CN208571580U - A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power - Google Patents
A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power Download PDFInfo
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- CN208571580U CN208571580U CN201821290669.9U CN201821290669U CN208571580U CN 208571580 U CN208571580 U CN 208571580U CN 201821290669 U CN201821290669 U CN 201821290669U CN 208571580 U CN208571580 U CN 208571580U
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Abstract
The utility model discloses a kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power; it is the protective device A of TJA1, TJA2 and TJA3 including output normal opened contact; export the protective device B that normal opened contact is TJB1, TJB2 and TJB3; export protective device C, the ETS cabinet that normal opened contact is TJC1, TJC2 and TJC3；The DI1 of ETS cabinet is accessed after TJA1, TJB1 and TJC1 are in parallel, and the DI2 of ETS cabinet is accessed after TJA2, TJB2 and TJC2 are in parallel, the DI3 of ETS cabinet is accessed after TJA3, TJB3 and TJC3 are in parallel.The utility model had both taken into account the mutually indepedent principle of dual electic protection; the two from three requirement of protective system in heat power is met again; the anti-tripping of electrical protective system in heat power intertripping wiring, anti-error kinetic force are improved, the reliability of enterprise operation is improved, has ensured the safe operation of unit equipment.
Description
Technical field
The utility model relates to technical field of power generation, and in particular to a kind of dual generator-transformer protection shunt tripping protective system in heat power
Circuit.
Background technique
(1) according to 2006 national standard GB/T 14285-2006 " relay protection and automatic safety device technical regulation " requirement,
100MW and the above generator transformer group should use dual main protection." power generation accident is prevented within 2014 in National Energy Board
25 important requirements " in 18.4.5 item also require: 100MW and the above duty generator transformer group should be by dual originals
Then configure Microcomputer Protection (except non-ionizing energy loss).Therefore country 100MW and the above generator transformer group are configured at present
Dual electrical quantity protects (protective device A, protective device B) and 1 set of non-ionizing energy loss (protective device C), as shown in Figure 1.
(2) when generator-transformer protection (any one in protective device A, B, C) movement is when tripping grinder, generator-transformer protection is filled
It sets needs and exports tripping contact to thermal technology's turbine emergency interrupting system (ETS) interlocking close main inlet throttle-stop valve.
(3) 18.4.8 item is bright in National Energy Board 2014 " 25 important requirements for preventing power generation accident "
Really require: two sets protective devices ... of duplicate system retrofit and other protection, equipment cooperation circuit should follow independently of each other and
Mutual corresponding principle prevents from deactivating the missing for leading to defencive function because intersecting.
(4) 9.4.3 item is then in National Energy Board 2014 " 25 important requirements for preventing power generation accident "
Protective system in heat power is distinctly claimed: the logic judgement mode of all important main and auxiliary machine protections all Ying Caiyong " two from three ", protection letter
It number should follow the whole relatively independent principle from sample point to inputting modular unit.
Protecting A, B due to electrical quantity is the protection of mutually independent dual, and is entirely different with non-ionizing energy loss C
Relay protective scheme judgement, electrical projects of relay protection require independently realize that transformer unit trips when every set protective device regular event
Stopping function.Therefore previous wiring is that generator-transformer protection device A, B, C respectively export a secondary normal opened contact (TJA, TJB, TJC) extremely
The tripping input interface of ETS cabinet, protective system in heat power ETS is used or gate logic, and when receiving any one signal, ETS starts
Turbine protection action logic.But this wiring is unable to satisfy in " 25 important requirements for preventing power generation accident "
9.4.3 the newly-increased requirement to protective system in heat power sampled signal two from three of item.
Utility model content
Technical problem to be solved by the utility model is: providing a kind of returning for dual generator-transformer protection shunt tripping protective system in heat power
Road is required and the logic judgment requirement of thermal technology's two from three with meeting electrical dual protection simultaneously.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power, including two sets for the protection of dual electrical quantity
Protective device A and protective device B, a set of protective device C for non-ionizing energy loss, and can be to the electric tripping received
The ETS cabinet that signal takes two from three protective system in heat power action logic to judge, protective device A output Third Mate be respectively TJA1,
The normal opened contact of TJA2 and TJA3, the protective device B output Third Mate are respectively the normal opened contact of TJB1, TJB2 and TJB3, institute
State the normal opened contact that protective device C output Third Mate is respectively TJC1, TJC2 and TJC3, the TJA1, the TJB1 and described
The DI1 of the electric tripping signal input DI point of the access ETS cabinet after TJC1 is parallel with one another, the TJA2, the TJB2 and
It is the DI2 of the electric tripping signal input DI point of the access ETS cabinet after the TJC2 is parallel with one another, the TJA3, described
The DI3 of the electric tripping signal input DI point of the access ETS cabinet after the TJB3 and TJC3 is parallel with one another.
Compared with prior art, the utility model has the following beneficial effects:
The utility model structure is simple, design is scientific and reasonable, and compared with prior art, the utility model is not required to increase ETS
Input signal channel, had not only taken into account the mutually indepedent principle of dual electic protection, but also met the two from three of protective system in heat power and want
It asks, improves the anti-tripping of electrical protective system in heat power intertripping wiring, anti-error kinetic force, improve the reliability of enterprise operation,
The safe operation of unit equipment is ensured.
Detailed description of the invention
Fig. 1 is the circuit diagram of dual electic protection shunt tripping protective system in heat power in the prior art.
Fig. 2 is the circuit diagram of the dual electic protection shunt tripping protective system in heat power of the utility model.
Specific embodiment
The utility model is described in further detail with embodiment for explanation with reference to the accompanying drawing, and the mode of the utility model includes
But it is not limited only to following embodiment.
As shown in Fig. 2, a kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power provided by the utility model, including
Two sets of protective device A and protective device B, a set of protective device C for non-ionizing energy loss for the protection of dual electrical quantity,
And the ETS cabinet that two from three protective system in heat power action logic can be taken the electric tripping signal received to judge, the guarantor
Protection unit A output Third Mate is respectively the normal opened contact of TJA1, TJA2 and TJA3, and the protective device B output Third Mate is respectively
The normal opened contact of TJB1, TJB2 and TJB3, the protective device C output Third Mate is respectively that the normally opened of TJC1, TJC2 and TJC3 connects
The electric tripping signal of point, the TJA1, the TJB1 and the TJC1 rear access ETS cabinet parallel with one another inputs DI point
DI1, the TJA2, the TJB2 and the TJC2 it is parallel with one another after the access ETS cabinet the input of electric tripping signal
The electric tripping signal of the access ETS cabinet after the DI2 of DI point, the TJA3, the TJB3 and the TJC3 are parallel with one another
The DI3 of DI point is inputted, ETS cabinet takes two from three logic judgment to three input signals, i.e., and if only if DI1, DI2, DI3 tri-
Just start ETS protective system in heat power action logic when receiving at least two signal (junction closure) in a signal.
" 25 important requirements for preventing power generation accident " propose the higher of two from three to protective system in heat power and want
It asks, is logically present inconsistent place with electrical dual protection independent trip, many past engineering all presses dual protection
Independently trip wiring with non-ionizing energy loss, be not carried out the requirement of protective system in heat power two from three, there are single protective device or
A possibility that person's device tripping output contact malfunction, compared with prior art, it is logical that the utility model is not required to increase ETS input signal
Road, had not only taken into account the mutually indepedent principle of dual electic protection, but also met the two from three requirement of protective system in heat power, improved electricity
The anti-tripping of gas protective system in heat power intertripping wiring, anti-error kinetic force, improve the reliability of enterprise operation, have ensured that unit is set
Standby safe operation.
The working principle of the utility model are as follows:
One, every set generator-transformer protection exports the actuating of relay contact of 3 pairs of tripping ETS, amounts to 9 pairs of contacts, respectively
TJA1, TJA2, TJA3, TJB1, TJB2, TJB3, TJC1, TJC2, TJC3.When unit failure occurs, every set protective device is correct
When movement, 3 pairs of normal opened contacts of the device should move at the same time closure.
Two, by 1 action connection point parallel connection of every three sets of protective devices, 3 pairs of signals DI1, DI2, DI3 are shared after in parallel, often
Pay signal be three sets protective device action connection points or gate logic, then by ETS cabinet to 3 pairs of signal DI1, DI2, DI3 progress three
Take two logic judgments.
Three, since three sets of protective devices are mutually indepedent, and Third Mate's contact of every covering device moves at the same time, therefore when any one
When covering protective device regular event, Third Mate's contact of output can normally start ETS protective system in heat power movement (DI1, DI2, DI3 signal
For closure), it does not interfere with each other between mutual two sets protective devices, meets the mutual only of dual electic protection and non-ionizing energy loss
Vertical principle prevents from deactivating the missing for leading to defencive function because intersecting；When malfunction occurs in one pair of contact of any a set of protective device
When (assuming that cause DI1 signal error be closed), other contact not malfunctions (DI2, DI3 signal are still turned off) will not error starting ETS
Protective system in heat power movement；When there is tripping in one pair of contact of any a set of protective device (assuming that causing DI1 signal not closed),
He is operating normally (DI2, DI3 signal closure) at two pairs of contacts, will not influence protective device and refuses starting ETS protective system in heat power movement, from
And meet the requirement of protective system in heat power two from three.
Above-described embodiment is only one of preferred embodiments of the present invention, should not be taken to limit the utility model
Protection scope, as long as the utility model body design thought and mentally make have no the change of essential meaning or profit
Color, it is solved the technical issues of it is still consistent with the utility model, the protection scope of the utility model should all be included in
Within.
Claims (1)
1. a kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power, it is characterised in that: including two sets for dual electricity
The protective device A and protective device B, a set of protective device C for non-ionizing energy loss of tolerance protection, and can be to receiving
The electric tripping signal ETS cabinet of taking two from three protective system in heat power action logic to judge, protective device A output Third Mate point
Not Wei TJA1, TJA2 and TJA3 normal opened contact, protective device B output Third Mate is respectively the normal of TJB1, TJB2 and TJB3
Contact is opened, the protective device C output Third Mate is respectively the normal opened contact of TJC1, TJC2 and TJC3, the TJA1, the TJB1
It is the TJA2, described with the DI1 of TJC1 electric tripping signal input DI point of the access ETS cabinet after parallel with one another
The DI2 of the electric tripping signal input DI point of the access ETS cabinet after the TJB2 and TJC2 is parallel with one another, the TJA3,
The DI3 of the electric tripping signal input DI point of the access ETS cabinet after the TJB3 and TJC3 is parallel with one another.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290669.9U CN208571580U (en) | 2018-08-10 | 2018-08-10 | A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290669.9U CN208571580U (en) | 2018-08-10 | 2018-08-10 | A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034541A (en) * | 2019-04-24 | 2019-07-19 | 南京泰润电力工程有限公司 | A kind of jump electric protection method of electromechanical linkage device |
| CN111946406A (en) * | 2020-07-27 | 2020-11-17 | 大唐东北电力试验研究院有限公司 | Thermal power plant ETS system shutdown button design method |
| CN112821355A (en) * | 2020-11-25 | 2021-05-18 | 华能海南发电股份有限公司东方电厂 | Generator-transformer unit protection combined-tripping steam turbine loop |
-
2018
- 2018-08-10 CN CN201821290669.9U patent/CN208571580U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034541A (en) * | 2019-04-24 | 2019-07-19 | 南京泰润电力工程有限公司 | A kind of jump electric protection method of electromechanical linkage device |
| CN110034541B (en) * | 2019-04-24 | 2021-10-01 | 南京泰润电力工程有限公司 | Electricity-jumping protection method of electromechanical interlocking device |
| CN111946406A (en) * | 2020-07-27 | 2020-11-17 | 大唐东北电力试验研究院有限公司 | Thermal power plant ETS system shutdown button design method |
| CN112821355A (en) * | 2020-11-25 | 2021-05-18 | 华能海南发电股份有限公司东方电厂 | Generator-transformer unit protection combined-tripping steam turbine loop |
| CN112821355B (en) * | 2020-11-25 | 2023-03-24 | 华能海南发电股份有限公司东方电厂 | Generator-transformer unit protection combined-tripping steam turbine loop |
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