CN104538928B - A kind of generating set and power network are powered automatic switchover stored program controlled generator failure start-up study protection device - Google Patents
A kind of generating set and power network are powered automatic switchover stored program controlled generator failure start-up study protection device Download PDFInfo
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- CN104538928B CN104538928B CN201410764615.1A CN201410764615A CN104538928B CN 104538928 B CN104538928 B CN 104538928B CN 201410764615 A CN201410764615 A CN 201410764615A CN 104538928 B CN104538928 B CN 104538928B
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- direct current
- auxiliary reclay
- generating set
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Abstract
Powered automatic switchover stored program controlled generator failure start-up study protection device, including direct current 24V power supplys D, generating set starting relay DA, direct current auxiliary reclay DC and direct-current time delay DS the invention discloses a kind of generating set and power network.With advantages below：Protection device control starting duration most long continues 15 seconds; the continuous number of times for starting motor is controlled within 3 times; if unit can not start because of faults itself in 15 seconds; the device will close automatic ignition system in time; continuous start is avoided to cause the damage of the equipment such as starter motor, storage battery; prevent from triggering potential safety hazard, extend the service life of generator.
Description
Technical field
Protected the present invention relates to a kind of generating set and power network automatic switchover stored program controlled generator failure start-up study of powering
Protection unit, belongs to electronic technology field.
Background technology
Generator is topmost equipment in power system, and generator single-machine capacity constantly increases, and can reduce unit and make
Valency and cost of electricity-generating, improve labour productive forces.But unit capacity is excessive, the downtime rate of generator is exactly to increase, availability
It can decrease.And generator once breaks down, endanger huge, one is that direct impact is produced to electricity generation system；Two be with
The raising of generator efficiency, each failure all may cause fatal damage to generator.Due to generator failure it is destructive very
Greatly, in order to mitigate its infringement, it is ensured that the operation safety of generator is it is necessary to improve the protective capability to generator failure, still
The current protection to generator has the problem of reliability and sensitivity is difficult to take into account.
The content of the invention
The problem to be solved in the present invention is not enough for more than to be powered automatic switchover journey there is provided a kind of generating set and power network
System generator group fault initiating delay protection device is controlled, the device reliability is high, and sensitivity is good, substantially prolongs generator
Service life.
To solve the above problems, the present invention uses following technical scheme：
A kind of generating set and power network are powered automatic switchover stored program controlled generator failure start-up study protection device, including
Direct current 24V power supplys D, generating set starting relay DA, direct current auxiliary reclay DC and direct-current time delay DS.
Further, the direct current 24V power supplys D is also associated with generating set starter motor QD, and direct current 24V power supply D positive poles connect
Sending and receiving group of motors starter motor QD electromagnetic switch wiring positive terminals, generating set starter motor QD starter motor ignition lead and generating set
Starting relay DA normally opened main contact one end connection, generating set starting relay DA normally opened main contact other end connection hair
Group of motors starting relay DA one end, relay DA other ends connection direct current 24V power supplys D negative pole.
Further, direct-current time delay DS one end and direct current auxiliary reclay DC wiring point 2, the direct current time after
The electrical equipment DS other end is connected with relay DA normally opened main contact.
Further, direct current 24V power supplys D positive poles be connected to electric set electric supply contactor KM2 one end auxiliary it is normally closed touch
Point, the electric set electric supply contactor KM2 other end is connected to the auxiliary normally-closed contact of power network electrical power contact device KM1 one end
Relay in the middle of 1KM1, power network electrical power contact device the KM1 other end connection power network test auxiliary reclay CA one end, power network test
The normally-closed contact A8 of the device CA other ends is connected to direct current auxiliary reclay DC wiring point 3, direct current auxiliary reclay DC wiring
The normally opened contact of point 6 and direct current time timer.
Further, the wiring that the other end of direct-current time delay DS normally opened contact passes through direct current auxiliary reclay DC
Point 7 accesses direct current auxiliary reclay DC, and direct current auxiliary reclay DC wiring point 8 is connected to direct current 24V power supplys D negative pole.
Further, direct current auxiliary reclay DC wiring point 1 connects direct current auxiliary reclay DC normally-closed contact NC1's
One end, the direct current auxiliary reclay DC normally-closed contacts NC1 other end connects direct current auxiliary reclay DC wiring point 3 and connect respectively
Line point 5.
Further, direct current auxiliary reclay DC wiring point 6 connects direct current auxiliary reclay DC normally-closed contact NC2's
One end, normally-closed contact NC2 other end connection direct current auxiliary reclay DC wiring point 2.
Further, the one of the direct current auxiliary reclay DC connection direct current auxiliary reclay of wiring point 4 DC normally opened contact
End, the other end connection direct current auxiliary reclay DC of direct current auxiliary reclay DC normally opened contact wiring point 8.
Generating set of the present invention and power network are powered automatic switchover stored program controlled generator failure start-up study protection device, its
Have the following advantages that：
1st, under power network power supply state, once grid power blackout, the protection device can continuously start generator, including three times
Start, respectively one-shot, restarting and three startups, one-shot generator is unsuccessful can to carry out restarting,
Restarting generator is unsuccessful can also to carry out three startups, and the continuous number of times for starting motor is controlled within 3 times；
2nd, the protection device extends the service life of generator：Protection device control starting duration most long continues 15
Second, the continuous number of times for starting motor is controlled within 3 times, if unit can not start because of faults itself in 15 seconds, and the device will
Automatic ignition system is closed in time, it is to avoid continuous start causes the damage of the equipment such as starter motor, storage battery, prevent from triggering safety hidden
Suffer from so that the service life of generator extends 1.5 times, and spoilage reduces 42%；
3rd, the protection device sensitivity is good：The protection device one-shot generator and power supply of automatically switching spent time
Control is in 2-4 seconds, and other protection device generators restarting consuming time is generally 5-7 seconds, greatly reduces generating
The time required to machine restarting；
4th, the protection device reliability is high：Run the protection device 100 times, the successful number of times of one-shot generator is 92
Secondary, the successful number of times of restarting generator is 6 times, and three successful number of times of startup generator are 2 times, thus one-shot into
Power is 92%, and restarting success rate is 98%, and it is 100% that three times, which start success rate, and the protection device can be very successful
Start generator；
5th, the protection device is simple in construction, and cost is low, low compared with same kind of products at abroad cost by about 25%.
The present invention is described in detail with reference to the accompanying drawings and examples.
Brief description of the drawings
Accompanying drawing 1 is that generating set and power network are powered the startup of automatic switchover stored program controlled generator failure in the embodiment of the present invention
The circuit diagram of delay protection device.
Embodiment
Embodiment, the automatic switchover stored program controlled generator failure startup as shown in figure 1, a kind of generating set and power network are powered
Delay protection device includes direct current 24V power supply D, and direct current 24V power supplys D is connected with generating set starter motor QD, generating set and started
Relay DA, electric set electric supply contactor KM2, direct current auxiliary reclay DC and direct-current time delay DS, generating set opens
Motivation QD is connected with generating set starting relay DA normally opened main contact, electric set electric supply contactor KM2It is connected with power network
Electrical power contact device KM1, power network electrical power contact device KM1It is connected with power network test auxiliary reclay CA, power network test auxiliary reclay CA
It is connected with direct current time timer.
Direct current 24V power supply D positive poles connect generating set starter motor QD electromagnetic switch wiring positive terminals, generating set starter motor
QD starter motor ignition lead is connected with generating set starting relay DA normally opened main contact one end, generating set starting relay
DA normally opened main contact other end connection generating set starting relay DA one end, direct-current time delay DS one end and direct current
Auxiliary reclay DC wiring point 2, generating set starting relay DA other ends connection direct current 24V power supplys D negative pole.
Generating set starting relay DA normally opened main contact other end connection direct-current time delay DS one end, direct current
Time relay DS other end connection direct current 24V power supplys D negative pole.
Generating set starting relay DA normally opened main contact other end connection direct current auxiliary reclay DC wiring point 2,
Direct current auxiliary reclay DC wiring point 2 is connected to by normally-closed contact in the middle of direct current auxiliary reclay DC wiring point 6, direct current
Relay DC wiring point 6 is connected to power network test auxiliary reclay CA normally-closed contact A8.
Direct current 24V power supply D positive poles are connected to electric set electric supply contactor KM2The auxiliary normally-closed contact of one end, generator
Group electrical power contact device KM2The other end be connected to power network electrical power contact device KM1The auxiliary normally-closed contact 1KM of one end1, power network powers
Contactor KM1Other end connection power network test auxiliary reclay CA one end, the power network test auxiliary reclay CA other ends
Normally-closed contact A8 is connected to direct current auxiliary reclay DC wiring point 3, direct current auxiliary reclay DC wiring point 6 and direct current time
The normally opened contact of timer, the wiring that the other end of direct-current time delay DS normally opened contact passes through direct current auxiliary reclay DC
Point 7 accesses direct current auxiliary reclay DC, and direct current auxiliary reclay DC wiring point 8 is connected to direct current 24V power supplys D negative pole.
In addition, the one of the direct current auxiliary reclay DC connection direct current auxiliary reclay of wiring point 1 DC normally-closed contact NC1
End, the direct current auxiliary reclay DC normally-closed contacts NC1 other end connects direct current auxiliary reclay DC wiring point 3 and wiring respectively
Point 5；The direct current auxiliary reclay DC connection direct current auxiliary reclay of wiring point 6 DC normally-closed contact NC2 one end, normally-closed contact
NC2 other end connection direct current auxiliary reclay DC wiring point 2；In the direct current auxiliary reclay DC connection direct current of wiring point 4
Between relay DC normally opened contact one end, direct current auxiliary reclay DC normally opened contact the other end connection direct current in the middle of relay
Device DC wiring point 8.
Under normal activation state, direct current 24V power supplys D+24V direct currents pass through KM1And KM2Auxiliary contact 1KM1With
2KM2, auxiliary reclay CA normally-closed contact A8, direct current auxiliary reclay DC wiring point 6, by normally closed are tested into power network
Contact NC2, to direct current auxiliary reclay DC wiring point 2, into generating set starting relay DA coils, starting relay DA
Normally opened main contact closure, direct current is supplied to generating set starter motor QD, and unit automatic ignition starts and generated electricity.If continuously starting 15
Second, unit do not start still, illustrate that unit is faulty, direct-current time delay DS coil be total in the middle of+24V direct currents, direct current after
Electrical equipment DC coil energized actions, normally-closed contact disconnects, and cuts off electric set electric supply, stops starting.
Generating set of the present invention and power network are powered automatic switchover stored program controlled generator failure start-up study protection device, its
Have the following advantages that：
Under power network power supply state, once grid power blackout, the protection device can continuously start generator, including three times are opened
It is dynamic, respectively one-shot, restarting and three startups, one-shot generator is unsuccessful can to carry out restarting, two
Secondary startup generator is unsuccessful can also to carry out three startups, and the continuous number of times for starting motor is controlled within 3 times；
The protection device extends the service life of generator：Protection device control starting duration most long continues 15
Second, the continuous number of times for starting motor is controlled within 3 times, if unit can not start because of faults itself in 15 seconds, and the device will
Automatic ignition system is closed in time, it is to avoid continuous start causes the damage of the equipment such as starter motor, storage battery, prevent from triggering safety hidden
Suffer from so that the service life of generator extends 1.5 times, and spoilage reduces 42%；
The protection device sensitivity is good：The protection device one-shot generator and the spent time control of power supply of automatically switching
System is in 2-4 seconds, and other protection device generators restarting consuming time is generally 5-7 seconds, greatly reduces generator
The time required to restarting；
The protection device reliability is high：Run the protection device 100 times, the successful number of times of one-shot generator is 92
Secondary, the successful number of times of restarting generator is 6 times, and three successful number of times of startup generator are 2 times, thus one-shot into
Power is 92%, and restarting success rate is 98%, and it is 100% that three times, which start success rate, and the protection device can be very successful
Start generator；
Citing described above for best mode for carrying out the invention, wherein the part do not addressed in detail is that this area is common
The common knowledge of technical staff.Protection scope of the present invention is defined by the content of claim, any technology based on the present invention
The equivalent transformation for enlightening and carrying out, also within protection scope of the present invention.
Claims (1)
- Automatic switchover stored program controlled generator failure start-up study protection device, its feature 1. a kind of generating set and power network are powered It is：Including direct current 24V power supplys D, generating set starting relay DA, direct current auxiliary reclay DC and direct-current time delay DS；The direct current 24V power supplys D is also associated with generating set starter motor QD, and direct current 24V power supply D positive poles connection generating set starts Machine QD electromagnetic switch wiring positive terminals, generating set starter motor QD starter motor ignition lead is with generating set starting relay DA's Normally opened main contact one end connection, generating set starting relay DA normally opened main contact other end connection generating set starts relay Device DA one end, generating set starting relay DA other ends connection direct current 24V power supplys D negative pole；One end of the direct-current time delay DS and direct current auxiliary reclay DC wiring point 2 are connected, direct-current time delay The DS other end is connected with generating set starting relay DA normally opened main contact；The direct current 24V power supplys D positive poles are connected to the auxiliary normally-closed contact of electric set electric supply contactor KM2 one end, generator The group electrical power contact device KM2 other end is connected to the auxiliary normally-closed contact 1KM1 of power network electrical power contact device KM1 one end, and power network is powered Contactor KM1 other end connection power network test auxiliary reclay CA one end, the power network test auxiliary reclay CA other ends Normally-closed contact A8 is connected respectively to direct current auxiliary reclay DC wiring point 3, direct current auxiliary reclay DC wiring point 6 and direct current The normally opened contact of time timer；The other end of the normally opened contact of the direct-current time delay DS is accessed directly by direct current auxiliary reclay DC wiring point 7 Auxiliary reclay DC is flowed, direct current auxiliary reclay DC wiring point 8 is connected to direct current 24V power supplys D negative pole；The connection direct current auxiliary reclay of wiring point 1 DC of direct current auxiliary reclay DC normally-closed contact NC1 one end, direct current The auxiliary reclay DC normally-closed contacts NC1 other end connects direct current auxiliary reclay DC wiring point 3 and wiring point 5 respectively；The connection direct current auxiliary reclay of wiring point 6 DC of direct current auxiliary reclay DC normally-closed contact NC2 one end, it is normally closed Contact NC2 other end connection direct current auxiliary reclay DC wiring point 2；In one end of the connection direct current auxiliary reclay of wiring point 4 DC of direct current auxiliary reclay DC normally opened contact, direct current Between relay DC normally opened contact other end connection direct current auxiliary reclay DC wiring point 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764615.1A CN104538928B (en) | 2014-12-12 | 2014-12-12 | A kind of generating set and power network are powered automatic switchover stored program controlled generator failure start-up study protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764615.1A CN104538928B (en) | 2014-12-12 | 2014-12-12 | A kind of generating set and power network are powered automatic switchover stored program controlled generator failure start-up study protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104538928A CN104538928A (en) | 2015-04-22 |
| CN104538928B true CN104538928B (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410764615.1A Expired - Fee Related CN104538928B (en) | 2014-12-12 | 2014-12-12 | A kind of generating set and power network are powered automatic switchover stored program controlled generator failure start-up study protection device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3285079B1 (en) * | 2016-08-16 | 2021-10-20 | Siemens Aktiengesellschaft | Method for protecting a generator or power plant block and protective device for carrying out such a method |
| CN109342943A (en) * | 2018-11-05 | 2019-02-15 | 长沙源婕科技有限公司 | A kind of generator starting failure detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2536801Y (en) * | 2002-04-30 | 2003-02-19 | 三一重工股份有限公司 | Diesel engine starting protectors |
| CN202453721U (en) * | 2012-01-30 | 2012-09-26 | 张春城 | Global system for mobile communication (GSM) remote control and monitor device of generator |
| CN103516044A (en) * | 2013-07-30 | 2014-01-15 | 邓洪盛 | Full-automatic conversion controller of generator |
-
2014
- 2014-12-12 CN CN201410764615.1A patent/CN104538928B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2536801Y (en) * | 2002-04-30 | 2003-02-19 | 三一重工股份有限公司 | Diesel engine starting protectors |
| CN202453721U (en) * | 2012-01-30 | 2012-09-26 | 张春城 | Global system for mobile communication (GSM) remote control and monitor device of generator |
| CN103516044A (en) * | 2013-07-30 | 2014-01-15 | 邓洪盛 | Full-automatic conversion controller of generator |
Non-Patent Citations (1)
| Title |
|---|
| 独立交流微网中电池储能与柴油发电机的协调控制;郭力等;《中国电机工程学报》;20120905;第32卷(第25期);第70-78页 * |
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| CN104538928A (en) | 2015-04-22 |
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