Background technology
IEC 61850 has used for reference the general substation state event (GSSE) of communal facility communication system (UCA), has introduced the transformer substation case (GOOSE) towards general object.The GOOSE service is based on high speed P2P communication, and it has replaced hard wired communication between traditional intelligent electronic device (IED), cuts the high-efficiency reliable method fast for the communication between logical node provides.
The GOOSE solution is one of main feature of digital transformer substation, also is the dispute the best part.GOOSE makes that digital transformer substation has been abandoned between the various devices, hard connecting line such as between the control flow, and advantage is very obvious, but has brought problems such as various relevant reliabilities, fail safe thereupon.IEC has defined very strict time index and has guaranteed its performance for this reason, comprises the losing of corresponding data validity inspection and message, verification, retransmission mechanism simultaneously in GOOSE message, receives the message of expection and carries out corresponding operation to guarantee IED.
In order to guarantee the substation operation reliability, domestic most of transformer station all requires dualization of equipment, is equipped with as two-node cluster hot backup, two net heat etc.IEC does not relate to contents such as double-network communication, protective device and measure and control device and control box control communication in agreements such as formulation GOOSE, obviously this can not satisfy the reliability service requirement of domestic most of digital transformer substation.In two communications of carrying out control data on the net, can effectively improve the rapidity and the redundancy of control data by the GOOSE agreement, but also make the dangerous, unreliable of system's change.Two net reliable control method based on GOOSE mechanism can be used as replenishing of IEC61850, effectively address the above problem.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the present invention proposes a kind of two net reliable control method and can be used as replenishing of IEC61850 based on GOOSE mechanism, solve the problems referred to above in the background technology effectively.
The present invention adopts following technical scheme: a kind of double-network control method based on general substation state event mechanism, and this method comprises:
1) in the transmission data configuration GOOSE controll block of general substation incident (GOOSE) communication of protective device and measure and control device, increases private data " control application type " information; Receiving in the general substation incident (GOOSE) of the control box device of primary equipments such as console switch, disconnecting link (be used in a kind of digital transformer substation) increases private data " control application type " and " protection is moved reset time " information among the data configuration GOOSE INPUT; " control application type " information among GOOSE controll block and the GOOSE INPUT must be consistent; Protective device or measure and control device general substation incident (GOOSE) communications protocol are not done any change, guarantee the validity and the integrality of general substation incident (GOOSE) mechanism;
2) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 0 o'clock, is used for the mutual communication between the transformer station measurement and control device, does not do control and treatment;
3) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 1 o'clock, determine startup and the involution that move the same period by protective device decision protection action launching and involution, measure and control device, by the GOOSE communication packet order is sent to control box then; After control box is received the starting command message, directly carry out the starting command that receives; If the involution command message that control box receive to receive and the starting command message of reception " moving reset time " in the GOOSE INPUT, control box is directly carried out the involution order of reception; Otherwise control box keeps starting command to dispose among the GOOSE INPUT action is carried out the involution order after reset time again; (too small in order to prevent reset time, the reverse current that causes actuation coil impacts and damages actuating relay, the action command of protective device or measure and control device and the time interval of involution can not less than the action reset time of disposing among the control box GOOSE INPUT)
4) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 2 o'clock, startup by protective device decision protection action or the measure and control device decision action same period, in GOOSE data set (GOOSE DATASET), increase the corresponding actions retention time simultaneously, by the GOOSE communication packet order is sent to control box then; After control box is received the starting command message, directly carry out the starting command that receives; If the action retention time is carried out the involution order greater than " action reset time " among the GOOSEINPUT after the action retention time that control box keeps starting command to dispose in the GOOSE data set (GOOSEDATASET) again in the GOOSE data set (GOOSE DATASET); Otherwise control box keeps starting command to dispose among the GOOSE INPUT action is carried out the involution order after reset time again;
5) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 3 o'clock, and the startup by protective device decision protection action or the measure and control device decision action same period sends to control box by the GOOSE communication packet with order then; After control box is received the starting command message, directly carry out the starting command that receives; And carry out the involution order again after action reset time that starting command is kept disposing among the GOOSE INPUT;
The present invention can effectively improve two network control system reliabilities of digital transforming plant protecting device and measure and control device, for the safe operation of digital transformer substation brings guarantee.
Lot of domestic and international producer has all developed the protective device and the measure and control device of digital transformer substation at present, has also all comprised the controlled function of general substation state event (GOOSE) mechanism, and the homogeneity competition is very fierce.Adopt the present invention not only can effectively improve two network control system reliabilities of digital transforming plant protecting device and measure and control device, for the safe operation of digital transformer substation brings guarantee.Can also improve the technology content of equipment, promote the competitiveness of product in market.
Embodiment
According to Figure of description technical scheme of the present invention is described in detail below.
The invention discloses a kind of two net reliable control method based on GOOSE mechanism, its content is:
1, reliable control method
1) in the transmission data configuration GOOSE controll block of general substation incident (GOOSE) communication of protective device and measure and control device, increases private data " control application type " information; Receiving in the general substation incident (GOOSE) of the control box device of primary equipments such as console switch, disconnecting link (be used in a kind of digital transformer substation) increases private data " control application type " and " protection is moved reset time " information among the data configuration GOOSE INPUT; " control application type " information among GOOSE controll block and the GOOSEINPUT must be consistent; Protective device or measure and control device general substation incident (GOOSE) communications protocol are not done any change, guarantee the validity and the integrality of general substation incident (GOOSE) mechanism;
2) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 0 o'clock, is used for the mutual communication between the transformer station measurement and control device, does not do control and treatment;
3) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 1 o'clock, determine startup and the involution that move the same period by protective device decision protection action launching and involution, measure and control device, by the GOOSE communication packet order is sent to control box then; After control box is received the starting command message, directly carry out the starting command that receives; If the involution command message that control box receive to receive and the starting command message of reception " moving reset time " in the GOOSE INPUT, control box is directly carried out the involution order of reception; Otherwise control box keeps starting command to dispose among the GOOSE INPUT action is carried out the involution order after reset time again; (too small in order to prevent reset time, the reverse current that causes actuation coil impacts and damages actuating relay, the action command of protective device or measure and control device and the time interval of involution can not less than the action reset time of disposing among the control box GOOSE INPUT)
4) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 2 o'clock, startup by protective device decision protection action or the measure and control device decision action same period, in GOOSE data set (GOOSE DATASET), increase the corresponding actions retention time simultaneously, by the GOOSE communication packet order is sent to control box then; After control box is received the starting command message, directly carry out the starting command that receives; If the action retention time is carried out the involution order greater than " action reset time " among the GOOSE INPUT after the action retention time that control box keeps starting command to dispose in the GOOSE data set (GOOSE DATASET) again in the GOOSE data set (GOOSE DATASET); Otherwise control box keeps starting command to dispose among the GOOSE INPUT action is carried out the involution order after reset time again;
5) GOOSE controll block and GOOSE INPUT " control application type " information configuration is 3 o'clock, and the startup by protective device decision protection action or the measure and control device decision action same period sends to control box by the GOOSE communication packet with order then; After control box is received the starting command message, directly carry out the starting command that receives; And carry out the involution order again after action reset time that starting command is kept disposing among the GOOSE INPUT;
Three data O of " control application type " information, 1,2,3 are configured according to the concrete application demand of digital transformer substation.
2, Netcom's communication method (explanation as shown in Figure 1)
1) message receives (message of current reception belongs to consolidated network with the last message that receives):
If the message ST numbering that the message ST of current reception numbering received more than or equal to the last time, message is effective.
If the message ST numbering that the message ST of current reception numbering received less than the last time, and error is smaller or equal to 3 o'clock, and message is invalid.If there is the MAC route on the network, because difference or other cause specific of routing algorithm exist the communication packet that sends earlier to lag behind the communication packet that the back is sent out in theory.Be difficult to during GOOSE uses occur, can determine whether this phenomenon is handled in the development process as required.Analyze by going up with practice in theory, even there is the MAC route in GOOSE in using, can not surpass 2 grades of routes at most, so the communication packet hysteresis should not surpass 3 bags
If message ST numbering that the message ST of current reception numbering received less than the last time and error were greater than 3 o'clock, message is effective.This phenomenon only may occur in that dispensing device is restarted or message numbering is overturn, the sort of situation no matter, and message all should be effective.
2) message receives (message of current reception does not belong to consolidated network with the last message that receives):
If the message ST numbering that the message ST of current reception numbering received greater than the last time, message is effective.
If the message ST of current reception numbering equals the last message ST numbering that receives, message is invalid.
If the message ST numbering that the message ST of current reception numbering received less than the last time, and error is smaller or equal to 100, and when two nets were worked simultaneously, message was invalid.According to snowslide test, when dispensing device simultaneously after two networks send communication packet, there are many parts of messages that lag behind another network in the communication packet of certain network.(as: dispensing device sends simultaneously 3 parts of messages in two nets because the offered load difference, exist receiving system to receive whole 3 parts of messages of a certain network after, just receive first part of message of another network).
If the message ST numbering that the message ST of current reception numbering received less than the last time, and error is smaller or equal to 100, and when two nets were not worked simultaneously, message was effective.This phenomenon occurs in receiving system receive the A of dispensing device (B) network packet after, dispensing device restarts, restarting back A (B) net because some reason is no longer worked, receiving system can only receive B (A) network packet, and the cause that the ST numbering restarts because of device in B (A) the Netcom news message, count from zero, this moment, message should be effective.
If the message ST numbering that the message ST of current reception numbering received less than the last time, and error is greater than 100 o'clock, and message is effective.This phenomenon only may occur in that dispensing device is restarted or message numbering is overturn, the sort of situation no matter, and message all should be effective.
3) message sends: communication packet,, sends by trigger mechanism if protective device exists protection action launching or involution order, measure and control device to have the startup or the involution order of the action same period by two net timed sending in real time according to configuration.(GOOSE mechanism regulation, when data changed, the ST numbering in the communication packet added).