CN110854994A - Rapid access device and method for mobile diesel generator set - Google Patents
Rapid access device and method for mobile diesel generator set Download PDFInfo
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- CN110854994A CN110854994A CN201911084661.6A CN201911084661A CN110854994A CN 110854994 A CN110854994 A CN 110854994A CN 201911084661 A CN201911084661 A CN 201911084661A CN 110854994 A CN110854994 A CN 110854994A
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- 238000010079 rubber tapping Methods 0.000 claims description 9
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 206010014357 Electric shock Diseases 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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Abstract
The invention provides a quick access device for a mobile diesel generating set, which is used for the mobile diesel generating set outside an electric plant and is matched with a circuit breaker which is used for connecting an emergency diesel generating set and an emergency safety bus together in the electric plant; the device comprises an outdoor junction box arranged outside an electric plant, a cable cabinet arranged in the electric plant and an emergency cable which is connected with the outdoor junction box and is coiled in the cable cabinet; after the emergency diesel generator set breaks down and a cable connected with the emergency diesel generator set on the circuit breaker is disconnected, the emergency cable in the cable cabinet is stretched towards the circuit breaker and is connected with one end, disconnected with the emergency diesel generator set, of the circuit breaker, and therefore the mobile diesel generator is connected with the emergency safety bus and starts to supply power. By implementing the invention, the access time of the mobile diesel generator set after an accident is effectively shortened and the manpower input of related work is reduced on the premise of not changing the space of the existing plant of the power plant.
Description
Technical Field
The invention relates to the technical field of mobile diesel generator set access, in particular to a device and a method for quickly accessing a mobile diesel generator set.
Background
After the fukushima nuclear accident, the reliability of emergency power supply is improved by additionally arranging a mobile emergency power supply in the domestic nuclear power plant. Under the working condition of over-design basis accident, the mobile emergency power supply can play a role in short-term power supply guarantee after the original mobile diesel generating set fails, and the consequence of serious accident is relieved. The nuclear power plant mobile emergency power supply mostly adopts the mobile diesel generating set, and under the working condition that the whole plant loses power and cannot be recovered for use in a short time, and the additional diesel generating set cannot be accessed, the medium-voltage mobile diesel generating set is manually accessed to the emergency medium-voltage bus, so that a power supply is provided for related loads.
At present, the access of a mobile diesel generator set mainly has two modes: 1) as shown in fig. 1, a medium voltage cable with enough length is pre-stored in an electric plant, cable connectors matched with an emergency switchboard and a diesel generating car are pre-manufactured at two ends of the cable, a reserved cable is laid to an incoming switch of the emergency switchboard along the stairs of the electric plant after an accident, the cable originally connected to the incoming switch is temporarily unfastened, and the reserved cable is connected and connected with the mobile diesel generating car; 2) as shown in fig. 2, the outer wall of the electric factory building is provided with a junction box, meanwhile, a circuit breaker special for the junction box is reserved for the emergency switchboard, cables between the junction box and the circuit breaker are laid in advance and are connected with two sides in a terminating mode, the mobile diesel generator set is disconnected after an accident, the mobile diesel generator set is connected with the outer wall of the electric factory building, and then the circuit breaker between the emergency switchboard and the junction box is closed.
However, the two access modes of the mobile diesel generator set have the following defects: in the first mode, because of the needs lay cable temporarily, it is more to drop into the manpower under the accident condition (if accomplish the access and need ten more people), has increased the emergent personnel's quantity of keeping watch during the nuclear power plant accident. According to statistics, the power plant still consumes long time (such as the access time is 2-6 hours), and is not beneficial to rescue optimization; in the second mode, 1 outlet interval needs to be added to the distribution board of the existing emergency bus of the nuclear power plant for installing the circuit breaker, the requirement on the plant space of the power plant is high, the space margin of an electrical plant of the nuclear power plant is small, and the arrangement space cannot meet the expansion requirement of the emergency distribution board.
Therefore, a quick access device for a mobile diesel generator set is urgently needed, the access time of the mobile diesel generator set after an accident is effectively shortened on the premise that the existing plant space of a power plant is not changed, and the manpower investment of related work is reduced.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a device and a method for quickly accessing a mobile diesel generating set, so that the access time of the mobile diesel generating set after an accident is effectively shortened and the manpower investment of related work is reduced on the premise of not changing the space of the existing plant of a power plant.
In order to solve the technical problem, the embodiment of the invention provides a mobile diesel generating set quick access device which is used for a mobile diesel generating set outside an electric plant and matched with a circuit breaker which is used for connecting an emergency diesel generating set and an emergency safety bus together in the electric plant;
the quick access device of the mobile diesel generating set comprises an outdoor junction box which is arranged outside an electric plant and is connected with the mobile diesel generating set through a tapping cable, wherein,
the emergency cable cabinet is arranged in an electric plant, one end of the emergency cable cabinet is connected with the outdoor junction box, and the other end of the emergency cable cabinet is coiled in the cable cabinet for a certain length; wherein,
emergent diesel generating set breaks down, and breaks off connect on the circuit breaker behind emergent diesel generating set's the cable, will the emergent cable orientation of coiling in the cable cabinet the circuit breaker stretch and with the disconnection has on the circuit breaker emergent diesel generating set's one end links to each other, realizes remove diesel generator with emergent safe generating line links to each other and the start-up power supply.
After the emergency diesel generator set recovers to be normal, the emergency cable is disconnected from the circuit breaker and faces the direction of the cable cabinet is recovered to the cable cabinet, the emergency cable is coiled in the cable cabinet, the circuit breaker is further connected with cables between the emergency diesel generator set, and the emergency diesel generator set is connected with the emergency safety bus and starts to supply power.
The embodiment of the invention also provides a quick access method of a mobile diesel generating set, which is realized on a quick access device of the mobile diesel generating set, which is used on the mobile diesel generating set outside an electric plant and is matched with a circuit breaker for connecting an emergency diesel generating set and an emergency safety bus together in the electric plant, wherein the quick access device of the mobile diesel generating set comprises an outdoor junction box which is arranged outside the electric plant and is connected with the mobile diesel generating set through a tapping cable, a cable cabinet which is arranged in the electric plant, and an emergency cable of which one end is connected with the outdoor junction box and the other end is coiled in the cable cabinet for a certain length; the method comprises the following steps:
acquiring the running state of the emergency diesel generator set; wherein the operating state is normal or faulty;
treat when emergent diesel generating set's running state is the trouble, the disconnection connect on the circuit breaker behind emergent diesel generating set's the cable, will the emergent cable orientation of coiling in the cable cabinet the circuit breaker stretch and with the disconnection has on the circuit breaker emergent diesel generating set's one end links to each other, realizes remove diesel generator and emergent safe generating line link to each other and start the power supply.
Wherein the method further comprises the steps of:
treat emergent diesel generating set resumes normal back, will emergent cable with the circuit breaker disconnection and orientation the cable cabinet direction is retrieved extremely coil in the cable cabinet, and further connect the circuit breaker with cable between the emergent diesel generating set realizes emergent diesel generating set with emergent safe generating set links to each other and starts the power supply.
The embodiment of the invention has the following beneficial effects:
1. on the premise of not changing the space of the existing power plant, the access time of the mobile diesel generating set after an accident is effectively shortened, and the manpower input of related work is reduced;
2. the invention does not additionally add a medium-voltage circuit breaker, thereby reducing the purchasing, operation and maintenance cost;
3. the installation of the related access equipment can be carried out off-line during the power generation of the unit, the normal operation of the existing system of the power plant is not influenced, and meanwhile, the junction box is not in solid connection with the electrified emergency bus during the normal operation of the unit, so that the risk of electric shock of personnel caused by misoperation is avoided to the maximum extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a schematic connection diagram of an access mode of a mobile diesel generator set in the prior art;
FIG. 2 is a schematic connection diagram of another access mode of a mobile diesel generator set in the prior art;
fig. 3 is a schematic connection diagram of the mobile diesel generator set quick access device provided by the embodiment of the invention, applied to access of a mobile diesel generator set;
fig. 4 is a flowchart of a method for quickly accessing a mobile diesel generator set according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 3, in the embodiment of the present invention, the proposed mobile diesel generator set fast access device is used on a mobile diesel generator set G outside an electrical plant, and is matched with a circuit breaker J in the electrical plant, which connects an emergency diesel generator set EDG and an emergency safety bus M1 together;
the quick access device of the mobile diesel generator set comprises an outdoor junction box 1 which is arranged outside an electric factory and is connected with the mobile diesel generator set G through a tapping cable L1, wherein,
the emergency cable cabinet is characterized by further comprising a cable cabinet 2 arranged in the electric plant and an emergency cable L0, wherein one end of the emergency cable is connected with the outdoor junction box, and the other end of the emergency cable is coiled in the cable cabinet for a certain length; wherein,
emergent diesel generating set EDG breaks down to break off and connect emergent diesel generating set EDG's cable LK back on the circuit breaker J, stretch the emergent cable L0 who coils in the cable cabinet 2 towards circuit breaker J and with circuit breaker J on the disconnection have emergent diesel generating set EDG's one end link to each other, realize that mobile diesel generator G links to each other and starts the power supply with emergent safe generating line M1.
It should be noted that the mobile diesel generator G is connected to the emergency safety bus M1 and routed as mobile diesel generator G- > tapping cable L1- > emergency cable L0- > breaker J- > emergency safety bus M1.
It can be understood that the outdoor junction box 1 and the cable cabinet 2 are both insulating, waterproof and dustproof boxes or cabinets. All cables are insulated cables.
In the embodiment of the invention, after the emergency diesel generator set EDG is recovered to be normal, the emergency cable L0 and the breaker J1 are disconnected, and the emergency cable L0 and the breaker J1 are recovered to the cable cabinet 2 in the direction of the cable cabinet 2 to be coiled, and the cable LK between the breaker J and the emergency diesel generator set EDG is further connected, so that the emergency diesel generator EDG is connected with the emergency safety bus M1, and the emergency diesel generator set EDG is started to supply power. The emergency diesel generator EDG is connected with the emergency safety bus M1 through a route of EDG- > breaker J- > emergency safety bus M1.
An application scenario of the quick access device for the mobile diesel generator set in the embodiment of the invention is further described, which specifically comprises the following steps:
set up outdoor junction box 1 at power plant's factory building outer wall to lay outdoor junction box 1 to emergent safety bus M1's emergency cable L0 in advance and finish, with intermediate cable L0 one side termination to outdoor junction box 1 in female arranging, the opposite side is prefabricated well with reserve usefulness behind the joint of female row matching in the emergent distribution board, enough length is reserved to the cable of factory building side, simultaneously in the room of the emergent distribution board of electric factory building installation, add a cable cabinet 2. And coiling the emergency cable L0 pre-coated on the factory building side, and storing the emergency cable in the newly added cable cabinet 2 daily.
After an EDG accident of the emergency diesel generator set occurs, the following operations are executed:
in the factory building: firstly, confirming and isolating the EDG fault of the emergency diesel generator set, opening a rear cover plate at the interval of an EDG incoming line breaker J of the emergency diesel generator set on an emergency safety bus M1, and unlocking the original incoming line cable LK connection between the EDG fault and the rear cover plate. Then, the emergency cable L0 in the cable cabinet 2 is drawn out and pulled to the interval to be connected with the breaker J;
outside the plant: the mobile diesel generator set G is connected to the outdoor junction box 1 through a tapping cable L1, and after the internal and external connections of the plant are completed, the mobile diesel generator set G is started to supply power to the emergency safety bus M1.
In a similar way, after the EDG of the emergency diesel generator set is recovered to be normal, the following operations are executed:
outside the plant: disconnecting a tapping cable L1 between the mobile diesel generator set G and the outdoor junction box 1;
in the factory building: firstly, after confirming that the EDG of the emergency diesel generator set is recovered to be normal, opening a rear cover plate at the interval of an EDG incoming line breaker J of the emergency diesel generator set on an emergency safety bus M1, and disconnecting an emergency cable L0 in a cable cabinet 2 from the breaker J; then, the emergency cable L0 in the cable cabinet 2 is recovered to the cable cabinet 2 for coiling; and finally, recovering the connection of the cable LK between the EDG and the breaker J, and starting the EDG to supply power to the emergency safety bus M1 after the internal and external connections of the plant are completed.
As shown in fig. 4, in an embodiment of the present invention, a method for quickly connecting a mobile diesel generator set is provided, which is implemented on a mobile diesel generator set used outside an electrical plant and matched with a circuit breaker in the electrical plant, which connects an emergency diesel generator set with an emergency safety bus, where the mobile diesel generator set quick connection device includes an outdoor junction box which is arranged outside the electrical plant and connected with the mobile diesel generator set through a tapping cable, a cable cabinet which is arranged in the electrical plant and one end of which is connected with the outdoor junction box, and an emergency cable which is coiled in the cable cabinet for a certain length; the method comprises the following steps:
step S1, obtaining the running state of the emergency diesel generator set; wherein the operating state is normal or faulty;
step S2, when the running state of the emergency diesel generator set is a fault, the emergency diesel generator set is disconnected, the emergency cable coiled in the cable cabinet is oriented towards the circuit breaker, and the circuit breaker is stretched and disconnected with one end of the emergency diesel generator set, so that the mobile diesel generator is connected with the emergency safety bus and starts to supply power.
Wherein the method further comprises the steps of:
treat emergent diesel generating set resumes normal back, will emergent cable with the circuit breaker disconnection and orientation the cable cabinet direction is retrieved extremely coil in the cable cabinet, and further connect the circuit breaker with cable between the emergent diesel generating set realizes emergent diesel generating set with emergent safe generating set links to each other and starts the power supply.
The embodiment of the invention has the following beneficial effects:
1. on the premise of not changing the space of the existing power plant, the access time of the mobile diesel generating set after an accident is effectively shortened, and the manpower input of related work is reduced;
2. the invention does not additionally add a medium-voltage circuit breaker, thereby reducing the purchasing, operation and maintenance cost;
3. the installation of the related access equipment can be carried out off-line during the power generation of the unit, the normal operation of the existing system of the power plant is not influenced, and meanwhile, the junction box is not in solid connection with the electrified emergency bus during the normal operation of the unit, so that the risk of electric shock of personnel caused by misoperation is avoided to the maximum extent.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (4)
1. A quick access device for a mobile diesel generating set is used on the mobile diesel generating set outside an electric plant and is matched with a circuit breaker which connects an emergency diesel generating set and an emergency safety bus together in the electric plant;
the quick access device of the mobile diesel generating set comprises an outdoor junction box which is arranged outside an electric plant and is connected with the mobile diesel generating set through a tapping cable, and is characterized in that,
the emergency cable cabinet is arranged in an electric plant, one end of the emergency cable cabinet is connected with the outdoor junction box, and the other end of the emergency cable cabinet is coiled in the cable cabinet for a certain length; wherein,
emergent diesel generating set breaks down, and breaks off connect on the circuit breaker behind emergent diesel generating set's the cable, will the emergent cable orientation of coiling in the cable cabinet the circuit breaker stretch and with the disconnection has on the circuit breaker emergent diesel generating set's one end links to each other, realizes remove diesel generator with emergent safe generating line links to each other and the start-up power supply.
2. The quick access device for the mobile diesel generator set according to claim 1, wherein after the emergency diesel generator set is recovered to be normal, the emergency cable is disconnected from the circuit breaker and is recovered to the cable cabinet in the direction of the cable cabinet to be coiled, and the cable between the circuit breaker and the emergency diesel generator set is further connected, so that the emergency diesel generator is connected with the emergency safety bus and starts to supply power.
3. A mobile diesel generating set quick access method is characterized in that the method is realized on a mobile diesel generating set quick access device which is used on a mobile diesel generating set outside an electric factory building and is matched with a circuit breaker which connects an emergency diesel generating set and an emergency safety bus together in the electric factory building, the mobile diesel generating set quick access device comprises an outdoor junction box which is arranged outside the electric factory building and is connected with the mobile diesel generating set through a tapping cable, a cable cabinet which is arranged in the electric factory building, and an emergency cable of which one end is connected with the outdoor junction box and the other end is coiled in the cable cabinet; the method comprises the following steps:
acquiring the running state of the emergency diesel generator set; wherein the operating state is normal or faulty;
treat when emergent diesel generating set's running state is the trouble, the disconnection connect on the circuit breaker behind emergent diesel generating set's the cable, will the emergent cable orientation of coiling in the cable cabinet the circuit breaker stretch and with the disconnection has on the circuit breaker emergent diesel generating set's one end links to each other, realizes remove diesel generator and emergent safe generating line link to each other and start the power supply.
4. The mobile diesel generator set fast access method as set forth in claim 3, wherein the method further comprises the steps of:
treat emergent diesel generating set resumes normal back, will emergent cable with the circuit breaker disconnection and orientation the cable cabinet direction is retrieved extremely coil in the cable cabinet, and further connect the circuit breaker with cable between the emergent diesel generating set realizes emergent diesel generating set with emergent safe generating set links to each other and starts the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911084661.6A CN110854994A (en) | 2019-11-08 | 2019-11-08 | Rapid access device and method for mobile diesel generator set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911084661.6A CN110854994A (en) | 2019-11-08 | 2019-11-08 | Rapid access device and method for mobile diesel generator set |
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| CN110854994A true CN110854994A (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114172261A (en) * | 2021-11-02 | 2022-03-11 | 苏州热工研究院有限公司 | Nuclear power plant emergency power supply system and control method |
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Application publication date: 20200228 |