CN203301225U - Control device based on security-section interlocking self-switchover of gas-steam combined unit - Google Patents
Control device based on security-section interlocking self-switchover of gas-steam combined unit Download PDFInfo
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- CN203301225U CN203301225U CN2013203133538U CN201320313353U CN203301225U CN 203301225 U CN203301225 U CN 203301225U CN 2013203133538 U CN2013203133538 U CN 2013203133538U CN 201320313353 U CN201320313353 U CN 201320313353U CN 203301225 U CN203301225 U CN 203301225U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model relates to a control device based on security-section interlocking self-switchover of a gas-steam combined unit. The device comprises a working power supply section, a standby power supply section, a security section, a diesel generator and a distributed control system (DCS). The working power supply section is connected with the first power supply input end of the security section, the standby power supply section is connected with the second power supply input end of the security section, and the power supply output end of the diesel generator is connected with the third power supply input end of the security section. The three control output ends of the distributed control system (DCS) are respectively connected with control input ends of switches of a working power supply, a standby power supply and a diesel engine power supply. The distributed control system (DCS) allows the switches of the working power supply, the standby power supply and the diesel engine power supply to be logically controlled, so that a security-section interlocking switchover power supply structure among the working power supply, the standby power supply and the diesel engine power supply is formed. By using time delay of tuning a relay, the device can adapt to interlocking switchover of the security section under conditions of different loads, so that reliability of security-section interlocking switchover is improved.
Description
Technical field:
The utility model relates to a control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking, and the security personnel's section that is applicable to improve 9F level gas-steam combined unit is hauled oneself willingly into control, belongs to generating equipment and control technology field.
Background technology:
At present, the dynamo-electric factory of large-scale combustion belongs to new type enterprise in China, for its design, installation China, does not have mature experience, and the design and installation of a lot of auxiliary devices is all to carry out with reference to traditional coal-burning power plant.9F level gas-steam combined unit is the Mitsubishi generating set of domestic introduction, and wherein station-service security personnel section interlocking switch logic has just directly adopted the general design in coal-burning power plant.And security personnel's section is the vital power supply section that guarantees that unit safety is shut down.
Now in technology, adopted the general following problem of the normal appearance of security personnel's section interlocking handoff procedure in coal-burning power plant: (1) is due to security personnel's section load and property difference, after the coasting operation of security personnel section power failure motor, often switch unsuccessfully, to unit safety operation, bring major safety risks; When (2) security personnel's section is sent a telegram here; though working power and stand-by power supply can not close a floodgate simultaneously; but increased the time delay of 0.5 second while switching to stand-by power supply by working power under normal operating mode, caused security personnel's section dead electricity time elongated, be unfavorable for the safety when unit failure is shut down.
Therefore,, there is problems such as controlling unstable and potential safety hazard in the gas-steam combined unit of prior art security personnel section interlocked control, is the problem that solution is needed in power plant badly.
The utility model content:
The purpose of this utility model, be in order to solve the unsettled problem of present technology gas-steam combined unit security personnel section interlocked control, and a kind of control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking is provided.
The purpose of this utility model can reach by taking following technical scheme:
Control device based on gas-steam combined unit security personnel section interlocking is hauled oneself willingly into, comprise working power section, stand-by power supply section, security personnel's section, diesel engine generator and Distributed Control System DCS; The working power section connects one of power input of security personnel's section by the working power switch, the stand-by power supply section connect by Backup Power Switch security personnel section power input two, the power output end of diesel engine generator connect by the diesel oil mains switch security personnel's section power input three, form the electric power-feeding structure of three tunnels to security personnel's section; Three control output ends of Distributed Control System DCS connect respectively the control input end of working power switch, Backup Power Switch and diesel oil mains switch,, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, form interlocking switching security personnel section energy supply structure between working power, stand-by power supply and diesel engine power supply by Distributed Control System DCS.
The purpose of this utility model can also reach by taking following technical scheme:
Further, the working power switch consists of working power service entrance switch 412A and power outlet switch 411E, Backup Power Switch consists of stand-by power supply service entrance switch 412B and stand-by power supply outlet switch 412E, and the diesel oil mains switch consists of diesel oil electric power incoming line switch 041E; The working power section connects one of power input of security personnel's section by working power service entrance switch 412A, working power outlet switch 411E, the stand-by power supply section connect by stand-by power supply service entrance switch 412B, stand-by power supply outlet switch 412E security personnel's section power input two, the power output end of diesel engine generator connect by diesel oil electric power incoming line switch 041E security personnel's section power input three; The control logic of setting by Distributed Control System DCS, to working power service entrance switch 412A and working power outlet switch 411E, stand-by power supply service entrance switch 412B and stand-by power supply outlet switch 412E, the diesel oil electric power incoming line switch 041E switching controls of interlocking.
Further, described working power, stand-by power supply and diesel engine generator power output end adopt parallel way to be connected to the power input of security personnel's section, control logic by Distributed Control System DCS setting, in the time in office, a kind of power supply in maintenance work power section, stand-by power supply section and diesel generation electromechanical source is security personnel's section, described three kinds of power supplys to the power supply order of security personnel section be that the working power section is preferential, the stand-by power supply section secondly, automatically switch to the diesel engine generator power supply when the two kinds of abnormity of power supply in front, prevent that power supply from clashing.
Further, setting described working power service entrance switch 412A combined floodgate and closed a floodgate fast 0.5 second than stand-by power supply service entrance switch 412B, guarantee when working power is normal, is the power supply of security personnel's section by the working power section.
Further, after working power service entrance switch 412A, stand-by power supply service entrance switch 412B separating brake, time delay 2.5 seconds, diesel oil electric power incoming line switch 041E closes a floodgate, and guarantees in working power section and stand-by power supply section when abnormal, by diesel engine generator, to be just the power supply of security personnel's section.
Further, described working power outlet switch 412A and stand-by power supply outlet switch 412B are for detecting trip switch, when working power section, tripping operation when the stand-by power supply section is abnormal.
The utlity model has following outstanding beneficial effect:
1, the utility model is improved to relay with time delay by the relay with diesel engine generator self-starting instantaneous operation, can adapt to by the time delay of the relay of adjusting the interlocking switching under the different load condition of security personnel's section, thereby improve the reliability of security personnel's section interlocking switching.
2, the utility model is improved to relay with time delay by the relay with diesel engine self-starting instantaneous operation; its time can by under two kinds of typical way when unit is normally moved and while shutting down during actual measurement security personnel section bus loss of pressure voltage curve adjust; determined by different gas-steam combined units; its basic principle is guaranteeing under the reliable prerequisite of switching, and is short as far as possible.
3, the utility model improves the logical condition of interlocking switching according to operational mode, when meeting the switching reliability, shortens switching time, reduces security personnel's section interruption duration.
4, the utility model carries out security control by the switching to security personnel's section, and is simple in structure, easy to operate, greatly improved the fail safe of associating unit operation.Adjust the delay time of diesel engine power supply service entrance switch according to the difference of load, guarantee that the priority of security personnel's section power devices power supply is working power-stand-by power supply-diesel engine power supply, greatly improved the reliability of security personnel's section interlocking switching.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of control device that relates to of utility model.
Fig. 2 is the diesel engine start-stop control principle drawing of the utility model unit.
Fig. 3 is switch interlock logic control principle of the present utility model.
Embodiment:
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Specific embodiment 1:
Fig. 1, Fig. 2 and Fig. 3 form specific embodiment of the utility model 1.
With reference to Fig. 1, the present embodiment comprises working power section 1, stand-by power supply section 2, security personnel's section 3, diesel engine generator 4 and Distributed Control System DCS; Working power section 1 connects one of power input of security personnel's section 3 by the working power switch, stand-by power supply section 2 connect by Backup Power Switch security personnel section 3 power input two, the power output end of diesel engine generator 4 connect by the diesel oil mains switch security personnel's section 3 power input three, form the electric power-feeding structure of three tunnels to security personnel's section 3; Three control output ends of Distributed Control System DCS connect respectively the control input end of working power switch, Backup Power Switch and diesel oil mains switch,, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, form interlocking switching security personnel section energy supply structure between working power, stand-by power supply and diesel engine power supply by Distributed Control System DCS.
With reference to Fig. 2, k1-stops diesel engine relay (use normally-closed contact), and k2-starts diesel engine relay (use normally opened contact), k11-411E switch auxiliary contact, k12-412E switch auxiliary contact machine.K13-manually boots the diesel engine contact.
In the present embodiment:
The working power switch consists of working power service entrance switch 412A and power outlet switch 411E, and Backup Power Switch consists of stand-by power supply service entrance switch 412B and stand-by power supply outlet switch 412E, and the diesel oil mains switch consists of diesel oil electric power incoming line switch 041E; Working power section 1 connects one of power input of security personnel's section 3 by working power service entrance switch 412A, working power outlet switch 411E, stand-by power supply section 2 connect by stand-by power supply service entrance switch 412B, stand-by power supply outlet switch 412E security personnel's section 3 power input two, the power output end of diesel engine generator 4 connect by diesel oil electric power incoming line switch 041E security personnel's section 3 power input three; The control logic of setting by Distributed Control System DCS, to working power service entrance switch 412A and working power outlet switch 411E, stand-by power supply service entrance switch 412B and stand-by power supply outlet switch 412E, the diesel oil electric power incoming line switch 041E switching controls of interlocking.
Described working power 1, stand-by power supply 2 and diesel generation electromechanical source 4 outputs adopt parallel way to be connected to the power input of security personnel's section 3, control logic by Distributed Control System DCS setting, in the time in office, a kind of power supply in maintenance work power section 1, stand-by power supply section 2 and diesel generation electromechanical source 4 is security personnel's section 3, described three kinds of power supplys to the power supply order of security personnel section be that working power section 1 is preferential, stand-by power supply section 2 secondly, automatically switch to diesel engine generator 4 power supplies when the two kinds of abnormity of power supply in front, prevent that power supply from clashing.
Set described working power service entrance switch 412A combined floodgate and closed a floodgate fast 0.5 second than stand-by power supply service entrance switch 412B, guarantee when working power is normal, by working power section 1, for security personnel's section 3, powered.
After working power service entrance switch 412A, stand-by power supply service entrance switch 412B separating brake, time delay 2.5 seconds, diesel oil electric power incoming line switch 041E closes a floodgate, and guarantees when abnormal, just by diesel engine generator 4, to be 3 power supplies of security personnel's section in working power section 1 and stand-by power supply section 2.
Described working power outlet switch 412A and stand-by power supply outlet switch 412B are for detecting trip switch, when working power section 1, tripping operation when stand-by power supply section 2 is abnormal.
The control method that the utility model relates to is characterized in that:
1) in the gas-steam combined unit, the current supply circuit of security personnel's section is set to three tunnels, respectively working power, stand-by power supply and diesel engine generator power supply, three control output ends of Distributed Control System DCS connect respectively the control input end of working power switch, Backup Power Switch and diesel oil mains switch,, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, form interlocking switching security personnel section energy supply structure between working power, stand-by power supply and diesel engine power supply by Distributed Control System DCS;
2) utilize the working power of security personnel's section in the gas-steam combined unit, the equal separating brake back contact of the service entrance switch Time delay relay of stand-by power supply to control the startup of diesel engine generator in the gas-steam combined unit, prevent that described diesel engine starting from closing a floodgate with the standby service entrance switch of locking too soon;
3) relay of the diesel engine generator machine self-starting instantaneous operation of gas-steam combined unit is made as relay with time delay, time delay by this relay of adjusting adapts to the interlocking switching under the different load condition of security personnel's section, to improve the reliability of security personnel's section interlocking switching.
Further, step 1) control of diesel engine in the gas-steam combined unit in, improve according to the operational mode of gas-steam combined unit the logical condition that interlocking switches, when meeting the switching reliability, shorten switching time, reduce security personnel's section interruption duration.
Further, step 1), to the switch of working power loop operation, adopt security personnel's section busbar voltage lower than 150 volts, 0.5 second combination switch of time delay in; , to the switch in stand-by power supply loop, adopt security personnel's section busbar voltage lower than 150 volts, 0 second combination switch of time delay.
Further; step 2) in; the delay time of time-delay relay by under two kinds of typical way when unit is normally moved and while shutting down during actual measurement security personnel section bus loss of pressure voltage curve adjust; depending on different gas-steam combined units; its basic principle is guaranteeing under the reliable prerequisite of switching, and is short as far as possible.
Further, in the gas-steam combined unit, the control logic of diesel engine is as follows:
1) after will the section of the security personnel two equal separating brakes of service entrance switch, three machine diesel engine starting relays be made as the band time-delay relay, and delay time is 2.5 seconds, prevent that the standby service entrance switch of the too fast locking of diesel engine starting from closing a floodgate;
2) with security personnel section voltage in the control logic of Distributed Control System DCS lower than 150V after the 2 mains switch time delay of stand-by power supply section cancelled in 0.5 second, working power section 1 mains switch increases the 0.5S time delay, close standby electric power-feeding structure to form normal operating mode by working power section 1 Power supply, stand-by power supply section 2 power supplys, realize the target that shortens security personnel's section dead electricity time and avoid two switches to close a floodgate simultaneously.
Below take #1 unit in applicant's production practices as example, the operation principle of the utility model specific embodiment is described:
As shown in Figure 1, Figure 2 and Figure 3, the present embodiment comprises that work A section 1 is 380V security personnel section and diesel engine generator 4 for 380V power section, work B section 2 for 380V power section, security personnel's section 3; The section 3 of ensuring public security has three-way power to power, and passes through switch 411E power supply by work A section 1 in the time of normally, and after the section dead electricity, the B section 2 of working can be hauled oneself willingly into by switch 412E, and is unsuccessful if 412E closes a floodgate if the 411E tripping is extremely ensured public security, and diesel engine generator 4 self-starting is again powered to the section of ensuring public security.In pilot production, #1 unit security personnel section is by the power supply of 411E switch, and the A grease pump is in operation.The operations staff when doing the test of security personnel section power switch interlock, manual tripping 411E switch, the 412E switch is not hauled oneself willingly into, diesel engine starting, to the power supply of security personnel's section.The test of the security personnel's section of reforming power switch interlock, result of the test is as follows: in A grease pump off-duty situation, 411E switch and 412E switch reciprocal interlocking are normal; Under A grease pump ruuning situation, tripping 411E switch, the 412E switch is hauled oneself willingly into unsuccessful, but tripping 412E switch, the 411E switch can be hauled oneself willingly into.The bright existing emergency power supply of this time production test card is hauled oneself willingly into interlock logic and is not met designing requirement, need improve.
See figures.1.and.2, diesel engine generator 4 starts dual mode, and a kind of is to manually boot (K13), a kind of be the whole separating brakes of 411E and 412E (K11, K12) after,, through K2 time delay (former be designed to instantaneous), automatically start.After diesel engine starting, meeting shipping row normal signal locking 411E and 412E close a floodgate, in case diesel engine starting is hauled oneself willingly into soon than backup circuit breaker, switch can't be hauled oneself willingly into.
When security personnel's section band pump operation, due to the coasting operation of pump, busbar voltage descends slower, and 412E also has little time to close a floodgate, and diesel engine generator 4 just starts, and locking 412E closes a floodgate; When security personnel's section 3 was not with pump operation, busbar voltage descended very fast, and 412E just closes before diesel engine generator 4 starts, and can normally haul oneself willingly into.When preventing security personnel section power transmission, 411E and 412E close a floodgate simultaneously and cause non-synchronization paralleling, do not establish the 0.5S time delay in 411E combined floodgate logic, therefore when 411E cut, 411E closes a floodgate than the fast 0.5S of 412E, and was just fast than diesel engine starting from 412E, therefore 412E hauls oneself willingly into unsuccessful, 411E hauls oneself willingly into can success.
Have precedence over diesel engine starting for guaranteeing that switch is hauled oneself willingly into, need to confirm that the diesel engine starting time delay is longer than switch and hauls oneself willingly into time delay, according to the test situation diesel engine starting time delay of adjusting, namely the K2 definite value is 2.5 seconds.In addition, because the our factory normal operating mode is that 412E is standby by the 411E power supply, the probability of switching is larger from 411E toward 412E, will judge that the 0.5S after security personnel's section busbar voltage＜150V changes to the logic of closing 411E from the logic of closing 412E.
In the gas-steam combined unit, the control logic of diesel engine is as follows:
1) after will the section of the security personnel two equal separating brakes of service entrance switch, three machine diesel engine starting relays be made as the band time-delay relay, and delay time is 2.5S, prevent that the standby service entrance switch of the too fast locking of diesel engine starting from closing a floodgate;
2) with security personnel section voltage in the control logic of Distributed Control System DCS lower than 150V after stand-by power supply section 2 mains switch time delay 0.5S cancel, working power section 1 mains switch increases the 0.5S time delay, close standby electric power-feeding structure to form normal operating mode by working power section 1 Power supply, stand-by power supply section 2 power supplys, realize the target that shortens security personnel's section dead electricity time and avoid two switches to close a floodgate simultaneously.
The above; it is only the better specific embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the scope that the utility model discloses; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, all being belonged to protection range of the present utility model.
Claims (6)
1. the control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking, comprise working power section (1), stand-by power supply section (2), security personnel's sections (3), diesel engine generator (4) and Distributed Control System DCS; Working power section (1) connects one of power input of security personnel's sections (3) by the working power switch, stand-by power supply section (2) connect by Backup Power Switch security personnel section (3) power input two, the power output end of diesel engine generator (4) connect by the diesel oil mains switch security personnel's sections (3) power input three, form the electric power-feeding structure of three tunnels to security personnel's sections (3); Three control output ends of Distributed Control System DCS connect respectively the control input end of working power switch, Backup Power Switch and diesel oil mains switch,, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, form interlocking switching security personnel section energy supply structure between working power, stand-by power supply and diesel engine power supply by Distributed Control System DCS.
2. according to claim 1 based on the gas-steam combined unit security personnel section control device that interlocking is hauled oneself willingly into, it is characterized in that: the working power switch consists of working power service entrance switch 412A and power outlet switch 411E, Backup Power Switch consists of stand-by power supply service entrance switch 412B and stand-by power supply outlet switch 412E, and the diesel oil mains switch consists of diesel oil electric power incoming line switch 041E; Working power section (1) connects one of power input of security personnel's sections (3) by working power service entrance switch 412A, working power outlet switch 411E, stand-by power supply section (2) connect by stand-by power supply service entrance switch 412B, stand-by power supply outlet switch 412E security personnel's sections (3) power input two, the power output end of diesel engine generator (4) connect by diesel oil electric power incoming line switch 041E security personnel's sections (3) power input three; The control logic of setting by Distributed Control System DCS, to working power service entrance switch 412A and working power outlet switch 411E, stand-by power supply service entrance switch 412B and stand-by power supply outlet switch 412E, the diesel oil electric power incoming line switch 041E switching controls of interlocking.
3. according to claim 1 and 2 based on the gas-steam combined unit security personnel section control device that interlocking is hauled oneself willingly into, it is characterized in that: described working power (1), stand-by power supply (2) and diesel generation electromechanical source (4) output adopt parallel way to be connected to the power input of security personnel's sections (3), control logic by Distributed Control System DCS setting, in the time in office, maintenance work power section (1), a kind of power supply in stand-by power supply section (2) and diesel generation electromechanical source (4) is security personnel's sections (3), described three kinds of power supplys are that working power section (1) is preferential to the power supply order of security personnel's section, stand-by power supply section (2) secondly, automatically switch to diesel engine generator (4) power supply when the two kinds of abnormity of power supply in front, prevent that power supply from clashing.
4. according to claim 2 based on the gas-steam combined unit security personnel section control device that interlocking is hauled oneself willingly into, it is characterized in that: set described working power service entrance switch 412A combined floodgate and closed a floodgate fast 0.5 second than stand-by power supply service entrance switch 412B, guarantee when working power is normal, by working power section (1), be security personnel's sections (3) power supply.
5. according to claim 2 based on the gas-steam combined unit security personnel section control device that interlocking is hauled oneself willingly into, it is characterized in that: after working power service entrance switch 412A, stand-by power supply service entrance switch 412B separating brake, time delay 2.5 seconds, diesel oil electric power incoming line switch 041E closes a floodgate, guarantee when working power section (1) and stand-by power supply section (2) are abnormal, just by diesel engine generator (4), be security personnel's sections (3) power supply.
6. according to claim 2 based on the gas-steam combined unit security personnel section control device that interlocking is hauled oneself willingly into, it is characterized in that: described working power outlet switch 412A and stand-by power supply outlet switch 412B are for detecting trip switch, when working power section (1), tripping operation when stand-by power supply section (2) is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203133538U CN203301225U (en) | 2013-06-02 | 2013-06-02 | Control device based on security-section interlocking self-switchover of gas-steam combined unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203133538U CN203301225U (en) | 2013-06-02 | 2013-06-02 | Control device based on security-section interlocking self-switchover of gas-steam combined unit |
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| CN203301225U true CN203301225U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203133538U Expired - Fee Related CN203301225U (en) | 2013-06-02 | 2013-06-02 | Control device based on security-section interlocking self-switchover of gas-steam combined unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326457A (en) * | 2013-06-02 | 2013-09-25 | 深圳市广前电力有限公司 | Control method and control device based on gas-steam integral unit security segment interlock automatic switch |
| CN104917289A (en) * | 2015-06-25 | 2015-09-16 | 沈阳铝镁设计研究院有限公司 | Automatic switching method for emergency power supply and two-way working power supplies of diesel generator |
| CN110768370A (en) * | 2019-10-18 | 2020-02-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
| CN114336578A (en) * | 2021-12-13 | 2022-04-12 | 陕西航空电气有限责任公司 | Priority control circuit of three-channel high-voltage direct-current power supply system |
| CN115249982A (en) * | 2021-04-28 | 2022-10-28 | 华能北京热电有限责任公司 | Power grid safety control system for load control of gas turbine generator set |
-
2013
- 2013-06-02 CN CN2013203133538U patent/CN203301225U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326457A (en) * | 2013-06-02 | 2013-09-25 | 深圳市广前电力有限公司 | Control method and control device based on gas-steam integral unit security segment interlock automatic switch |
| CN104917289A (en) * | 2015-06-25 | 2015-09-16 | 沈阳铝镁设计研究院有限公司 | Automatic switching method for emergency power supply and two-way working power supplies of diesel generator |
| CN110768370A (en) * | 2019-10-18 | 2020-02-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
| CN115249982A (en) * | 2021-04-28 | 2022-10-28 | 华能北京热电有限责任公司 | Power grid safety control system for load control of gas turbine generator set |
| CN115249982B (en) * | 2021-04-28 | 2024-04-26 | 华能北京热电有限责任公司 | Power grid safety control system for load control of gas turbine generator set |
| CN114336578A (en) * | 2021-12-13 | 2022-04-12 | 陕西航空电气有限责任公司 | Priority control circuit of three-channel high-voltage direct-current power supply system |
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