CN209896694U - Shipborne low-voltage shore power box - Google Patents
Shipborne low-voltage shore power box Download PDFInfo
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- CN209896694U CN209896694U CN201920245230.2U CN201920245230U CN209896694U CN 209896694 U CN209896694 U CN 209896694U CN 201920245230 U CN201920245230 U CN 201920245230U CN 209896694 U CN209896694 U CN 209896694U
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Abstract
The utility model discloses a ship-borne low pressure bank electronic box, including circuit breaker Q, standard bank electricity connector XP, fuse wiring terminal row 1X, wiring terminal row 2X, the protection release, LED pilot lamp 1H, LED pilot lamp 2H, marine button SC, marine button S0, single-phase voltage monitor ESS, exchange auxiliary relay 1KA, direct current auxiliary relay 2KA, marine auto-lock type button S, marine fuse 1F, marine fuse 2F, marine fuse 3F, marine fuse 4F, zener diode 1V, zener diode 2V, zener diode 3V, zener diode 4V. The utility model discloses shipborne low pressure bank electricity case accords with relevant standard and technical rule of international, internal bank electricity power supply unit, ensures that boats and ships are safe and convenient the bank electricity of using of connecing during the harbor.
Description
Technical Field
The utility model relates to a ship-borne low pressure bank electricity case belongs to boats and ships electrical equipment technical field.
Background
In recent years, national ecological culture strategies and laws and regulations have put new and higher demands on the use of shore power for port-berthing ships. The regulation of the air pollution prevention and control law of the people's republic of China, which is implemented in 2016, 1 month and 1 day: "newly-built wharves should plan, design and build shore-based power supply facilities; the built wharf should gradually implement shore-based power supply facility modification. The shore power should be preferentially used after the ship is in port. The ecological environment protection planning of the State Council of China, the comprehensive working scheme of energy conservation and emission reduction of thirteen five and the implementation scheme of the special action for preventing and controlling the pollution of ships and harbors of the department of transportation (2015-2020) all put forward definite requirements for promoting the ships to use shore power for harboring. In order to deeply implement the energy conservation and emission reduction target of the national port, reduce the environmental pollution of the port area and promote the development of the shore connection technology of the ships in the port, an implementation scheme (a file No. 2018 & 168) of the ship atmospheric pollutant emission control area is also published in 12 and 6 months in 2018 by the transportation department, and the shore power using requirement of the ships in the port is provided.
The voltage grade of a ship power system is low voltage, shore power required to be connected in ship harbor is low voltage generally, and particularly, alternating current low-voltage shore power is basically required to be connected for small and medium-sized ships and inland river ships.
The international and domestic standards for using low-voltage shore power include: section 3 of port electrical facilities issued by the international electrotechnical commission 2014: general requirements of Low Voltage coast Connection (LVSC) Systems (IEC/PAS 80005-3-2014) (Utility connectivity in port Part 3: Low Voltage Shore Connection (LVSC) Systems-General requirements), technical Specifications for Port Shore Power installations (Q/GDW 11468-2016) issued by national grid company, and technical Specification for modification 2018 of river Ship legal inspection in Ship and offshore facility legal inspection rules recently issued by the Central office of the people's republic of China, all put forward new requirements for shipborned AC Low Voltage Shore Power Systems. With the stricter regulations on exhaust emission of ships during port-berthing in China and countries in Europe and America, the use of shore power systems for berthing ships becomes a great development trend in shipping industry.
However, the on-board low-voltage shore power box product in China is the CB373-85 standard shore power box which is published by the 'national ship standardization and technology committee' in 10 months of 1985, and the standard is formulated according to relevant regulations of IEC92 publication (ship electrical equipment) 201 and 1980 edition 302, most of the types, basic parameters and technical requirements, and the rated values, technical requirements, interface standards and other items of the standard do not accord with relevant standards and technical rules of international and domestic shore power supply devices.
Although a plurality of shore power equipment are built in the port, the actual development of the shore power of the port is not ideal at present, and the use rate of the shore power is low. Tens of faults occur in the country from 2017, so that the circuit on the ship is tripped or the motor is damaged, the low-voltage interfaces are inconsistent, and the utilization rate of shore power is greatly influenced.
In order to ensure safe and convenient shore power connection of a ship during port berthing, a ship-mounted low-voltage shore power box needs to be developed, so that the electrical parameters and functions of the ship-mounted low-voltage shore power box meet the requirements of international and domestic related standards, and the ship-mounted low-voltage shore power box can replace a shore power box designed and manufactured according to the CB373-85 standard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ship-borne low pressure bank electricity case accords with relevant standard and technical rule of international, internal bank electricity power supply unit, ensures that boats and ships are safe and convenient the bank electricity of using of connecing during the port of berthing.
The purpose of the utility model is realized through the following technical scheme:
a ship-borne low-voltage shore power box comprises a circuit breaker Q, a standard shore power connector XP, a fuse wiring terminal row 1X, a wiring terminal row 2X, a protection release, an LED indicator lamp 1H, LED indicator lamp 2H, a ship button SC, a ship button S0, a single-phase voltage monitor ESS, an alternating-current intermediate relay 1KA, a direct-current intermediate relay 2KA, a ship self-locking button S, a ship fuse 1F, a ship fuse 2F, a ship fuse 3F, a ship fuse 4F, a Zener diode 1V, a Zener diode 2V, a Zener diode 3V and a Zener diode 4V; the incoming line termination of circuit breaker Q bank electricity power N line, L line, the PE line termination bank electricity power of the PE of on-board low-voltage bank electricity case, circuit breaker Q ' S the inlet wire termination protection release, the outlet terminal output bank electricity of protection release, the L line of bank electricity power, N line connect marine fuse 3F, marine fuse 4F ' S inlet wire end respectively, and the both ends of LED pilot lamp 2H connect marine fuse 3F, marine fuse 4F ' S outlet terminal respectively, and one end of marine button S0 ' S normally closed contact connects marine fuse 4F ' S outlet terminal, and another termination circuit breaker Q ' S the one end of undervoltage coil YU of marine button S0 ' S normally closed contact, direct current auxiliary relay 2KA ' S the other end series connection normally open contact, the normally closed contact of alternating current auxiliary relay KA 1KA, behind the normally open contact of single-phase voltage monitor ESS through binding post 2X ' S terminal number 4, The No. 3 end is connected with the outlet end of a marine fuse 3F, the No. 1 end of a connecting terminal row 2X is connected with the outlet end of the marine fuse 4F, the No.2 end of the connecting terminal row 2X is connected between a marine button SC and a closing coil YC of a breaker Q, one end of a normally open contact of the marine button SC is connected with the outlet end of the marine fuse 4F, the other end of the normally open contact of the marine button SC is connected with one end of the closing coil YC of the breaker Q, the other end of the closing coil YC of the breaker Q is connected with one end of a normally closed auxiliary contact of the breaker Q, the other end of the normally closed auxiliary contact of the breaker Q is connected between an undervoltage coil YU and a normally open contact of a direct current intermediate relay 2KA, the L end and the N end of the marine fuse 3F and the outlet end of the marine fuse 4F are respectively connected with the L end and the, the cathode of a Zener diode 3V is connected with the cathode of a Zener diode 4V, the anode of a Zener diode 2V is connected with the anode of the Zener diode 4V, the cathode of the Zener diode 2V is connected with the cathode of a Zener diode 1V, the anode of the Zener diode 1V is connected with a hull ground E, a normally open contact of an alternating current intermediate relay 1KA and a normally open contact of a direct current intermediate relay 2KA are connected in parallel, one end of a parallel circuit is connected with an N line of a shore power supply, the other end of the parallel circuit is connected with one end of a coil of the alternating current intermediate relay 1KA, the other end of the coil of the alternating current intermediate relay 1KA is connected between the Zener diode 2V and the Zener diode 4V, the coil of the direct current intermediate relay 2KA and an LED indicator lamp 1H are connected in parallel, one end of the parallel circuit is connected with the output, The normally closed contact of the marine self-locking button S is connected with the output negative end of a single-phase voltage monitor ESS, the output positive end and the output negative end of the single-phase voltage monitor ESS are connected with a marine power supply DC24V through a marine fuse 1F and a marine fuse 2F, and the outputs of the two ends of the normally closed contact of the direct current intermediate relay 2KA are connected with an alarm circuit.
The purpose of the utility model can be further realized through the following technical measures:
the ship-borne low-voltage shore power box further comprises a surge protector SPD, wherein the N end of the surge protector SPD is connected with an N wire of a shore power supply through a fuse, the L end of the surge protector SPD is connected with an L wire of the shore power supply through the fuse, and the PE end of the surge protector SPD is grounded.
Aforementioned shipborne low-voltage shore power box still includes multi-functional strapping table P, current transformer 1T installs in the leading-out terminal of protection release, detects the leading-out terminal electric current of protection release, a termination of current transformer 1T secondary side is multi-functional strapping table P's I end, another termination of current transformer 1T secondary side is multi-functional strapping table P's I end0And the N end and the L end of the multifunctional meter P are respectively connected with the N line and the L line of the wire outlet end of the protection release after passing through the fuse.
The aforesaid ship-borne low pressure bank electricity case, wherein the annex of circuit breaker Q disposes residual current protector.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a multi-functional low pressure bank electronic box of shipborne, its type, basic parameter, technical requirement all accord with IEC/PAS 80005-3-2014 international standard and the relevant requirement of "boats and ships and sea facilities legal inspection rule inland river boats and ships legal inspection technical rule 2018 revise the notice" that china's maritime office published, the interface that ship bank connects satisfies IEC/ISO/IEEE 80005-1-2012, IEC/PAS 80005-3-2014, the requirement of Q/GDW 11468-2016; and complete functions, simple structure, less maintenance and uniform spare parts.
Drawings
FIG. 1 is a circuit diagram of a first embodiment of a three-phase low-voltage shore power box;
FIG. 2 is a circuit diagram of a second embodiment of the three-phase low-voltage shore power box;
FIG. 3 is a circuit diagram of a third embodiment of the three-phase low-voltage shore power box;
FIG. 4 is a circuit diagram of a first embodiment of an automatic positive phase sequence selection three-phase low-voltage shore power box;
FIG. 5 is a circuit diagram of a second embodiment of the automatic positive phase sequence selection three-phase low-voltage shore power box;
FIG. 6 is a circuit diagram of a third embodiment of an automatic positive phase sequence selection three-phase low-voltage shore power box;
FIG. 7 is a circuit diagram of a first embodiment of a single-phase low-voltage shore power box;
FIG. 8 is a circuit diagram of a second embodiment of the single-phase low-voltage shore power box;
FIG. 9 is a circuit diagram of a third embodiment of the single-phase low-voltage shore power box;
FIG. 10 is a circuit diagram of a single-phase low-voltage shore power box with an electric leakage and lightning protection and metering device;
fig. 11 is a circuit diagram of a three-phase low-voltage shore power box with a lightning protection and metering device.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1-11, are a number of specific embodiments of the present invention.
1. About bank electricity case wiring mode:
the shore power box shown in fig. 1, 4 and 7 is provided with a standard connector XP and a wiring board at the same time, and is suitable for various ships to access shore power at ports at home and abroad; the shore power box shown in fig. 2, 5 and 8 only has a connection bar for connecting shore power, which is one of the methods for connecting the shore power to a ship allowed (except for a tourist ship) in the inland river ship legal inspection technical rule 2018 modification notice published by the maritime office of the people's republic of china recently; the shore power box shown in fig. 3, 6 and 9 adopts a standard connector XP for a shore line cable to be installed and a standard connector XS for connecting shore power, is suitable for being specially used for a cruise ship, and can also be used for other ships.
The components in fig. 1-11 are standardized and commonly used products approved by classification society for maintenance, and the names and specifications of some components are shown in table 1.
TABLE 1 list of names and specifications of components of low-voltage shore power box
| Code number | Name (R) | Specification of |
| 1Q、2Q | Plastic case circuit breaker for ship | Rated voltage, current of shell frame, YU and YC and the like according to the specification of shore power box |
| XP/XS | Standard shore power connector | The standard of IEC/PAS 80005-3 and IEC60309-2 is met, and the rated voltage and the rated current are in accordance with the specification of a shore power box |
| 1KA | AC intermediate relay | The coil voltage is less than or equal to AC12V, the rated working current is more than or equal to 3A, 1 is normally open and 3 is normally closed |
| 2KA | DC intermediate relay | Coil voltage DC24V, rated working current is not less than 3A, 3 is normally open and 1 is normally closed |
| 1X | Fuse terminal row | Rated current 5A, 1-8F |
| 2X | Terminal block | Rated |
| 1H | LED indicator light | Rated voltage 24V, white |
| 2H | LED indicator light | Rated voltage according to shore power voltage class, red |
| 1V--4V | Zener diode | Stable voltage is less than or equal to 24V, stable current is more than or equal to 1A, and dynamic resistance is less than or equal to 5 ohm |
| 1-2MPS | Multifunctional monitoring relay | The output relay has the functions of monitoring phase sequence, phase loss, overvoltage and undervoltage, and acts when the positive phase sequence and the voltage are normal |
| ESS | Single-phase voltage monitor | Operating voltage DC24V, monitoring the measuring voltage range according to rated voltage of shore power box |
| SC、S0 | Marine button | Rated voltage is according to the specification of a shore power box, 1 normal open and normally closed, 5A, 1 for red and green |
| SPD | Surge protectorProtector (lightning protection) device | The maximum continuous working voltage and the combination mode are according to the specification of a shore power box and the voltage protection level is 3.0kV |
| F1-F3 | Screw type fuse for ship | Rated current 60A, fusible core 50A |
| 1-3T | Current transformer | The primary current is according to the specification of a shore power box, the secondary current is 5A or according to the requirements of a multifunctional meter |
| P | Multifunctional meter | Measuring parameters of active and reactive electric quantities, voltage, frequency, current, power factor, etc |
| S | Self-locking button for ship | Rated voltage is according to the specification of a shore power box, 1 is normally open, 1 is normally closed, and 5A |
2. Electrical characteristics of the low-voltage shore power box:
2.1 rating of multifunctional Low-Voltage Shore Power Box
2.1.1 the rated voltage, the rated current and the pole number all accord with relevant international and domestic standards and interface specifications and meet the requirements of ship construction specifications. The general requirements, function definitions, electrical parameters, structural dimensions and the like of the specified port shore power supply box are described in the specification Q/GDW 11468-2016 by national grid corporation, and reference IS mainly made to IEC/IS0/IEEE80005-1-2012, GB/T30845.1-2014 and GB/T30845.2-2014 standards, and the structural dimensions of the plug and the socket of the low-voltage shore power box conform to the structural dimension requirements of annex a in JT/T814.2-2012. Therefore, the utility model discloses low pressure bank electricity case can be general in international harbour, considers special naval vessel needs, has increased optional item in rated voltage, rated current.
2.1.2 rated values of the maximum voltage and the current of the low-voltage shore power connector of the multifunctional low-voltage shore power box are matched with the grade of a port power connection box specified by Q/GDW 11468-2016, and the rated values are divided into two grades:
the three-phase low-voltage shore power box has the advantages that rated voltage (line voltage) of the three-phase low-voltage shore power box is 400V or 500V alternating current, rated frequency is 50 Hz-60 Hz, pole number is 3P + N + PE, rated current is 250A or 420A, and electrical parameters and functions of the three-phase low-voltage shore power box refer to electrical parameters and function requirements in IEC/PAS 80005-3-2014; (alternative nominal line voltages are 415V, 440V, 690V, 1150V for ac line voltage and alternative nominal currents 630A, 800A, 1000A, 1250A, 1600A).
The rated voltage of the small-capacity low-voltage shore power box is alternating current 220V (phase voltage) or 380V (line voltage), the rated frequency is 50 Hz-60 Hz, the pole number is 1P + N + PE (small-capacity single phase) or 3P + N + PE (small-capacity three phase), the rated current is 32A or 125A, and the technical requirements refer to the technical requirements of the largest alternating current 125A in IEC 60309-1-2012 and IEC 60309-2-2012 and the following interfaces; (the selectable rated line voltages of the small-capacity three-phase low-voltage shore power box are 415V, 440V and 690V, and the selectable rated current is 160A).
2.2 the main switch of the low-voltage shore power box adopts a marine molded case circuit breaker (various specifications are fixed, 630A and below are plug-in type).
2.2.1 major standards to which circuit breakers need to comply
The circuit breaker and accessories thereof are based on the international IEC60947-2 standard and related instructions, and comprise a low voltage instruction LowVoltage directives (LVD) No.2006/95/CE and an electromagnetic compatibility instruction (EMC) No.89/336 EEC;
the safety and the reliability of the operation are in accordance with the IEC60073 and IEC60417-2 standards;
the isolation performance of the three-core-type transformer is in accordance with the IEC60947-2 standard;
the protection grade is according to the IEC 60529 standard;
the electromagnetic compatibility meets the IEC60947-2 standard;
sixthly, the vibration resistance can meet the standard of IEC 60068-2-27;
the peace climate adaptability is in accordance with IEC60068-2-30 standard;
and obtain approval from classification societies.
2.2.2 Chassis Current (Iu) and rated Current (In)
The circuit breakers Iu of the three-phase low-voltage shore power box are 250A, 400A and 630A, the In is 63-250A, 320-630A, (the selected Iu can be 800A, 1000A, 1250A and 1600A, and the In can be 630-800A and 800-1600A);
a breaker Iu of the low-voltage shore power box with small capacity is 160A, and In is 16-160A.
2.2.3 parts of circuit breaker (optional parts except standard configuration)
The undervoltage release is automatically disconnected when the voltage drops to rated voltage of 0.70-0.35 of the rated value of the undervoltage release;
the auxiliary contact 1 is normally open and normally closed;
the electric operating mechanism or the electromagnetic coil operating mechanism is provided with an operating handle;
a short circuit and overcurrent protector (a thermal magnetic release, an intelligent electronic release and an intelligent release are optional);
the lengthened front wiring terminal or the lengthened and expanded front wiring terminal is provided with a terminal cover plate;
sixthly, providing a residual current release (which can be selected when an electric leakage protection function is required);
2.2.4 breaking Capacity
16kA, 25kA, 36kA, 50kA, 70kA, 85kA, 120kA and 200kA are suitable for different shell frame currents and are optional as required.
2.3 connection mode of incoming and outgoing cables
2.3.1 three connection modes of incoming cable
The shore power box specified in inland river ship statutory inspection technical rule 2018 modification notice released recently by the maritime work office of the people's republic of China shall have: a suitable socket (cruise ship) or terminal (other than a cruise ship) for connecting a flexible cable and a ground terminal connecting the hull to ground (shore or neutral). For overcoming inlet wire cable and bank electronic box interface mode inconsistent, or because of the standard connector that optional rated current does not have corresponding specification at present temporarily, and use the bank electricity when influencing boats and ships and berth, the utility model designs a three kinds of modes of inlet wire cable are connected to the bank electronic box, can supply to choose for use:
the incoming line of the shore power box has two connection modes of a standard connector and a wiring row (which are universal for domestic and foreign ports), and the incoming line of the shore power box has the following characteristics in circuit diagrams 1, 4 and 7 in fig. 1-9: firstly, connectors meeting IEC/PAS 80005-3-2014, IEC 60309-2-2012 and JT/T814.2-2012 standards are used for splicing shore power incoming cables, and secondly, a connection mode is adopted for connecting the shore power incoming cables with cable wiring terminals and a lengthened and expanded front wiring bar of a circuit breaker;
secondly, the shore power box only has a connection row connection mode (only partial ports at home and abroad can be used), and cable connection terminals for shore power incoming cables are connected with the lengthened front connection row of the circuit breaker as shown in circuit diagrams 2, 5 and 8 in figures 1-9;
the shore power box only has a connector connection mode (special for a cruise ship) meeting the international standard, as shown in figure 1-
The circuits of fig. 9, fig. 3, 6 and 9, provide that shore power incoming cables are connected with standard connectors.
2.3.2 land-ground (PE) line connection
A PE wiring stud 1 (more than or equal to M10mm) electrically connected with the box shell is arranged at a position convenient for wiring of an incoming cable in the shore power box and is used for connecting a shore-based ground wire (PE) with a ship ground (E) through a standard connector or directly.
2.3.3 Shore power box outlet connection mode
And all outgoing cables of the shore power box are connected with the lengthened or lengthened extended front connecting bar of the circuit breaker by using cable connecting terminals.
2.4 safety protection function of shore power box
The protection circuit has the functions of short circuit, overload, overvoltage, undervoltage and open phase protection;
the ship land (E) and the shore land (PE) have the equipotential protection function;
the functions of remote control opening/closing and emergency stop are achieved;
an electrical interlocking function;
fifthly, carrying out a shore power and ship power phase sequence detection function;
sixthly, automatically selecting a phase sequence (optional), referring to fig. 4, 5 and 6;
the quads have a lightning protection function (optional), see fig. 10, 11;
and shore power indication and electrical parameter display and metering functions (optional), see fig. 10, 11;
the self-sustaining skin has an electric leakage protection function (optional).
3. Electric principle of the low-voltage shore power box:
3.1 the electrical principle of the three-phase low-voltage shore power box is illustrated by figure 4:
if the potential difference between the shore base (PE) and the ship hull ground (E) is within an allowable range, when the ship emergency power supply DC24V is switched on, the indicator lamp 1H is turned on, the direct-current relay 2KA is attracted, and the movable contact 3 is respectively switched on: firstly, a 1KA coil loop is connected to enable equipotential protection to enter a monitoring state, secondly, a closing loop of a shore power box circuit breaker is connected, thirdly, an undervoltage loop of the shore power box circuit breaker is connected to allow the shore power box circuit breaker to be closed, and a 2KA dynamic-breaking contact breaks an alarm output; if the interlock function is not required, all of 3-4, 5-6, 7-8 of terminal block 2X are shorted.
After shore power supply inserts shore power box, pilot lamp 2H is bright, and positive phase sequence is decided to the hypothesis boats and ships electric wire netting, and whether multi-functional monitoring relay 1MPS and 2MPS monitor shore power box circuit breaker 1Q and 2Q's three-phase voltage accord with requirements such as positive phase sequence respectively, if 1MPS detects 1Q three-phase voltage and accords with the requirement, the output relay action of 1MPS, its dynamic contact switches on respectively: firstly, a 1YC loop of a 1Q closing coil is switched on, secondly, a 1YU loop of a 1Q undervoltage coil is switched on, and the 1Q is allowed to be closed; the 2MPS output relay which detects that the 2Q three-phase voltage is in a reverse phase sequence does not act, a 2YC loop of the 2Q closing coil and a 2YU loop of the undervoltage coil are not communicated, and the 2Q closing is not allowed;
and a closing coil 1YC of the closing button SC and 1Q is electrified to act on 1Q closing, a movable breaking contact 1Q at the position after closing disconnects a 1YC loop, an auxiliary movable breaking contact 1Q disconnects a 2Q undervoltage coil 2YU loop, and the 1Q and the 2Q are interlocked.
After the 1Q switch-on supplies power to the ship main distribution board, if overcurrent and short circuit occur, the 1Q protection tripping device acts on 1Q tripping.
When detecting that the potential difference between the shore (PE) and the ship (E) is greater than a set value, the intermediate relay 1KA attracts and is self-maintained, and 3 pairs of the movable contact and the movable contact are respectively disconnected: cutting off a 2KA coil circuit to reset the circuit, cutting off a closing circuit of a shore power box circuit breaker, and cutting off an undervoltage circuit of the shore power box circuit breaker to open the shore power box circuit breaker; after the 2KA resets, its 3 to the contact that closes break off respectively: the method comprises the steps of firstly, cutting off a bypass of a 1KA self-protection contact in a 1KA coil loop, secondly, cutting off a closing loop of a shore power box circuit breaker, and thirdly, cutting off an undervoltage loop of the shore power box circuit breaker; 2KA dynamic break contact is connected to output alarm signals; after the shore power box breaker is opened to cut off shore power, the potential difference between the shore ground (PE) and the ship ground (E) is eliminated, 1KA automatic reset is carried out, and 3 pairs of the dynamic break contacts are reset and switched on: firstly, a 2KA coil loop is connected to enable the loop to be attracted, equipotential protection enters a monitoring state again, secondly, a bank power box circuit breaker closing loop is connected, thirdly, a bank power box circuit breaker under-voltage loop is connected, and the bank power box circuit breaker is allowed to be closed; if the potential difference between the shore power box circuit breaker and the ship ground (E) still exceeds a set value after the shore power box circuit breaker is opened, the shore power box circuit breaker cannot be closed; the self-locking button S is turned off, 2KA is reset, the 3 pairs of movable contacts are all turned off, the equipotential protection function is cancelled, and the shore power box circuit breaker is emergently cut off or can not be switched on.
The multifunctional monitoring relays 1MPS and 2MPS have the functions of automatically selecting positive phase sequence, phase failure, overvoltage, undervoltage and three-phase unbalance monitoring, and the threshold values of the overvoltage, the undervoltage and the phase unbalance can be adjusted according to protection requirements; if the three-phase voltage meets the requirement, the output relay acts, and a movable contact in a control loop is switched on; if the three-phase voltage is not in accordance with the requirement, for example, the negative phase sequence, the open phase, the overvoltage, the undervoltage and the phase imbalance are not in accordance with the requirement, the output relays of the 1MPS and the 2MPS are reset, and the 2 pairs of movable contacts are all disconnected: firstly, switching-on loops of the 1Q and the 2Q are cut off, secondly, undervoltage loops of the 1Q and the 2Q are cut off, the circuit breaker which is switched on is automatically switched off, and the circuit breaker which is not switched on cannot be switched on, so that phase sequence, phase loss, overvoltage, undervoltage and phase imbalance protection is realized.
Pressing an on-site cut-off button SO, and opening a switched-on shore power box breaker; if a remote control or interlocking function is needed, 1-2 of the secondary terminal block 2X can be connected with a remote control closing button, 5-6 can be connected with a remote control emergency stop button, and 3-4 and 7-8 can be respectively connected with circuits interlocked with 1Q and 2Q.
The functions of leakage protection, over-undervoltage, lightning protection and metering of the single-phase low-voltage shore power box are illustrated in fig. 10: the single-phase shipborne low-voltage shore power box comprises a circuit breaker Q, a standard shore power connector XP, a fuse wiring terminal row 1X, a wiring terminal row 2X, a protection release, an LED indicator lamp 1H, LED, an indicator lamp 2H, a marine button SC, a marine button S0, a single-phase voltage monitor ESS, an alternating-current intermediate relay 1KA, a direct-current intermediate relay 2KA, a marine self-locking button S, a marine fuse 1F, a marine fuse 2F, a marine fuse 3F, a marine fuse 4F, a Zener diode 1V, a Zener diode 2V, a Zener diode 3V and a Zener diode 4V; the incoming line termination of circuit breaker Q bank electricity power N line, L line, the PE line termination bank electricity power of the PE of on-board low-voltage bank electricity case, circuit breaker Q ' S the inlet wire termination protection release, the outlet terminal output bank electricity of protection release, the L line of bank electricity power, N line connect marine fuse 3F, marine fuse 4F ' S inlet wire end respectively, and the both ends of LED pilot lamp 2H connect marine fuse 3F, marine fuse 4F ' S outlet terminal respectively, and one end of marine button S0 ' S normally closed contact connects marine fuse 4F ' S outlet terminal, and another termination circuit breaker Q ' S the one end of undervoltage coil YU of marine button S0 ' S normally closed contact, direct current auxiliary relay 2KA ' S the other end series connection normally open contact, the normally closed contact of alternating current auxiliary relay KA 1KA, behind the normally open contact of single-phase voltage monitor ESS through binding post 2X ' S terminal number 4, The No. 3 end is connected with the outlet end of a marine fuse 3F, the No. 1 end of a connecting terminal row 2X is connected with the outlet end of the marine fuse 4F, the No.2 end of the connecting terminal row 2X is connected between a marine button SC and a closing coil YC of a breaker Q, one end of a normally open contact of the marine button SC is connected with the outlet end of the marine fuse 4F, the other end of the normally open contact of the marine button SC is connected with one end of the closing coil YC of the breaker Q, the other end of the closing coil YC of the breaker Q is connected with one end of a normally closed auxiliary contact of the breaker Q, the other end of the normally closed auxiliary contact of the breaker Q is connected between an undervoltage coil YU and a normally open contact of a direct current intermediate relay 2KA, the L end and the N end of the marine fuse 3F and the outlet end of the marine fuse 4F are respectively connected with the L end and the, the cathode of a Zener diode 3V is connected with the cathode of a Zener diode 4V, the anode of a Zener diode 2V is connected with the anode of the Zener diode 4V, the cathode of the Zener diode 2V is connected with the cathode of a Zener diode 1V, the anode of the Zener diode 1V is connected with a hull ground E, a normally open contact of an alternating current intermediate relay 1KA and a normally open contact of a direct current intermediate relay 2KA are connected in parallel, one end of a parallel circuit is connected with an N line of a shore power supply, the other end of the parallel circuit is connected with one end of a coil of the alternating current intermediate relay 1KA, the other end of the coil of the alternating current intermediate relay 1KA is connected between the Zener diode 2V and the Zener diode 4V, the coil of the direct current intermediate relay 2KA and an LED indicator lamp 1H are connected in parallel, one end of the parallel circuit is connected with the output, The normally closed contact of the marine self-locking button S is connected with the output negative end of a single-phase voltage monitor ESS, the output positive end and the output negative end of the single-phase voltage monitor ESS are connected with a marine power supply DC24V through a marine fuse 1F and a marine fuse 2F, and the outputs of the two ends of the normally closed contact of the direct current intermediate relay 2KA are connected with an alarm circuit.
The shipborne low-voltage shore power box further comprises a surge protector SPD, a multifunctional meter P and a current transformer 1T, wherein the N end of the surge protector SPD is connected with an N wire of a shore power supply through a fuse, the L end of the surge protector SPD is connected with an L wire of the shore power supply through the fuse, and the PE end of the surge protector SPD is grounded. The current transformer 1T is arranged at a wire outlet end of the protection release and used for detecting the current of the wire outlet end of the protection release, one end of the secondary side of the current transformer 1T is connected with the I end of the multifunctional meter P, and the other end of the secondary side of the current transformer 1T is connected with the I end of the multifunctional meter P0And the N end and the L end of the multifunctional meter P are respectively connected with the N line and the L line of the wire outlet end of the protection release after passing through the fuse.
The accessory of the shore power box circuit breaker Q in the figure 10 is provided with a residual current protector which accords with IEC 61000 and IEC60947-2 annex B standards, a tripping coil matched with a residual current release (the accessory is arranged on the circuit breaker) is adopted, no additional auxiliary power supply is needed, and when the leakage current exceeds a set threshold value (30mA-5A is adjustable, and the action time is instantly adjustable to 5S), the Q automatic opening is directly operated.
After the working voltage DC24 of the single-phase voltage monitor BSS in the figure 10 is switched on, the over-voltage and under-voltage are monitored and protected, when the voltage is normal, the output relay of the BSS acts, the opening and closing contact of the BSS is switched on a control loop of a shore power box circuit breaker Q, when the over-voltage and the under-voltage exceed the set threshold value, the output relay resets, the opening and closing contact of the output relay cuts off the control loop of the Q, and the Q automatically opens or cannot close.
In order to protect direct lightning, induction lightning and operation overvoltage, a Surge Protector (SPD) meeting IEC61643-1 standard is adopted to discharge sudden huge surge energy, the SPD is connected in parallel to the wire inlet side of a power supply through a fuse F1, and a neutral wire N and a ground wire PE are respectively and directly connected; the SPD is small in size, but the through-current capacity is large, so that when lightning or operation overvoltage occurs, transient overvoltage can be discharged to the ground in a very short time to protect connected equipment from being damaged; when the SPD is in protection action, 1 pair of dynamic break contacts can be output to open the circuit breaker; the built-in failure separation device of the SPD can automatically separate the SPD from a circuit and send an indication signal when the SPD fails due to overheating and breakdown.
If electricity metering is needed, 1 digital multifunctional electricity meter P with metering precision meeting the DL/T5202 standard can be configured, a voltage signal of the P is accessed through the fuses 5F and 6F, a current signal is accessed through the secondary side of the current transformer 1T, active electric quantity and reactive electric quantity can be measured, displayed and data stored, meanwhile, voltage, frequency, current, active power, reactive power, power factor and the like can be measured in real time, and LED field display and remote RS-485 digital interface communication can be realized.
The leakage protection, over-under voltage and lightning protection and metering functions in fig. 10 and 11 can be selected according to the needs in fig. 1 to 9.
4. The low-voltage shore power box has the structural characteristics that:
4.1 the basic structure is specified according to IEC publication IEC 60092-.
4.2 the type of protection of the housing is determined according to IEC 60529 publication "grading of type of protection of housing" and GB4208-2008 "rating of protection of housing (IP code)".
4.3 conductor materials of the bus bar and the insulated wire are determined according to IEC publication 60228 standard, the size of the bus bar is determined according to IEC publication 60092-32, and the arrangement of the bus bar and the conductor cross-sectional area and color mark of the insulated wire are determined according to the ship building specification.
4.4 the bare conductor takes measures against electrochemical corrosion, and the rated withstand voltage of the input and output circuits of the shore power supply to the ground is regulated according to IEC60071, IEC60439 and GB 311.1-2012, GB7251-2012 standards and ship building specifications.
4.5 the molded case circuit breaker can be horizontally or vertically installed, and is fixed on a bottom plate or installed by a guide rail according to different current grades, other electric appliances such as a surge protector, a relay, a wiring bar and the like can be installed on the bottom plate or the guide rail, the bottom plate is made of a carbon steel plate with the thickness of more than or equal to 1.5mm, the guide rail is a standard type electric guide rail, and the guide rail and the bottom plate are required to be reliably and electrically connected with a box body; the electric clearance and the creepage distance meet the requirement of GB 4793.1.
4.6 stuffing boxes of incoming and outgoing cables of the closed box body are arranged at the bottom of the box body, the specification and the number are determined according to the outer diameters of the incoming and outgoing cables, 3 stuffing boxes of cables for control, communication and the like are reserved at the bottom of the box body, and the aperture is more than or equal to 12 mm; the cable holes of the incoming and outgoing lines of the drip-proof box body are provided with cable supporting pieces which are convenient for fixing cables; and a space for facilitating the bending and wiring of the cable is reserved on the wire inlet and outlet side of the circuit breaker.
4.7 the outer bottom of the box body is easy to weld 1 safety grounding stud at the connection position, the diameter of the grounding stud of the single-phase shore power box is more than or equal to M6, and the diameter of the grounding stud of the three-phase shore power box is more than or equal to M10.
4.8 the position of the box leg is determined according to the requirement of an on-demand party, the surfaces of the upper left box leg and the lower right box leg are smooth and clean, and a copper plating layer or a tin plating layer is arranged for grounding the box leg.
4.9 the surface of the box body is smooth and clean, and the color inside the box body is generally white after spraying treatment, and the color outside the box body is determined according to the requirement of the required party.
4.10 all metal parts (fasteners) are electroplated to prevent corrosion; all fasteners are provided with anti-loosening devices.
4.11 the main parameters on the name plate of the shore power box are marked according to the requirements of ship building specifications.
5. Test standards
The acceptance test and the type test of the low-voltage shore power box products are specified in IEC60439 plus 2011, GB725 plus 20131 and ship construction specifications.
In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (4)
1. A ship-borne low-voltage shore power box is characterized by comprising a circuit breaker Q, a standard shore power connector XP, a fuse wiring terminal row 1X, a wiring terminal row 2X, a protection release, an LED indicator lamp 1H, LED indicator lamp 2H, a ship button SC, a ship button S0, a single-phase voltage monitor ESS, an alternating current intermediate relay 1KA, a direct current intermediate relay 2KA, a ship self-locking button S, a ship fuse 1F, a ship fuse 2F, a ship fuse 3F, a ship fuse 4F, a Zener diode 1V, a Zener diode 2V, a Zener diode 3V and a Zener diode 4V; the incoming line termination of circuit breaker Q bank electricity power N line, L line, the PE line termination bank electricity power of the PE of on-board low-voltage bank electricity case, circuit breaker Q ' S the inlet wire termination protection release, the outlet terminal output bank electricity of protection release, the L line of bank electricity power, N line connect marine fuse 3F, marine fuse 4F ' S inlet wire end respectively, and the both ends of LED pilot lamp 2H connect marine fuse 3F, marine fuse 4F ' S outlet terminal respectively, and one end of marine button S0 ' S normally closed contact connects marine fuse 4F ' S outlet terminal, and another termination circuit breaker Q ' S the one end of undervoltage coil YU of marine button S0 ' S normally closed contact, direct current auxiliary relay 2KA ' S the other end series connection normally open contact, the normally closed contact of alternating current auxiliary relay KA 1KA, behind the normally open contact of single-phase voltage monitor ESS through binding post 2X ' S terminal number 4, The rear end of the No. 3 end is connected with an outlet end of a marine fuse 3F, the No. 1 end of a connecting terminal row 2X is connected with an outlet end of a marine fuse 4F, the No.2 end of the connecting terminal row 2X is connected between a marine button SC and a closing coil YC of a breaker Q, one end of a normally open contact of the marine button SC is connected with the outlet end of the marine fuse 4F, the other end of the normally open contact of the marine button SC is connected with one end of the closing coil YC of the breaker Q, the other end of the closing coil YC of the breaker Q is connected with one end of a normally closed auxiliary contact of the breaker Q, the other end of the normally closed auxiliary contact of the breaker Q is connected between an undervoltage coil YU and a normally open contact of a direct current intermediate relay 2KA, the L end and the N end of the marine fuse 3F and the outlet end of the marine fuse 4F are respectively connected with the L end and the N end of a single-phase voltage monitor ESS, the anode of a Zener diode 2V is connected with the anode of a Zener diode 4V, the cathode of the Zener diode 2V is connected with the cathode of a Zener diode 1V, the anode of the Zener diode 1V is connected with the hull ground E, a normally open contact of an alternating current intermediate relay 1KA and a normally open contact of a direct current intermediate relay 2KA are connected in parallel, one end of a parallel circuit is connected with an N line of a shore power supply, the other end of the parallel circuit is connected with one end of a coil of the alternating current intermediate relay 1KA, the other end of the coil of the alternating current intermediate relay 1KA is connected between the Zener diode 2V and the Zener diode 4V, the coil of the direct current intermediate relay 2KA is connected with an LED indicator lamp 1H in parallel, one end of the parallel circuit is connected with the positive output end of a single-phase voltage monitor ESS, the other end of the parallel circuit is connected with the negative output end of the single, the positive end and the negative end of the output of the single-phase voltage monitor ESS are connected with a marine power supply DC24V through a marine fuse 1F and a marine fuse 2F, and the outputs of the two ends of a normally closed contact of the direct-current intermediate relay 2KA are connected with an alarm circuit.
2. The shipborne low-voltage shore power box according to claim 1, further comprising a Surge Protector (SPD), wherein an N end of the SPD is connected with an N wire of a shore power supply through a fuse, an L end of the SPD is connected with an L wire of the shore power supply through the fuse, and a PE end of the SPD is grounded.
3. The shipborne low-voltage shore power box according to claim 1, further comprising a multifunctional meter P and a current transformer 1T, wherein the current transformer 1T is installed at a wire outlet end of a protection release and detects a wire outlet end current of the protection release, one end of a secondary side of the current transformer 1T is connected with an I end of the multifunctional meter P, and the other end of the secondary side of the current transformer 1T is connected with the I end of the multifunctional meter P0And the N end and the L end of the multifunctional meter P are respectively connected with the N line and the L line of the wire outlet end of the protection release after passing through the fuse.
4. The shipborne low voltage shore power box according to claim 1, characterized in that said accessory of the circuit breaker Q is equipped with a residual current protector.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111342468A (en) * | 2020-04-07 | 2020-06-26 | 江苏中智海洋工程装备有限公司 | Multi-loop feeder safety loop of ship shore power system |
| CN111342467A (en) * | 2020-04-07 | 2020-06-26 | 江苏中智海洋工程装备有限公司 | Shipborne low-voltage single-loop shore power box |
| CN111355242A (en) * | 2020-04-07 | 2020-06-30 | 江苏中智海洋工程装备有限公司 | Shipborne low-voltage multi-loop shore power box |
| CN112332402A (en) * | 2020-09-18 | 2021-02-05 | 北京潞电电气设备有限公司 | Dual-power measurement and control device |
| CN112701792A (en) * | 2020-12-30 | 2021-04-23 | 江苏中智海洋工程装备有限公司 | Multifunctional low-voltage large-capacity shore power connection box circuit for port |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111342468A (en) * | 2020-04-07 | 2020-06-26 | 江苏中智海洋工程装备有限公司 | Multi-loop feeder safety loop of ship shore power system |
| CN111342467A (en) * | 2020-04-07 | 2020-06-26 | 江苏中智海洋工程装备有限公司 | Shipborne low-voltage single-loop shore power box |
| CN111355242A (en) * | 2020-04-07 | 2020-06-30 | 江苏中智海洋工程装备有限公司 | Shipborne low-voltage multi-loop shore power box |
| CN111342467B (en) * | 2020-04-07 | 2024-05-31 | 江苏玺骅电器有限公司 | Shipborne low-voltage single-loop shore power box |
| CN111355242B (en) * | 2020-04-07 | 2024-05-31 | 江苏玺骅电器有限公司 | Shipborne low-voltage multi-loop shore power box |
| CN111342468B (en) * | 2020-04-07 | 2024-06-04 | 江苏玺骅电器有限公司 | Multi-feedback line safety loop of ship shore power system |
| CN112332402A (en) * | 2020-09-18 | 2021-02-05 | 北京潞电电气设备有限公司 | Dual-power measurement and control device |
| CN112701792A (en) * | 2020-12-30 | 2021-04-23 | 江苏中智海洋工程装备有限公司 | Multifunctional low-voltage large-capacity shore power connection box circuit for port |
| CN112701792B (en) * | 2020-12-30 | 2024-06-11 | 江苏玺骅电器有限公司 | Multifunctional low-voltage high-capacity shore power connection box circuit for port |
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