CN101944779A - Digitalized full-function state monitoring and safety evaluation device of substation direct current system - Google Patents
Digitalized full-function state monitoring and safety evaluation device of substation direct current system Download PDFInfo
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- CN101944779A CN101944779A CN2010105195811A CN201010519581A CN101944779A CN 101944779 A CN101944779 A CN 101944779A CN 2010105195811 A CN2010105195811 A CN 2010105195811A CN 201010519581 A CN201010519581 A CN 201010519581A CN 101944779 A CN101944779 A CN 101944779A
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- direct current
- current system
- voltage
- measurement module
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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
Abstract
The invention relates to a digitalized full-function state monitoring and safety evaluation device of a substation direct current system, comprising a current measurement module, a voltage measurement module and an A/D converter, wherein the current measurement module and the voltage measurement module respectively transfer measured simulation signals after being converted by the A/D converter to a central processing unit, and relative data of an accumulator battery of the substation direct current system are displayed on a display unit after the measured simulation signals are processed by the central processing unit. The set of the devices contains all monitor contents of the substation direct current system and uses small equipment to replace a plurality of monitoring instruments in the prior art, thereby enhancing the integration degree, lowering the equipment cost, reducing fault points and increasing the reliable operation time of the system; and the device can further and deep analyze the data through a PC expert analysis software and know a critical state which is possible to occur, thereby fulfilling the function of safety prewarning and avoiding a plurality of safety problems and a large area power failure accident caused by a fault of the direct current system.
Description
Technical field
The present invention relates to battery condition monitoring and security evaluation device, particularly a kind of transformer station direct current system digital full functional status monitoring and security evaluation device.
Background technology
Batteries has consequence at the continuous-current plant of transformer station, and in charging process, battery pack can produce thermal runaway phenomenon, is a hidden danger of substation safety work.Thermal runaway is a kind of fault that occurs when charge in batteries, and temperature rises and follows and causes that the abnormal charging current of storage battery increases, and electric current can be increased to the degree that battery is steamed and begin to dry up; When storage battery was dry, internal resistance increased, and produced more heat, and the softening fault of cell body can take place, or caused plumbous part fusing under extreme case.
The Chinese invention patent that publication number is CN101004440A discloses a kind of accumulator internal resistance testing apparatus based on 485 bus modes, this device is provided with each test cell and monitoring means in described 485 bus structures, the test cell of each joint storage battery separate configurations and himself coupling, the built-in single-chip microcomputer of each test cell, and with single-chip microcomputer as in real time, the voltage measurement unit of repeated measurement this section accumulator voltage, for providing working power with the test cell that himself mates, single-chip microcomputer outputting communication signal is connected to the RS485 bus by optical coupling isolation circuit to each storage battery output voltage by voltage conversion circuit.This device can be monitored separately each battery in the batteries, the accuracy height, but each is saved storage battery all configuration testing unit and built-in single-chip microcomputer, the high-end devices that needs is more, make the cost of testing apparatus improve greatly, and each piece battery cell monitoring just needed a lot of bar lines of cloth, improved the installation and maintenance cost of supervising device like this.
Summary of the invention
The technical problem to be solved in the present invention has provided a kind of transformer station direct current system digital full functional status monitoring and security evaluation device.This device only need a monitoring equipment to cell voltage, charging and discharging currents, voltage ripple, current ripples, the loop of whole batteries scurry into voltage, discharge and recharge power, parameters such as charge-discharge energy, the internal resistance of cell, voltage voltage stabilizing rate, conversion efficiency monitor and record, parameter according to these records, thermal runaway state by fuzzy Judgment and expert system prediction batteries, under the prerequisite that does not influence the monitoring precision, greatly reduce the cost of equipment.
For solving the problems of the technologies described above, described transformer station direct current system digital full functional status monitoring and security evaluation device, mainly comprise shell, be arranged on the unit of display on the case surface, be located at central processing unit, FLASH data storage, geocoding and power module in the shell, the unit of display, FLASH data storage and geocoding are connected with central processing unit respectively, and power module provides power supply for device; It is characterized in that: in described shell, also be provided with current measurement module, voltage measurement module and A/D converter, current measurement module, voltage measurement module are transferred to central processing unit respectively with the analog signal that measures after the A/D converter conversion, after central processing unit is handled voltage scurried in cell voltage, charging and discharging currents, voltage ripple, current ripples, the loop of the batteries of transformer station direct current system, discharged and recharged power, related datas such as charge-discharge energy, the internal resistance of cell, voltage voltage stabilizing rate, conversion efficiency are presented on the unit of display.
Wherein, also be provided with on described shell and be used for RS485 PORT COM that this device is connected with host computer, the communication signal of central processing unit output is connected to the RS485 bus by optical coupling isolation circuit.On described shell, also be provided with usb connecting port.The described unit of display comprises a LCD display floater, two charactron and three LED light that are used to indicate three kinds of operating states that are used for the display alarm numbering.
Compared with prior art, the present invention is provided with current measurement module, voltage measurement module and A/D converter, current measurement module, voltage measurement module are transferred to central processing unit respectively with the analog signal that measures after the A/D converter conversion, after central processing unit is handled voltage scurried in cell voltage, charging and discharging currents, voltage ripple, current ripples, the loop of the batteries of transformer station direct current system, discharged and recharged power, related datas such as charge-discharge energy, the internal resistance of cell, voltage voltage stabilizing rate, conversion efficiency are presented on the unit of display.This covering device has comprised whole monitoring contents of transformer station direct current system, the a plurality of measuring instruments that replaced prior art with a little equipment, improved integrated level, reduced equipment cost, reduce the fault point, increased system's reliability service time, and can preserve operating all data of storage battery back-up system, can further analyse in depth these data by PC analysis expert software, the critical condition that understanding may occur, play the effect of safe early warning, avoid the appearance of some safety problems, avoid because the large area blackout that dc system fault causes.
Description of drawings
Fig. 1 is the annexation figure of transformer station direct current system digital full functional status monitoring of the present invention and security evaluation device.
Fig. 2 is the structural representation of transformer station direct current system digital full functional status monitoring of the present invention and security evaluation device.
Among the figure: 1, shell, 2, geocoding, 3, the RS485 PORT COM, 4, usb connecting port, 5, voltage measurement module, 6, current measurement module.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Transformer station direct current system digital full functional status monitoring as depicted in figs. 1 and 2 and security evaluation device, mainly comprise shell 1, be arranged on the shell 1 lip-deep unit of display, be located at central processing unit, FLASH data storage, geocoding 2 and power module in the shell 1, the unit of display, FLASH data storage and geocoding 2 are connected with central processing unit respectively, and power module provides power supply for device; In described shell, also be provided with current measurement module 6, voltage measurement module 5 and A/D converter, current measurement module 6, voltage measurement module 5 are transferred to central processing unit respectively with the analog signal that measures after the A/D converter conversion, after central processing unit is handled voltage scurried in cell voltage, charging and discharging currents, voltage ripple, current ripples, the loop of the batteries of transformer station direct current system, discharged and recharged power, related datas such as charge-discharge energy, the internal resistance of cell, voltage voltage stabilizing rate, conversion efficiency are presented on the unit of display.
Simulation part has two independent AD converter and to scurry into analog signal such as voltage with voltage, electric current, voltage ripple, current ripples to be converted into digital signal and to pass to central processing unit.
Central processing unit is with the chip of ARM chip as embedded system, periphery in embedded system, real-time clock is RX8025, F LASH data storage area, and the data of preserving character library and sampling are that AT45DB161, usb host mode controller are that CH376,485 serial communications are Max485.
Wherein, also be provided with on described shell and be used for RS485 PORT COM 3 that this device is connected with host computer, the communication signal of central processing unit output is connected to the RS485 bus by optical coupling isolation circuit.On described shell, also be provided with usb connecting port 4.The described unit of display comprises a LCD display floater, two charactron and three LED light that are used to indicate three kinds of operating states that are used for the display alarm numbering.LCD is used for showing the data of sampling, the setting of real-time curve and each Control Parameter.
The software of equipment uses the Embedded Operating System of multitask, judge the battery-operated state according to each parameter, whether each operational factor is in alarm condition, an enterprising step of these data bases is analyzed the data trend in one period again, utilizes fuzzy algorithmic approach to judge whether batteries has been in the thermal runaway state.
Compared with prior art, the present invention is provided with current measurement module, voltage measurement module and A/D converter, current measurement module, voltage measurement module are transferred to central processing unit respectively with the analog signal that measures after the A/D converter conversion, after central processing unit is handled voltage scurried in cell voltage, charging and discharging currents, voltage ripple, current ripples, the loop of the batteries of transformer station direct current system, discharged and recharged power, related datas such as charge-discharge energy, the internal resistance of cell, voltage voltage stabilizing rate, conversion efficiency are presented on the unit of display.This covering device has comprised whole monitoring contents of transformer station direct current system, the a plurality of measuring instruments that replaced prior art with a little equipment, improved integrated level, reduced equipment cost, reduce the fault point, increased system's reliability service time, and can preserve operating all data of storage battery back-up system, can further analyse in depth these data by PC analysis expert software, the critical condition that understanding may occur, play the effect of safe early warning, avoid the appearance of some safety problems, avoid because the large area blackout that dc system fault causes.
More than show and described basic principle of the present invention and principal character and advantage thereof.The technology personage of the industry should understand; the present invention is not subjected to the restriction of above-mentioned implementing regulations; that describes in above-mentioned implementing regulations and the specification just is used to illustrate principle of the present invention; under the prerequisite that does not break away from the principle of the invention and scope; the present invention also can have various changes and modifications, and these changes and improvements all belong in the claimed scope of the invention.
The claimed scope of the present invention defines with appending claims and other equivalent.
Claims (4)
1. transformer station direct current system digital full functional status monitoring and security evaluation device, mainly comprise shell, be arranged on the unit of display on the case surface, be located at central processing unit, FLASH data storage, geocoding and power module in the shell, the unit of display, FLASH data storage and geocoding are connected with central processing unit respectively, and power module provides power supply for device; It is characterized in that: in described shell, also be provided with current measurement module, voltage measurement module and A/D converter, current measurement module, voltage measurement module are transferred to central processing unit respectively with the analog signal that measures after the A/D converter conversion, after central processing unit is handled voltage scurried in cell voltage, charging and discharging currents, voltage ripple, current ripples, the loop of the batteries of transformer station direct current system, discharged and recharged power, related datas such as charge-discharge energy, the internal resistance of cell, voltage voltage stabilizing rate, conversion efficiency are presented on the unit of display.
2. transformer station direct current system digital full functional status monitoring according to claim 1 and security evaluation device, it is characterized in that: also be provided with on described shell and be used for RS485 PORT COM that this device is connected with host computer, the communication signal of central processing unit output is connected to the RS485 bus by optical coupling isolation circuit.
3. transformer station direct current system digital full functional status monitoring according to claim 1 and 2 and security evaluation device is characterized in that: also be provided with usb connecting port on described shell.
4. transformer station direct current system digital full functional status monitoring according to claim 1 and security evaluation device is characterized in that: the described unit of display comprises a LCD display floater, two charactron and three LED light that are used to indicate three kinds of operating states that are used for the display alarm numbering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105195811A CN101944779A (en) | 2010-10-26 | 2010-10-26 | Digitalized full-function state monitoring and safety evaluation device of substation direct current system |
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| CN2010105195811A CN101944779A (en) | 2010-10-26 | 2010-10-26 | Digitalized full-function state monitoring and safety evaluation device of substation direct current system |
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| CN101944779A true CN101944779A (en) | 2011-01-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308866A (en) * | 2013-06-04 | 2013-09-18 | 安徽省电力公司阜阳供电公司 | Direct current insulation on-line monitoring device of transformer substation |
| CN103473717A (en) * | 2013-09-24 | 2013-12-25 | 国家电网公司 | Judgment method for breaker operation mechanism energy storage state |
| CN106990306A (en) * | 2017-04-14 | 2017-07-28 | 国家电网公司 | A kind of transforming plant DC circuit test device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117093Y (en) * | 2007-11-14 | 2008-09-17 | 云南电网公司楚雄供电局 | Converting station accumulator remote monitoring device |
| CN201828651U (en) * | 2010-10-26 | 2011-05-11 | 上海天晶电力科技发展有限公司 | Digital full function state monitoring and safety evaluation device of transformer substation direct current system |
-
2010
- 2010-10-26 CN CN2010105195811A patent/CN101944779A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117093Y (en) * | 2007-11-14 | 2008-09-17 | 云南电网公司楚雄供电局 | Converting station accumulator remote monitoring device |
| CN201828651U (en) * | 2010-10-26 | 2011-05-11 | 上海天晶电力科技发展有限公司 | Digital full function state monitoring and safety evaluation device of transformer substation direct current system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308866A (en) * | 2013-06-04 | 2013-09-18 | 安徽省电力公司阜阳供电公司 | Direct current insulation on-line monitoring device of transformer substation |
| CN103473717A (en) * | 2013-09-24 | 2013-12-25 | 国家电网公司 | Judgment method for breaker operation mechanism energy storage state |
| CN106990306A (en) * | 2017-04-14 | 2017-07-28 | 国家电网公司 | A kind of transforming plant DC circuit test device |
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Application publication date: 20110112 |