CN103326457A - Control method and control device based on gas-steam integral unit security segment interlock automatic switch - Google Patents
Control method and control device based on gas-steam integral unit security segment interlock automatic switch Download PDFInfo
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- CN103326457A CN103326457A CN2013102138435A CN201310213843A CN103326457A CN 103326457 A CN103326457 A CN 103326457A CN 2013102138435 A CN2013102138435 A CN 2013102138435A CN 201310213843 A CN201310213843 A CN 201310213843A CN 103326457 A CN103326457 A CN 103326457A
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Abstract
The invention relates to a control method and control device based on gas-steam integral unit security segment interlock automatic switch. The control method based on gas-steam integral unit security segment interlock automatic switch is characterized in that a power supply circuit of a security segment of a gas-steam integral unit is divided into three branches; logic control is conducted on a working power source switch, a standby power source switch and a diesel power source switch through a DCS, so that an interlock switch security segment power source supplying structure among a working power source, a standby power source and a diesel power source is formed; after brake dividing is conducted on the working power source and a coil-in switch of the standby power source in the gas-steam integral unit security segment and a time-delay relay is triggered by a contact, so that a diesel generator in the gas-steam integral unit is controlled to start; the relay with self-starting split-second response of the diesel generator of the gas-steam integral unit is designed to the time-delay relay, and the delay of the relay is adjusted, so that interlock switch of the security segment under the conditions of different loads is adapted. Interlock switch of the security segment under the conditions of different loads is adapted through the adjustment of time delay of the relay, so that the reliability of interlock switch of the security segment is improved.
Description
Technical field:
The present invention relates to section control method and device that interlocking is hauled oneself willingly into based on gas-steam combined unit security personnel, be applicable to that security personnel's section of raising 9F level gas-steam combined unit is hauled oneself willingly into control, belong 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, does not have mature experience for its design, installation China, and the design and installation of a lot of auxiliary devices all is 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 the 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 because security personnel's section load size and property difference, after the coasting operation of security personnel's section power failure motor, often switch and get nowhere, bring major safety risks to unit safety operation; 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 by 0.5 second time-delay when under normal operating mode, switching to stand-by power supply by working power, caused security personnel's section dead electricity time elongated, the safety when being unfavorable for the unit accidental shutdown.
Therefore, there are problems such as control instability 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 the power plant badly.
Summary of the invention:
One of purpose of the present invention is in order to solve present technology gas-steam combined unit security personnel section interlocked control problem of unstable, a kind of control method of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking to be provided.
Two of purpose of the present invention is in order to solve present technology gas-steam combined unit security personnel section interlocked control problem of unstable, a kind of control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking to be provided.
One of purpose of the present invention can reach by taking following technical scheme:
Control method based on gas-steam combined unit security personnel section interlocking is hauled oneself willingly into is characterized in that:
1) a kind of control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking is set, the current supply circuit of security personnel's section is set to three the tunnel in the gas-steam combined unit, it is respectively working power, stand-by power supply and diesel engine generator power supply, three control output ends of Distributed Control System DCS connect the working power switch respectively, the control input end of Backup Power Switch and diesel oil mains switch, by Distributed Control System DCS to making mains switch, the logic control of Backup Power Switch and diesel oil mains switch constitutes working power, interlocking switches security personnel's section energy supply structure between stand-by power supply and the diesel engine power supply;
2) utilize the working power of security personnel's section in the gas-steam combined unit, the equal separating brake back contact of service entrance switch of stand-by power supply to trigger the startup that time-delay relay is controlled 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 the relay of band time-delay, the interlocking that time-delay by this relay of adjusting adapts under the different load condition of security personnel's section switches, to improve the reliability that security personnel's section interlocking switches.
One of purpose of the present invention can also reach by taking following technical scheme:
Further, the control of diesel engine in the gas-steam combined unit in the step 1) improves the logical condition that interlocking switches according to the operational mode of gas-steam combined unit, when satisfying the switching reliability, shortens switching time, reduces security personnel's section interruption duration.
Further, to the switch of working power loop operation, adopt security personnel's section busbar voltage to be lower than 150 volts in the step 1), delay time and ran the pass in 0.5 second jointly; To the switch in stand-by power supply loop, adopt security personnel's section busbar voltage to be lower than 150 volts, delay time and ran the pass in 0 second jointly.
Further; step 2) in; the delay time of time-delay relay by under two kinds of typical way when unit is normally moved and when shutting down during actual measurement security personnel section bus loss of pressure voltage curve adjust; decide on different gas-steam combined units; its basic principle is guaranteeing to switch under the reliable prerequisite, and is short as far as possible.
Further, the control logic of diesel engine is as follows in the gas-steam combined unit:
1) three machine diesel engine starting relays are made as the band time-delay relay after will the equal separating brake of the section of security personnel two service entrance switchs, 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) stand-by power supply section mains switch time-delay after security personnel's section voltage is lower than 150V in the control logic of Distributed Control System DCS was cancelled in 0.5 second, working power section mains switch increases time-delay in 0.5 second, close standby electric power-feeding structure to form normal operating mode by the power supply of working power section power supply, stand-by power supply section power supply, realize the target that shortens security personnel's section dead electricity time and avoid two switches to close a floodgate simultaneously.
Two of purpose of the present invention can reach by taking following technical scheme:
Control device based on gas-steam combined unit security personnel section interlocking is hauled oneself willingly into comprises 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's 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 three tunnel electric power-feeding structures to security personnel's section; Three control output ends of Distributed Control System DCS connect the control input end of working power switch, Backup Power Switch and diesel oil mains switch respectively, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, constitute an interlocking switching security personnel section energy supply structure between working power, stand-by power supply and the diesel engine power supply by Distributed Control System DCS.
Two of purpose of the present invention can also reach by taking following technical scheme:
Further, the working power switch is made of working power service entrance switch 412A and power outlet switch 411E, Backup Power Switch goes out wiretap 412E by stand-by power supply service entrance switch 412B and stand-by power supply and constitutes, and the diesel oil mains switch is made of diesel oil electric power incoming line switch 041E; The working power section goes out wiretap 411E by working power service entrance switch 412A, working power and connects one of power input of security personnel's section, the stand-by power supply section by stand-by power supply service entrance switch 412B, stand-by power supply go out wiretap 412E connect 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 goes out wiretap 411E, stand-by power supply service entrance switch 412B and stand-by power supply to working power service entrance switch 412A and working power and goes out wiretap 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 of keeping in working power section, stand-by power supply section and the diesel engine generator power supply 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, when the two kinds of abnormity of power supply in front, automatically switch to the diesel engine generator power supply, 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 in working power just often, is the power supply of security personnel's section by the working power section.
Further, behind working power service entrance switch 412A, stand-by power supply service entrance switch 412B separating brake, delayed time 2.5 seconds, diesel oil electric power incoming line switch 041E closes a floodgate, and guarantees to be the power supply of security personnel's section by diesel engine generator just when working power section and stand-by power supply section are unusual.
Further, described working power goes out wiretap 412A and stand-by power supply and goes out wiretap 412B for detecting trip switch, when working power section, tripping operation when the stand-by power supply section is unusual.
The present invention has following outstanding beneficial effect:
1, the present invention is improved to the relay of band time-delay by the relay with diesel engine generator self-starting instantaneous operation, the interlocking that can adapt to by the time-delay of the relay of adjusting under the different load condition of security personnel's section switches, thereby improves the reliability that security personnel's section interlocking switches.
2, the present invention is improved to the relay of band 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 when shutting down during actual measurement security personnel section bus loss of pressure voltage curve adjust; decided by different gas-steam combined units; its basic principle is guaranteeing to switch under the reliable prerequisite, and is short as far as possible.
3, the present invention improves the logical condition that interlocking switches according to operational mode, when satisfying the switching reliability, shortens switching time, reduces security personnel's section interruption duration.
4, the present invention carries out security control by the switching to security personnel section, and is simple in structure, easy to operate, improved the fail safe of associating unit operation greatly.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, improved the reliability that security personnel's section interlocking switches greatly.
Description of drawings
Fig. 1 is for inventing the structural representation of a specific embodiment of control device that relates to.
Fig. 2 is the diesel engine start-stop control principle figure of unit of the present invention.
Fig. 3 is switch interlock logic control principle of the present invention.
Embodiment:
The present invention is described in further detail below in conjunction with drawings and Examples:
Specific embodiment 1:
Fig. 1, Fig. 2 and Fig. 3 constitute specific embodiments of the invention 1.
With reference to Fig. 1, the control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking that present embodiment relates to 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's 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 three tunnel electric power-feeding structures to security personnel's section 3; Three control output ends of Distributed Control System DCS connect the control input end of working power switch, Backup Power Switch and diesel oil mains switch respectively, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, constitute an interlocking switching security personnel section energy supply structure between working power, stand-by power supply and the 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 is made of working power service entrance switch 412A and power outlet switch 411E, and Backup Power Switch goes out wiretap 412E by stand-by power supply service entrance switch 412B and stand-by power supply and constitutes, and the diesel oil mains switch is made of diesel oil electric power incoming line switch 041E; Working power section 1 goes out wiretap 411E by working power service entrance switch 412A, working power and connects one of power input of security personnel's section 3, stand-by power supply section 2 by stand-by power supply service entrance switch 412B, stand-by power supply go out wiretap 412E connect 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 goes out wiretap 411E, stand-by power supply service entrance switch 412B and stand-by power supply to working power service entrance switch 412A and working power and goes out wiretap 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 engine generator power supply 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 of keeping in working power section 1, stand-by power supply section 2 and the diesel engine generator power supply 4 is security personnel's section 3, described three kinds of power supplys to the power supply order of security personnel section be that the working power section is 1 preferential, stand-by power supply section 2 secondly, when the two kinds of abnormity of power supply in front, automatically switch to diesel engine generator 4 power supplies, 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 in working power just often, be 3 power supplies of security personnel's section by working power section 1.
Behind working power service entrance switch 412A, stand-by power supply service entrance switch 412B separating brake, delayed time 2.5 seconds, diesel oil electric power incoming line switch 041E closes a floodgate, and guarantees just to be 3 power supplies of security personnel's section by diesel engine generator 4 when working power section 1 and stand-by power supply section 2 are unusual.
Described working power goes out wiretap 412A and stand-by power supply and goes out wiretap 412B for detecting trip switch, tripping operation when working power section 1, stand-by power supply section 2 are unusual.
A control method of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking that the present invention relates to is characterized in that:
1) current supply circuit of security personnel's section is set to three the tunnel in the gas-steam combined unit, be respectively working power, stand-by power supply and diesel engine generator power supply, three control output ends of Distributed Control System DCS connect the control input end of working power switch, Backup Power Switch and diesel oil mains switch respectively, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, constitute an interlocking switching security personnel section energy supply structure between working power, stand-by power supply and the 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 service entrance switch of stand-by power supply to trigger the startup that time-delay relay is controlled 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 the relay of band time-delay, the interlocking that time-delay by this relay of adjusting adapts under the different load condition of security personnel's section switches, to improve the reliability that security personnel's section interlocking switches.
Further, the control of diesel engine in the gas-steam combined unit in the step 1) improves the logical condition that interlocking switches according to the operational mode of gas-steam combined unit, when satisfying the switching reliability, shortens switching time, reduces security personnel's section interruption duration.
Further, to the switch of working power loop operation, adopt security personnel's section busbar voltage to be lower than 150 volts in the step 1), delay time and ran the pass in 0.5 second jointly; To the switch in stand-by power supply loop, adopt security personnel's section busbar voltage to be lower than 150 volts, delay time and ran the pass in 0 second jointly.
Further; step 2) in; the delay time of time-delay relay by under two kinds of typical way when unit is normally moved and when shutting down during actual measurement security personnel section bus loss of pressure voltage curve adjust; decide on different gas-steam combined units; its basic principle is guaranteeing to switch under the reliable prerequisite, and is short as far as possible.
Further, the control logic of diesel engine is as follows in the gas-steam combined unit:
1) three machine diesel engine starting relays are made as the band time-delay relay after will the equal separating brake of the section of security personnel two service entrance switchs, 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) stand-by power supply section 2 mains switches time-delay after security personnel's section voltage is lower than 150V in the control logic of Distributed Control System DCS was 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 the power supply of 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.
Be example with #1 unit in applicant's production practices below, the operation principle of the specific embodiment of the invention be described:
As Fig. 1, Fig. 2 and shown in Figure 3, 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; Security personnel section 3 has the three-way power power supply, just often by work A section 1 by switch 411E power supply, if the 411E tripping is to security personnel's section dead electricity, work B section 2 can be hauled oneself willingly into by switch 412E, unsuccessful if 412E closes a floodgate, diesel engine generator 4 self-starting is again given the power supply of security personnel's section.In the 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 security personnel section mains switch interlock test, manual tripping 411E switch, the 412E switch is not hauled oneself willingly into, diesel engine starting is to the power supply of security personnel's section.The security personnel's section of reforming mains switch interlock test, result of the test is as follows: under 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), start automatically.Behind the 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, because 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 that security personnel section from sending electricity, 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, so when cutting from 412E toward 411E, 411E closes a floodgate than the fast 0.5S of 412E, and is faster than diesel engine starting just, so 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 that switches from 411E toward 412E is bigger, will judge that the 0.5S behind security personnel's section busbar voltage＜150V changes to the logic of closing 411E from the logic of closing 412E.
The control logic of diesel engine is as follows in the gas-steam combined unit:
1) three machine diesel engine starting relays are made as the band time-delay relay after will the equal separating brake of the section of security personnel two service entrance switchs, 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) security personnel section voltage in the control logic of Distributed Control System DCS is lower than stand-by power supply section 2 mains switches time-delay 0.5S cancellation behind the 150V, working power section 1 mains switch increases the 0.5S time-delay, close standby electric power-feeding structure to form normal operating mode by the power supply of 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; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all belonged to protection scope of the present invention.
Claims (10)
1. based on the gas-steam combined unit security personnel section control method that interlocking is hauled oneself willingly into, it is characterized in that:
1) a kind of control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking is set, the current supply circuit of security personnel's section is set to three the tunnel in the gas-steam combined unit, it is respectively working power, stand-by power supply and diesel engine generator power supply, three control output ends of Distributed Control System DCS connect the working power switch respectively, the control input end of Backup Power Switch and diesel oil mains switch, by Distributed Control System DCS to making mains switch, the logic control of Backup Power Switch and diesel oil mains switch constitutes working power, interlocking switches security personnel's section energy supply structure between stand-by power supply and the diesel engine power supply;
2) utilize the working power of security personnel's section in the gas-steam combined unit, the equal separating brake back contact of service entrance switch of stand-by power supply to trigger the startup that time-delay relay is controlled 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 the relay of band time-delay, the interlocking that time-delay by this relay of adjusting adapts under the different load condition of security personnel's section switches, to improve the reliability that security personnel's section interlocking switches.
2. as claimed in claim 1 based on the gas-steam combined unit security personnel section control method that interlocking is hauled oneself willingly into, it is characterized in that: the control of diesel engine in the gas-steam combined unit in the step 1), operational mode according to the gas-steam combined unit is improved the logical condition that interlocking switches, when satisfying the switching reliability, shorten switching time, reduce security personnel's section interruption duration.
3. the control method of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking as claimed in claim 1 is characterized in that: to the switch of working power loop operation, adopt security personnel's section busbar voltage to be lower than 150 volts in the step 1), delay time and ran the pass in 0.5 second jointly; To the switch in stand-by power supply loop, adopt security personnel's section busbar voltage to be lower than 150 volts, delay time and ran the pass in 0 second jointly.
4. as claimed in claim 1 based on the gas-steam combined unit security personnel section control method that interlocking is hauled oneself willingly into; it is characterized in that: step 2) in; the delay time of time-delay relay by under two kinds of typical way when unit is normally moved and when shutting down during actual measurement security personnel section bus loss of pressure voltage curve adjust; decide on different gas-steam combined units; its basic principle is guaranteeing to switch under the reliable prerequisite, and is short as far as possible.
5. as claimed in claim 1 based on the gas-steam combined unit security personnel section control method that interlocking is hauled oneself willingly into, it is characterized in that: the control logic of diesel engine is as follows in the gas-steam combined unit:
1) three machine diesel engine starting relays are made as the band time-delay relay after will the equal separating brake of the section of security personnel two service entrance switchs, 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) stand-by power supply section 2 mains switches time-delay after security personnel's section voltage is lower than 150V in the control logic of Distributed Control System DCS was cancelled in 0.5 second, working power section mains switch increases time-delay in 0.5 second, close standby electric power-feeding structure to form normal operating mode by the power supply of working power section power supply, stand-by power supply section power supply, realize the target that shortens security personnel's section dead electricity time and avoid two switches to close a floodgate simultaneously.
6. the control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking comprises 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's sections (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 three tunnel electric power-feeding structures to security personnel's sections (3); Three control output ends of Distributed Control System DCS connect the control input end of working power switch, Backup Power Switch and diesel oil mains switch respectively, to doing the logic control of mains switch, Backup Power Switch and diesel oil mains switch, constitute an interlocking switching security personnel section energy supply structure between working power, stand-by power supply and the diesel engine power supply by Distributed Control System DCS.
7. according to claim 6 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 is made of working power service entrance switch 412A and power outlet switch 411E, Backup Power Switch goes out wiretap 412E by stand-by power supply service entrance switch 412B and stand-by power supply and constitutes, and the diesel oil mains switch is made of diesel oil electric power incoming line switch 041E; Working power section (1) goes out wiretap 411E by working power service entrance switch 412A, working power and connects one of power input of security personnel's sections (3), stand-by power supply section (2) by stand-by power supply service entrance switch 412B, stand-by power supply go out wiretap 412E connect 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 goes out wiretap 411E, stand-by power supply service entrance switch 412B and stand-by power supply to working power service entrance switch 412A and working power and goes out wiretap 412E, the diesel oil electric power incoming line switch 041E switching controls of interlocking.
8. according to claim 6 or the 7 described control device of hauling oneself willingly into based on gas-steam combined unit security personnel section interlocking, it is characterized in that: described working power (1), stand-by power supply (2) and diesel engine generator power supply (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, keep working power section (1), a kind of power supply in stand-by power supply section (2) and the diesel engine generator power supply (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, when the two kinds of abnormity of power supply in front, automatically switch to diesel engine generator (4) power supply, prevent that power supply from clashing.
9. according to claim 7 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 in working power just often, be security personnel's sections (3) power supply by working power section (1).
10. according to claim 7 based on the gas-steam combined unit security personnel section control device that interlocking is hauled oneself willingly into, it is characterized in that: behind working power service entrance switch 412A, stand-by power supply service entrance switch 412B separating brake, delayed time 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 unusual, just be security personnel's sections (3) power supply by diesel engine generator (4); Described working power goes out wiretap 412A and stand-by power supply goes out wiretap 412B for detecting trip switch, when working power section (1), tripping operation when stand-by power supply section (2) is unusual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102138435A CN103326457A (en) | 2013-06-02 | 2013-06-02 | Control method and control device based on gas-steam integral unit security segment interlock automatic switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106655478A (en) * | 2017-01-25 | 2017-05-10 | 云南水务投资股份有限公司 | Low-voltage emergency safety power supply system of household garbage power plant and control method of system |
| CN109193912A (en) * | 2018-11-01 | 2019-01-11 | 西安热工研究院有限公司 | A kind of diesel-driven generator back-up system based on power plant energy storage auxiliary frequency modulation |
| CN110401194A (en) * | 2019-08-15 | 2019-11-01 | 西安热工研究院有限公司 | A gas-steam combined cycle distributed energy three-power fast switching system and method |
| CN112003238A (en) * | 2020-08-17 | 2020-11-27 | 西安热工研究院有限公司 | Relay protection method for preventing power loss of security section of gas turbine power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106655478A (en) * | 2017-01-25 | 2017-05-10 | 云南水务投资股份有限公司 | Low-voltage emergency safety power supply system of household garbage power plant and control method of system |
| CN109193912A (en) * | 2018-11-01 | 2019-01-11 | 西安热工研究院有限公司 | A kind of diesel-driven generator back-up system based on power plant energy storage auxiliary frequency modulation |
| CN110401194A (en) * | 2019-08-15 | 2019-11-01 | 西安热工研究院有限公司 | A gas-steam combined cycle distributed energy three-power fast switching system and method |
| CN112003238A (en) * | 2020-08-17 | 2020-11-27 | 西安热工研究院有限公司 | Relay protection method for preventing power loss of security section of gas turbine power plant |
| CN112003238B (en) * | 2020-08-17 | 2022-11-15 | 西安热工研究院有限公司 | Relay protection method for preventing power loss of security section of gas turbine power plant |
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Application publication date: 20130925 |