CN101841446A - Pilot channel transmission device, optical fiber differential protective device and method - Google Patents
Pilot channel transmission device, optical fiber differential protective device and method Download PDFInfo
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Abstract
The invention relates to a pilot channel transmission device, a pilot channel optical fiber differential protective device and a pilot channel optical fiber differential protective method, and belongs to the technical field of relay protection of electric power systems. The pilot channel optical fiber differential protective device comprises a merging unit, a pilot channel transmission device, differential protective devices, a fault wave recording device, an SMV network switch and a GOOSE network switch, wherein the GOOSE network switch is respectively connected with the pilot channel transmission device, the differential protective devices and the fault wave recording device; the merging unit, the differential protective devices, the pilot channel transmission device and the fault wave recording device are connected to the SMV network switch through an optical fiber interface; the pilot channel transmission device realizes the synchronous sampling of a home station and a transformer substation on the opposite side, and outputs sampling values of the transformer substation on the opposite side to the SMV network switch; and data with different formats is transformed by using a converter according to requirements, so that manufacturers of the differential protective devices at both ends of a transmission line do not need to be limited, and the compatibility of the protective devices is improved.
Description
Technical field
The present invention relates to vertical UNICOM pipeline transmission apparatus, fiber differential protection device and method; belong to the relay protection of power system technical field, especially in the digital transformer substation that adopts electronic current, voltage transformer based on the application in the electric substation automation system of IEC61850 standard communication protocol.
Background technology
The fibre-optic current differential protection more and more is adopted to the main protection of high pressure and ultra high-tension transmission line with its simple protection philosophy and good performance characteristic.The electric current of respectively holding that current differential protection requires to participate in differential current calculating must be sampled at synchronization.The both-end electric current that the differential protection of transmission line participates in calculating is in the double sampling value that is positioned at transmission line two ends current transformer, far the electric current double sampling value of both sides need be transferred to an other side by optical-fibre channel owing to be separated by.The double sampling of both-end electric current is not to finish at same device, so requirement need be carried out the sampling of both-end electric current synchronously or calculates the deviation of sampling instant so that carry out phase compensation.
Based on the fibre-optic current differential protection implementation method of electromagnetic current transducer is that sampling, transmission and the data sync of secondary current finished by same device (CPU).The function of differential protection comprises sampling and the transmission of finishing this side data, and reception is to side data and carry out the computing of sample-synchronous (or phase place correction) and differential protection logic.The data that vertical connection optical-fibre channel is transmitted be differential protection can sample of ac and switching value numerical value.Because the data transmission format and the content of the vertical connection of each makers' fiber differential protection device optical-fibre channel have nothing in common with each other, and cause the optical fiber differential protective at transmission line two ends must adopt same makers' device.
What adopt in digital transformer substation is electronic type voltage, current transformer; the sampling of secondary digital signal amount is finished by merge cells; merge cells is exported the sampled data that meets IEC61850-9-2 stipulations standard to the process layer network, and fiber differential protection device receives the sample information of digital quantity by network.
When transmission line is T wiring branched line or a plurality of branched line,, need the protective device of each side to carry out point-to-point optical-fibre communications with other side in order to finish optical fiber differential protective.Branch's number difference of circuit, then each device needs the optical communication interface of varying number to finish Data Receiving and transmission, and the hardware of protective device is difficult to unified, poor compatibility.
Summary of the invention
The purpose of this invention is to provide a kind of vertical UNICOM pipeline transmission apparatus that is independent of differential protection and has transformer station's both sides sample-synchronous function.
Another object of the present invention provides a kind of vertical UNICOM road fiber differential protection device; to solve owing to the data transmission format and the content of vertical connection optical-fibre channel are inequality; and the fiber differential protection device at restriction transmission line two ends must adopt same makers' device, makes the problem of hardware compatibility difference of protective device.
The 3rd purpose of the present invention provides a kind of vertical UNICOM road optical fibre differential protection method, to realize the sample-synchronous and the differential protection function of vertical UNICOM road fiber differential protection device.
Vertical UNICOM of the present invention pipeline transmission apparatus technical scheme is as follows, and this device comprises:
CPU card, in be provided with process layer data processing unit and vertical connection data processing unit, described process layer data processing unit is used for the transmitting-receiving of transformer station's station internal procedure layer data and the transmitting-receiving of synchronous and wall data by Ethernet interface respectively, and described vertical data processing unit is used for handling with the data transmit-receive of indulging the UNICOM road;
Optical-electrical converter is used for that the serial electric signal data are converted to light signal and is sent to the external fiber passage or the signal of telecommunication that the light signal of optical-fibre channel is converted to serial is input to CPU card;
Protocol converter is used for the serial data and the G703/E1 standard agreement data of CPU card are changed;
Described optical-electrical converter links to each other with CPU card respectively with protocol converter.
Further, also comprise pulse converter, this pulse converter links to each other with CPU card, be used for external fiber pulse or IEC1588 network to the time pulse input be converted to the hardware interrupts input of CPU card.
Further, when the SMV of transformer station network and GOOSE network common network, at least one Ethernet interface is set; When the SMV of transformer station network and the networking of GOOSE network difference, at least two Ethernet interfaces accordingly are set.
Vertical UNICOM of the present invention road fiber differential protection device technical scheme is as follows, and this device comprises:
Merge cells after being used to receive the signal of electronic current, voltage transformer, carries out double sampling according to sampling synchronization pulse to instrument transformer, exports standard compliant sampled value information to the SMV network switch;
Vertical UNICOM pipeline transmission apparatus comprises CPU card, optical-electrical converter and protocol converter, is provided with process side data processing unit and vertical connection data processing unit in the described CPU card; Vertical UNICOM duct device links to each other with vertical connection optical-fibre channel by optical-electrical converter, link to each other with the SDH network by protocol converter, Ethernet interface by process layer data processing unit links to each other with the SMV network switch, this device is used to realize the sample-synchronous of our station and offside transformer station, and exports standard compliant offside transformer station sampled value information to the SMV network switch;
Differential protection is used for receiving simultaneously the sampled value information that merge cells and vertical UNICOM road send from the SMV network switch, the sampled value of identical sampling sequence number is carried out the computing of differential current, stalling current and differential protection logic;
Fault wave recording device, be used for receiving the our station sampled data, receive the sampled value that offside transformer station transmits the process Synchronous Processing, after line failure from the SMV network switch, sampled data during by analysis circuit both sides fault, whether differentiate the relaying protection the result of the action correct;
The SMV network switch is used to receive merge cells and joins the sampled value information that transmission channel is sent with vertical, and information is reached differential protection, is used for the sampled value information of merge cells is sent to vertical UNICOM pipeline transmission apparatus;
The GOOSE network switch is used to receive the GOOSE information that vertical UNICOM pipeline transmission apparatus sends, and it is reached differential protection and fault wave recording device;
The GOOSE network switch links to each other with fault wave recording device with vertical UNICOM pipeline transmission apparatus, differential protection respectively; Merge cells, differential protection, vertical UNICOM pipeline transmission apparatus, fault wave recording device all are connected on the SMV network switch by optical fiber interface.
Further, also comprise jumping protective device far away, link to each other that the GOOSE information that is used for sending according to the GOOSE network switch is carried out telemechanical protection action with the GOOSE network switch.
Further; described vertical UNICOM pipeline transmission apparatus is provided with at least one; each vertical UNICOM pipeline transmission apparatus is used for the sample-synchronous of an our station merge cells and an offside circuit merge cells; if N end line differential protection, a N-1 vertical UNICOM's pipeline transmission apparatus of then every side configuration and a cover differential protection.
Vertical UNICOM of the present invention road optical fibre differential protection method is used for vertical UNICOM road fiber differential protection device, comprises step:
(a) after merge cells receives the signal of electronic current, voltage transformer, instrument transformer is carried out double sampling, export standard compliant sampled value information to the SMV network switch according to the sampling synchronization pulse signal;
(b) CPU card of vertical UNICOM pipeline transmission apparatus inside by optical-electrical converter and protocol converter sampling after, adopt trapezoidal algorithm and interpolation double sampling technology to realize our station and offside transformer station sample-synchronous;
(c) differential protection receives the sampled value information that merge cells and vertical UNICOM pipeline transmission apparatus send from the SMV network switch simultaneously; the sampled value of identical sampling sequence number is carried out the computing of differential current, stalling current and differential protection logic, and vertical UNICOM pipeline transmission apparatus sends sampled value information by the Ethernet interface of process layer data processing unit to the SMV network switch.
Further; vertical UNICOM pipeline transmission apparatus detects vertical UNICOM road state in real time by vertical connection data processing unit; when vertical UNICOM road occurs when unusual; produce GOOSE information; by process layer data processing unit GOOSE information is sent to the GOOSE network; differential protection receives the vertical UNICOM unusual GOOSE signal in road from the GOOSE network, and the differential protection logic is carried out real-time locking.
Further, vertical UNICOM's pipeline transmission apparatus realization our station and offside transformer station sample-synchronous step are as follows: vertical UNICOM pipeline transmission apparatus inserts the Synchronous Sampling Pulse signal with the same source of our station merge cells; The sampling instant that sends our station data message time and merge cells is synchronous, the deviation time of using the merge cells sampling instant of trapezoidal algorithm computation our station and offside transformer station; Vertical UNICOM pipeline transmission apparatus receives that offside transformer station comprises the sampled value information of sampled value and sample code, the deviation time according to the sampling instant of both sides transformer station is carried out the interpolation double sampling to the sampled value of offside transformer station, reach the both sides sampled data and approach the purpose that synchronization is gathered, and finish the sample-synchronous function.
Further, described sampling pulse signal be optical fiber pulse or IEC1588 network to the time signal.
Vertical UNICOM of the present invention pipeline transmission apparatus is the device that is independent of differential protection; have the both sides of making transformer station sample-synchronous function in use, like this with regard to need not because differential protection is changed vertical UNICOM pipeline transmission apparatus simultaneously to the difference of data transmission format and content.
Vertical UNICOM's road fiber differential protection device of the present invention and method; owing to be provided with the vertical UNICOM pipeline transmission apparatus that is independent of differential protection; this device is realized the sample-synchronous of our station and offside transformer station; and export standard compliant offside transformer station sampled value information to the SMV network switch; can as required the data of different transpost formats be changed with transducer; so just needn't require the transmission line two ends to adopt the differential protection of same producer, improve the compatibility of protective device.
When being applied to the differential protection of multiterminal transmission line; transformer station disposes a plurality of vertical UNICOMs pipeline transmission apparatus; each vertical UNICOM pipeline transmission apparatus is finished our station and the transfer of data of indulging the channel attached transformer station of connection and synchronous; differential protection receives the SMV sampled signal that a plurality of vertical UNICOMs pipeline transmission apparatus sends; finish the computing of differential current, stalling current and differential logic; so just make that multiterminal transmission line fiber differential protection device is same hardware platform, realize simply, be easy to expansion.
Description of drawings
Fig. 1 is a vertical UNICOM of the present invention pipeline transmission apparatus structural representation;
Fig. 2 is road fiber differential protection device structure one figure of vertical UNICOM of the present invention;
Fig. 3 is road fiber differential protection device structure two figure of vertical UNICOM of the present invention.
Embodiment
The present invention with in the digital transformer substation each at interval the SMV network and the GOOSE network respectively networking model be that example describes.
Vertical UNICOM of the present invention pipeline transmission apparatus comprises as shown in Figure 1:
CPU card, in be provided with process layer data processing unit and vertical connection data processing unit, described process layer data processing unit is used for the transmitting-receiving of transformer station's station internal procedure layer data and the transmitting-receiving of synchronous and wall data by Ethernet interface respectively, and described vertical data processing unit is used for handling with the data transmit-receive of indulging the UNICOM road;
Optical-electrical converter is used for that the serial electric signal data are converted to light signal and is sent to the external fiber passage or the signal of telecommunication that the light signal of optical-fibre channel is converted to serial is input to CPU card;
Protocol converter is used for the serial data and the G703/E1 standard agreement data of CPU card are changed;
Pulse converter, this pulse converter links to each other with CPU card, be used for external fiber pulse or IEC1588 network to the time pulse input be converted to the hardware interrupts input of CPU card;
Described optical-electrical converter, protocol converter and pulse converter link to each other with CPU card respectively.
When the SMV of transformer station network and GOOSE network common network, at least one Ethernet interface is set; When the SMV of transformer station network and the networking of GOOSE network difference, two Ethernet interfaces are set as shown in Figure 1, an Ethernet interface inserts the process layer network of transformer station, receives circuit secondary current sampling numerical value and secondary voltage sampling numerical value with IEC61850-9-2 stipulations standard to describe; Another Ethernet interface inserts in the wall network of transformer station, receives the GOOSE information that each need send to offside transformer station, and will send on the network with the GOOSE information pattern from the quantity of state that offside transformer station receives.
Vertical UNICOM of the present invention road fiber differential protection device as shown in Figure 2, this device comprises:
Merge cells after being used to receive the signal of electronic current, voltage transformer, carries out double sampling according to sampling synchronization pulse to instrument transformer, meets the sampled value information of IEC61850-9-2G stipulations standard to the output of the SMV network switch;
Vertical UNICOM pipeline transmission apparatus comprises CPU card, optical-electrical converter and protocol converter, is provided with process side data processing unit and vertical connection data processing unit in the described CPU card; Vertical UNICOM duct device links to each other with vertical connection optical-fibre channel by optical-electrical converter, link to each other with the SDH network by protocol converter, Ethernet interface by process layer data processing unit links to each other with the SMV network switch, this device is used to realize the sample-synchronous of our station and offside transformer station, and exports standard compliant offside transformer station sampled value information to the SMV network switch;
Differential protection is used for receiving simultaneously the sampled value information that merge cells and vertical UNICOM road send from the SMV network switch, the sampled value of identical sampling sequence number is carried out the computing of differential current, stalling current and differential protection logic;
Fault wave recording device, be used for receiving the our station sampled data, receive the sampled value that offside transformer station transmits the process Synchronous Processing, after line failure from the SMV network switch, sampled data during by analysis circuit both sides fault, whether differentiate the relaying protection the result of the action correct;
The SMV network switch is used to receive merge cells and joins the sampled value information that transmission channel is sent with vertical, and information is reached differential protection, is used for the sampled value information of merge cells is sent to vertical UNICOM pipeline transmission apparatus;
The GOOSE network switch is used to receive the GOOSE information that vertical UNICOM pipeline transmission apparatus sends, and it is reached differential protection and fault wave recording device;
The protective device of jumping far away links to each other with the GOOSE network switch, and the GOOSE information that is used for sending according to the GOOSE network switch is carried out telemechanical protection action;
The GOOSE network switch links to each other with fault wave recording device with vertical UNICOM pipeline transmission apparatus, differential protection respectively; Merge cells, differential protection, vertical UNICOM pipeline transmission apparatus, fault wave recording device all are connected on the SMV network switch by optical fiber interface.
Another vertical UNICOM road fiber differential protection device of the present invention as shown in Figure 3, this device comprises:
Merge cells after being used to receive the signal of electronic current, voltage transformer, carries out double sampling according to sampling synchronization pulse to instrument transformer, exports standard compliant sampled value information to the SMV network switch;
Vertical UNICOM's pipeline transmission apparatus 1 and vertical UNICOM pipeline transmission apparatus 2, each vertical UNICOM pipeline transmission apparatus all comprises CPU card, optical-electrical converter and protocol converter, is provided with process side data processing unit and vertical connection data processing unit in the described CPU card; Two vertical UNICOM duct devices link to each other with vertical connection optical-fibre channel 2 with vertical connection optical-fibre channel 1 by optical-electrical converter respectively, the sampled value information and the complete message frame of quantity of state information composition that are used for this side need be sent are sent to offside transformer station, two vertical UNICOM duct devices link to each other with the SDH network by protocol converter respectively, the message frame of this side is sent to offside transformer station, Ethernet interface by process layer data processing unit links to each other with the SMV network switch, this device is used to realize the sample-synchronous of our station and offside transformer station, and exports standard compliant offside transformer station sampled value information to the SMV network switch;
Differential protection is used for receiving simultaneously the sampled value information that merge cells and vertical UNICOM road send from the SMV network switch, the sampled value of identical sampling sequence number is carried out the computing of differential current, stalling current and differential protection logic;
Fault wave recording device, be used for receiving the our station sampled data, receive the sampled value that offside transformer station transmits the process Synchronous Processing, after line failure from the SMV network switch, sampled data during by analysis circuit both sides fault, whether differentiate the relaying protection the result of the action correct;
The SMV network switch is used to receive merge cells and joins the sampled value information that transmission channel is sent with vertical, and information is reached differential protection, is used for the sampled value information of merge cells is sent to vertical UNICOM pipeline transmission apparatus;
The GOOSE network switch is used to receive the GOOSE information that vertical UNICOM pipeline transmission apparatus sends, and it is reached differential protection and fault wave recording device;
The protective device of jumping far away links to each other with the GOOSE network switch, and the GOOSE information that is used for sending according to the GOOSE network switch is carried out telemechanical protection action;
The GOOSE network switch links to each other with fault wave recording device with vertical UNICOM pipeline transmission apparatus, differential protection respectively; Merge cells, differential protection, vertical UNICOM pipeline transmission apparatus, fault wave recording device all are connected on the SMV network switch by optical fiber interface.
The number of vertical UNICOM pipeline transmission apparatus is two in the present embodiment; but be not limited to two; each vertical UNICOM pipeline transmission apparatus is used for the sample-synchronous of an our station merge cells and an offside circuit merge cells; if N end line differential protection, a N-1 vertical UNICOM's pipeline transmission apparatus of then every side configuration and a cover differential protection.
Vertical UNICOM of the present invention road optical fibre differential protection method is used for vertical UNICOM road fiber differential protection device, and method is as follows:
Merge cells in the vertical UNICOM of the present invention road fiber differential protection device, differential protection, vertical UNICOM pipeline transmission apparatus, fault wave recording device all are connected on the SMV network switch by optical fiber interface; The GOOSE network switch links to each other with fault wave recording device with vertical UNICOM pipeline transmission apparatus, differential protection respectively; Vertical data processing unit in the CPU card of vertical UNICOM pipeline transmission apparatus is connected into optical-fibre channel and SDH network by optical-electrical converter, G703/e1-U protocol converter respectively, and process layer data processing unit links to each other with the GOOSE network switch with the SMV network switch by IEC61850-9-2, GOOSE Ethernet interface respectively.
After merge cells receives the signal of electronic current, voltage transformer, according to the sampling synchronization pulse signal instrument transformer is carried out double sampling, meet the sampled value information of IEC61850-9-2 stipulations standard to SMV network switch output, described sampling pulse signal be optical fiber pulse or IEC1588 network to the time; Vertical UNICOM pipeline transmission apparatus is by the Synchronous Sampling Pulse signal of pulse converter access with the same source of our station merge cells; Vertical UNICOM pipeline transmission apparatus receives the sample information of merge cells from the SMV network switch by the IEC61850-9-2 Ethernet interface, read configuration information as shown in table 1 below, identification needs the sampled value of transmission, the sampling instant that sends our station data message time and merge cells is synchronous, the deviation time of using the merge cells sampling instant of trapezoidal algorithm computation our station and offside transformer station;
Table 1 configuration information
Vertical UNICOM pipeline transmission apparatus receives transformer station's sampled value information information as shown in table 2 below that offside comprises sampled value and sample code from vertical UNICOM road, the deviation time according to the sampling instant of both sides transformer station is carried out the interpolation double sampling to the sampled value of offside transformer station, reach synchronous, meet the offside transformer station sampled value information of IEC61850-9-2 stipulations standard to the output of the SMV network switch with the our station sampled data; Differential protection receives the sampled value information that merge cells and vertical UNICOM pipeline transmission apparatus send from the SMV network switch simultaneously, vertical UNICOM pipeline transmission apparatus sends sampled value information by the Ethernet interface of process layer data processing unit to the SMV network switch, and differential protection carries out the computing of differential current, stalling current and differential protection logic to the sampled value of identical sampling sequence number; Vertical UNICOM pipeline transmission apparatus detects in real time to vertical UNICOM road state; when vertical UNICOM road occurs when unusual, produce GOOSE information, be sent to the GOOSE network; differential protection receives the vertical UNICOM unusual GOOSE signal in road from the GOOSE network, and the differential protection logic is carried out real-time locking.
Table 2
Claims (10)
1. vertical UNICOM pipeline transmission apparatus is characterized in that this device comprises:
CPU card, in be provided with process layer data processing unit and vertical connection data processing unit, described process layer data processing unit is used for the transmitting-receiving of transformer station's station internal procedure layer data and the transmitting-receiving of synchronous and wall data by Ethernet interface respectively, and described vertical data processing unit is used for handling with the data transmit-receive of indulging the UNICOM road;
Optical-electrical converter is used for that the serial electric signal data are converted to light signal and is sent to the external fiber passage or the signal of telecommunication that the light signal of optical-fibre channel is converted to serial is input to CPU card;
Protocol converter is used for the serial data and the G703/E1 standard agreement data of CPU card are changed;
Described optical-electrical converter links to each other with CPU card respectively with protocol converter.
2. vertical UNICOM according to claim 1 pipeline transmission apparatus, it is characterized in that: also comprise pulse converter, this pulse converter links to each other with CPU card, be used for external fiber pulse or IEC1588 network to the time pulse input be converted to the hardware interrupts input of CPU card.
3. vertical UNICOM according to claim 1 and 2 pipeline transmission apparatus is characterized in that: when the SMV of transformer station network and GOOSE network common network, at least one Ethernet interface is set; When the SMV of transformer station network and the networking of GOOSE network difference, at least two Ethernet interfaces accordingly are set.
4. vertical UNICOM road fiber differential protection device is characterized in that this device comprises:
Merge cells after being used to receive the signal of electronic current, voltage transformer, carries out double sampling according to sampling synchronization pulse to instrument transformer, exports standard compliant sampled value information to the SMV network switch;
Vertical UNICOM pipeline transmission apparatus comprises CPU card, optical-electrical converter and protocol converter, is provided with process side data processing unit and vertical connection data processing unit in the described CPU card; Vertical UNICOM duct device links to each other with vertical connection optical-fibre channel by optical-electrical converter, link to each other with the SDH network by protocol converter, Ethernet interface by process layer data processing unit links to each other with the SMV network switch, this device is used to realize the sample-synchronous of our station and offside transformer station, and exports standard compliant offside transformer station sampled value information to the SMV network switch;
Differential protection is used for receiving simultaneously the sampled value information that merge cells and vertical UNICOM road send from the SMV network switch, the sampled value of identical sampling sequence number is carried out the computing of differential current, stalling current and differential protection logic;
Fault wave recording device, be used for receiving the our station sampled data, receive the sampled value that offside transformer station transmits the process Synchronous Processing, after line failure from the SMV network switch, sampled data during by analysis circuit both sides fault, whether differentiate the relaying protection the result of the action correct;
The SMV network switch is used to receive merge cells and joins the sampled value information that transmission channel is sent with vertical, and information is reached differential protection, is used for the sampled value information of merge cells is sent to vertical UNICOM pipeline transmission apparatus;
The GOOSE network switch is used to receive the GOOSE information that vertical UNICOM pipeline transmission apparatus sends, and it is reached differential protection and fault wave recording device;
The GOOSE network switch links to each other with fault wave recording device with vertical UNICOM pipeline transmission apparatus, differential protection respectively; Merge cells, differential protection, vertical UNICOM pipeline transmission apparatus, fault wave recording device all are connected on the SMV network switch by optical fiber interface.
5. vertical UNICOM according to claim 4 pipeline transmission apparatus is characterized in that: also comprise jumping protective device far away, link to each other with the GOOSE network switch that the GOOSE information that is used for sending according to the GOOSE network switch is carried out telemechanical protection action.
6. according to claim 4 or 5 described vertical UNICOM pipeline transmission apparatus; it is characterized in that: described vertical UNICOM pipeline transmission apparatus is provided with at least one; each vertical UNICOM pipeline transmission apparatus is used for the sample-synchronous of an our station merge cells and an offside circuit merge cells; if N end line differential protection, a N-1 vertical UNICOM's pipeline transmission apparatus of then every side configuration and a cover differential protection.
7. a vertical UNICOM road optical fibre differential protection method is characterized in that, this method is used for vertical UNICOM road fiber differential protection device, comprises step:
(a) after merge cells receives the signal of electronic current, voltage transformer, instrument transformer is carried out double sampling, export standard compliant sampled value information to the SMV network switch according to the sampling synchronization pulse signal;
(b) CPU card of vertical UNICOM pipeline transmission apparatus inside by optical-electrical converter and protocol converter sampling after, adopt trapezoidal algorithm and interpolation double sampling technology to realize our station and offside transformer station sample-synchronous;
(c) differential protection receives the sampled value information that merge cells and vertical UNICOM pipeline transmission apparatus send from the SMV network switch simultaneously; the sampled value of identical sampling sequence number is carried out the computing of differential current, stalling current and differential protection logic, and vertical UNICOM pipeline transmission apparatus sends sampled value information by the Ethernet interface of process layer data processing unit to the SMV network switch.
8. vertical UNICOM according to claim 7 road optical fibre differential protection method; it is characterized in that: vertical UNICOM pipeline transmission apparatus detects vertical UNICOM road state in real time by vertical connection data processing unit; when vertical UNICOM road occurs when unusual; produce GOOSE information; by process layer data processing unit GOOSE information is sent to the GOOSE network; differential protection receives the vertical UNICOM unusual GOOSE signal in road from the GOOSE network, and the differential protection logic is carried out real-time locking.
9. vertical UNICOM according to claim 8 road optical fibre differential protection method, it is characterized in that vertical UNICOM pipeline transmission apparatus realization our station and offside transformer station sample-synchronous step are as follows: vertical UNICOM pipeline transmission apparatus inserts the Synchronous Sampling Pulse signal with the same source of our station merge cells; The sampling instant that sends our station data message time and merge cells is synchronous, the deviation time of using the merge cells sampling instant of trapezoidal algorithm computation our station and offside transformer station; Vertical UNICOM pipeline transmission apparatus receives that offside transformer station comprises the sampled value information of sampled value and sample code, the deviation time according to the sampling instant of both sides transformer station is carried out the interpolation double sampling to the sampled value of offside transformer station, reach the both sides sampled data and approach the purpose that synchronization is gathered, and finish the sample-synchronous function.
10. according to claim 7 or 9 described vertical UNICOM road optical fibre differential protection methods, it is characterized in that: described sampling pulse signal be optical fiber pulse or IEC1588 network to the time signal.
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| CN102208996B (en) * | 2011-05-18 | 2018-06-26 | 河南省电力公司 | Method is monitored for the network security of digital transformer substation network-enabled intelligent equipment |
| CN108549331A (en) * | 2017-12-08 | 2018-09-18 | 上海交通大学 | A kind of control centre-machine terminal communication system and method |
| CN109547693A (en) * | 2018-11-29 | 2019-03-29 | 惠州市德赛西威智能交通技术研究院有限公司 | Multi-sensor data synchronization system and image data synchronous method |
| CN110505259A (en) * | 2018-05-17 | 2019-11-26 | 许昌许继软件技术有限公司 | A kind of data processing method and device of intelligent substation |
| CN112421566A (en) * | 2020-11-10 | 2021-02-26 | 北京博阳慧源电力科技有限公司 | Pilot differential protection method based on Ethernet precision time protocol |
| CN112865036A (en) * | 2021-01-20 | 2021-05-28 | 南方电网科学研究院有限责任公司 | Data synchronization method and related device for double-end differential protection |
| CN113013852A (en) * | 2021-02-26 | 2021-06-22 | 许继集团有限公司 | Line protection optical fiber channel transmission data processing method and device |
| CN113708349A (en) * | 2020-05-21 | 2021-11-26 | 南京南瑞继保电气有限公司 | Differential protection method and device for power transmission and distribution line |
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| CN102208996B (en) * | 2011-05-18 | 2018-06-26 | 河南省电力公司 | Method is monitored for the network security of digital transformer substation network-enabled intelligent equipment |
| CN102623966A (en) * | 2012-04-01 | 2012-08-01 | 许继集团有限公司 | Differential protection method for bus |
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| CN108549331A (en) * | 2017-12-08 | 2018-09-18 | 上海交通大学 | A kind of control centre-machine terminal communication system and method |
| CN110505259A (en) * | 2018-05-17 | 2019-11-26 | 许昌许继软件技术有限公司 | A kind of data processing method and device of intelligent substation |
| CN109547693A (en) * | 2018-11-29 | 2019-03-29 | 惠州市德赛西威智能交通技术研究院有限公司 | Multi-sensor data synchronization system and image data synchronous method |
| CN113708349A (en) * | 2020-05-21 | 2021-11-26 | 南京南瑞继保电气有限公司 | Differential protection method and device for power transmission and distribution line |
| CN113708349B (en) * | 2020-05-21 | 2024-01-02 | 南京南瑞继保电气有限公司 | Differential protection method and device for power transmission and distribution line |
| CN112421566A (en) * | 2020-11-10 | 2021-02-26 | 北京博阳慧源电力科技有限公司 | Pilot differential protection method based on Ethernet precision time protocol |
| CN112421566B (en) * | 2020-11-10 | 2022-06-17 | 北京博阳慧源电力科技有限公司 | Pilot differential protection method based on Ethernet precision time protocol |
| CN112865036B (en) * | 2021-01-20 | 2022-08-30 | 南方电网科学研究院有限责任公司 | Data synchronization method and related device for double-end differential protection |
| CN112865036A (en) * | 2021-01-20 | 2021-05-28 | 南方电网科学研究院有限责任公司 | Data synchronization method and related device for double-end differential protection |
| CN113013852A (en) * | 2021-02-26 | 2021-06-22 | 许继集团有限公司 | Line protection optical fiber channel transmission data processing method and device |
| CN113013852B (en) * | 2021-02-26 | 2022-10-04 | 许继集团有限公司 | Line protection optical fiber channel transmission data processing method and device |
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