CN108287491B - Shore power interlocking device - Google Patents
Shore power interlocking device Download PDFInfo
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- CN108287491B CN108287491B CN201810194931.8A CN201810194931A CN108287491B CN 108287491 B CN108287491 B CN 108287491B CN 201810194931 A CN201810194931 A CN 201810194931A CN 108287491 B CN108287491 B CN 108287491B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The embodiment of the invention discloses a shore power interlocking device, which comprises a closing detection module and a separating brake control module; the input end of the closing detection module is configured as an output end in the shore power box, and the output end of the closing detection module is in signal connection with the opening control module; the closing detection module is used for detecting an access signal of the shore power voltage of the shore power box and transmitting the access signal to the opening control module; the brake separating control module is configured between the shore power box and a load with preset capacity and is used for cutting off a power supply line between the shore power box and the load with preset capacity according to the access signal. The embodiment of the invention can solve the problem of load starting with preset capacity caused by the traditional human factors, and eliminates the potential safety hazard of the shore power system in the electrical principle.
Description
Technical Field
The embodiment of the invention relates to a ship power supply technology, in particular to a shore power interlocking device.
Background
The number of ships for loading and unloading cargoes by berthing in coastal and inland ports in China is huge each year, and along with the development of new energy electric ships, higher requirements are put forward on the ship power supply technology, and particularly, the ships need to supply power to life auxiliary equipment on the ships by using shore power every time the ships are unloaded by berthing. While the shore power of the electric ship is 160A capacity, only small daily loads such as household appliances including electric rice cookers and induction cookers can be supplied and distributed, relatively heavy loads exceeding a preset capacity such as bilge pumps with a capacity of about 35A are not suitable to be started by the shore power, otherwise, the relatively excessive current can cause severe fluctuation of a shore power system.
To solve this problem, a special nameplate is usually provided and is arranged at a conspicuous place to perform operational dispersion on the crew, and human factors often cause the start of a load with a preset capacity.
Disclosure of Invention
The invention provides a shore power interlocking device, which can solve the problem of load starting with preset capacity caused by traditional human factors and eliminate the potential safety hazard of a shore power system in an electrical principle.
The embodiment of the invention provides a shore power interlocking device, which comprises a closing detection module and a separating brake control module;
the input end of the closing detection module is configured as an output end in the shore power box, and the output end of the closing detection module is in signal connection with the opening control module; the closing detection module is used for detecting an access signal of the shore power voltage of the shore power box and transmitting the access signal to the opening control module;
the brake separating control module is configured between the shore power box and a load with preset capacity and is used for cutting off a power supply line between the shore power box and the load with preset capacity according to the access signal.
Optionally, the closing detection module includes: a voltage detection sub-module and a controlled switch sub-module;
the input end of the voltage detection sub-module is configured to be connected with the output end of the shore power box, and the output end of the voltage detection sub-module is connected with the enabling end of the controlled switch sub-module;
the voltage detection submodule is used for transmitting a control signal to an enabling end of the controlled switch submodule when the shore power voltage of the shore power box is detected to be in contact with the shore power;
the controlled switch sub-module is used for conducting a signal line according to the control signal so that the access signal is transmitted to the opening control module.
Optionally, the voltage detection submodule comprises a voltage transformer, and the controlled switch submodule comprises a relay;
the primary winding of the voltage transformer is connected to the output line of the shore power box in parallel, and the secondary winding of the voltage transformer is connected to the coil of the relay in parallel, so that when the shore power voltage is loaded on the primary winding of the voltage transformer, the voltage for closing the contact of the relay is transmitted to the coil of the relay through the secondary winding of the voltage transformer.
Optionally, the output end of the switch-on detection module is in signal connection with the switch-off control module in a wireless mode or a wired mode.
Optionally, when the switch-on detection module is connected with the switch-off control module through a wireless signal, the switch-on detection module comprises a wireless signal transmitting sub-module, and the switch-off control module comprises a wireless signal receiving sub-module; the wireless signal transmitting sub-module is used for transmitting the access signal to the wireless signal receiving sub-module.
Optionally, the wireless signal transmitting sub-module and the wireless signal receiving sub-module transmit wireless signals through a radio frequency signal, a network signal or a Subscriber Identity Module (SIM) card.
Optionally, the opening control module includes: a voltage transmission sub-module and a tripping sub-module;
the input end of the voltage transmission sub-module is in signal connection with the output end of the closing detection module, and the output end of the voltage transmission sub-module is electrically connected with the tripping sub-module; the voltage transmission submodule is used for transmitting tripping control voltage to the tripping submodule when the access signal is received;
the tripping submodule is configured between the voltage transmission submodule and a load with preset capacity and is used for cutting off a power supply line between the voltage transmission submodule and the load with preset capacity according to the tripping control voltage.
Optionally, the tripping submodule comprises a tripper and a breaker;
the input end of the release is connected with the output end of the voltage transmission submodule, the output end of the release is connected with the circuit breaker, and the circuit breaker is arranged between the output end of the release and a load with preset capacity; the release is used for performing a release action on the circuit breaker by an actuating mechanism of the release when the release control voltage transmitted by the voltage transmission submodule is loaded to a coil of the release.
According to the embodiment of the invention, the two modules of the device closing detection module and the opening control module for the shore power interlocking are arranged, and the access signal of the shore power voltage of the shore power box detected by the closing detection module is transmitted to the opening control module, so that the opening control module cuts off a power supply line between the shore power box and the load with preset capacity according to the access signal, thereby avoiding the load starting with preset capacity, solving the problem of load starting with preset capacity caused by the traditional human factors, and eliminating the potential safety hazard of a shore power system in an electrical principle.
Drawings
FIG. 1 is a schematic view of a shore power interlock device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a shore power interlock device according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another shore power interlock device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a shore power interlock device according to a third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a schematic structural diagram of a shore power interlocking device provided in a first embodiment of the present invention, which is suitable for a scenario in which a dock shore power box supplies power to a load on a ship, and as shown in fig. 1, the shore power interlocking device includes a closing detection module 1 and a opening control module 2;
the input end of the closing detection module 1 is configured to be connected with the output end of the shore power box 3, and the output end of the closing detection module 1 is in signal connection with the opening control module 2; the closing detection module 1 is used for detecting an access signal of the shore power voltage of the shore power box and transmitting the access signal to the opening control module 2.
The opening control module 2 is configured between the shore power box 3 and a load 4 with preset capacity, and is used for cutting off a power supply line between the shore power box 3 and the load 4 with preset capacity according to an access signal.
The shore power box is special ship power supply guarantee equipment arranged at a ship dock, a standard shore power interface for providing quick and safe for a port-leaning ship is arranged in the shore power box, and an output end in the shore power box is the standard shore power interface. Be provided with the switch board on boats and ships, the shore power voltage of shore power box distributes the load on the boats and ships with the electric energy through the switch board, and the switch board can realize protection, monitoring and the control to the load. The closing detection module can be arranged in the shore power box, and the opening control module can be arranged in the power distribution cabinet.
It is understood that the preset capacity is a preset load capacity that needs to disconnect the shore power box from the load, for example, the preset capacity may be set to be greater than 35A, and when the load capacity is greater than 35A, that is, the load is a load with the preset capacity, the shore power voltage of the shore power box cannot supply power to the load with the preset capacity. And if the preset capacity is not set to be less than 35A, when the load capacity is less than 35A, that is, the load is not the load of the preset capacity, the shore power voltage of the shore power hookup box can supply power to the load on the ship which is not of the preset capacity.
The embodiment of the invention discloses a device for interlocking by setting two modules of a closing detection module and a brake separating control module of a shore power, which are used for transmitting an access signal of the shore power voltage of a shore power box detected by the closing detection module to the brake separating control module so that the brake separating control module cuts off a power supply line between the shore power box and a load with preset capacity according to the access signal, thereby avoiding the starting of the load with preset capacity. The embodiment of the invention can solve the problem of load starting with preset capacity caused by the traditional human factors, and eliminates the potential safety hazard of the shore power system in the electrical principle.
Optionally, the output end of the closing detection module 1 is in signal connection with the opening control module 2 in a wired mode.
The wired signal connection is a signal line connection mode, the signal line can transmit sensing information and control information, and an optical fiber signal line with high anti-interference capability can be adopted. The output end of the closing detection module can transmit an access signal of the shore power box to the opening control module in a switching value mode, and the opening control module judges whether the switching value is on or off to perform corresponding control according to the received switching value.
Example two
Fig. 2 is a schematic structural diagram of a shore power interlock device according to a second embodiment of the present invention, where the present embodiment is further refined on the basis of the foregoing embodiment, as shown in fig. 2, and the optional closing detection module 1 includes: a voltage detection sub-module 11 and a controlled switch sub-module 12;
the input end of the voltage detection sub-module 11 is configured to be connected with the output end of the shore power box 3, and the output end of the voltage detection sub-module 11 is connected with the enabling end of the controlled switch sub-module 12;
the voltage detection sub-module 11 is used for transmitting a control signal to an enabling end of the controlled switch sub-module 12 when the shore power voltage of the shore power box 3 is detected to be in contact;
the controlled switch sub-module 12 is configured to turn on the signal line according to the control signal, so that the access signal is transmitted to the opening control module 2.
Optionally, the opening control module 2 includes: a voltage transmission sub-module 21 and a trip sub-module 22;
the input end of the voltage transmission sub-module 21 is in signal connection with the output end of the closing detection module 1, and the output end of the voltage transmission sub-module 21 is electrically connected with the tripping sub-module 22; the voltage transmission sub-module 22 is configured to transmit a trip control voltage to the trip sub-module 22 when receiving the access signal;
the trip sub-module 22 is disposed between the voltage transmission sub-module 21 and the load 4 with a preset capacity, and is used for cutting off a power supply line between the voltage transmission sub-module 21 and the load 4 with a preset capacity according to the trip control voltage.
The tripping submodule carries out tripping action according to the tripping control voltage in the power distribution cabinet on the ship, so that the shore power voltage of the shore power box is prevented from being transmitted to a load with preset capacity.
According to the embodiment of the invention, the two modules of the closing detection module and the opening control module are further refined, when the voltage detection sub-module receives the shore power voltage, the controlled switch sub-module is controlled to be closed, so that the access signal is transmitted to the voltage transmission sub-module, the voltage transmission sub-module controls the tripping sub-module to execute tripping action according to the received access signal, so that a power supply line between the shore power box and a load with preset capacity is cut off, the load with preset capacity is prevented from being started, the problem of load starting with preset capacity caused by traditional human factors is solved, and the potential safety hazard of a shore power system is eliminated from an electrical principle.
Fig. 3 is a schematic structural diagram of another shore power interlock provided in the embodiment of the present invention, as shown in fig. 3, in which the voltage detection submodule includes a voltage transformer 111, and the controlled switch submodule 12 includes a relay 121;
the primary winding of the voltage transformer 111 is connected in parallel to the output line of the shore power box, and the secondary winding of the voltage transformer 111 is connected in parallel to the coil of the relay 121, so that when the shore power voltage is applied to the primary winding of the voltage transformer 111, the voltage for closing the contact of the relay 121 is transmitted to the coil of the relay 121 through the secondary winding of the voltage transformer 111.
The voltage of the primary winding of the voltage transformer is shore power voltage, and the shore power voltage can be 380V alternating current voltage.
The trip sub-module 22 includes a trip 221 and a circuit breaker 222;
the input end of the release 221 is connected with the output end of the voltage transmission sub-module, the output end of the release 221 is connected with the circuit breaker 222, and the circuit breaker 222 is configured between the output end of the release 221 and a load with preset capacity; the trip unit 221 is configured to perform a trip action on the circuit breaker 222 by an actuator of the trip unit 221 when the trip control voltage transmitted by the voltage transmission sub-module 21 is applied to the coil of the trip unit 221.
Wherein, the voltage transmission submodule can be 24V direct-current voltage, a tripping device with tripping control voltage of 24V can be selected,
the embodiment of the invention further refines the shore electric locking device by a specific implementation mode, and the specific implementation mode of the embodiment is more clearly shown through specific electric elements, so that it can be understood that other electric elements capable of realizing the functions of any embodiment of the invention, such as devices, modules, sub-modules and the like, and the types of the corresponding electric elements are included in the scope of the invention.
It can be understood that the shore power interlocking device of the embodiment of the invention can be voltage control and current control, specifically, the closing detection module can comprise a current detection sub-module, the adaptive opening control module can further comprise a current transmission sub-module, the input end of the current transmission sub-module is connected with the current signal of the output end of the closing detection module by adopting a signal line, the output end of the current transmission sub-module is electrically connected with the tripping sub-module, the tripping control current is transmitted to the tripping sub-module, and the current transmission sub-module cuts off the power supply line of the shore power box and the load with preset capacity according to the tripping control current. The current control is similar to the voltage control, so as to avoid the problem that the shore power is transmitted to a load with preset capacity, which causes the load to start, and the unstable shore power system is caused, and the adaptive structure is changed, which is not described herein.
Example III
Fig. 4 is a schematic structural diagram of a shore power interlocking device according to a third embodiment of the present invention, as shown in fig. 4, where the present embodiment is further refined on the basis of the foregoing embodiment, specifically, in this embodiment, an output end of a closing detection module is connected to a brake release control module in a wireless manner, so that the shore power interlocking device according to the embodiment of the present invention has the foregoing structure (not described in detail), and should further specifically include:
when the closing detection module is in signal connection with the opening control module in a wireless mode, the closing detection module 1 comprises a wireless signal transmitting sub-module 13, and the opening control module 2 comprises a wireless signal receiving sub-module 23; the radio signal transmitting sub-module 13 is configured to transmit an access signal to the radio signal receiving sub-module 23.
Optionally, the wireless signal transmitting sub-module 13 and the wireless signal receiving sub-module 23 perform wireless signal transmission through a radio frequency signal, a network signal or a subscriber identity module SIM card.
For example, SIM cards may be installed on the transmitting sub-module and the receiving sub-module to establish a signal transmission manner similar to a call receiving manner, and a wireless signal transmission manner may be free from the influence of distance, while a wired signal transmission manner has a certain requirement on the length of a signal line.
It can be understood that when the signal transmission is performed in a wireless manner, the wireless signal transmitting sub-module and the wireless signal receiving sub-module are added in an adaptive manner. Meanwhile, the wireless signal transmission omits the complicated wiring, so that the problem of reduced safety performance of the signal wire in the surrounding environment such as severe weather can be avoided, or an alternative signal transmission mode can be provided faster when the signal wire is damaged.
It should be noted that, in the above embodiment of the shore power interlock device, each unit and module included are only divided according to the functional logic, but not limited to the above division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (5)
1. The shore power interlocking device is characterized by comprising a closing detection module and a separating brake control module;
the input end of the closing detection module is configured to be connected with the output end in the shore power box, and the output end of the closing detection module is in signal connection with the opening control module; the closing detection module is used for detecting an access signal of the shore power voltage of the shore power box and transmitting the access signal to the opening control module;
the brake separating control module is configured between the shore power box and a load with preset capacity and is used for cutting off a power supply line between the shore power box and the load with preset capacity according to the access signal;
the closing detection module comprises: a voltage detection sub-module and a controlled switch sub-module;
the input end of the voltage detection sub-module is configured to be connected with the output end of the shore power box, and the output end of the voltage detection sub-module is connected with the enabling end of the controlled switch sub-module;
the voltage detection submodule is used for transmitting a control signal to an enabling end of the controlled switch submodule when the shore power voltage of the shore power box is detected to be in contact with the shore power;
the controlled switch sub-module is used for conducting a signal line according to the control signal so as to enable the access signal to be transmitted to the opening control module;
the brake-separating control module comprises: a voltage transmission sub-module and a tripping sub-module;
the input end of the voltage transmission sub-module is in signal connection with the output end of the closing detection module, and the output end of the voltage transmission sub-module is electrically connected with the tripping sub-module; the voltage transmission submodule is used for transmitting tripping control voltage to the tripping submodule when the access signal is received;
the tripping submodule is configured between the voltage transmission submodule and a load with preset capacity and is used for cutting off a power supply line between the voltage transmission submodule and the load with preset capacity according to the tripping control voltage;
the tripping submodule comprises a release and a breaker;
the input end of the release is connected with the output end of the voltage transmission submodule, the output end of the release is connected with the circuit breaker, and the circuit breaker is arranged between the output end of the release and a load with preset capacity; the release is used for performing a release action on the circuit breaker by an actuating mechanism of the release when the release control voltage transmitted by the voltage transmission submodule is loaded to a coil of the release.
2. The apparatus of claim 1, wherein the voltage detection submodule comprises a voltage transformer and the controlled switch submodule comprises a relay;
the primary winding of the voltage transformer is connected to the output line of the shore power box in parallel, and the secondary winding of the voltage transformer is connected to the coil of the relay in parallel, so that when the shore power voltage is loaded on the primary winding of the voltage transformer, the voltage for closing the contact of the relay is transmitted to the coil of the relay through the secondary winding of the voltage transformer.
3. The device of claim 1, wherein an output end of the closing detection module is in signal connection with the opening control module in a wireless manner or a wired manner.
4. The apparatus of claim 3, wherein when the closing detection module is wirelessly signal-connected to the opening control module, the closing detection module comprises a wireless signal transmitting sub-module, and the opening control module comprises a wireless signal receiving sub-module; the wireless signal transmitting sub-module is used for transmitting the access signal to the wireless signal receiving sub-module.
5. The apparatus of claim 4, wherein the wireless signal transmitting sub-module and the wireless signal receiving sub-module perform wireless signal transmission through a radio frequency signal, a network signal, or a subscriber identity module SIM card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194931.8A CN108287491B (en) | 2018-03-09 | 2018-03-09 | Shore power interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194931.8A CN108287491B (en) | 2018-03-09 | 2018-03-09 | Shore power interlocking device |
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| CN108287491A CN108287491A (en) | 2018-07-17 |
| CN108287491B true CN108287491B (en) | 2023-09-26 |
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| CN201810194931.8A Active CN108287491B (en) | 2018-03-09 | 2018-03-09 | Shore power interlocking device |
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| CN108287491A (en) | 2018-07-17 |
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