CN101710712B - Automatic recovery method for power loss of shipping grid - Google Patents
Automatic recovery method for power loss of shipping grid Download PDFInfo
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- CN101710712B CN101710712B CN2009100578985A CN200910057898A CN101710712B CN 101710712 B CN101710712 B CN 101710712B CN 2009100578985 A CN2009100578985 A CN 2009100578985A CN 200910057898 A CN200910057898 A CN 200910057898A CN 101710712 B CN101710712 B CN 101710712B
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Abstract
The invention discloses an automatic recovery method for power loss of a shipping grid, comprising the processes that a plurality of sets compete to start when the grid loses power; and any one of the machine groups issues an instruction of switching on and issues a signal of interlocking after starting, wherein any one of sets determines whether to execute the instruction of switching on or not according to whether the signal of interlocking issued by other sets is received when issuing the instruction of switching on; the set executes the self instruction of switching on when not receiving the signal of interlocking issued by other sets; and the et cancels the instruction of switching on of the set when receiving the signal of interlocking issued by other sets and issues the instruction of switching on again according to the priority of self set and the set issuing the signal of interlocking. The automatic recovery method for power loss of the shipping grid ensures the rapidity of power loss treatment of the shipping electric fence, solves the problem of simultaneous switching on of the plurality of sets, and ensures the unicity and on-call of a switching-on net casting machine group.
Description
Technical field
The invention belongs to the Ship Electrical Power System technical field, relate in particular to the power loss of shipping grid restoration methods.
Background technology
Ship Electrical Power System can be divided into generating, transmission, distribution and load four major parts, and wherein power generation part mainly is for boats and ships provide electric energy, and it is made up of main electrical power plant, emergency power station (using on the civilian boat), storage battery (optional) and bank electricity (using when pulling in to shore) usually.When boats and ships normally navigate by water, supplied power to each power consumption equipment by main electrical power plant, break down at main electrical power plant, during the main busbar dead electricity, main distribution board sends the dead electricity signal to emergency switchboard, starts the emergency power station, and supplies power to emergency load.When boats and ships pull in to shore, by the bank electricity to the boats and ships electric.
During to mains supply, when stopping in emergency in net unit generation catastrophe failure, line voltage can descend fast be tending towards dead electricity, should start subsequent use unit as there being subsequent use unit in the main electrical power plant this moment, restores electricity as early as possible at main electrical power plant, and assurance equipment normally moves.
Current, some ripe boats and ships electric energy management system products all have the dead electricity auto restore facility, and the automatic recovery method for power loss of employing mainly contains following three kinds:
First kind, during electrical breakdown, the subsequent use unit starting that priority is high closes a floodgate to mains supply;
Second kind, during electrical breakdown, start many subsequent use units, the guest machine that priority is high makes up lock to mains supply;
The third during electrical breakdown, starts many subsequent use units, and start the winner earlier and close a floodgate, and other unit of software locking.
The shortcoming of first method is that the rapidity that network of ship restores electricity can't guarantee; Second and third kind method has improved the reliability of the fast quick-recovery of electrical breakdown to a certain extent, but still can't guarantee in the shortest time, to restore electricity, in addition; The third method does not have to consider when multicomputer occurring and send out the extreme case of interlocking signal simultaneously; How to carry out the switching order adjustment, this method might can't realize reliable locking when the how subsequent use unit of appearance is sent out interlocking signal simultaneously simultaneously.
Summary of the invention
Technical problem to be solved by this invention provides a kind of automatic recovery method for power loss of shipping grid; This method has not only guaranteed the rapidity of loss of shipping grid electric treatment; And solved many problems that unit closes a floodgate simultaneously, having guaranteed to close a floodgate cast net unit uniqueness, should need property.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of automatic recovery method for power loss of shipping grid; Its process is when electrical breakdown; Many unit competitions start; All send reclosing command behind arbitrary the unit starting and send interlocking signal to other unit; It is characterized in that: arbitrary unit determines whether to carry out reclosing command with the interlocking signal that other unit that whether receives sends when the reclosing command that sends, and when not receiving the interlocking signal that other unit sends, carries out this unit reclosing command, when receiving the interlocking signal that other unit sends, cancels this unit reclosing command and sends reclosing command again according to this unit and the priority of sending the unit of interlocking signal.
Adopt technique scheme; Automatic recovery method for power loss of shipping grid of the present invention at first makes all unit competitions start when electrical breakdown; This has guaranteed the rapidity that electrical breakdown is handled, the interlocking signal that other unit that whether receives when sending reclosing command then sends determine whether to carry out reclosing command guarantee to close a floodgate cast net unit uniqueness, should need property.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated:
Fig. 1 is the Ship Power Station system construction drawing.
Fig. 2 is for propagating electrical breakdown automatic recovery method flow chart.
Fig. 3 is the chain logical circuit that controller of the present invention adopted.
Embodiment
As shown in Figure 1, this is a Ship Power Station circuit system structure chart.In the present embodiment, adopt 4 units (being respectively No. 1 unit, No. 2 units, No. 3 units and No. 4 units).Every unit is made up of controller 101, main switch 102 and generator 103, and main switch 102 1 ends connect electrical network bus-bar 200, and the other end connects generator 103; Controller 101 has line voltage input, a reclosing command output, an interlocking signal output and three interlocking signal inputs; The reclosing command output connects main switch 102, and the interlocking signal output is connected to the interlocking signal input of other unit.
As shown in Figure 2, in case the controller 101 detection of grid dead electricity in each unit, just the generator in this unit 103 sends enabled instruction; After generator 103 started successfully, controller 101 read the voltage U of this unit, line voltage Um, rated voltage Ue; Rated frequency fe, this unit frequency f.As U＞85%Ue,, otherwise unsuccessful during f=fe for starting for to start successfully, resend enabled instruction, all be not activated success for 3 times if send, then carry out fault alarm and handle.
After the success of this unit starting, read line voltage once more, be not in power failure state (being that other unit is successfully to mains supply), then process ends like electrical network; Also be in power failure state like electrical network and then send reclosing command and send interlocking signal, read interlocking state (be this unit send reclosing command receive the state that other unit sends interlocking signal simultaneously) again to other unit.As not having interlocking state, reclosing command is carried out in then switching signal output; Main switch is closed a floodgate, read the main switch state then, close a floodgate successfully like main switch; Then process ends is unsuccessful like the main switch combined floodgate, then carries out troubleshooting (reporting to the police, rewrite set state).
As there is an interlocking state; This unit cancellation reclosing command reads the interlocking signal of other unit output then, confirms to send other unit sequence number of reclosing command according to the input port numbering; Again send reclosing command by the priority of each combined floodgate unit then; The highest like this unit, then rejudge the electrical breakdown state earlier and send reclosing command, other unit is then delayed time and is carried out.
Wherein, send simultaneously that the sequence number of each unit of reclosing command confirms through following steps:
1, confirms the machine group number that each controller is corresponding;
2, the interlocking signal line with other generator set controller connects by machine group number order from small to large;
3, confirm the machine group number that each interlocking signal input is corresponding according to this unit sequence number of setting, for example this machine sequence number is 2, and then the corresponding order of program acquiescence interlocking signal input port is 1,3,4;
4, read each interlocking input signal values, confirm the machine group number that interlocking is effectively corresponding.
As shown in Figure 3, this is the logical circuit that generator set controller of the present invention adopts.In this interlocking logical circuit; Electrical breakdown signal input part D1 connects with the input of door B2 and through not gate A1 and is connected and the input of a B1; Reclosing command input D2 respectively with another input of door B1 be connected with another input of door B2, be connected with the output of door B1 or the input of door E1; The input that is connected not gate A2 with the output of door B2; The output one tunnel of not gate A2 connects interlocking signal output D3; Another road connects respectively and the input of door B3 and the input of XOR gate C1 through not gate A3; Be connected the first interlocking signal input D4 with another input of door B3, be connected the second interlocking signal input D5 and the 3rd interlocking signal input D6 respectively with two inputs of door B4; With door B3 be connected two inputs with door B5 respectively with the output of door B4, be connected respectively with the output of door B5 or another input of door E1 and another input of XOR gate C1; The output of XOR gate C1 connects interlocking state flag bit D7; Or the output of door E1 is connected to closing relay J.
Wherein, three interlocking signal input D4, D5, D6 are that the interlocking signal that other generator set controller sends is imported to the interlocking of this machine; This machine of interlocking signal output D3 interlocking signal is the interlocking output to other generator set controller; One road XOR outputs to this controller interlocking state flag bit, is used for control flow and judges that the XOR input state is explained as follows:
00---this machine is not sent out reclosing command
11---this machine closes a floodgate
10---multimachine sends reclosing command
01---disarmed state
The XOR output state is explained as follows:
0---consistent with reclosing command
1---the reclosing command conflict
In conjunction with shown in Figure 1, be example with No. 1 generator set controller, when electrical network had electricity, the reclosing command of controller was directly exported through the circuit on top, drove main switch and closed a floodgate; When the electrical breakdown fault took place, the reclosing command that controller sends will pass through the judgement of interlock circuit and could export.When No. 1 controller sends reclosing command, the interlocking signal of switching signal and other unit with, as do not have other controller and send reclosing command, then logic is output as " 1 ", the output switching signal drives main switch and closes a floodgate; As exist other controller to send reclosing command, then logic is output as " 0 ", wouldn't export switching signal, by the interlocking state sign this information is passed to control program, redistributes reclosing command in proper order by each unit starting.
This circuit structure is simple, and real-time is high, exports correspondingly one by one with physical state, can not cause the difference on the logic determines.
But; Those skilled in the art will recognize that; Above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (2)
1. automatic recovery method for power loss of shipping grid; Its process is when electrical breakdown; Many unit competitions start; All send reclosing command behind arbitrary the unit starting and send interlocking signal to other unit; Arbitrary unit determines whether to carry out reclosing command with the interlocking signal that other unit that whether receives sends when the reclosing command that sends, when receiving the interlocking signal that other unit sends, do not carry out this unit reclosing command, it is characterized in that: when receiving the interlocking signal that other unit sends, cancel this unit reclosing command and send reclosing command again according to this unit and the priority of sending the unit of interlocking signal.
2. automatic recovery method for power loss of shipping grid according to claim 1; It is characterized in that: the unit that should send reclosing command at first again by priority also need be judged whether dead electricity of electrical network once more before sending reclosing command; Then send reclosing command like dead electricity, otherwise finish to recover flow process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100578985A CN101710712B (en) | 2009-09-15 | 2009-09-15 | Automatic recovery method for power loss of shipping grid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100578985A CN101710712B (en) | 2009-09-15 | 2009-09-15 | Automatic recovery method for power loss of shipping grid |
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| Publication Number | Publication Date |
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| CN101710712A CN101710712A (en) | 2010-05-19 |
| CN101710712B true CN101710712B (en) | 2012-01-11 |
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| CN2009100578985A Active CN101710712B (en) | 2009-09-15 | 2009-09-15 | Automatic recovery method for power loss of shipping grid |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218670B (en) * | 2014-02-14 | 2016-03-02 | 南通中远川崎船舶工程有限公司 | A kind of super-container vessel power interruption recovering starting method |
| CN111722582B (en) * | 2020-06-18 | 2021-06-08 | 常熟理工学院 | Switching-on control logic calculation method for marine generator switch and bus switch |
| CN111648884A (en) * | 2020-06-28 | 2020-09-11 | 东风商用车有限公司 | Engine air inlet preheating system based on electronic relay |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077168U (en) * | 1990-06-30 | 1991-05-15 | 中国人同解放军第二炮兵工程设计研究所 | Supply control device of stand-by generator group |
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2009
- 2009-09-15 CN CN2009100578985A patent/CN101710712B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077168U (en) * | 1990-06-30 | 1991-05-15 | 中国人同解放军第二炮兵工程设计研究所 | Supply control device of stand-by generator group |
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| CN101710712A (en) | 2010-05-19 |
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