extra-high voltage transformer using two sets of intelligent transformer electronic controllers
Monitoring and air-cooled control, when any a set of controller breaks down, other set controller can directly replace work.
5. the present invention is using active and standby plus competition compared with traditional realization duplicate system retrofit scheme using main backup Redundancy
Redundancy scheme, two covering devices independently carry out Stateful Inspection and air-cooled control to extra-high voltage transformer, and outlet passes through one
Control box realizes that the control to transformer oil pump and blower operates, and can truly realize duplicate system retrofit in this way, also can
Successfully avoid because any intelligent transformer electronic controller failure and caused by oil pump or air-blower control exported into locked shape
Condition improves its reliability.
6. intelligent transformer electronic controller of the invention is in identical control definite value, to the operation number of transformer
It according to respective analysis, respectively controls, both guarantees the independence of operation, in turn ensure information sharing (such as control is forced in a distant place), in this way
Ensure the oil pump of transformer and the reliability of air-blower control, so that any a set of equipment is broken down, it is cold transformer will not to be influenced
But the control of device.Intelligent transformer electronic controller is in control process, in the case where two sets of equipment running status are inconsistent,
It is executed according to optimal control program.
Detailed description of the invention
Fig. 1 is active and standby formula duplicate system retrofit conceptual scheme；
Fig. 2 is peer-to-peer duplicate system retrofit conceptual scheme；
Fig. 3 is controller calculating logic figure.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments.
The control object of intelligent transformer electronic controller is extra-high voltage transformer, is directly related to extra-high voltage transformer
Stable operation reliably and with long-term, in order to improve transformer electronic controller to the validity and wind of the Stateful Inspection of extra-high voltage transformer
The reliability of cold control, it is consistent with the duplicate system retrofit of intelligent electronic controller that the present invention is able to maintain monitoring system backstage.
The present invention is connected to a control box between existing convergence control cabinet and two controllers, and convergence control cabinet passes through control box
It is connect with two controllers.Intelligent electronic controller is can to acquire transformer station high-voltage side bus parameter, is analyzed the data of acquisition,
And a kind of device that transformer station high-voltage side bus is accordingly controlled according to the result of analysis.Control box includes cabinet and internal setting
Control panel, control panel is equipped with FPGA, receives the control output information from two controllers of operation simultaneously, and is patrolled
Judgement and output selection are collected, sends and determining control is selected to export to convergence control cabinet.
Since the oil pump and fan of transformer only have a set of, the convergence control cabinet of control oil pump and fan is also only a set of how
Realize two sets of independent intelligent transformer electronic controllers to the respective independent control of same set of oil pump and fan just at transformation
The key point that device intelligent electronic controller duplicate system retrofit scheme is realized.The present invention uses active and standby plus competition redundancy scheme,
Two covering devices while independent operating, realize redundancy in control logic, and the relay outlet of two covering devices passes through a convergence control cabinet
It is connected on transformer oil pump and air-blower control relay.
The present invention is that two covering devices are independently run, and the outlet of two covering devices carries out signal arbitration by a control box
And merging treatment, to realize that the control to transformer oil pump and blower operates.
One, cooler start and stop logic
Each controller can 4 groups of cooler groups of independent control (every group includes a fan and an oil pump), control
Device is by the operating parameter such as oil temperature, winding temperature and load etc. of acquisition transformer according to IEC 60076-7 (2005) and GB/T
1094.7-2008 oil-immersed power transformer loads the temperature rising state and hot spot of the regulation formula calculating transformer in directive/guide, it
It is calculated according to transformer state criterion afterwards to guarantee that transformer temperature is maintained at normal range (NR) and should start how many groups of coolers
(specific output is 4 group relay discharge states, and different conditions correspond to starting or stoping for every group of fan and oil pump).
Specific start and stop logic is as follows:
Transformer at least starts one group of cooler after putting into operation, carry out by top oil, winding temperature, transformer load logic
Start and stop cooler；
The Grads threshold of temperature of oil in transformer, winding temperature, transformer load is respectively set；
Start and stop cooler is carried out according to the Grads threshold of the temperature of oil in transformer of acquisition, winding temperature, transformer load.Specifically
It is shown in Table one.
Table one
Two, arbitrated logic principle
As shown in Fig. 2, control box receives two independent controller outputs as a result, since cooler starting group number is got over simultaneously
The cooling effect of multipair transformer is better, more advantageous to transformer station high-voltage side bus, thus control box receive two it is independently operated
After controller exports result, first confiring that controller operating status is effective, i.e. controller self-test is in unfaulty conditions, if two
The controller that a controller all effectively then selects outlet group number most by logic judgment is as effective output, to guarantee always
The outlet output optimal to transformer control effect.
Arbitrated logic is manually controlled to the pressure start stop command assigned from background system and guarded command and on the spot simultaneously
Order has all carried out filtration treatment, that is, forces corresponding cooler start and stop state, is guaranteeing the same of automatic control function optimal selection
When do not influence force control command execution.That is, when receiving the pressure start stop command that background system is assigned, then directly
Control corresponding cooler group start and stop；When receiving guarded command, then directly stop all cooler groups.
Specific arbitrated logic is as follows:
When operation, two controllers (this side A and opposite side B) are independently run, when two controllers are all effective, i.e. device
All self-test fault-free when, the control box as arbitration organ can compare two controllers cooler control output signal, selection
For the most controller of output group number as effective controller, detailed process is as shown in Figure 3.
The operating parameter such as oil temperature, winding temperature and load gauge calculation system that controller acquires transformer respectively should start or
The cooler number " X " of stopping, while acquiring current cooler starting number " N ".
If the X that controller is calculated is greater than N, and this controller is effective o controller of control box selection,
It is defeated can to start adjustment cooler start and stop according to the cooler start and stop number and collected cooler start and stop state being calculated
Signal out, while exporting " cooler adjustment signal " (set 1) for indicating that the adjustment operation of this side cooler has started and arriving control box,
It is then returned to the end of start and stop adjust process, indicates " cooler adjustment signal " (clear position that the adjustment operation of this side cooler has terminated
0).In entire adjustment process, side controller is in and follows state, is i.e. holding output signal and collected cooler start and stop
State is consistent with this side controller.
When the controller detects that itself not being effective o controller of control box selection, while the cooling being calculated
Device starting number is more than collected cooler starting number, first waits and adjusting to side controller, if do not examined yet after 2 minutes
" the cooler adjustment return signal " for measuring opposite side then exports " the cooler adjustment for indicating this side request adjustment cooler number
Signal " (set 1) is to control box and detects this side controller useful signal, if detecting this signal is set 1, then it represents that this side
For effective controller and start start cooler be adjusted, adjustment process terminates, and returns to " cooler adjustment signal " (clear position
0) indicate that the adjustment operation of this side cooler has terminated to control box.If this side controller is invalid always, opposite side is detected
" cooler adjustment return signal " returns to " cooler adjustment signal " (clear position 0) to control box afterwards indicates this side adjustment cooler
Request has terminated.
When two controllers are all invalid, i.e. self-check of device failure, then control box all sets cooler control output signal
It is 1, i.e. all startings guarantee transformer safety operation.
If when the inspection and effective adjustment signal of controller, cooler control output signal is all set to by control box
Select the control output state of effective controller.
Control box handles two Remote protections sent from background monitoring system simultaneously and cuts signal, forces to throw and moves back cooler letter
Number and manual throw of local convergence control cabinet move back cooler signal.
When from Remote protection cut signal have one for it is effective when, then control box by cooler control output signal be all set to
0, i.e., it all exits, guarantees no longer cooling when tranformer protection excision.
When the manual throwing bounce number of convergence control cabinet is effective, then cooler control output signal is all set to 0 by control box, i.e.,
It all exits, forces to throw by the manual switch of convergence control cabinet and move back cooler.
When the distant place forced signal of background monitoring system is effective, then control box all sets cooler control output signal
For the distant place forced regime for monitoring backstage.
Claims (5)
1. intelligent transformer type electronic controller duplicate system retrofit method, it is characterised in that the following steps are included:
Two electronic controllers for controlling transformer are independently run, and control box compares the cooling of two electronic controllers
Device controls output signal, and the electronic controller for selecting output group number most is as effective controller, i.e. the output quilt of the controller
Arbitration is control box output signal:
The operating parameter that two electronic controllers acquire transformer respectively obtains the cooler number X that should start, while acquisition is worked as
Preceding cooler starts number N；
If the cooler number X that should start, which is greater than current cooler, starts number N:
If 2-1) currently running electronic controller is effective controller, start X-N group cooler；
If 2-2) currently running electronic controller is not effective controller, the electronic controller of opposite side is waited to start cooling
Device heel is acted from opposite side electronic controller, i.e., is consistent with opposite side controller output signal；It is requested if waiting time-out
Control box, which sets this side electronic controller, becomes effective controller, and return step 2-1)；
If the cooler number X that should start, which is less than current cooler, starts number N:
If 2-3) currently running electronic controller is effective controller, stop N-X group cooler；
If 2-4) currently running electronic controller is not effective controller, one is kept with opposite side controller output signal
It causes；
If the cooler number X that should start, which is equal to current cooler, starts number N, current cooler state is kept.
2. intelligent transformer type electronic controller duplicate system retrofit method according to claim 1, it is characterised in that described
The operating parameter that two electronic controllers acquire transformer respectively obtain the cooler number that system should start the following steps are included:
The operating parameter of each electronic controller acquisition transformer is compared with the operating parameter Grads threshold of setting；If operation ginseng
Number >=threshold value then starts or stops the corresponding cooler number of the threshold value；Otherwise, existing output is kept.
3. intelligent transformer type electronic controller duplicate system retrofit method according to claim 1, it is characterised in that described
Operating parameter includes temperature of oil in transformer, winding temperature, transformer load.
4. intelligent transformer type electronic controller duplicate system retrofit method according to claim 1, it is characterised in that described
Follow opposite side electronic controller movement the following steps are included:
Effective controller output sets 1 cooler adjustment signal to control box, and control box forwards this signal to opposite side and is controlled electronically
Device makes it be failure to actuate；It is 0 that cooler adjustment signal is then set after effective controller action, and opposite side electronic controller is made to follow effective control
Device movement processed.
5. intelligent transformer type electronic controller duplicate system retrofit method according to claim 1, it is characterised in that if
Waiting time-out that control box is then requested to set this side electronic controller is effective controller, comprising the following steps:
If the cooler adjustment letter that the effective controller in opposite side issues still is not detected in this side electronic controller after setting time
Number, then the cooler adjustment signal that output sets 1 requests this side to become effective controller to control box, and starts to detect control box hair
To the controller useful signal of this side electronic controller；
If detecting controller useful signal, indicate that this side controller is arbitrated as effective controller, then return step 2-1)；
If controller useful signal is not detected in this side electronic controller within the set time, expression is not arbitrated effectively to control
Device, then return step 2-2).
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| CN106527214B true CN106527214B (en) | 2019-02-01 |
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| CN107643722B (en) * | 2017-11-06 | 2024-04-05 | 南京力通达电气技术有限公司 | Redundancy control method for extra-high voltage converter transformer cooler |
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|---|---|---|---|---|
| JPH1132482A (en) * | 1997-07-09 | 1999-02-02 | Toshiba Corp | Power conversion device |
| US7069109B2 (en) * | 2004-11-09 | 2006-06-27 | E.G.O. North America, Inc. | Systems and methods of using multiple microcontrollers for fail-safe control and enhanced feature operation of an appliance |
| 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 |
| CN201322859Y (en) * | 2008-10-08 | 2009-10-07 | 国网运行有限公司上海超高压管理处 | Cooling control system of converter valve |
| CN101634866A (en) * | 2009-02-10 | 2010-01-27 | 广州市高澜水技术有限公司 | Control system of pure water cooling device of high voltage direct current (HVDC) transmission converter valve |
| CN202102282U (en) * | 2011-01-06 | 2012-01-04 | 浙江省电力公司 | Monitoring and controlling device for cooler of transformer |
-
2015
- 2015-09-14 CN CN201510582834.2A patent/CN106527214B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1132482A (en) * | 1997-07-09 | 1999-02-02 | Toshiba Corp | Power conversion device |
| US7069109B2 (en) * | 2004-11-09 | 2006-06-27 | E.G.O. North America, Inc. | Systems and methods of using multiple microcontrollers for fail-safe control and enhanced feature operation of an appliance |
| 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 |
| CN201322859Y (en) * | 2008-10-08 | 2009-10-07 | 国网运行有限公司上海超高压管理处 | Cooling control system of converter valve |
| CN101634866A (en) * | 2009-02-10 | 2010-01-27 | 广州市高澜水技术有限公司 | Control system of pure water cooling device of high voltage direct current (HVDC) transmission converter valve |
| CN202102282U (en) * | 2011-01-06 | 2012-01-04 | 浙江省电力公司 | Monitoring and controlling device for cooler of transformer |
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Address after: 110025 No. 32, Kaifa Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: TBEA Smart Energy Co.,Ltd. Address before: 110025 No. 32, Kaifa Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee before: SIFANG TBEA INTELLIGENT ELECTRIC CO.,LTD. |
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