CN204481574U - A kind of high integration intelligent substation secondary device - Google Patents

A kind of high integration intelligent substation secondary device Download PDF

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Publication number
CN204481574U
CN204481574U CN201520173347.6U CN201520173347U CN204481574U CN 204481574 U CN204481574 U CN 204481574U CN 201520173347 U CN201520173347 U CN 201520173347U CN 204481574 U CN204481574 U CN 204481574U
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China
Prior art keywords
plate
motherboard
processing unit
intelligent substation
layer data
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CN201520173347.6U
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Chinese (zh)
Inventor
李岩
王林先
李莹
耿风慧
魏文明
孙天德
王丹
于克林
刘长青
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Binzhou Dong Li Electric Design Co Ltd
Integrated Electronic Systems Lab Co Ltd
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Binzhou Dong Li Electric Design Co Ltd
Integrated Electronic Systems Lab Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16Electric power substations

Abstract

The utility model belongs to power system automatic field, particularly relates to a kind of high integration intelligent substation secondary device.This device comprises a cabinet, is provided with ac analog collection plate, ordinary tap amount input/output board, process layer data processing plate, central processing unit plate, gps clock synchronous plate, liquid crystal display and human-machine interaction board, power panel simultaneously and assists the connection motherboard carrying out between above-mentioned each plate connecting in this cabinet.The several functions circuit such as the merge cells of dispersion originally, intelligent terminal, comprehensive control, relaying protection and synchronous phasor measurement are integrated in a device and complete by the utility model; reduce the secondary device quantity in engineering construction; effective reduction construction cost; the reliability of whole electrical secondary system can also be improved simultaneously, alleviate maintenance work intensity.

Description

A kind of high integration intelligent substation secondary device
Technical field
The utility model belongs to power system automatic field, particularly relates to a kind of high integration intelligent substation secondary device.
Background technology
For adapting to the basic demand of information digitalization and communication network, secondary system of intelligent substation there occurs the change of essence.In intelligent substation, the collection of primary side voltage, current signal is completed by instrument transformer and merge cells; The collection of circuit breaker, disconnecting link position and the execution of breaker tripping and closing order realize by intelligent terminal; All digitized signals are all shared within the scope of full station through process-level network.The electrical secondary system of intelligent substation, except original protective relaying device towards interval and measure and control device, will inevitably increase the new secondary device such as merge cells, intelligent terminal.If above-mentioned each function is realized by independent secondary device, secondary device in monospace will be caused too much, and bring the series of malpractice such as equipment funds have high input, installing space nervous and between device, cable connection is complicated, construction maintenance workload is large thus.Therefore, improve device integration, the device quantity reduced in monospace is the only way which must be passed of secondary system of intelligent substation optimal design.Particularly for the intelligent substation of low voltage grade, or low voltage level spacing in intelligent substation, improve device integrated level and have more urgency and realistic meaning.
Summary of the invention
For solving the problem; the utility model is used for reference in electronic technology, the communication technology about the current techique such as data acquisition, Survey control; devise a kind of multi-functional, integrated intelligent substation secondary device; all secondary device functions such as merge cells, intelligent terminal, Survey control and relaying protection can be realized; can the greatly configuration of simplified intelligent transformer station secondary system, installment and debugging, improve the integrated level of secondary device further.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of high integration intelligent substation secondary device, comprise a cabinet, be provided with ac analog collection plate in this cabinet simultaneously, ordinary tap amount input/output board, process layer data processing plate, central processing unit plate, gps clock synchronous plate, liquid crystal display and human-machine interaction board, the connection motherboard connected is carried out between power panel and auxiliary above-mentioned each plate, the input of ac analog collection plate is connected with the output of transformer station's electromagnetic transformer, its output is connected to process layer data processing plate and central processing unit plate respectively by connecting motherboard again after the conversion of A/D conversion chip, ordinary tap amount input/output board accesses after outside ordinary tap amount is converted to digital signal, and be sent to process layer data processing plate and central processing unit plate by connecting motherboard, the control command sent both simultaneously receiving drives the actuating of relay, process layer data processing plate is provided with multi-channel optical fibre Ethernet interface, is divided into SV receiving interface, SV transmission interface and GOOSE interface, gps clock synchronous plate comprises reception and the shaping circuit of GPS pps pulse per second signal, and by connect on motherboard pair time holding wire be connected with central processing unit plate, process layer data processing plate and ac analog collection plate, liquid crystal display and human-machine interaction board are made up of liquid crystal display circuit, key circuit and communication interface circuit, power panel is connected to above-mentioned other each plates except power panel by the power line connected on motherboard.
High voltage, big current can only be transformed to the secondary output signal of 100V/5A by the electromagnetic potential in electrical network primary system, current transformer, this directly processes for electronic equipment and still has difficulties, therefore the ac analog Acquisition Circuit of device completes voltage, the conversion again of electric current, isolation and re-shaping exercise, makes it to adapt with the incoming level of A/D conversion chip.A/D conversion chip, by Timer Controlling, starts analog-to-digital conversion with fixed sampling frequency, and the digital quantity converted is by connecting the data/address bus on motherboard, and a road is connected to process layer data processing plate, sends the transmission of mouth for merge cells SV; Another road is connected to central processing unit plate, for the calculating of Survey control, relay protection function.
In said apparatus, described ordinary tap amount input/output board adopts optocoupler to complete digitlization input and output.The collection of circuit breaker, disconnecting link position and various alarm status is responsible in the importation of ordinary tap amount input/output board, digitlization is realized by optocoupler, and by the signal after digitlization by connecting the data/address bus on motherboard, riches all the way gives process layer data processing plate, and the GOOSE information for intelligent terminal function sends; Another road sends to central processing unit plate, for having assisted measurement and relay protection function.The output of ordinary tap amount input/output board is by connecting the data/address bus on motherboard, receive the control command sent from process layer data processing plate or central processing unit plate, then drive the relay on this board to be switched on or switched off, finally complete the controlling functions of intelligent terminal.
SV Frame on the SV receiving interface receiving course layer network that process layer data processing plate provides, and itself and ac analog collection plate are carried out data merging by the digital quantity connecting the data/address bus on motherboard and send, finally be sent on process-level network by the SV transmission interface on process layer data processing plate again, receive for other intelligent apparatus; The transmission frequency of SV data is chosen as 1.2kHz, 2.4kHz or 4kHz.The GOOSE interface that process layer data processing plate provides is for obtaining the quantity of state information of other intelligent apparatus from process-level network, or the ordinary tap amount input state collected by this device is sent on process-level network in the mode of GOOSE Frame.
In said apparatus, described central processing unit plate adopts CPU, DSP dual chip as primary processor.The peripheral auxiliary circuits such as memory devices such as comprising SDRAM/FLASH/NVRAM, power supply circuits, watchdog circuit, clock circuit, bus driving circuits are provided simultaneously.Central processing unit plate is by the data/address bus on connection motherboard and other board swap datas.The observing and controlling of device, relay protection function and synchronous phasor measurement function are respectively by the software simulating in CPU and dsp chip, and the CPU and the dsp chip that possess these functions are matured products, and the utility model directly utilizes it to realize each function.
Preferably, described gps clock synchronous plate adopts the High Precision Crystal Oscillator chip of temperature-compensating.Still higher clock synchronization accuracy can be kept in a long time after blackout as GPS couple.
Preferably, described liquid crystal display and human-machine interaction board adopt lattice lcd display and control circuit thereof.Lattice lcd display and control circuit thereof is adopted to realize Chinese and English information displaying, for reflecting the real-time status of device, transaction record and warning information.The set information of user operation is then received by key circuit, is then sent to central processing unit plate through communication interface, connection motherboard.
The communication interface circuit of liquid crystal display and human-machine interaction board adopts RS485 communication mode.
The beneficial effects of the utility model:
The several functions circuit such as the merge cells 1, disperseed by script, intelligent terminal, comprehensive control, relaying protection and synchronous phasor measurement are integrated in a device and complete; reduce the secondary device quantity in engineering construction; effective reduction construction cost; the reliability of whole electrical secondary system can also be improved simultaneously, alleviate maintenance work intensity.
2, device can realize the access of conventional simulation amount and the synchronous data collection in IEC61850-9-2 digital quantity mixing access situation, and data after synchronous can be sent to process-level network with the form of digital quantity, solve in intelligent substation, low pressure feeder clearance sampled value not easily realizes the problem that full station is shared.
3, the SV data sampling rate of merge cells function and transmission frequency can be configured to 1.2kHz, 2.4kHz or 4kHz, to adapt to different demand, breach the restriction of the single transmission frequency of merge cells SV data.
4, signal when device can receive GPS couple, realize high-precision synchronous phasor measurement function, stable state, dynamic, transient state synchrodata can be provided for monitoring system of electric substation, grid dispatching center and distribution main website, for realizing providing basic data based on the higher layer applications of synchronous phasor measurement, solving conventional P MU device and to layout sparse problem.
Accompanying drawing explanation
Fig. 1 is external structure of the present utility model;
Fig. 2 is schematic block circuit diagram of the present utility model;
In figure, 1, cabinet.
Embodiment
Below in conjunction with accompanying drawing, enforcement of the present utility model is elaborated:
A kind of high integration intelligent substation secondary device, as shown in Figure 1, comprise a cabinet 1, in cabinet 1, be provided with following board: ac analog collection plate, ordinary tap amount input/output board, process layer data processing plate, central processing unit plate, gps clock synchronous plate, liquid crystal display and human-machine interaction board, power panel and connection motherboard.Connecting motherboard is installed on device backboard, and in order to provide the data wire between each board, control line is connected with power line.The power supply of power panel generator, is input as external 220V direct current or AC power, exports as 24V, 15V and 5V DC power supply, and each road DC power supply is connected to each board by the power line connecting motherboard.
The outside input of ac analog collection plate is the output of transforming plant primary electromagnetic transformer, rated value is voltage 100V, electric current 5A, through the Anti-aliasing Filter Circuits of ac analog collection plate, low-pass filter circuit and secondary voltage/power pack, no-load voltage ratio is respectively 100V/3.53V and 5A/3.53V, again after the modulate circuit of single-ended transfer difference, obtain the voltage signal that peak value is 5V, directly can be connected with 16 A/D conversion chips.Digital quantity signal after analog-to-digital conversion, be sent on the data wire of connection motherboard, a road is connected to process layer data processing plate, and another road is connected to central processing unit plate.
Ordinary tap amount input/output board adopts optocoupler that outside ordinary tap amount input signal is carried out digitlization, and the signal after digitlization is sent on the data wire of connection motherboard, wherein riches all the way gives process layer data processing plate, and the GOOSE information for intelligent terminal sends; Another road sends to central processing unit plate, for having assisted observing and controlling and relay protection function.Ordinary tap amount input/output board is by connecting the data/address bus on motherboard, receive the control command sent from process layer data processing plate or central processing unit plate, then the relay on this board is driven to be switched on or switched off, utilize the output contact of relay, compounding practice mechanism completes the controlling functions of circuit breaker.
Process layer data processing plate provides 8 road fiber optic network interfaces, and by physical chip access gigabit process layer Ethernet, 8 road optical fiber interfaces can support SV interface and GOOSE interface, and SV interface is divided into SV receiving interface and SV transmission interface by function.SV receiving interface receives sample values frame, and itself and ac analog collection plate are carried out data merging by the digital quantity connecting the data/address bus on motherboard and send, finally be sent on process-level network by other SV transmission interfaces again, receive for other intelligent secondary devices.The transmission frequency of SV data can be configured to 1.2kHz, 2.4kHz or 4kHz.GOOSE interface is used for reception and the transmission of GOOSE information.
Central processing unit plate adopts 32 bit CPU chips and 32 float-point DSP as two primary processor.Cpu chip has been used for the functions such as parameter management, transaction record, distant place communication; Dsp chip has been used for the functions such as Survey control, relaying protection and synchronous phasor measurement.These functions are the existing functions in chip, are mature technologies, directly apply at this.Information interaction is carried out by dual port RAM between CPU and DSP, and by the data/address bus on connection motherboard and other board swap datas.
The signal receiving circuit of gps clock synchronous plate completes reception and the shaping of GPS pps pulse per second signal, and by the pps pulse per second signal after process by connect on motherboard pair time holding wire, be distributed to central processing unit plate, process layer data processing plate and ac analog collection plate.Gps clock synchronous plate adopts the High Precision Crystal Oscillator chip of temperature-compensating, still can keep higher clock synchronization accuracy as GPS couple in a long time after blackout.
Liquid crystal display and human-machine interaction board are made up of lattice lcd display and control circuit, 7 key circuit and RS485 communication interface circuit.

Claims (5)

1. a high integration intelligent substation secondary device, comprise a cabinet (1), it is characterized in that: this cabinet is provided with ac analog collection plate in (1) simultaneously, ordinary tap amount input/output board, process layer data processing plate, central processing unit plate, gps clock synchronous plate, liquid crystal display and human-machine interaction board, the connection motherboard connected is carried out between power panel and auxiliary above-mentioned each plate, the input of ac analog collection plate is connected with the output of transformer station's electromagnetic transformer, its output is connected to process layer data processing plate and central processing unit plate respectively by connecting motherboard again after the conversion of A/D conversion chip, ordinary tap amount input/output board accesses after outside ordinary tap amount is converted to digital signal, and be sent to process layer data processing plate and central processing unit plate by connecting motherboard, the control command sent both simultaneously receiving drives the actuating of relay, process layer data processing plate is provided with multi-channel optical fibre Ethernet interface, is divided into SV receiving interface, SV transmission interface and GOOSE interface, gps clock synchronous plate comprises reception and the shaping circuit of GPS pps pulse per second signal, and by connect on motherboard pair time holding wire be connected with central processing unit plate, process layer data processing plate, ac analog collection plate, liquid crystal display and human-machine interaction board are made up of liquid crystal display circuit, key circuit and communication interface circuit, power panel is connected to above-mentioned other each plates except power panel by the power line connected on motherboard.
2. high integration intelligent substation secondary device according to claim 1, is characterized in that: described ordinary tap amount input/output board adopts optocoupler to complete digitlization input and output.
3. high integration intelligent substation secondary device according to claim 1, is characterized in that: described central processing unit plate adopts CPU, DSP dual chip as primary processor.
4. high integration intelligent substation secondary device according to claim 1, is characterized in that: described gps clock synchronous plate adopts the High Precision Crystal Oscillator chip of temperature-compensating.
5. high integration intelligent substation secondary device according to claim 1, is characterized in that: described liquid crystal display and human-machine interaction board adopt lattice lcd display and control circuit thereof.
CN201520173347.6U 2015-03-26 2015-03-26 A kind of high integration intelligent substation secondary device Active CN204481574U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107591775A (en) * 2017-08-07 2018-01-16 许继电气股份有限公司 It is a kind of to be used to connect intelligent and the device of conventional secondary device and transformer station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107591775A (en) * 2017-08-07 2018-01-16 许继电气股份有限公司 It is a kind of to be used to connect intelligent and the device of conventional secondary device and transformer station

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