CN203691063U - Intelligent transformer station centralized measurement and control apparatus - Google Patents
Intelligent transformer station centralized measurement and control apparatus Download PDFInfo
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- CN203691063U CN203691063U CN201420009342.5U CN201420009342U CN203691063U CN 203691063 U CN203691063 U CN 203691063U CN 201420009342 U CN201420009342 U CN 201420009342U CN 203691063 U CN203691063 U CN 203691063U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
The utility model discloses an intelligent transformer station centralized measurement and control apparatus. The apparatus comprises a digital sampling module, a management communication module, and a routine IO module. The digital sampling module comprises a PowerPC and an FPGA. The management communication module comprises a PowerPC, a DSP, and an FPGA. The routine IO module comprises a microcontroller, a state quantity acquisition circuit, and a switching value output circuit. The management communication module and the digital sampling module conduct data transmission through an M-LVDS bus technology. The management communication module and the routine IO module conduct data interaction through a CAN bus technology. The single apparatus of the utility model can replace multiple single-space measurement and control apparatuses used in conventional transformer stations so that the power grid construction cost is reduced. Moreover, the apparatus effectively improves the power grid operation reliability and guarantees the reasonable power grid load distribution.
Description
Technical Field
The utility model relates to a centralized measurement and control device of intelligent substation belongs to the electrical technology field.
Background
At present, a national grid company provides a strong smart grid, and a smart substation is an important part of the smart grid. Aiming at the continuous development of the intelligent transformer substation, the advanced application functions of the intelligent transformer substation monitoring system are required to be continuously enriched and strengthened. The definition of the intelligent substation in the intelligent substation technical guide issued by the national grid company is as follows: the intelligent substation: the intelligent equipment which is advanced, reliable, integrated, low-carbon and environment-friendly is adopted, basic functions of information acquisition, measurement, control, protection, metering, monitoring and the like are automatically completed by taking total-station information digitization, communication platform networking and information sharing standardization as basic requirements, advanced functions of real-time automatic control, intelligent adjustment, on-line analysis decision, cooperative interaction and the like of a power grid can be supported as required, and the transformer substation which interacts with adjacent transformer substations, power grid dispatching and the like is realized.
At present, secondary equipment of an intelligent substation mainly adopts a layered distributed structure, is oriented to intervals and has independent functions. The monitoring, control, protection, fault recording, measurement and metering are all devices with single function and independent of each other. The mode divided according to the functions and the intervals has high reliability, the failure of any device does not influence other functions and objects, and the expandability and the openness of the system are good. But also has the defects of repeated configuration of hardware, non-shared information, lack of overall coordination and function optimization, high investment cost and high operation and maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the development of utilizing process level intelligent technology provides good basis for transformer substation information sharing, data synthesis, provides a centralized measuring and control device of intelligent substation, improves intelligent substation secondary system's integration degree, has reduced transformer substation measuring and control device kind.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
the centralized measurement and control device for the intelligent substation comprises a digital acquisition module, a management communication module and a conventional IO module, wherein the management communication module is connected with the digital acquisition module through an M-LVDS bus, and the management communication module is connected with the conventional IO module through a CAN bus.
The digital sampling module comprises a PowerPC and an FPGA, and the PowerPC and the FPGA are connected through a PCIe bus.
The management communication module comprises a PowerPC, a DSP and an FPGA, wherein the PowerPC is respectively connected with the DSP and the FPGA through a double-port RAM.
The conventional IO module comprises a microprocessor, a switching value output circuit for finishing switching value output and a state quantity acquisition circuit for finishing state quantity acquisition, wherein the switching value output circuit and the state quantity acquisition circuit are connected with the microprocessor through a parallel data bus.
The DSP for managing the communication module is connected with the microprocessor of the conventional IO module through a CAN bus; and the FPGA of the management communication module is connected with the PowerPC of the digital acquisition module through an M-LVDS bus.
The utility model discloses the beneficial effect who reaches: by adopting the high-performance hardware platform, the integration of the single device to the multi-interval measurement and control functions is realized, the integration level of the equipment is improved on the premise of ensuring various technical indexes, and the construction and maintenance cost is reduced.
Drawings
FIG. 1 is a schematic structural view of the centralized measurement and control device of the present invention;
fig. 2 is a schematic diagram of a hardware structure of a communication management module of the centralized measurement and control device of the present invention;
fig. 3 is a schematic diagram of a hardware structure of a digital acquisition module of the centralized measurement and control device of the present invention;
fig. 4 is the utility model discloses centralized measurement and control device's conventional IO module hardware architecture schematic diagram.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and the following detailed description.
The utility model discloses a centralized measurement and control device of intelligent substation's hardware overall structure is shown in FIG. 1: the intelligent management system is of a three-module structure, and comprises a digital acquisition module, a management communication module and a conventional IO module, wherein the management communication module is connected with the digital acquisition module through an M-LVDS bus, and the management communication module is connected with the conventional IO module through a CAN bus. Wherein,
as shown in fig. 3, the digital sampling module includes a PowerPC and an FPGA, the PowerPC and the FPGA are connected through a PCIe bus, and the FPGA is configured to implement preliminary decoding of SV and GOOSE messages, and transmit data of the ASDU portion in the messages to the PowerPC through the PCIe bus; the PowerPC classifies the data from the FPGA, performs debouncing operation on the switching value signal, and performs effective value calculation processing on the alternating current value signal.
As shown in fig. 2, the management communication module includes a PowerPC, a DSP and an FPGA, and the PowerPC is connected to the DSP and the FPGA through a dual-port RAM, respectively, for digital interaction. The PowerPC is used for monitoring the temperature of the device in the running state of the module and other modules, operating and displaying a human-computer interface, communicating by a 61850MMS and printing information of the device. The DSP is used for realizing the synchronous functions in the measurement and control device, PMU, electric quantity measurement, remote control operation and other functions. The FPGA is used for realizing time synchronization decoding and time synchronization pulse output in the measurement and control device and is responsible for managing the dual-port RAM.
As shown in fig. 4, the conventional IO module includes a piece of microprocessor, a switching value output circuit for completing switching value output, and a state quantity acquisition circuit for completing state quantity acquisition. The switching value output circuit and the state quantity acquisition circuit are directly connected with the microprocessor through a parallel data bus. The conventional IO module is responsible for the output and input functions of the switching value and the state quantity.
The DSP of the management communication module is connected with the microprocessor of the conventional IO module through a CAN bus to carry out data interaction; and the FPGA of the management communication module is connected with the PowerPC of the digital acquisition module through an M-LVDS bus to perform data interaction.
The utility model discloses in management communication module and digital sampling module: 1. the PowerPC model MPC8321 of the Feichka company is adopted, the chip is a 32-bit industrial network communication processor with the main frequency reaching 333MHZ, is provided with a 32-bit double data transmission rate memory controller, a 32-bit Peripheral Component Interconnect (PCI) controller, a 16-bit local bus and four Direct Memory Access (DMA) channels, supports a 100Mbps Ethernet protocol and a high-level data link control protocol, and is a microprocessor chip which is widely applied in the fields of network and communication at present. The high-speed PowerPC core, together with the integrated network and communication peripheral equipment, provides a new system solution for establishing a high-end communication system for users, and is widely applied to practical engineering. 2. The FPGA chip adopts spartan-6 series FPGA of the sailing company, completes a large-capacity logic gate circuit, integrates a phase-locked loop, can carry out frequency multiplication on an external clock, has a dominant frequency of more than hundred megabytes, is high in operation speed, easy to program and flexible to apply, and integrates a plurality of modules such as serial interfaces, differential interfaces, PCIe, MAC and the like in the high-end FPGA chip.
PCIe bus is realized in the digital acquisition module through the scheme design of PowerPC + FPGA. PCIe devices support 3 types of address spaces, memory, IO, and configuration spaces, respectively. After configuration is successful, other equipment can be directly accessed through the address, and data sharing is achieved. PCIe controller on PowerPC chip, one Lane of external link, bus specification 1.x, speed 2.5Gbps, can be more convenient visit peripheral space address, can realize the space direct access of RC to EP through the configuration Outbound register, can let EP directly visit RC space through the Inbound register.
The PCIe high-speed bus technology is adopted to solve the problem of real-time transmission of single-CPU multi-path and large-capacity sampling data, and a DMA (direct memory access) technology is integrated, so that the data processing is more efficient, meanwhile, SV and GOOSE communication and measurement and control algorithms at multiple intervals are realized on one PowerPC (Power PC), the utilization rate of the PowerPC is improved, the data transmission delay is reduced, the integration of the platform is enhanced, and the integrated high-performance digital sampling platform is a new centralized high-performance digital sampling platform suitable for being pushed by an intelligent substation.
High-bandwidth synchronous data transmission among multiple nodes is completed between the management communication module and the digital sampling module through an M-LVDS technology, and the method is used for interaction and communication control of data such as effective calculated quantity, remote control information, remote signaling information and the like. M-LVDS, a Multipoint Low Voltage Differential Signaling (multi-point Low Voltage Differential Signaling), is a new member of the LVDS family. The technology is mainly aimed at high-speed multi-point interconnection application, the multi-point interconnection refers to interconnection application that a plurality of drivers or receiving devices share a single physical link, the application requires that a driving device has enough driving capability to drive multiple paths of loads, and simultaneously requires that the driving device and the receiving device can bear load change on a physical bus caused by single-board hot plug.
The M-LVDS standard can support data rates up to 500Mbps and a wide common-mode voltage range (+/-2V), as well as robust ESD protection to support hot-plug functionality. The M-LVDS solves the problem of electromagnetic interference (EMI) by controlling the slew rate and the output amplitude of output data, and in addition, the M-LVDS has LVDS low-voltage differential signal characteristics, so that the electromagnetic interference can be further reduced.
The utility model discloses adopt ADI company's ADSP21469 type microcontroller in managing communication module. The chip is a fourth generation SHARC processor, a 32-bit industrial-level microcontroller with the main frequency reaching 450MHz, and is based on a Single Instruction Multiple Data (SIMD) kernel, wherein the kernel supports a 32-bit fixed point and 32/40-bit floating point algorithm format. Has fast DSP function, powerful I/O control function, asynchronous communication serial port and I2The chip has the advantages of wide working temperature range and strong anti-interference capability, and is suitable for the field of industrial control. In the utility model through makingThe DSP + MircChip scheme design realizes a CAN2.0 standard-based field bus for controlling the input acquisition and output operation of a conventional IO module.
The utility model discloses a function implementation does:
1. SV and GOOSE message decoding and coding implementation
The utility model discloses a centralized measurement and control device is because need receive a plurality of spaced SV and GOOSE messages, and the data volume is very huge. Therefore, the design is realized by two steps, and the FPGA of the digital acquisition module realizes message sorting and preliminary decoding on SV and GOOSE messages received from the optical port. Because SV and GOOSE messages belong to link layer data, and the content of the message header is relatively fixed, the FPGA can easily separate messages to be received and processed from massive process layer messages, remove the message header and transmit effective data (ASDU) to the PowerPC of the digital acquisition module. And the PowerPC further analyzes the transmitted ASDU, and extracts the remote signaling data and the alternating current data in the ASDU for corresponding processing.
2 implementation of measurement calculation function
The utility model provides a centralized measurement and control device need handle the calculation to the alternating current volume data of a plurality of intervals, accomplishes many spaced calculation tasks by digital acquisition module's PowerPC to through adopting finite impulse response Filter (FIR) system, Hamming function window filtering algorithm and improved generation's Fourier algorithm, improved filter effect and computational accuracy, reduced the expense in the computational process.
3 implementation of synchronization function
The synchronous function of the measurement and control device refers to the operation of interconnecting the two power supplies through the circuit breaker, so that the amplitude, the phase and the frequency of the voltage of the two power supplies need to be specially calculated and processed, and the circuit breaker can be correctly switched on under the condition that a certain condition is met. For a centralized measurement and control device, a large amount of data processing is generated by the need to complete the synchronous operation of a multi-interval line. Use the DSP of management communication module to realize this utility model to can obtain higher computational accuracy through the improvement to Fourier phase difference algorithm, and reduced DSP calculation cost.
Implementation of 4-time synchronization function
The IRIG-B and pulse time tick signals input from outside are transmitted to an I/O port of a management communication module FPGA of the centralized measurement and control device after level conversion or electric/optical conversion and then through a photoelectric isolation and buffer device, the FPGA collects and decodes the signals, and time messages and pulse signals are resolved and transmitted to a microcontroller of a conventional IO module through a double-port RAM and the I/O port respectively to provide synchronization for measurement and opening.
5 implementation of the function of opening in and opening out
A state quantity signal acquisition and processing circuit of a conventional IO module of a centralized measurement and control device of an intelligent substation converts an input state quantity signal into a digital signal by adopting a photoelectric isolation technology, then a microcontroller acquires and analyzes the digital signal, calculates the pulse width of the input state quantity, transmits the pulse width to a management communication module through a CAN bus and forms a record. The management communication module receives the background remote control command, the DSP completes the pulse width of the output signal and the delay calculation between channels, the control signal is transmitted to the microprocessor of the conventional IO module through the CAN bus, the microprocessor outputs the pulse through the GPIO, and the pulse is output in a hollow node mode after being isolated by the cache device and the optical relay.
6 implementation of other functions
A man-machine interface part in the centralized measurement and control device of the intelligent substation adopts 320 multiplied by 240 dot-matrix liquid crystal, a microswitch type keyboard and an LED indicator lamp, the man-machine interface part is connected with a microcontroller through a serial bus, and an FPGA on a management communication module is used for address decoding access.
The utility model discloses an intelligent substation provides one kind and has that the integrated level is higher, intelligent measurement and control device that data processing and remote transmission function are stronger, and it has still reduced measurement and control device configuration quantity in the transformer substation when possessing complete measurement and control function and high accuracy measured value, can obtain good economic benefits and social.
The above-mentioned embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a centralized measurement and control device of intelligent substation which characterized in that: the intelligent management system comprises a digital acquisition module, a management communication module and a conventional IO module, wherein the management communication module is connected with the digital acquisition module through an M-LVDS bus, and the management communication module is connected with the conventional IO module through a CAN bus.
2. The centralized measurement and control device of an intelligent substation according to claim 1, characterized in that: the digital sampling module comprises a PowerPC and an FPGA, and the PowerPC and the FPGA are connected through a PCIe bus.
3. The centralized measurement and control device of an intelligent substation according to claim 1, characterized in that: the management communication module comprises a PowerPC, a DSP and an FPGA, wherein the PowerPC is respectively connected with the DSP and the FPGA through a double-port RAM.
4. The centralized measurement and control device of an intelligent substation according to claim 1, characterized in that: the conventional IO module comprises a microprocessor, a switching value output circuit and a state quantity acquisition circuit, wherein the switching value output circuit is used for finishing switching value output, the state quantity acquisition circuit is used for finishing state quantity acquisition, and the switching value output circuit and the state quantity acquisition circuit are connected with the microprocessor through a parallel data bus.
5. The centralized measurement and control device of an intelligent substation according to any one of claims 1 to 4, characterized in that: the DSP of the management communication module is connected with the microprocessor of the conventional IO module through a CAN bus; and the FPGA of the management communication module is connected with the PowerPC of the digital acquisition module through an M-LVDS bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420009342.5U CN203691063U (en) | 2014-01-07 | 2014-01-07 | Intelligent transformer station centralized measurement and control apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420009342.5U CN203691063U (en) | 2014-01-07 | 2014-01-07 | Intelligent transformer station centralized measurement and control apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483932A (en) * | 2015-08-27 | 2017-03-08 | 毕延勇 | A kind of digital control system of five axles servo digital control punch press |
| CN110134177A (en) * | 2018-11-30 | 2019-08-16 | 中电普瑞科技有限公司 | A kind of embedded system timing system and its method applied to smart grid |
| CN110865633A (en) * | 2019-12-04 | 2020-03-06 | 国网湖北省电力有限公司电力科学研究院 | Detection system and detection method for integrated measurement and control host of transformer substation |
-
2014
- 2014-01-07 CN CN201420009342.5U patent/CN203691063U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483932A (en) * | 2015-08-27 | 2017-03-08 | 毕延勇 | A kind of digital control system of five axles servo digital control punch press |
| CN110134177A (en) * | 2018-11-30 | 2019-08-16 | 中电普瑞科技有限公司 | A kind of embedded system timing system and its method applied to smart grid |
| CN110865633A (en) * | 2019-12-04 | 2020-03-06 | 国网湖北省电力有限公司电力科学研究院 | Detection system and detection method for integrated measurement and control host of transformer substation |
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