CN101707469A - Transformer operation control system based on RISC chip - Google Patents
Transformer operation control system based on RISC chip Download PDFInfo
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- CN101707469A CN101707469A CN200910228070A CN200910228070A CN101707469A CN 101707469 A CN101707469 A CN 101707469A CN 200910228070 A CN200910228070 A CN 200910228070A CN 200910228070 A CN200910228070 A CN 200910228070A CN 101707469 A CN101707469 A CN 101707469A
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Abstract
The invention discloses a transformer operation control system based on an RISC chip. The control system comprises a CPU, a signal exchange board, a power supply unit, an analog quantity input unit, a switching value input unit, a switching value output unit, a communication unit and a keyboard/display unit. The transformer operation control system based on an RISC chip has the advantages that: 1. the reliability and the rapidity of relay protection action are improved; 2.the whole control system has good adjusting performance and reliability; and 3. the probability of accidents of production halts and the like brought by false tripping or failure to operate due to relay protection is reduced, so that the stability of a power grid is enhanced.
Description
(1) technical field:
The invention belongs to relay protection of power system control technology field, especially a kind of transformer operation control system based on RISC (Reduced Instruction Set Computer---simple instruction set computer) chip.
(2) background technology:
Domestic power supply capacity and power consumption have all had development at full speed.The loss that the loss of electric energy and power failure bring national economy in the electric power system is more and more paid close attention to by everybody.In general, until electricity consumption need be through 3～5 transformation processes, so the not only total platform number of transformer is considerably beyond total platform number of generator from generating, power supply, and operating total capacity is also considerably beyond the total capacity of generator.Transformer is in the process of transformation and transmitted power, and self will produce active power loss and reactive power loss.Because total platform number of transformer is many, total capacity is big, in the various electric equipments in electric power system (comprising generator, transformer, power circuit, motor etc.), the total electric energy loss of transformer has accounted for about 10% of energy output, account for about 50% of electric power system line loss, and in rural power system, will account for 60～70%.This means that for the whole nation the total economic attrition of annual transformer is more than 1,000 hundred million kWh, is equivalent to an energy output than large power system.Therefore, manage to reduce the transformer electric energy loss, the problem of having become transformer manufacturer and sent out, supply, electricity consumption department paying close attention to jointly.China is an energy resource consumption big country, also is the country that an economy increases fast, saves energy and guarantee that the reliability of powering just seems necessary.Therefore, the design and research to transformer economic operation control and backup auto-activating device has certain theory value and very strong practical value.
(3) summary of the invention:
The objective of the invention is to invent a kind of transformer operation control system based on risc chip, it can overcome the deficiencies in the prior art, be a kind ofly measure accurately, action quick and precisely, reliable communications, practical, transformer operation control system that cost performance is high.
Technical scheme of the present invention: a kind of transformer operation control system based on risc chip, comprise the voltage transformer summation current transformer, it is characterized in that it is to be made of CPU element, handshaking plate, power subsystem, analog input unit, switching value input unit, switching value output unit, communication unit and keyboard/display unit; Wherein, said CPU element becomes two-way with handshaking plate, communication unit and keyboard/display unit and is connected; The input of said handshaking plate is connected with the output of power subsystem, analog input unit, switching value input unit, and its output is connected with the input of switching value output unit, by switching value output unit output relay outlet signal; Said power subsystem is by the 220V AC-powered; The input of said analog input unit connects gathers the voltage transformer summation current transformer, gathers ac voltage signal and ac current signal; Said switching value input unit is gathered the switching value input signal.
Above-mentioned said analog input unit is made up of voltage, electric current AC sampling front-end circuit, secondary voltage current transformer, filter circuit, amplifying circuit and A/D converter; The AC sampling front-end circuit is voltage, the current signal gathered, and through being transformed to the small voltage amount behind the secondary voltage current transformer, the small voltage amount is behind filter circuit and amplifying circuit, conversion A/D converter acceptable voltage range.
Above-mentioned said filter circuit adopts step low-pass active filter.
Above-mentioned said voltage, electric current AC sampling front-end circuit are made up of input saturation protection module, instrument transformer phase shift compensation and rc filter circuit and filtering, amplifying circuit; Wherein, constitute the input saturation protection module by voltage transformer T201; Constitute instrument transformer phase shift compensation and rc filter circuit by inductance L 201, capacitor C 202; Said filtering, amplifying circuit are made of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7 and capacitor C 1 and chip MAX4472; It is connected to conventional the connection.
Above-mentioned said CPU element comprises the E of 32 risc microcontroller MCF5282, multicircuit switch, maintenance isolation and level conversion
2PROM chip, clock chip BDM debugging interface, crystal oscillator and reseting module PHY chip, network interface CAN transceiver, RS232 transceiver, RS485 transceiver, isolation and network interface, LCD, LED and KEY interface, three-terminal voltage-stabilizing, 16 tunnel analog signals and 24 tunnel are opened into signal.
Above-mentioned said risc microcontroller comprises ColdFire V2 core processor kernel, debugging module, on-chip memory, power management, fast Ethernet controller, FlexCANFlexCAN module, UARTMCF5282, I2CI2C bus, QSPI formation serial peripheral interface module, QADCQADC transducer, cycle interruption timer, software watchdog timer, phase-locked loop clock module, interrupt control unit MCF5282, dma controller, GPIO and external bus.
Operation principle of the present invention: the switching value signal of each road voltage, current signal and the reflection transformer state of electric power system carries out filtering and conversion, isolation by analog quantity input plug-in unit and switching value input plug-in unit respectively, be transformed to and be fit to the signal that CPU handles, pass through calculating and the processing of CPU again, come the switching of control transformer by the exit relay in the switching value output inserter.Outside installing the analog signal (three-phase voltage, three-phase current etc.) of input keep through voltage/current conversion (TV/TA), anti-interference process, low-pass filtering, variable connector, sampling and the A/D conversion after, change digital signal into and enter CPU and handle.Wherein, voltage/current conversion (TV/TA), anti-interference process, low-pass filtering are finished in analog quantity input plug-in unit, and variable connector, sampling keep and the A/D conversion is finished in CPU card.
Superiority of the present invention is: 1. utilize the high performance digital signal process chip to realize the control of relaying protection action, improved the reliability and the rapidity of relaying protection action to a great extent; 2. the control hysteresis that has overcome FPGA (Field Programmable Gate Array) control technology and common singlechip chip technical finesse speed limit and caused, the untimely defective of action make The whole control system have good adjusting function and reliability; 3. reduce the probability that gets the accidents such as stopping production that malfunction or tripping bring because of relaying protection, and then strengthened the stability of electrical network.
(4) description of drawings:
Fig. 1 is the structured flowchart of the related a kind of transformer operation control system based on risc chip of the present invention.
Fig. 2 is voltage, the electric current AC sampling front-end circuit of the related a kind of transformer operation control system based on risc chip of the present invention.(wherein 2-a is the voltage sample front-end circuit, and Fig. 2-b is the current sample front-end circuit)
Fig. 3 is the related a kind of structural representation based on the CPU element in the transformer operation control system of risc chip of the present invention.
(5) embodiment:
Embodiment: a kind of transformer operation control system (see figure 1) based on risc chip, comprise the voltage transformer summation current transformer, it is characterized in that it is to be made of CPU element, handshaking plate, power subsystem, analog input unit, switching value input unit, switching value output unit, communication unit and keyboard/display unit; Wherein, said CPU element becomes two-way with handshaking plate, communication unit and keyboard/display unit and is connected; The input of said handshaking plate is connected with the output of power subsystem, analog input unit, switching value input unit, and its output is connected with the input of switching value output unit, by switching value output unit output relay outlet signal; Said power subsystem is by the 220V AC-powered; The input of said analog input unit connects gathers the voltage transformer summation current transformer, gathers ac voltage signal and ac current signal; Said switching value input unit is gathered the switching value input signal.
Above-mentioned said analog input unit is made up of voltage, electric current AC sampling front-end circuit, secondary voltage current transformer, filter circuit, amplifying circuit and A/D converter; The AC sampling front-end circuit is voltage, the current signal gathered, and through being transformed to the small voltage amount behind the secondary voltage current transformer, the small voltage amount is behind filter circuit and amplifying circuit, conversion A/D converter acceptable voltage range.
Above-mentioned said filter circuit adopts step low-pass active filter.
Above-mentioned said voltage, electric current AC sampling front-end circuit (see that Fig. 2-a, Fig. 2-b) are made up of input saturation protection module, instrument transformer phase shift compensation and rc filter circuit and filtering, amplifying circuit; Wherein, constitute the input saturation protection module by voltage transformer T201; Constitute instrument transformer phase shift compensation and rc filter circuit by inductance L 201, capacitor C 202; Said filtering, amplifying circuit are made of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7 and capacitor C 1 and chip MAX4472; It is connected to conventional the connection.
Above-mentioned said CPU element (see figure 3) comprises the E of 32 risc microcontroller MCF5282, multicircuit switch, maintenance isolation and level conversion
2PROM chip, clock chip BDM debugging interface, crystal oscillator and reseting module PHY chip, network interface CAN transceiver, RS232 transceiver, RS485 transceiver, isolation and network interface, LCD, LED and KEY interface, three-terminal voltage-stabilizing, 16 tunnel analog signals and 24 tunnel are opened into signal.
Above-mentioned said risc microcontroller comprises ColdFire V2 core processor kernel, debugging module, on-chip memory, power management, fast Ethernet controller, FlexCANFlexCAN module, UARTMCF5282, I2CI2C bus, QSPI formation serial peripheral interface module, QADCQADC transducer, cycle interruption timer, software watchdog timer, phase-locked loop clock module, interrupt control unit MCF5282, dma controller, GPIO and external bus.
Claims (5)
1. transformer operation control system based on risc chip, comprise the voltage transformer summation current transformer, it is characterized in that it is to be made of CPU element, handshaking plate, power subsystem, analog input unit, switching value input unit, switching value output unit, communication unit and keyboard/display unit; Wherein, said CPU element becomes two-way with handshaking plate, communication unit and keyboard/display unit and is connected; The input of said handshaking plate is connected with the output of power subsystem, analog input unit, switching value input unit, and its output is connected with the input of switching value output unit, by switching value output unit output relay outlet signal; Said power subsystem is by the 220V AC-powered; The input of said analog input unit connects gathers the voltage transformer summation current transformer, gathers ac voltage signal and ac current signal; Said switching value input unit is gathered the switching value input signal.
2. according to a kind of transformer operation control system described in the claim 1, it is characterized in that said analog input unit is made up of voltage, electric current AC sampling front-end circuit, secondary voltage current transformer, filter circuit, amplifying circuit and A/D converter based on risc chip; The AC sampling front-end circuit is voltage, the current signal gathered, and through being transformed to the small voltage amount behind the secondary voltage current transformer, the small voltage amount is behind filter circuit and amplifying circuit, conversion A/D converter acceptable voltage range.
3. according to a kind of transformer operation control system described in the claim 2, it is characterized in that said filter circuit adopts step low-pass active filter based on risc chip.
4. according to a kind of transformer operation control system described in the claim 1, it is characterized in that said CPU element comprises the E of 32 risc microcontroller MCF5282, multicircuit switch, maintenance isolation and level conversion based on risc chip
2PROM chip, clock chip BDM debugging interface, crystal oscillator and reseting module PHY chip, network interface CAN transceiver, RS232 transceiver, RS485 transceiver, isolation and network interface, LCD, LED and KEY interface, three-terminal voltage-stabilizing, 16 tunnel analog signals and 24 tunnel are opened into signal.
5. according to a kind of transformer operation control system described in the claim 1 based on risc chip, it is characterized in that said risc microcontroller comprises ColdFire V2 core processor kernel, debugging module, on-chip memory, power management, fast Ethernet controller, the FlexCANFlexCAN module, UARTMCF5282, the I2CI2C bus, QSPI formation serial peripheral interface module, the QADCQADC transducer, the cycle interruption timer, the software watchdog timer, the phase-locked loop clock module, interrupt control unit MCF5282, dma controller, GPIO and external bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910228070A CN101707469A (en) | 2009-11-09 | 2009-11-09 | Transformer operation control system based on RISC chip |
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| CN200910228070A CN101707469A (en) | 2009-11-09 | 2009-11-09 | Transformer operation control system based on RISC chip |
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| CN101707469A true CN101707469A (en) | 2010-05-12 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946148A (en) * | 2012-12-06 | 2013-02-27 | 广州南方电力集团科技发展有限公司 | Integrated power distribution terminal based on ColdFire |
| CN102957208A (en) * | 2012-09-19 | 2013-03-06 | 北开电气集团有限公司 | Intelligent monitoring device of power distribution transformer and control method thereof |
| CN103117597A (en) * | 2012-12-27 | 2013-05-22 | 北开电气集团有限公司 | Wind power generation box type transformer intelligent monitoring system and control method thereof |
| CN104333279A (en) * | 2014-10-23 | 2015-02-04 | 苏州市吴中区大陆电子设备厂 | Control system of transformer |
| CN104502767A (en) * | 2014-12-25 | 2015-04-08 | 南京因泰莱电器股份有限公司 | Tooling system for test of alternating-current analog quantity |
| CN108221837A (en) * | 2018-02-28 | 2018-06-29 | 天津中德应用技术大学 | Melting snow on turnout junction device and method of work based on the microprocessor of 16 bit |
| CN112302864A (en) * | 2019-07-31 | 2021-02-02 | 北京金风科创风电设备有限公司 | Transformer signal processing device, method and system |
| CN114217544A (en) * | 2021-11-02 | 2022-03-22 | 云南电网有限责任公司昆明供电局 | Relay protection outlet logic self-checking system and method |
-
2009
- 2009-11-09 CN CN200910228070A patent/CN101707469A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957208B (en) * | 2012-09-19 | 2014-07-30 | 北开电气集团有限公司 | Intelligent monitoring device of power distribution transformer and control method thereof |
| CN102957208A (en) * | 2012-09-19 | 2013-03-06 | 北开电气集团有限公司 | Intelligent monitoring device of power distribution transformer and control method thereof |
| CN102946148B (en) * | 2012-12-06 | 2015-07-15 | 广州南方电力集团科技发展有限公司 | Integrated power distribution terminal based on ColdFire |
| CN102946148A (en) * | 2012-12-06 | 2013-02-27 | 广州南方电力集团科技发展有限公司 | Integrated power distribution terminal based on ColdFire |
| CN103117597A (en) * | 2012-12-27 | 2013-05-22 | 北开电气集团有限公司 | Wind power generation box type transformer intelligent monitoring system and control method thereof |
| CN103117597B (en) * | 2012-12-27 | 2016-03-30 | 嘉善北开电气科技有限公司 | Wind power generation box type intelligent transformer monitoring system control method |
| CN104333279A (en) * | 2014-10-23 | 2015-02-04 | 苏州市吴中区大陆电子设备厂 | Control system of transformer |
| CN104502767A (en) * | 2014-12-25 | 2015-04-08 | 南京因泰莱电器股份有限公司 | Tooling system for test of alternating-current analog quantity |
| CN104502767B (en) * | 2014-12-25 | 2018-09-11 | 南京因泰莱电器股份有限公司 | A kind of fixture system for ac analog test |
| CN108221837A (en) * | 2018-02-28 | 2018-06-29 | 天津中德应用技术大学 | Melting snow on turnout junction device and method of work based on the microprocessor of 16 bit |
| CN112302864A (en) * | 2019-07-31 | 2021-02-02 | 北京金风科创风电设备有限公司 | Transformer signal processing device, method and system |
| CN112302864B (en) * | 2019-07-31 | 2023-01-20 | 北京金风科创风电设备有限公司 | Transformer signal processing device, method and system |
| CN114217544A (en) * | 2021-11-02 | 2022-03-22 | 云南电网有限责任公司昆明供电局 | Relay protection outlet logic self-checking system and method |
| CN114217544B (en) * | 2021-11-02 | 2024-02-27 | 云南电网有限责任公司昆明供电局 | Relay protection export logic self-checking system and method |
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Open date: 20100512 |