CN103441509A - Reactive power compensation cabinet and control method - Google Patents
Reactive power compensation cabinet and control method Download PDFInfo
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Abstract
The invention discloses a reactive power compensation cabinet which comprises a plurality of reactive power compensation devices, a bus and a plurality of intelligent units. The reactive power compensation devices are communicated through the bus, and each reactive power compensation device is matched with one intelligent unit. The intelligent units are used for interacting hardware information of the reactive power compensation devices matched with the intelligent units with hardware information of the other reactive power compensation devices, used for arranging priorities of the hardware information of all the reactive power compensation devices and generating an identity information table with the hardware information and the priorities of all the reactive power compensation devices as the content. The intelligent units are further used for taking the reactive power compensation device with the highest priority as a host, the intelligent unit matched with the reactive power compensation device which is taken as the host is taken as a main control unit, and the other reactive power compensation devices are taken as auxiliary machines. The intelligent units matched with the reactive power compensation devices which are taken as the auxiliary machines are taken as auxiliary control units. In addition, the invention further provides a control method of the reactive power compensation cabinet. According to the reactive power compensation cabinet and the control method of the reactive power compensation cabinet, the problem that functions of the mainframe are lost is solved, and communication conflicts will not happen.
Description
Technical field
The present invention relates to the reactive power compensation technology field, particularly relate to a kind of reactive compensation cabinet and control method.
Background technology
The reactive compensation cabinet used in electric power system generally has a plurality of reactive compensation modules, a plurality of reactive compensation modules carry out composite measurement and control, need to drop into or exit some or a plurality of reactive compensation modules according to scene, purpose with the reactive power compensation that reaches expection, make the operation of electric power system economic security.Usually need one in above-mentioned a plurality of reactive compensation module as main frame, and carry out communication by this main frame and upper monitoring system of electric substation, to realize the reactive power compensation to electrical network.
But above-mentioned reactive compensation cabinet is when main frame is out of service for some reason, reactive compensation cabinet just loses composite measurement and controls function, thereby just can't normally move, and greatly affects the power supply quality of electric power system.
Forfeiture for the function that solves the reactive compensation cabinet caused because of hostdown, existing reactive compensation cabinet adopts the communication modes of many main frames, be about to each reactive compensation module of reactive compensation cabinet all as main frame, still, many host communications there will be the problem of communication conflict.
Summary of the invention
Based on this, be necessary the afunction produced because of hostdown for reactive compensation cabinet, and the problem of the communication conflict that adopts many host communications to occur, after being provided, a kind of hostdown can not produce afunction, and reactive compensation cabinet and the control method that can not produce the communication conflict.
A kind of reactive compensation cabinet, comprise a plurality of reactive-load compensators, bus and a plurality of intelligent cell, and described a plurality of reactive-load compensators are by the mutual communication of bus, and each reactive-load compensator mates an intelligent cell,
Described intelligent cell will be for carrying out alternately with the hardware information of the reactive-load compensator of its coupling and the hardware information of other reactive-load compensator, and for the priority of the hardware information of arranging all reactive-load compensators and generate and take the hardware information of all reactive-load compensators and the identity information table that priority is content, also for the reactive-load compensator that priority is the highest as main frame, the intelligent cell that will mate with the reactive-load compensator as main frame is as main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
Therein in embodiment, described main control unit is used for to the described hardware information that sends described main frame from control unit, described from control unit for not receiving hardware information that described main control unit sends and when the time of not receiving reaches default time threshold, to carry out alternately with hardware information and other hardware informations from the reactive-load compensator at control unit place of the reactive-load compensator of its coupling, and upgrade described identity information table, and the reactive-load compensator that priority is the highest is as new main frame, will be with the intelligent cell of reactive-load compensator as new main frame as new main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
Therein in embodiment, described main control unit will be also for carrying out alternately with the hardware information of the hardware information of the reactive-load compensator of its coupling and newly-increased reactive-load compensator, and in the priority of newly-increased reactive-load compensator during higher than the priority of the reactive-load compensator with described main control unit coupling, using newly-increased reactive-load compensator as new main frame, to be updated to new main control unit with the intelligent cell of newly-increased reactive-load compensator coupling, former main control unit is as from control unit.
In embodiment, described hardware information is network sequence number or hardware address therein.
In embodiment, described bus is RS485 bus or CAN bus therein.
In embodiment, also comprise total display device and upper location supervisory therein, described total display device is connected with described a plurality of intelligent cell communications, and described upper location supervisory is connected with described total display device communication.
A kind of control method according to reactive compensation cabinet described above comprises the following steps:
Described intelligent cell will carry out alternately with the hardware information of the reactive-load compensator of its coupling and the hardware information of other reactive-load compensator;
The priority and generate of arranging the hardware information of all reactive-load compensators be take the hardware information of all reactive-load compensators and the identity information table that priority is content;
The reactive-load compensator that priority is the highest is as main frame, the intelligent cell that will mate with the reactive-load compensator as main frame is as main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
In embodiment, also comprise the steps: therein
Described main control unit is to the described hardware information that sends described main frame from control unit;
Describedly from control unit, do not receiving hardware information that described main control unit sends and when the time of not receiving reaches default time threshold, to carry out alternately with hardware information and other hardware informations from the reactive-load compensator at control unit place of the reactive-load compensator of its coupling, and upgrade described identity information table;
Described reactive-load compensator priority is the highest from control unit is as new main frame, will be with the intelligent cell of reactive-load compensator as new main frame as new main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
In embodiment, also comprise the steps: therein
Described main control unit will carry out alternately with the hardware information of the hardware information of the reactive-load compensator of its coupling and newly-increased reactive-load compensator;
In the priority of newly-increased reactive-load compensator during higher than the priority of the reactive-load compensator with described main control unit coupling, will be updated to main control unit with the intelligent cell of newly-increased reactive-load compensator coupling, former main control unit is as from control unit.
Above-mentioned reactive compensation cabinet and control method, mutual by the hardware information between a plurality of reactive-load compensators, and according to hardware information judgement priority, and then using priority the highest reactive-load compensator as main frame, with the intelligent cell of reactive-load compensator as main frame coupling main control unit the most, other reactive-load compensator is as slave, thereby realizes the control of main frame to slave, to realize the reactive power compensation of reactive compensation cabinet.The present invention is without configuring separately main control unit, each reactive-load compensator all mates an intelligent cell and constantly only has a main frame operation to guarantee each, and need to drop in time or exit according to on-site actual situations the reactive power compensation that reactive-load compensator is finally realized reactive compensation cabinet, the problem that does not exist host function to lose, owing to only having a reactive-load compensator as main frame, the communication conflict can not occur.
The accompanying drawing explanation
The schematic diagram of the reactive compensation cabinet that Fig. 1 is an embodiment;
The flow chart of the control method of the reactive compensation cabinet that Fig. 2 is an embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, in one embodiment, a kind of reactive compensation cabinet, comprise a plurality of reactive-load compensators, bus and a plurality of intelligent cell, wherein, a plurality of reactive-load compensators are reactive-load compensator 1, reactive-load compensator 2, reactive-load compensator 3, reactive-load compensator 4 ... reactive-load compensator 2n-1 and reactive-load compensator 2n.Intelligent cell is intelligent cell 1, intelligent cell 2, intelligent cell 3, intelligent cell 4 ... intelligent cell 2n-1 and intelligent cell 2n.A plurality of reactive-load compensators are by the mutual communication of bus, and each reactive-load compensator configures an intelligent cell.
Intelligent cell will be for carrying out alternately with the hardware information of the reactive-load compensator of its coupling and the hardware information of other reactive-load compensator, and for the priority of the hardware information of arranging all reactive-load compensators and generate and take the hardware information of all reactive-load compensators and the identity information table that priority is content, also for the reactive-load compensator that priority is the highest as main frame, will be with the intelligent cell of reactive-load compensator as main frame as main control unit, using other reactive-load compensator as slave, will be with the control intelligent cell of reactive-load compensator as slave as from control unit.Usually, hardware information is network sequence number or hardware address, and bus is RS485 bus or CAN bus.
In specific embodiment, main control unit is for the hardware information to from control unit transmission main frame, from control unit for not receiving hardware information that main control unit sends and when the time of not receiving reaches default time threshold, to carry out alternately with hardware information and other hardware informations from the reactive-load compensator at control unit place of the reactive-load compensator of its coupling, and renewal identity information table, and the reactive-load compensator that priority is the highest is as new main frame, will be with the intelligent cell of reactive-load compensator as new main frame as new main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
In specific embodiment, main control unit will be also for carrying out alternately with the hardware information of the hardware information of the reactive-load compensator of its coupling and newly-increased reactive-load compensator, and in the priority of newly-increased reactive-load compensator during higher than the priority of the reactive-load compensator with the main control unit coupling, using newly-increased reactive-load compensator as new main frame, to be updated to new main control unit with the intelligent cell of newly-increased reactive-load compensator coupling, former main control unit is as from control unit.In the present embodiment, reactive compensation cabinet also comprises total display device and upper location supervisory, and total display device is electrically connected to a plurality of intelligent cells, and upper location supervisory is electrically connected to total display device.
Above-mentioned reactive compensation cabinet and control method, mutual by the hardware information between a plurality of reactive-load compensators, and according to hardware information judgement priority, and then using priority the highest reactive-load compensator as main frame, with the intelligent cell of reactive-load compensator as main frame coupling main control unit the most, other reactive-load compensator is as slave, thereby realizes the control of main frame to slave, to realize the reactive power compensation of reactive compensation cabinet.The present invention is without configuring separately main control unit, each reactive-load compensator all mates an intelligent cell and constantly only has a main frame operation to guarantee each, and need to drop in time or exit according to on-site actual situations the reactive power compensation that reactive-load compensator is finally realized reactive compensation cabinet, the problem that does not exist host function to lose, owing to only having a reactive-load compensator as main frame, the communication conflict can not occur.
As shown in Figure 2, in the present embodiment, a kind of control method of reactive compensation cabinet, the control for above-mentioned reactive compensation cabinet comprises the following steps:
Step S110, intelligent cell will carry out with the hardware information of the reactive-load compensator of its coupling and the hardware information of other reactive-load compensator alternately.
Step S120, the priority and generate of arranging the hardware information of all reactive-load compensators be take the hardware information of all reactive-load compensators and the identity information table that priority is content.
Step S130, the reactive-load compensator that priority is the highest is as main frame, will be with the intelligent cell of reactive-load compensator as main frame coupling as main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
In the present embodiment, the control method of reactive compensation cabinet, also comprise the steps:
Main control unit is to send the hardware information of main frame from control unit;
Do not receiving hardware information that main control unit sends and when the time of not receiving reaches default time threshold from control unit, to carry out alternately with hardware information and other hardware informations from the reactive-load compensator at control unit place of the reactive-load compensator of its coupling, and upgrade the identity information table;
Reactive-load compensator priority is the highest from control unit is as new main frame, will be with the intelligent cell of reactive-load compensator as new main frame as new main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
In the present embodiment, the control method of reactive compensation cabinet, also comprise the steps:
Main control unit will carry out alternately with the hardware information of the hardware information of the reactive-load compensator of its coupling and newly-increased reactive-load compensator;
In the priority of newly-increased reactive-load compensator during higher than the priority of the reactive-load compensator with the main control unit coupling, will be updated to main control unit with the intelligent cell of newly-increased reactive-load compensator coupling, former main control unit is as from control unit.
According to above-mentioned reactive compensation cabinet and control method, below for a concrete example, further illustrate the present invention:
The present embodiment selects HPD70 series reactive-load compensator to describe.Due to the otherness of components and parts, even different reactive-load compensator powers at synchronization, the clock of reactive-load compensator inside also can not be realized synchronous, so enter moment of main program also can not be synchronous.Suppose that worst error that reactive-load compensator successively enters main program is less than T1(and is set as 1S), therefore formulate following mechanism: wherein, below mechanism based on minimum baud rate 4800bps, calculate, support 9600bps fully, 19200bps and 38400bps etc.The number of supposing reactive-load compensator is N, establishes 1≤i≤N.
1) all reactive-load compensators all enter listening state and start corresponding listen timeout timer after entering main program, and overtime rule is that hardware address number is multiplied by fixed length time delay (the fixed length delay adjustments is 1s);
If the listen timeout timer of i reactive-load compensator does not hear the identity information frame of other reactive-load compensator within the overtime time limit, i reactive-load compensator sends its identity information frame, the listen timeout timer of i reactive-load compensator of zero clearing also enters connection status, start the connection overtime timer after entering connection status, overtime rule is that the maximum device number is multiplied by short time delay (short time delay is set as 20ms), if i reactive-load compensator listens to the identity information frame within the overtime time limit of its connection overtime timer, zero clearing connects overtime timer, the identity information of other reactive-load compensator that record listens to simultaneously, i reactive-load compensator listens to the identity information frame of other reactive-load compensator,
If the listen timeout timer of i reactive-load compensator listens to the identity information frame of other reactive-load compensator within the overtime time limit, by its listen timeout timer zero clearing and reset the listen timeout timer, overtime rule is that address number is multiplied by fixedly short time delay (the handshake frames byte number is multiplied by the twice of byte time 2ms), the identity information of other reactive-load compensator that record listens to simultaneously, if the listen timeout timer of i reactive-load compensator does not hear the identity information frame of other reactive-load compensator within the overtime time limit, i reactive-load compensator sends its identity information frame, the listen timeout timer of i reactive-load compensator of zero clearing also enters connection status,
Said process guarantees the equal identity information frame that can monitor all reactive-load compensators except self of each reactive-load compensator, each reactive-load compensator compares the identity information frame of self and all identity information frames that listen to, self have host identities or, from identity, with intelligent cell main control system and all slaves of the reactive-load compensator coupling that has host identities, move to realize the reactive power compensation of reactive compensation cabinet with the target power factor to determine.In addition, in said process, terminal presentation facility and upper location supervisory all can be monitored all information.
It should be noted that, each reactive-load compensator all sends information, all reactive-load compensators are all monitored the information of all reactive-load compensators except self as the identity information frame, and wherein, this identity information frame comprises the network sequence number of reactive-load compensator or the hardware address of reactive-load compensator.
2) reactive-load compensator that has host identities sends network polling request frame starting-up response overtime timer, while having the network poll acknowledgement frame from the reactive-load compensator of identity if receive within the overtime time limit of response timeout timer, zero clearing response timeout timer, while having the network poll acknowledgement frame from the reactive-load compensator of identity if do not receive within the overtime time limit, again retransmit, while still not receiving the network poll acknowledgement frame had from the reactive-load compensator of identity within the overtime time limit if send after 3 times, explanation do not receive network poll acknowledgement frame that have from the reactive-load compensator of identity and fault occurred, main frame will send broadcasting command it will be removed from the address information table.
3) have from the reactive-load compensator of identity and start the request timed out timer, the integral multiple that overtime rule is dispatching cycle (usually being set to 3 times), when receiving the network poll acknowledgement frame that network polling request frame or the slave of main frame to the slave transmission sends main frame, the request timed out timer all will zero clearing, otherwise slave will assert that network failure has appearred in main frame, then all slaves will repeat 1 above-mentioned process, each determines that according to the identity information frame of the identity information frame of self and other slave listened to having it has host identities still from identity from chance.
4) if there is new reactive-load compensator to enter network, the host-initiated overtime timer that newly networks, overtime rule is to be multiplied by 3 times of maximum network number of devices dispatching cycle, the identity information frame that the identity information frame that new reactive-load compensator sends if listen in new networking overtime timer and the new reactive-load compensator once listened in the past send start on the identity information frame of the new reactive-load compensator transmission that once listens to as a circle repeating query, and send its identity information frame at a circle repeating query aft engine, new reactive-load compensator is monitored the identity information frame of main frame transmission and new reactive-load compensator is once inquired, reply priority that the identity information comprised in the host identities information frame the is described priority higher than the identity information comprised in new reactive-load compensator identity information frame if do not receive, original host is still main frame, new reactive-load compensator is as slave, reply priority that the identity information comprised in the host identities information frame the is described priority lower than the identity information comprised in new reactive-load compensator identity information frame if receive, original host is updated to slave, and new reactive-load compensator is updated to main frame.
When realizing the reactive-load compensator networking, above-mentioned Four processes confirms whether main frame and slave, normal run time verification main frame and slave network failure occurs and drop into the new reactive-load compensator networked and confirm main frame and the function of slave, making reactive-load compensator just Once you begin move can continuous service, and each only has a reactive-load compensator to move to realize the reactive power compensation of this reactive compensation cabinet with the target power factor as host computer control main frame and all slaves constantly.
Above-mentioned reactive compensation cabinet and control method, mutual by the hardware information between a plurality of reactive-load compensators, and according to hardware information judgement priority, and then using priority the highest reactive-load compensator as main frame, with the intelligent cell of reactive-load compensator as main frame coupling main control unit the most, other reactive-load compensator is as slave, thereby realizes the control of main frame to slave, to realize the reactive power compensation of reactive compensation cabinet.The present invention is without configuring separately main control unit, each reactive-load compensator all mates an intelligent cell and constantly only has a main frame operation to guarantee each, and need to drop in time or exit according to on-site actual situations the reactive power compensation that reactive-load compensator is finally realized reactive compensation cabinet, the problem that does not exist host function to lose, owing to only having a reactive-load compensator as main frame, the communication conflict can not occur.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a reactive compensation cabinet, is characterized in that, comprises a plurality of reactive-load compensators, bus and a plurality of intelligent cell, and described a plurality of reactive-load compensators are by the mutual communication of bus, and each reactive-load compensator mates an intelligent cell,
Described intelligent cell will be for carrying out alternately with the hardware information of the reactive-load compensator of its coupling and the hardware information of other reactive-load compensator, and for the priority of the hardware information of arranging all reactive-load compensators and generate and take the hardware information of all reactive-load compensators and the identity information table that priority is content, also for the reactive-load compensator that priority is the highest as main frame, the intelligent cell that will mate with the reactive-load compensator as main frame is as main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
2. reactive compensation cabinet according to claim 1, it is characterized in that, described main control unit is used for to the described hardware information that sends described main frame from control unit, described from control unit for not receiving hardware information that described main control unit sends and when the time of not receiving reaches default time threshold, to carry out alternately with hardware information and other hardware informations from the reactive-load compensator at control unit place of the reactive-load compensator of its coupling, and upgrade described identity information table, and the reactive-load compensator that priority is the highest is as new main frame, will be with the intelligent cell of reactive-load compensator as new main frame as new main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
3. reactive compensation cabinet according to claim 1, it is characterized in that, described main control unit will be also for carrying out alternately with the hardware information of the hardware information of the reactive-load compensator of its coupling and newly-increased reactive-load compensator, and in the priority of newly-increased reactive-load compensator during higher than the priority of the reactive-load compensator with described main control unit coupling, using newly-increased reactive-load compensator as new main frame, to be updated to new main control unit with the intelligent cell of newly-increased reactive-load compensator coupling, former main control unit is as from control unit.
4. according to the described reactive compensation cabinet of any one in claims 1 to 3, it is characterized in that, described hardware information is network sequence number or hardware address.
5. reactive compensation cabinet according to claim 1, is characterized in that, described bus is RS485 bus or CAN bus.
6. reactive compensation cabinet according to claim 1, is characterized in that, also comprises total display device and upper location supervisory, and described total display device is connected with described a plurality of intelligent cell communications, and described upper location supervisory is connected with described total display device communication.
7. the control method according to the described reactive compensation cabinet of any one in claim 1 to 6, is characterized in that, comprises the following steps:
Described intelligent cell will carry out alternately with the hardware information of the reactive-load compensator of its coupling and the hardware information of other reactive-load compensator;
The priority and generate of arranging the hardware information of all reactive-load compensators be take the hardware information of all reactive-load compensators and the identity information table that priority is content;
The reactive-load compensator that priority is the highest is as main frame, the intelligent cell that will mate with the reactive-load compensator as main frame is as main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
8. the control method of reactive compensation cabinet according to claim 7, is characterized in that, also comprises the steps:
Described main control unit is to the described hardware information that sends described main frame from control unit;
Describedly from control unit, do not receiving hardware information that described main control unit sends and when the time of not receiving reaches default time threshold, to carry out alternately with hardware information and other hardware informations from the reactive-load compensator at control unit place of the reactive-load compensator of its coupling, and upgrade described identity information table;
Described reactive-load compensator priority is the highest from control unit is as new main frame, will be with the intelligent cell of reactive-load compensator as new main frame as new main control unit, using other reactive-load compensator as slave, will be with the intelligent cell of reactive-load compensator as slave as from control unit.
9. the control method of reactive compensation cabinet according to claim 7, is characterized in that, also comprises the steps:
Described main control unit will carry out alternately with the hardware information of the hardware information of the reactive-load compensator of its coupling and newly-increased reactive-load compensator;
In the priority of newly-increased reactive-load compensator during higher than the priority of the reactive-load compensator with described main control unit coupling, will be updated to main control unit with the intelligent cell of newly-increased reactive-load compensator coupling, former main control unit is as from control unit.
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Application publication date: 20131211 |