CN102074902A - Visual alternating current distribution board with interlock protection function - Google Patents
Visual alternating current distribution board with interlock protection function Download PDFInfo
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- CN102074902A CN102074902A CN 201010582360 CN201010582360A CN102074902A CN 102074902 A CN102074902 A CN 102074902A CN 201010582360 CN201010582360 CN 201010582360 CN 201010582360 A CN201010582360 A CN 201010582360A CN 102074902 A CN102074902 A CN 102074902A
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- circuit breaker
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Abstract
The invention provides a visual alternating current distribution board with interlock protection function. The distribution board comprises a bus bar which is connected with an alternating current power supply and is provided with a circuit breaker and a contactor. The distribution board is characterized by also comprising a detection and acquisition unit, an interlock control unit and a comprehensive display unit, wherein the detection and acquisition unit is connected with the alternating current power supply and is used for acquiring the voltage value, the current value, the power factor and the power of the alternating current power supply; the interlock control unit is connected with the circuit breaker and the contactor and is used for acquiring state signals of the circuit breaker and the contactor, processing the state signals, outputting control signals and feeding the control signals back to the circuit breaker and the contactor, and the comprehensive display unit is connected with the detection and acquisition unit and the interlock control unit and is used for receiving signals and displaying states on different screens. Due to the adoption of visualization function and interlock protection function, real-time running of the alternating current power supply and a power supply network is monitored, and all switch protection elements in the alternating current distribution board are controlled and protected.
Description
Technical field
The present invention relates to exchange supply and distribution network.
Background technology
The AC distribution plate is a most important controller switching equipment in land usefulness, the electrical network peculiar to vessel, is responsible for the distribution that supplies to power consumption equipment, has comprehensive functions such as administration of power networks, protection, operation.Along with the development of modern science and technology, on the one hand controller switching equipment requires more and more perfectly to the defencive function of electrical network, and the user is also more and more higher to the requirement of the fail safe of full ship electric network synthetic operation, hommization for distribution panelboard on the other hand.
Along with the increase of AC network complexity, fail safe, reliability, the reasonability of the operation of AC distribution plate are more and more important.On the one hand, operating personnel are if shortage to the real-time understanding of whole network running status, often need be checked affirmation to electrical network for power status before the AC distribution plate is operated, and efficient is lower; On the other hand, operating personnel need guarantee clear, the suitable operation of brains when operating, and carry out in strict accordance with operational procedure, otherwise very easily misoperation may cause the dead electricity accident, and AC network and power consumption equipment are brought harmful effect.
Summary of the invention
The technical problem to be solved in the present invention is: the visual AC distribution plate that a kind of interlock protection function is provided.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: the visual AC distribution plate of tool interlock protection function, comprise and the joining busbar of AC power that busbar connects with circuit breaker and contactor, and it is characterized in that: it also comprises:
Detect collecting unit, link, be used to gather AC supply voltage value, current value, power factor and power with AC power;
The interlocked control unit connects with described circuit breaker and contactor, and described circuit breaker and contactor are got status signal, control signal is handled and exported to status signal fed back to described circuit breaker and contactor;
The synthetic display unit connects with detection collecting unit and interlocked control unit, receives every signal and split screen and carries out the state demonstration.
Press such scheme, described detection collecting unit is intelligent integrated sensor.
Press such scheme, described circuit breaker comprises that AC power control circuit breaker, busbar connect circuit breaker, bank electric control circuit breaker, transformer control circuit breaker and branch road control circuit breaker; Described contactor comprises AC power control contactor and shunt circuit contactor.
Press such scheme, described interlocked control unit comprises programmable logic controller (PLC) and expansion module and a plurality of relay, described each circuit breaker connects with a relay of interlocked control unit respectively, and described each contactor connects with a relay of interlocked control unit respectively.
Press such scheme, described synthetic display unit is made of intelligent LCDs and processing unit thereof, and described processing unit is an embedded type CPU; Adopt the RS485 communications protocol to connect between described programmable logic controller (PLC) and the embedded type CPU.
Press such scheme, described synthetic display unit comprises 5 kinds of split screen state interfaces, is respectively:
Standby interface shows manufacturer and monitoring content;
Loopback interface shows AC distribution plate topological diagram, each contactor state and each circuit-breaker status, by the different colours circuit whether electrical information is arranged;
Interface in parallel shows and compiles and the independent content in parallel relevant with AC power;
Data interface shows real-time voltage value, current value, performance number, frequency values and the power factor of all AC power;
Help the interface, show the explanation at above interface, comprise interface division, color scheme, button meaning and warning function.
Operation principle of the present invention is:
At first determine mutual restriction condition between each protection component according to the operation of power networks state, referred to herein as " interlocking condition ", promptly clearly when not satisfying this condition, some specific switch can not be closed, even hand switch also can't be manually closed, so just the adverse consequences that can effectively avoid operate miss to bring; Next is by rational software and hardware configuration mode, implements effectively " interlocking condition ".
The present invention realizes the reciprocal interlocking of protection component respectively from the hardware and software aspect: hardware is realized the implication of interlocking at control loops such as special protection component outline increase relays, and is additional to some closed conditions of this protection component; Software realizes that the implication of interlocking then is by programming, above-mentioned " interlocking condition " being compiled into the language that information processing component can be understood; At last, select reliable, safe information process unit to realize interlock protection to the protection switch element as the interlocked control unit.
In order to guarantee the validity of display unit, message transmission, the demonstration of clear and definite information clearly, complete display interface are its prerequisites rapidly and accurately.Good visual means can help the rapid exact grasp information needed of operating personnel, otherwise then may cause the affirmation repeatedly to electric network state to operating personnel's effect of misleading.
Beneficial effect of the present invention is:
1, introduced visualization function, realized real time execution monitoring to AC power and supply network, increased " human-computer interaction " between distribution panelboard and the operating personnel, for operating personnel provide perception indication very intuitively, make operating personnel can grasp power supply and the various states of electrical network rapidly, guide operating personnel's proper operation;
2, introduced the interlock protection function, realized control and protection to all switch protection elements in the AC distribution plate, avoided the power supply self-shield, shutdown or the improper parallel connection that cause owing to operate miss, the protection supply unit is injury-free; Avoided having reduced the probability of components and parts faults, improved the reliability of AC distribution plate self and the fail safe of AC network greatly owing to the impact to protection component such as electric net overload that operate miss causes, short circuit;
3, each object is provided with relay as state-detection point, simple possible; Choose the signal processing unit of programmable logic controller (PLC) (being PLC), and adopt the RS485 communications protocol between the embedded type CPU, can transmit data by efficiently and accurately;
4, display message is classified, and split screen shows, both guaranteed the integrality of all display message, shown the projecting point that each split screen information possesses again especially, operating personnel can select the split screen state interface as required, if the GPRS more information only need be switched between each shields, avoided owing to all information concentrates on data omission or the inconvenience selection useful information that single screen causes.
5, in order to show the human oriented design characteristics especially, help function can also be set, each screen information is had been described in detail, help operating personnel to understand and understand each on-screen-display message rapidly.
Description of drawings
Fig. 1 is the structured flowchart of one embodiment of the invention
Fig. 2 is the operation principle flow chart of one embodiment of the invention
Embodiment
Fig. 1 is the structured flowchart of one embodiment of the invention, sets up on existing AC distribution plate and detects collecting unit, interlocked control unit and synthetic display unit, to realize interlock protection and visualization function.
Detect collecting unit and AC power and link, be used to gather AC supply voltage value, current value, power factor and power.Present embodiment is provided with an intelligent integrated sensor spare as detecting collecting unit to every AC power, will detect 3 phase voltage value, 3 phase current values totally 6 parameters altogether, needs output current value, magnitude of voltage, power factor and power totally 4 kinds of parameters.
The interlocked control unit connects with described circuit breaker and contactor, and described circuit breaker and contactor are got status signal, control signal is handled and exported to status signal fed back to described circuit breaker and contactor.According to electric network composition, determine that AC power control circuit breaker and contactor, busbar connect the state of circuit breaker, bank electric control circuit breaker, shunt circuit contactor, transformer control circuit breaker and branch road control circuit breaker as detected object, each object is provided with auxiliary normally opened contact (relay) as the state-detection point, amounts to 36 monitoring points.Select reliable, safe information process unit to realize interlock protection to the protection switch element, the hardware carrier of present embodiment has been selected for use and has been widely used in marine system, technology maturation reliable Siemens S7-200 Programmable Logic Controller (PLC) and expansion module thereof.
The synthetic display unit comprises intelligent LCDs and processing unit thereof, connects with detection collecting unit and interlocked control unit, receives every signal and split screen and carries out the state demonstration.The processing unit of the intelligent LCDs that present embodiment is selected for use adopts the embedded version of the M of Celeron CPU, and dominant frequency is 800Hz, internal memory 256M, hard disk 4G, operating system adopts the embedded version of Microsoft WindowsXP, and the speed of service is fast, display frame is clear, and extensibility is strong.Embedded software is powerful, can the fast processing mass data; And adopted the RS485 communications protocol between the PLC, can efficiently and accurately transmission data.
Fig. 2 is the operation principle flow chart of one embodiment of the invention; show in the synthetic display unit after the various information state detection process; PLC detects judgement to relay, if satisfying closure condition then connects protection relay, does not then proceed to detect if do not satisfy closure condition.
Software among the present embodiment PLC is that the characteristic Design of manipulating at certain specific type ship forms.PLC requires to put in order relation between each circuit breaker, the contactor according to electrical network, has determined the interlocking condition, and has listed the interlock connection table.With bank electrical circuit breakers (5Q) is example, when using the bank electricity, require ship'ssupply to be forbidden without exception at net, a necessary condition can connecting of bank electrical circuit breakers this moment (5Q) is exactly that the control AC power is in off-state at the contactor (KM1-KM4) of net so.Form with form is expressed as follows:
The state of switch disconnects with " 0 " expression, and is closed with " 1 " expression, if in the above table KM1-KM4 any be one state, 5Q does not allow closure.5Q can closed condition also have a lot, and each circuit breaker of while, contactor have the condition that much must satisfy the ability closure again, adds up and has just formed " interlocking condition table ".
PLC accurately receives the status signal of each contactor and circuit breaker, after writing interlocking condition program, multiple information handled, and the output control signal, can effectively control switching on and off of each circuit breaker, contactor.
Determine the communications protocol between good intelligent LCDs and intelligent integrated sensor spare, the PLC, and compare interface separately, clearly transmit content and connecting line.
5 kinds of split screen state interfaces that the intelligence LCDs shows:
Standby interface---show manufacturer and monitoring main contents;
Loopback interface---show electrical network distribution single line topological diagram, show each contactor state and each circuit-breaker status, whether electrical information is arranged by the different colours circuit;
Interface in parallel---with the content aggregation in parallel relevant and independent, when the operator carries out the power supply parallel operation, can know clearly and treat and the correlation behavior in parallel of power supply and electrical network with power supply;
Real-time voltage value, current value, performance number, frequency values and the power factor of data interface---all power supplys of centralized displaying.
Help the interface---above several interfaces are described, comprise interface division, color scheme, button meaning, warning function etc., make man-machine interaction hommization more.
Detected state is accurate in the present embodiment, Monitoring Data is rapid; according to the interlocking condition; PLC can effectively control the state with the protection switch protection component; communication is normal between each link, exchanges data stable; the intelligence LCDs can accurately show every state-detection amount; the color floridity; be swift in response can be effective, real-time, show the operation of power networks state accurately, rapidly; show every operational factor; possesses warning function; can give the perception indication of operator's distinctness, finally realize the visual interlock protection function of AC distribution plate.
Claims (6)
1. have a visual AC distribution plate of interlock protection function, comprise and the joining busbar of AC power that busbar connects with circuit breaker and contactor, it is characterized in that: it also comprises:
Detect collecting unit, link, be used to gather AC supply voltage value, current value, power factor and power with AC power;
The interlocked control unit connects with described circuit breaker and contactor, and described circuit breaker and contactor are got status signal, control signal is handled and exported to status signal fed back to described circuit breaker and contactor;
The synthetic display unit connects with detection collecting unit and interlocked control unit, receives every signal and split screen and carries out the state demonstration.
2. the visual AC distribution plate of tool interlock protection function according to claim 1 is characterized in that: described detection collecting unit is intelligent integrated sensor.
3. the visual AC distribution plate of tool interlock protection function according to claim 1 and 2 is characterized in that: described circuit breaker comprises that AC power control circuit breaker, busbar connect circuit breaker, bank electric control circuit breaker, transformer control circuit breaker and branch road control circuit breaker; Described contactor comprises AC power control contactor and shunt circuit contactor.
4. the visual AC distribution plate of tool interlock protection function according to claim 3; it is characterized in that: described interlocked control unit comprises programmable logic controller (PLC) and expansion module and a plurality of relay; described each circuit breaker connects with a relay of interlocked control unit respectively, and described each contactor connects with a relay of interlocked control unit respectively.
5. the visual AC distribution plate of tool interlock protection function according to claim 4 is characterized in that: described synthetic display unit is made of intelligent LCDs and processing unit thereof, and described processing unit is an embedded type CPU; Adopt the RS485 communications protocol to connect between described programmable logic controller (PLC) and the embedded type CPU.
6. the visual AC distribution plate of tool interlock protection function according to claim 5 is characterized in that: described synthetic display unit comprises 5 kinds of split screen state interfaces, is respectively:
Standby interface shows manufacturer and monitoring content;
Loopback interface shows AC distribution plate topological diagram, each contactor state and each circuit-breaker status, by the different colours circuit whether electrical information is arranged;
Interface in parallel shows and compiles and the independent content in parallel relevant with AC power;
Data interface shows real-time voltage value, current value, performance number, frequency values and the power factor of all AC power;
Help the interface, show the explanation at above interface, comprise interface division, color scheme, button meaning and warning function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010582360 CN102074902B (en) | 2010-12-10 | 2010-12-10 | Visual alternating current distribution board with interlock protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010582360 CN102074902B (en) | 2010-12-10 | 2010-12-10 | Visual alternating current distribution board with interlock protection function |
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| CN102074902A true CN102074902A (en) | 2011-05-25 |
| CN102074902B CN102074902B (en) | 2012-11-14 |
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Cited By (4)
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| CN105284025A (en) * | 2013-05-31 | 2016-01-27 | 三菱电机株式会社 | Interlock display system for breaker and breaker |
| CN107482771A (en) * | 2017-08-01 | 2017-12-15 | 中国电力科学研究院 | A kind of intelligent power method and its intelligent power equipment for supporting power grid operation |
| CN108287491A (en) * | 2018-03-09 | 2018-07-17 | 广船国际有限公司 | A kind of device of bank electricity interlocking |
| CN110231796A (en) * | 2019-04-08 | 2019-09-13 | 苏州个纳科技有限公司 | A kind of vector automatic door control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105284025A (en) * | 2013-05-31 | 2016-01-27 | 三菱电机株式会社 | Interlock display system for breaker and breaker |
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| CN108287491A (en) * | 2018-03-09 | 2018-07-17 | 广船国际有限公司 | A kind of device of bank electricity interlocking |
| CN108287491B (en) * | 2018-03-09 | 2023-09-26 | 广船国际有限公司 | Shore power interlocking device |
| CN110231796A (en) * | 2019-04-08 | 2019-09-13 | 苏州个纳科技有限公司 | A kind of vector automatic door control system |
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| Publication number | Publication date |
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| CN102074902B (en) | 2012-11-14 |
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