CN205882845U - Boats and ships looped netowrk distribution system locking protection circuit - Google Patents

Boats and ships looped netowrk distribution system locking protection circuit Download PDF

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Publication number
CN205882845U
CN205882845U CN201620402611.3U CN201620402611U CN205882845U CN 205882845 U CN205882845 U CN 205882845U CN 201620402611 U CN201620402611 U CN 201620402611U CN 205882845 U CN205882845 U CN 205882845U
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China
Prior art keywords
circuit breaker
switch
distribution
circuit
voltage
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CN201620402611.3U
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Chinese (zh)
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帅网兰
温莉
夏进
周洋
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JIANGSU ZHENJIANG SHIPYARD (GROUP) CO Ltd
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JIANGSU ZHENJIANG SHIPYARD (GROUP) CO Ltd
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Abstract

The utility model discloses a boats and ships looped netowrk distribution system locking protection circuit, boats and ships looped netowrk distribution system high -tension distributing line and low pressure distribution lines are the looped netowrk circuit, the looped netowrk circuit is formed by connecting with the ring type wiring busbar interconnection switch, network switch, and busbar interconnection switch and network switch's sum be N, does the principle of carrying out lock -up control to the busbar interconnection switch and the network switch of looped netowrk circuit have N for in a N switch permission 1 individual switch closes a floodgate, must have 1 switch to be in the separating brake state, busbar interconnection switch and network switch are the circuit breaker, and an arbitrary circuit breaker Q's in the N circuit breaker locking protection circuit includes circuit breaker Q closing coils QC, circuit breaker Q separating brake coil QT, circuit breaker Q switching knob 1S, circuit breaker Q opening pushbutton 2S, miniature circuit breaker QF. The utility model discloses prevent effectively that the incident that high pressure and low pressure segmentation were run jointly the pass by looped netowrk bypass or mistake from taking place to reliability of power supply has been improved from this.

Description

Boats and ships looped network distribution system latch-up protection circuit
Technical field
This utility model relates to boats and ships main electrical power plant two-stage distribution dual-ring network system, particularly relates to boats and ships looped network distribution system and closes Lock protection circuit, belongs to ship power supply device technique field.
Background technology
Boats and ships main electrical power plant is the visual plant producing and distributing electric energy in Ship Electrical Power System, and it is by electromotor and former dynamic Machine, panel, transformator and auxiliary device are formed.
SOLAS (SOLAS) and various countries' maritime sector that International Maritime Organization (IMO) issues are sent out The ship construction rules of cloth, for ensureing boats and ships maritime safety, has a series of regulation and requirement to Ship Electrical Power System.Specification specifies Each ship must be equipped with a main power source, and this main power source should be at least made up of two separate generating sets, above-mentioned When the capacity of group of motors must make arbitrary generating set break down or be out of service, the capacity of remaining generating set still be enough to supply Supply electricity to all devices required when riding the sea.
The extensive application of electric propulsion technology, improving constantly and some specific defense preparations of ocean engineering ship comprehensive function Electricity needs, all make naval vessel main electrical power plant power increasing.For current, the electric pressure of most boats and ships main electrical power plants For three-phase alternating current 400V, 440V and 690V.The ship electric network day by day increased in the face of power, if main electrical power plant maintains conventional low-voltage Level, it is difficult to meet the power demand of power system.Most of electrical equipments are when Same Efficieney, and the volume of low-voltage electrical apparatus is with heavy Amount is more much bigger than High-Voltage Electrical Appliances, the cross-section of cable that transmits electric power required, more much bigger times of short circuit current so that low tension Device bears the ability of short circuit current to be difficult to meet requirement, and the cable laying to heavy in section and quantity are a lot of is also had any problem, low pressure confession, The negative effect of distribution is more.Although ship electricity system uses high pressure supply and distribution to overcome, low-voltage and high-current exists many asks Topic, but the electrical equipment of most of marine vessel power Demand-side is all low-voltage electrical apparatus, will all use high pressure to be not for distribution at full ship Actual.Due to many factors, high tension unit application in Ship Electrical Power System is also in the starting stage, but generates electricity separate unit Acc power, at the boats and ships main electrical power plant of more than 3MW, uses high pressure supply and distribution, has been the objective requirement of Technological Economy.
IEC is phase voltage at the high pressure that is set to of more than 1kV, and the ship construction rules of Ge great classification society is to boats and ships high tension unit Content few, statement is also slightly different, wherein rated voltage, rated frequency and the switch to three-phase alternating current high-voltage electric power system The pertinent regulations of device minimum clearance, the data being summed up are shown in Table 1.
The minimum clearance of rated voltage, rated frequency and the switching device of table 1 Marine high voltage electric system
Rated voltage 3.0/3.3kV 6.0/6.6kV 10/11kV 15/16.5kV
Highest voltage for equipment 3.6kV 7.2kV 12kV 17.5kV
Rated frequency 50/60Hz 50/60Hz 50/60Hz 50/60Hz
Minimum clearance 55mm 90mm 120mm 160mm
Ship specification allows high tension unit to use three lines and hull insulation system or three line earth neutral systems;Require height It is press-fitted electroplax and should have metallic cover shell that is completely separated and that all close on four sides;High voltage power distribution arrange should be able to by drawer type, Drawing and pulling type chopper or switch or the bus-bar of main distribution board is at least divided into independent two parts by disconnecting switch, each Part is at least powered by an alternating current generator;Specification proposes can be by low-pressure system neutral earthing or use suitable midpoint Pressure limiting device, prevent by high-pressure system between the low-pressure system of transformer-supplied is because of primary and secondary winding contingent insulation therefore The overvoltage hindered and produce;Specification simultaneously to the ground connection of high tension unit, protect, the item such as test has relevant regulations.
For preventing boats and ships sea pollution, " the oil pollution from vessels world public affairs that International Maritime Organization (IMO) passed through in 1997 About " (MARPOL), came into force in 2005.According to statistics, it is total that the DS NOx Est amount of global marine vessel discharge in 2008 accounts for discharge 18-the 30% of amount, SOX discharge capacity accounts for the 9% of total emission volumn, and then in October, 2008, the maritime environment being under the jurisdiction of IMO is protected Protect the 58th meeting of committee (MEPC), passed strict a control through discussion and reduced from boats and ships air pollutants noxious emission International laws and regulations " marine antifouling pact supplemental provisions VI-revised edition ", reduce or limit from boats and ships greenhouse gases Technology development and approach to cooperation on achieve major progress;MEPC the 64th session was held in October, 2012, can go up establishment Air pollution and efficiency working group, also set up antifouling mandatory provisions amendment and draft group;MEPC the 66th session in In March, 2014 holds, and has considerateed and adopted air pollution and the mandatory file such as efficiency, shipping industry greenhouse gases (GHG) reduction of discharging. China and American and Britain, method, moral, day etc. are many national, pay much attention to the work of honouring an agreement of MARPOL, in fulfilment of duty of treaty power, protection Marine environment and resource, preventing and treating Pollution From Ships infringement, promote that the sustainable development of shipping, some countries use certain of IMO comprehensively A little pacts and proposal, some countries then work out corresponding domestic law according to these pacts and proposal, strengthen preventing boats and ships Dirty management, has issued the national regulation of a series of restriction marine exhaust discharge in succession, boats and ships polluting super row or not Standard approaches, or carries out severe sanction measure.Therefore, boats and ships grow with each passing day with the urgency improving efficiency to reducing discharge, Plus World Economics, low and energy scarcity, causes sea-freight cost increase, promotes shipping business must focus on energy-saving and emission-reduction and drop this Potentiation.
Under the combined influence of above-mentioned background, boats and ships main electrical power plant design innovation premised on safe and reliable and energy-saving and emission-reduction It is imperative.For capital ship and huge ship ship, more it is necessary to improve the motility for distribution, it is ensured that ship electricity system is going out When existing fault or special event, the safe and reliable power supply of energy, meet all devices required during sail demand to electric power.As What accomplishes the relevant requirement making boats and ships main electrical power plant both comply fully with SOLAS and ship specification, can meet again MARPOL and antifouling subtract Arrange the regulation of international laws and regulations, ensure power supply reliability simultaneously, it has also become an important topic.
Above-mentioned technical problem can use boats and ships main electrical power plant two-stage distribution dual-ring network system to solve, described two-stage distribution dicyclo Net system, is divided into one-level distribution, graduation two electricity, and one-level distribution is high voltage power distribution, and graduation two electricity is low-voltage distribution, high voltage power distribution Circuit and low-voltage distributing line are loop grid.The superiority of two-stage distribution dual-ring network is it is clear that low delay unloading a ship with traditional Oceangoing ship supply line compares, and two-stage distribution dual-ring network has a motility of distribution, and which thereby enhances the reliability of power supply, enhances The main electrical power plant power supply capacity when accident, and beneficially energy-saving and emission-reduction, raising quality of voltage, the short-circuit danger caused of reduction Do harm to, be easy to cable laying.
Guarantee that looped network circuit safety runs it is crucial that high pressure to be prevented or low pressure segmentation are bypassed by loop grid and cause Protection device lost efficacy, or combination switch generation contingency by mistake.In recent years, some cities are also adopted by high pressure ring in electric network reconstruction Circuit, but the distribution looped network in city and ship electricity looped network have fundamental difference, and the two-way power supply of city looped network mesohigh mains side can Can be from Liang Ge electric substation, it is also possible to from two sections of bus-bars of same electric substation, two-way power supply once lost efficacy, each in looped network Station power distribution transformator also whole dead electricity.Being mainly characterized by of ship electricity system does not allows full ship dead electricity, at one-level distribution mesohigh electricity After two sections of bus-bars of source all lost efficacy, the power-supply device in graduation two electricity still can provide standby high pressure to high-tension busbar Standby main power source, it is ensured that each station power distribution transformator in looped network can continue to run with maintenance and power, among these to full ship visual plant Electromotor start with switch deciliter, the most unartificial operation can complete at the appointed time, but by with full ship computer Ship Power Station intelligent management device (PMS) of comprehensive monitoring system networking is automatically performed.City net in because of loop networks switch between Distance longer, again without graduation two electricity to one-level distribution provide power supply function, so preventing high-pressure subsection by by loop grid Road or the by mistake method of combination switch are dependent on operational management system (order ticket, work ticket, operation order) and prevent maloperation, this side Formula does not meets and uses in ship electricity system.
Utility model content
The purpose of this utility model is to provide a kind of boats and ships looped network distribution system latch-up protection circuit, at high voltage power distributing cabinet On the basis of there is " five prevent " function with ring main unit itself, set up the interlock of necessity, to stop any type of maloperation, Effectively preventing high pressure and low pressure segmentation from being bypassed by looped network or the event of by mistake combination switch occurs, meet that PMS carries out automatically controlling wants Ask.
The purpose of this utility model is achieved by the following technical programs:
A kind of boats and ships looped network distribution system latch-up protection circuit, boats and ships looped network distribution system is divided into one-level distribution, graduation two Electricity, described one-level distribution is high voltage power distribution, and described graduation two electricity is that low-voltage distribution, high-tension distributing line and low-voltage distributing line are equal For loop grid, described loop grid is formed by connecting with ring type wiring by bus-bar interconnection switch, loop networks switch, and bus-bar is got in touch with Switch is N with the sum of loop networks switch, and with loop networks switch, the bus-bar interconnection switch of loop grid is carried out the former of lock-in control Then for N number of switch only having allowed N-1 switch close a floodgate, it is necessary to there is 1 switch to be in gate-dividing state;The contact of described bus-bar is opened Closing with loop networks switch is chopper, and the latch-up protection circuit of any one circuit breaker Q in N number of chopper includes that circuit breaker Q is closed Brake cable circle QC, circuit breaker Q switching winding QT, circuit breaker Q switch knob 1S, circuit breaker Q opening button 2S, miniature circuit breaker QF; One end of described circuit breaker Q closing coil QC connects power supply MC end, the other end of circuit breaker Q closing coil QC through miniature circuit breaker QF With circuit breaker Q normally closed auxiliary contact Q1One end connect, remaining chopper in N number of chopper, each chopper take a pair normal Close auxiliary contact and carry out parallel connection, parallel circuit one end and circuit breaker Q normally closed auxiliary contact Q1The other end connect, parallel circuit is another One end of one termination circuit breaker Q switch knob 1S, the other end of circuit breaker Q switch knob 1S meets power supply WC through miniature circuit breaker QF End, one end of described circuit breaker Q switching winding QT connects power supply MC end through miniature circuit breaker QF, and circuit breaker Q switching winding QT's is another One end and circuit breaker Q normally opened contact Q2One end connect, circuit breaker Q normally opened contact Q2The other end and circuit breaker Q opening button 2S One end connect, the other end of circuit breaker Q opening button 2S connects power supply WC end through miniature circuit breaker QF, in N number of chopper remaining The each chopper of chopper take a pair normally opened auxiliary contact and connect, the two ends of series circuit are connected in parallel in circuit breaker Q The two ends of opening button 2S.
Compared with prior art, the beneficial effects of the utility model are: this utility model boats and ships looped network distribution system locking Protection circuit effectively prevents high pressure and low pressure segmentation from being bypassed by looped network or the event of mistake combination switch occurs, and which thereby enhances confession The reliability of electricity, meets the requirement that PMS carries out automatically controlling.
Accompanying drawing explanation
Fig. 1 is boats and ships main electrical power plant two-stage distribution dual-ring network system diagram of the present utility model;
Fig. 2 is boats and ships looped network distribution latch-up protection circuit theory diagrams;
Fig. 3 is high-pressure vacuum breaker and high voltage load switch electric operating control principle drawing;
Fig. 4 is high pressure ring circuit breaker lock control circuit schematic diagram;
Fig. 5 is defeated ash shipowner power station two-stage distribution dual-ring network system diagram;
Fig. 6 is defeated ash ship high pressure ring circuit breaker lock control circuit figure;
Fig. 7 is low-voltage circuit breaker electric operating control principle drawing;
Fig. 8 is defeated ash ship low pressure looped network circuit breaker lock control circuit figure.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Boats and ships main electrical power plant two-stage distribution dual-ring network system is the innovative design to ship ship electrical network supply side electrical main connecting wire, two Level distribution refers respectively to high voltage power distribution and low-voltage distribution, and dual-ring network refers respectively to high-tension line looped network and low-voltage circuit looped network.
As it is shown in figure 1, it is completely separated power distribution cabinet that the dotted line between each cabinet of high-voltage board represents, each cabinet draw out switchgear fills Put equipped with being effective mechanical interlocking device in operating position and open position that (" five prevent " function: a. prevents on-load from drawing by mistake Close insulating contact by mistake;B. chopper (or high voltage load switch) is closed before preventing charged conjunction earthed switch and the non-separating brake of earthed switch; C. mistakenly entering charged chamber is prevented;D. prevent handcart from pulling out secondary plug when operating position;E. prevented from opening during electricity cabinet door and Open cabinet to operate behind the door), to stop any type of maloperation, the earthed switch of each high-voltage board is respectively provided with making capacity, Distribution transformer is dry-type transformer, is entirely capable of meeting in ship construction rules and wants main power source and the relevant of high tension unit Ask.When all kinds of naval vessels are applied this system, it is only necessary to selecting electric pressure, the size of generator capacity and number of units, high/low These aspects of number of units of the pressure hop count of bus-bar, the quantity of high low pressure side feeding switch, ring main unit and distribution transformer are because of ship And different, its electrical main connecting wire can be carried out by this pattern reducing or extending according to the actual requirements.Creep age distance, protection to switch cubicle Grade, safeguard procedures, equipotential link, protection equipment, the structure of switching device, check, test and the selection etc. of cable is concrete Item, is still performed by the regulation of ship specification.
As a example by Fig. 1, one-level distribution includes with high pressure ring:
(1) 2 high-voltage generator 1G and 2G determined according to carry calculation result, respectively by high pressure main distribution cashier's office in a shop Switch 5Q Yu 10Q provide high pressure main power source to high pressure I section with II section of bus-bar;
(2) high pressure main distribution high-voltage switch gear 2Q cashier's office in a shop is used for accessing high voltage shore power power supply;
(3) by high pressure main distribution switch 6Q with 9Q cashier's office in a shop respectively to be installed in main electrical power plant (generally in cabin or near Place) main distribution transformator 1T, 2T high-pressure side distribution;
(4) high voltage power supply by high pressure main distribution switch 1Q Yu 13Q cashier's office in a shop respectively to being installed in the A district that load is concentrated at a distance With the distribution transformer high-pressure side distribution in N district, B district that horizontal high voltage looped network of going forward side by side is concentrated to load, the distribution transformer high pressure in C district Side distribution, such as the high-voltage generator 1G high-voltage switch gear 5Q--high-voltage switch gear 1Q-high-voltage switch gear 22Q-high-voltage switch gear in Fig. 1 Ring between 23Q-high-voltage switch gear 25Q-high-voltage switch gear 27Q-high-voltage switch gear 13Q-high-voltage switch gear 10Q-high-voltage generator 2G Net, high-voltage generator 1G Yu 2G can be carried out paired running by ship power station power management device (PMS) automatic synchronization;
(5) by high pressure main distribution high-voltage switch gear 3Q, 4Q, 11Q, 12Q (quantity can on-demand increase and decrease) cashier's office in a shop to high voltage electric Load (the such as equipment such as high-tension motor, dedicated transformer) directly distribution.
Graduation two electricity includes with low pressure looped network:
(1) low-pressure side (usually 400V or 440V or 690V) of main distribution transformator 1T with 2T is joined by low pressure master respectively Switch 4LQ Yu 8LQ of electroplax provides low pressure main power source to I section, II section bus-bar of low pressure;
(2) two low pressure main generator groups 1DG of configuration and 2DG, respectively by switch 3LQ and 7LQ of low pressure main distribution board Standby low pressure main power source is provided respectively to I section, II section bus-bar of low pressure;
(3) the switch 1LQ on low pressure main distribution board is used for accessing low pressure shore electric power;
(4) by switch 2LQ Yu 9LQ of low pressure main distribution board respectively to the primary side distribution of key lighting transformator 3T Yu 4T, The primary side (usually 220V) of 3T Yu 4T provides illumination and day electricity consumption to III section of bus-bar of low pressure of low pressure main distribution board respectively The power supply of device;
(5) by the switch of setting on-demand on low pressure main distribution board to low pressure electric loading distribution nearby;
(6) disconnecting switch 1EQ of emergency switchboard is passed through to emergency switchboard I by the switch 10LQ on low pressure main distribution board Section bus-bar is powered, and the switch 3EQ of emergency switchboard is to dry type emergency lighting transformator ET primary side distribution, the primary side of ET (usually 220V) provides the power supply of emergency lighting and daily electrical equipment to II section of bus-bar of emergency switchboard;Emergency switchboard The switch of upper on-demand setting is to full ship emergency load distribution;
(7) lateral its of the dry-type distribution transformer low pressure in each electricity consumption load centralization district (A district, B district, C district, N district) low presses off The bus-bar closing plate provides power supply, by the feeding switch of each district low tension switchboard to local area low pressure electric loading distribution;
(8) low pressure main generator group can pass through main distribution transformer boost if desired, provides power supply also to high-tension busbar The low voltage generator 1DG switch 3LQ carried out in looped network, such as Fig. 1 switchs 4LQ-main distribution transformator 1T-high-voltage switch gear 6Q-high-voltage switch gear 1Q-high-voltage switch gear 22Q-high-voltage switch gear 23Q-high-voltage switch gear 25Q-high-voltage switch gear 27Q--high-voltage switch gear Looped network between 13Q--high-voltage switch gear 9Q main distribution transformator 2T switch 8LQ switch 7LQ low voltage generator 2DG is low Hair Fixer motor 1DG Yu 2DG can be carried out paired running by PMS automatic synchronization.
Boats and ships main electrical power plant two-stage distribution dual-ring network system has the motility of distribution, and which thereby enhances the reliable of power supply Property, enhance the main electrical power plant power supply capacity when accident.In graduation two electricity, low voltage generator group is used to provide standby Main power source, when any reason causes one-level distribution to lose efficacy, graduation two electric energy meets need for electricity during ship's navigation, it is ensured that boat Row safety.When the high-voltage generator in one-level distribution all lost efficacy, the low pressure main generator in graduation two electricity can be joined by main Piezoelectric transformer liter presses to high voltage power distributing cabinet and provides standby high pressure main power source, to each loading zone distribution, maintains the normal work of visual plant Make.Compared with traditional low pressure ship power supply circuit, this utility model be conducive to energy-saving and emission-reduction, improve quality of voltage, reduce short Harm that road is caused, it is easy to cable laying.Main electrical power plant uses high voltage power supply, is conducive to selecting large power, electrically source device, improves warp Ji property.In one-level and graduation two electricity, it is provided with the switch connecing high voltage shore power with low pressure bank electricity, connects for harbour service or when berthing With bank electricity, the pollution caused because of discharge when being effectively reduced boats and ships self power generation.
On the basis of high voltage power distributing cabinet and ring main unit itself have " five prevent " function, boats and ships main electrical power plant two-stage distribution dicyclo Net system also should arrange the interlocking of necessity, to stop any type of maloperation.A following switch interlock is had as a example by Fig. 1:
(1) high voltage shore power switch interlocks with each on and off switch.As it is shown in figure 1, wherein 2Q Yu 5Q, 10Q, 1LQ, 3LQ, 7LQ, In 2EQ, any one switch all must interlock;
(2) low pressure bank electric switch interlocks with each on and off switch.As it is shown in figure 1, wherein 1LQ Yu 2Q, 5Q, 10Q, 3LQ, 7LQ, In 2EQ, any one switch all must interlock;
The superiority of two-stage distribution dual-ring network is apparent, it is ensured that looped network circuit safety run it is crucial that high pressure to be prevented Or low pressure segmentation is bypassed by loop grid and causes protection device to lose efficacy, or combination switch generation contingency by mistake.
In recent years, some cities are also adopted by high pressure ring circuit in electric network reconstruction, but the distribution looped network in city and ship Electricity looped network has fundamental difference, the two-way power supply of city looped network mesohigh mains side to may be from Liang Ge electric substation, it is also possible to from Two sections of bus-bars of same electric substation, two-way power supply once lost efficacy, the also whole dead electricity of each station power distribution transformator in looped network.Ship electricity Being mainly characterized by of system does not allows full ship dead electricity, after two sections of bus-bars of one-level distribution mesohigh mains side all lost efficacy, Power-supply device in graduation two electricity still can provide standby high voltage standby main power source to high-tension busbar, it is ensured that each in looped network Distribution transformer can continue to run with maintenance and power to full ship visual plant, electromotor among these start with switch deciliter, all Unartificial operation can complete at the appointed time, but by the Ship Power Station intelligence networked with full ship computer generalization monitoring system Managing device (PMS) can be changed be automatically performed.In the net of city longer because of the distance between loop networks switch, electric to one-level without graduation two again Distribution provides the function of power supply, so preventing high-pressure subsection from being bypassed by loop grid or by mistake the method for combination switch is dependent on running pipe Reason system (order ticket, work ticket, operation order) prevents maloperation, this mode from not meeting use in ship electricity system.
In order to solve described technical problem, the technical scheme that this utility model is taked is either high pressure ring or low pressure Looped network, the bus-bar interconnection switch of its loop grid and the total quantity of loop networks switch are N, and the principle carrying out lock-in control is can only N-1 switch is had to close a floodgate.The ultimate principle figure of looped network distribution latch-up protection circuit is as in figure 2 it is shown, bus-bar interconnection switch and ring Net switch is chopper, and the latch-up protection circuit of any one circuit breaker Q in N number of chopper includes circuit breaker Q closing coil QC, circuit breaker Q switching winding QT, circuit breaker Q switch knob 1S, circuit breaker Q opening button 2S, miniature circuit breaker QF;Described disconnected One end of road device Q closing coil QC connects power supply MC end, the other end of circuit breaker Q closing coil QC and open circuit through miniature circuit breaker QF Device Q normally closed auxiliary contact Q1One end connect, remaining chopper in N number of chopper, each chopper takes a pair normally closed auxiliary Contact carries out parallel connection, parallel circuit one end and circuit breaker Q normally closed auxiliary contact Q1The other end connect, parallel circuit another termination One end of circuit breaker Q switch knob 1S, the other end of circuit breaker Q switch knob 1S meets power supply WC end, institute through miniature circuit breaker QF State one end of circuit breaker Q switching winding QT and connect power supply MC end through miniature circuit breaker QF, the other end of circuit breaker Q switching winding QT with Circuit breaker Q normally opened contact Q2One end connect, circuit breaker Q normally opened contact Q2One end of the other end and circuit breaker Q opening button 2S Connecting, the other end of circuit breaker Q opening button 2S connects power supply WC end through miniature circuit breaker QF, remaining open circuit in N number of chopper The each chopper of device takes a pair normally opened auxiliary contact and connects, the two ends of series circuit be connected in parallel in circuit breaker Q separating brake by The two ends of button 2S." N opens N-1 " locking is ensured that in high pressure ring and low pressure looped network has a switch to be in gate-dividing state, keeps away Exempt to cause the interconnection switch of bus-bar segmentation to be bypassed by looped network.When high pressure or low-voltage bus-bar segmentation have increased and decreased with loop networks switch Time, still it is controlled by above-mentioned locking principle.
In the specific embodiment shown in Fig. 1, the bus-bar interconnection switch of high pressure main distribution cabinet is 7Q, 8Q, loop networks switch For 22Q, 23Q, 25Q, 27Q, therefore N=6, N-1=5, these 6 switches must be carried out " 6 open 5 ", i.e. 6 switches have only allowed 5 combined floodgates, one of them must be at open position.
Being high-pressure vacuum breaker and high voltage load switch electric operating control principle drawing as shown in Figure 3, Fig. 4 is Fig. 1 institute The specific embodiment mesohigh loop networks switch locking control circuit schematic diagram shown, the master switch needed because of exclusive circuit in the diagram Auxiliary contact is more, have employed auxiliary reclay and carries out contact extension, occurs for preventing auxiliary reclay cisco unity malfunction Maloperation, adds the protection that master switch cannot close a floodgate when this cabinet auxiliary reclay lost efficacy, and also add and ought wherein 1 master open Close after having closed a floodgate, if other 5 master switch operation power supplys are all turned on, this master switch separating brake immediately closed a floodgate Protection.Such as, in " N opens N-1 " (6 open 5) exclusive circuit of master switch 7Q, after 1QF combined floodgate making operation power supply, when 11S connects Time logical, if 1K is not operating, 7Q cannot close a floodgate;Closed a floodgate at 7Q, when control operation the miniature circuit breaker 2QF of power supply, 3QF, After 4QF, 5QF, 6QF all close a floodgate, the moving together contact of 2K, 3K, 4K, 5K, 6K is all turned on, 7Q just automatic brake separating;If it is middle Have 1 or many inefficacy in relay 2K, 3K, 4K, 5K, 6K, then corresponding master switch will be unable to close a floodgate, thus is effectively prevented Under any circumstance there is maloperation.
As it is shown in figure 5, as a example by a defeated ash ship of certain company, this ship has disintegrating machine 2, each motor to be Y5003- 8 types, rated voltage 0.38kV, delta connection, rated power 630kW, Y/ △ start;Defeated ash 102m3/ min screw air compressor 2 Platform, every motor rated voltage 0.38kV, rated power 600kW, frequency control;Other electricity consumptions such as cabin and deck machinery are born Carrying voltage and be three-phase alternating current 0.38kV, normal illumination is with the voltage of single-phase electric loading and exchanges 0.22kV, and this ship is at port By electric loading maximum during mouth operation, calculated load is 5280kW.Stop the said firm's dock operation time, have three-phase alternating current 50Hz, 10kV and 0.4kV shore electric power is available.
According to carry calculation result with by the situation of electric loading, the installation place of the most above-mentioned 4 powerful devices away from Disembark cabin farther out, radius of electricity supply is all at about 200m, through technical economic analysis, determines that this shipowner power station uses 10kV for distribution At aspects such as technology, economy, environmental protection advantageously.Promote mainly when harbour is with dock operation into not working, available 2 promote mainly into The high-voltage generator of diesel engine (separate unit power 6600HP) respectively 1 10.5kV, 50Hz, 3600kW/4500kVA of driving (send out by axle band Motor 1HG, 2HG) provide high pressure main power source to I section of high pressure main distribution cabinet with II section of bus-bar respectively;Arrange 2 10 ± 2 × 2.5%/0.4kV, dry type main step-down transformer 1T and 2T of 1250kVA, its high-pressure side is powered by high pressure main distribution cabinet, low-pressure side Low pressure main power source is provided with II section of bus-bar respectively to I section of low pressure main distribution board;Arrange 2 three-phase alternating current 50Hz, 0.4kV, 1000kW/1250kVA main diesel generating set (1DG, 2DG) respectively to I section of low pressure main distribution board with II section of bus-bar The standby main power source of low pressure is provided;Respectively install in the Y/ △ starting box front end of 2 disintegrating machines 1 dry type special step-down transformer 3T with 4T (1000kVA, 10/0.4kV), its high-pressure side is powered by high pressure main distribution cabinet;At 2 102m3The change of/min screw air compressor Frequently device front end respectively configure 1 blood pressure lowering hold concurrently suppression harmonic wave dry type dedicated transformer 5T Yu 6T (10/0.4kV, 50Hz, V/Y △, 800kVA), its high-pressure side through high pressure ring switch power supply and is carried out looped network by high pressure main distribution cabinet;Cabin and deck machinery etc. are low Pressure electric loading is powered by low pressure main distribution board, and the auxiliary device that disintegrating machine is worn with air compressor machine is low by corresponding dedicated transformer Pressure side powers.The program both can connect when the said firm's dock operation and use 10kV shore electric power, can connect use when berthing operating mode again 0.4kV shore electric power.
Owing to the withstanding voltage of insulation new material improves constantly with manufacturing process, make the compact conformation of High-Voltage Electrical Appliances, profile Small and exquisite, create condition for adapting to boats and ships about the situation that cabin spaces is limited.Such as rated operational voltage 7.2-17.5kV, volume Determining the metal armored movable high voltage power distributing cabinet of electric current 630A or 1250A, master switch uses vacuum or sulfur hexafluoride (SF6) open circuit Device, electric/manual operate, and overall dimensions can be within wide 600mm, high 2000mm, deep 1450mm, if by voltage transformer (PT) cabinet and incoming line cabinet unification, cabinet width is at about 900mm, and electrical appliance arrangement can meet the rule of table 1 breaker in middle device minimum clearance Fixed.If load is little, master switch can use sulfur hexafluoride (SF6) on-load switch, and high-voltage board size can reduce further, and cabinet width can Control at 375mm, high 1600mm, deep about 900mm.This shipowner's main electrical scheme of station and high-voltage board overall dimensions such as Fig. 4 institute Show.The master switch of Fig. 4 mesohigh main distribution cabinet all uses high-pressure vacuum breaker, rated voltage 12kV, rated current 630A, Rated short circuit drop-out current 20kA, rated short circuit making current 50kA, specified KA Rms 20kA (4S), it is possible to select six Sulfur fluoride (SF6) chopper, parameters all can meet the requirement of this ship power system;On two high-voltage generator switch boards respectively Install one group of Zinc-Oxide Arrester and carry out overvoltage protection, install two voltage transformers (10/0.1kV) and measurement and protection are provided Device power supply;Each high pressure line is each equipped with one group of grounding switch, to ensure the personal safety when overhaul of the equipments cashier's office in a shop; Each high-voltage switch gear is cashier's office in a shop respectively arranged with electrification display, locking high-voltage board cable chamber door when having electricity;1 is cashier's office in a shop installed at bus contact Main electrical power plant electricity consumption dry-type transformer (30kVA, 10/0.4kV, Dyn11) supply main electrical power plant working power;" three stations " is used (to divide Lock, combined floodgate, ground connection) 2 air compressor machine dedicated transformers are being controlled by type SF6 high voltage load switch+fuse combination on the spot And protection, high pressure ring switch is SF6 high voltage load switch.
Two-stage distribution high pressure ring has the motility of distribution, and which thereby enhances the reliability of power supply.At the main electricity of boats and ships Supply and distribution of standing power is identical, transmission line of electricity electric current density constant in the case of, result of calculation shows high voltage power distribution superiority relatively Many.
High pressure is the most particularly significant to the person and equipment safety for safety interlock or the blocking function of distribution, except " five prevent " function Outward, according to the regulation of aforementioned two-stage distribution with the switch interlock (or locking) in high pressure ring, as a example by Fig. 5, should arrange following Interlocking or locking:
(1) high and low pressure bank electricity interlocks with ship electricity.In 4Q with 5Q, 8Q, 4LQ, 5LQ, 8LQ, 2EQ, any one switch all enters Row interlocking;In 4LQ with 5LQ, 8LQ, 4Q, 5Q, 8Q, 2EQ, any one switch all interlocks;
(2) " N opens N-1 " locking of high pressure ring switch.The high pressure main distribution cabinet interconnection switch that confluxes is 6Q and 7Q, 6Q and 7Q For high-pressure vacuum breaker, loop networks switch is 21Q and 23Q, 21Q and 23Q are high voltage load switch, N=4, and these 4 switches are carried out No matter " N opens N-1 " locking (i.e. " 4 open 3 " locking), use any power supply plan, must have 1 disconnected in these 4 switches Open state.Defeated ash ship high pressure ring circuit breaker lock control circuit figure is as shown in Figure 6.High-pressure vacuum breaker and high voltage load switch Electric operating control principle is as shown in Figure 3.
(3) " N opens N-1 " locking of low pressure loop networks switch.The low pressure main distribution board interconnection switch that confluxes is 6LQ and 7LQ, looped network Switch is 21Q and 23Q, and wherein 6LQ Yu 7LQ is low-voltage circuit breaker, 21Q Yu 23Q is low voltage switch, N=4, these 4 switches Carry out " N opens N-1 " locking (i.e. " 4 open 3 " locking), no matter use any power supply plan, these 4 switches must have 1 In off-state.Defeated ash ship low pressure looped network circuit breaker lock control circuit figure is as shown in Figure 8.Low-voltage circuit breaker electric operating controls former Reason is as shown in Figure 7.Because this ship high pressure ring circuit needs the switch of locking to only have 4, thus high pressure ring circuit " N opens N- 1 " locking all uses the auxiliary contact of master switch, it is not necessary to use auxiliary reclay to carry out contact extension.This ship low pressure looped network electricity " N the opens N-1 " locking on road uses auxiliary reclay extension contact.
In addition to the implementation, this utility model can also have other embodiments, all employing equivalents or equivalence to become Change the technical scheme of formation, all fall within the protection domain of this utility model requirement.

Claims (1)

1. a boats and ships looped network distribution system latch-up protection circuit, it is characterised in that boats and ships looped network distribution system is divided into a grating Electricity, graduation two electricity, described one-level distribution is high voltage power distribution, and described graduation two electricity is low-voltage distribution, high-tension distributing line and low pressure Distribution line is loop grid, and described loop grid is formed by connecting with ring type wiring by bus-bar interconnection switch, loop networks switch, Bus-bar interconnection switch is N with the sum of loop networks switch, and described bus-bar interconnection switch and loop networks switch are chopper, N number of disconnected The latch-up protection circuit of any one circuit breaker Q in the device of road include circuit breaker Q closing coil QC, circuit breaker Q switching winding QT, Circuit breaker Q switch knob 1S, circuit breaker Q opening button 2S, miniature circuit breaker QF;One end of described circuit breaker Q closing coil QC Power supply MC end, the other end of circuit breaker Q closing coil QC and the one of circuit breaker Q normally closed auxiliary contact Q1 is met through miniature circuit breaker QF End connects, and remaining chopper in N number of chopper, each chopper takes a pair normally closed auxiliary contact and carries out parallel connection, parallel circuit One end is connected with the other end of circuit breaker Q normally closed auxiliary contact Q1, the one of parallel circuit another termination circuit breaker Q switch knob 1S End, the other end of circuit breaker Q switch knob 1S connects power supply WC end through miniature circuit breaker QF, described circuit breaker Q switching winding QT's One end meets power supply MC end, the other end of circuit breaker Q switching winding QT and the one of circuit breaker Q normally opened contact Q2 through miniature circuit breaker QF End connects, and the other end of circuit breaker Q normally opened contact Q2 is connected with one end of circuit breaker Q opening button 2S, circuit breaker Q opening button The other end of 2S connects power supply WC end through miniature circuit breaker QF, in N number of chopper each chopper of remaining chopper take a pair normal Driving auxiliary contact to connect, the two ends of series circuit are connected in parallel in the two ends of circuit breaker Q opening button 2S.
CN201620402611.3U 2016-05-05 2016-05-05 Boats and ships looped netowrk distribution system locking protection circuit Withdrawn - After Issue CN205882845U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105743215A (en) * 2016-05-05 2016-07-06 江苏省镇江船厂(集团)有限公司 Ship ring network power distribution system locking protection circuit
CN107918378A (en) * 2017-11-27 2018-04-17 中国船舶重工集团公司第七0四研究所 Marine electric power propulsion monitoring device and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105743215A (en) * 2016-05-05 2016-07-06 江苏省镇江船厂(集团)有限公司 Ship ring network power distribution system locking protection circuit
CN105743215B (en) * 2016-05-05 2018-04-03 江苏省镇江船厂(集团)有限公司 Ship looped network distribution system latch-up protection circuit
CN107918378A (en) * 2017-11-27 2018-04-17 中国船舶重工集团公司第七0四研究所 Marine electric power propulsion monitoring device and method
CN107918378B (en) * 2017-11-27 2020-04-14 中国船舶重工集团公司第七0四研究所 Ship electric propulsion monitoring device and method

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