CN203119559U - Distributed direct-current power source monitoring device - Google Patents

Distributed direct-current power source monitoring device Download PDF

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Publication number
CN203119559U
CN203119559U CN 201320120585 CN201320120585U CN203119559U CN 203119559 U CN203119559 U CN 203119559U CN 201320120585 CN201320120585 CN 201320120585 CN 201320120585 U CN201320120585 U CN 201320120585U CN 203119559 U CN203119559 U CN 203119559U
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module
monitoring
detection module
interface
power supply
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CN 201320120585
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孟祥军
何军田
巩方彬
刘敦秀
左安太
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Shandong luruan Digital Technology Co.,Ltd. smart energy branch
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Shandong Luneng Intelligence Technology 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
    • 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
    • Y04S10/40Display of information, e.g. of data or controls

Abstract

A distributed direct-current power monitoring device comprises a main controller, a liquid crystal display, a time synchronizing module, a power source management module, background monitoring equipment, a background monitoring communication interface, a main controller communication interface, a liquid crystal display interface, a time synchronizing interface, a system state collecting module, a direct-current insulation detection module, a storage battery detection module and a bus. The time synchronizing module, the direct-current insulation detection module and the storage battery detection module are selective, and the main controller, the power source management module, the system state collection module, the direct-current insulation detection module and the storage battery detection module are respectively connected with the bus. The distributed direct-current power monitoring device can be used for various application places, and modularized design is adopted, so that the device is powerful in function, high in instantaneity and convenient to manage; and an expert system is embedded, battery operating conditions are detected through data collected in a long time, health conditions and performance assessment of a storage battery are provided, and a maintenance suggestion scheme is provided.

Description

The distributed DC apparatus for monitoring power supply
Technical field
The utility model is specifically related to the distributed DC apparatus for monitoring power supply.
Background technology
Along with society constantly advances, power consumption is more and more higher, and is also more and more higher to the requirement of electric power system, and the reliability of system, stability, extensibility and the tightness that battery charging and discharging is managed are progressively to become the problem that electric power system is concerned about the most.The uninterrupted power supply that power plant, transformer station (institute) etc. install as control, signal, protection, emergency lighting, direct current oil pump, divide-shut brake etc. with accumulator direct current supply usually for distribution department; the whether reliable safe operation that directly has influence on power supply-distribution system of continuous-current plant, the function power then influences the optimum operation of system and the useful life of storage battery.At present; domestic electric power operation DC power supply supervisory control system mainly adopts DC power system to place the centralized monitor mode of master-control room; development along with the intelligent substation construction; the layered distribution type framework will become main flow; the global design of intelligent station system from now on mainly is to optimize area to use; equipment is installed on the spot; therefore; main transformer side protection observing and controlling; low-pressure side protection observing and controlling; intelligent terminal; when merge cells and the equidistant master-control room of GIS equipment are far away; DC power supply need increase the branch electric screen and use a large amount of cables to give power devices; will cause the cable distribution difficulty to increase like this; economy is relatively poor; the long meeting of distance simultaneously makes the signal attenuation sampling precision inaccurate; cause the facility switching misoperation; existing direct current unit monitors device generally only is applicable to lead-acid battery; the charging strategy is simple constant current constant voltage mode; be not suitable for the Charge Management of lithium battery etc.; mode is all filled in the timing that the maintenance work of battery is more single; also can't provide and safeguard suggestion; in a single day battery goes wrong and causes the DC power system paralysis easily; there is not battery balanced control, bigger to the battery life influence.Existing apparatus to the time mode single, the application scenario is restricted, insulation monitoring module adopts the injection aspect more, causes problem such as protection malfunction etc. easily.Original supervising device adopts the fieldbus mode to provide last stipulations more, can't satisfy the needs that intelligent substation is built.Charging module power supply input mode is single, does not have multiple power input interfaces such as solar energy, wind energy.Original DC power supply supervising device no longer satisfies application and development.
The utility model content
In order to solve the deficiencies in the prior art, the utility model specifically discloses a kind of distributed DC apparatus for monitoring power supply.
Concrete scheme of the present utility model is as follows:
A kind of distributed DC apparatus for monitoring power supply, comprise master controller, LCDs, to the time module, power management module, background monitoring equipment, background monitoring communication interface, master controller communication interface, LCDs interface, to the time interface, system mode acquisition module, D.C. isolation detection module, storage battery detection module, bus; Described master controller, power management module, system mode acquisition module, D.C. isolation detection module, storage battery detection module link to each other with bus respectively; Described to the time module with to the time interface link to each other, described to the time interface support communication modes be RS485 or ETH; Described liquid crystal display links to each other with the LCDs interface, and the communication modes of described LCDs interface support is RS485 or parallel interface; The communication interface of described master controller links to each other with bus, and the communication modes of the communication interface support of described master controller is RS485, CAN, ETH or power line carrier; Described background monitoring communication interface links to each other with master controller, and the communication modes of described background monitoring communication interface support is RS485, CAN, ETH or power line carrier.
Described power management module comprises power supply switching controls module, charging flow control module, battery balanced control module.
Described system mode acquisition module comprises analogue collection module, switch acquisition module, fault detection module.
Described D.C. isolation detection module comprises bus insulation monitoring modular, branch road insulating monitoring module, exchanges and sneak into monitoring modular.
Described storage battery detection module comprises battery tension detection module, batteries temperature detecting module, batteries internal resistance detection module.
The power management module of distributed DC apparatus for monitoring power supply can be selected passive equilibrium and initiatively balanced according to the uneven degree of battery.Distributed DC apparatus for monitoring power supply state acquisition module can be gathered the collection that exchanges input, direct current output, battery status, switching value, and master controller is in time judged working state of system and made control according to Information Monitoring.
Distributed DC apparatus for monitoring power supply insulating monitoring module can exchange dc bus and feeder line and sneak into detection, device can detect and exchange and dc bus direct short-circuit, interchange is sneaked into dc bus through capacitive coupling, various faults situations such as dc bus are sneaked in interchange through resistance, can select and sneak into line number, to the power frequency supply isolated neutral system, can between its zero line and the earth, connect an electric capacity when needing, can realize that also power frequency sneaks into the function that dc bus detects.During normal operation, device can be checked the relative value of alternating current of 16 circuits of dc bus power frequency ac voltage and alternating current maximum.The detection method that distributed DC apparatus for monitoring power supply insulating monitoring module adopts balance bridge and uneven bridge to combine, to busbar voltage, the one pole voltage to earth, bus insulation against ground resistance detects.
The beneficial effects of the utility model are:
(1), the distributed DC Power Supply Monitoring is to last support ETH, CAN, multiple communication modes such as 485, be applicable to multiple occasion, to last support 61850 stipulations, can directly insert intelligent substation, when having 1588 pairs, the B sign indicating number to the time, the NTP network to the time etc. multiple to the time mode, applied widely.
(2), to have charging modes such as constant current constant voltage, multistage constant current, permanent power available, is applicable to multiple battery such as lead acid accumulator, ferric phosphate lithium cell.Have the battery expert system, some managerial knowledge of expert engineer are applied in the battery cell monitoring management, provide storage battery health status, Performance Evaluation according to the long-time running monitoring result, maintenance, maintenance proposed projects are provided.Have battery balanced control function, prevent the cell overvoltage, cross low situation and take place, carry out equilibrium and control, effectively increase battery useful life.Monitor information such as battery temperature, SOC in real time, the generation that prevents excess temperature, overcharges, crosses phenomenons such as putting.
(3), insulation monitoring module adopts the leakage current detection method not need signal is injected in system, the stability of raising system operation, the mode that adopts balance bridge and uneven bridge to combine can detect the bus insulation situation, exchanges the situation of sneaking into.Sneak into the route selection function by being grounded route selection with the cooperation of leakage current sensor with exchanging.
(4), many power supplys insert, and adopt power supplys such as solar energy, wind energy to insert, and give full play to the advantage of variety classes power supply, improve the various energy resources level of comprehensive utilization, and can keep away the peak electricity consumption by obtaining electric network peak Pinggu running status with the backstage communication, realize energy-saving and cost-reducing.Adopt modularized design, function opposite independent is convenient to trouble shoot, module replacing.
(5), adopt the distributed DC apparatus for monitoring power supply, save a large amount of cables, wiring is simple, even exist single-point grounding also to be not easy to cause the protection malfunction.System is stable.The design of employing high-protection level is applicable to outdoor application.
Description of drawings
Fig. 1 distributed DC apparatus for monitoring power supply overall structure figure;
Fig. 2 distributed DC apparatus for monitoring power supply state acquisition module workflow diagram;
Fig. 3 distributed DC apparatus for monitoring power supply insulating monitoring module exchanges sneaks into testing circuit figure;
Fig. 4 distributed DC apparatus for monitoring power supply insulating monitoring module busbar and branch road insulation testing circuit figure;
1 master controller among Fig. 1,2 LCDs, module in the time of 3 pairs, 4 system mode acquisition modules, 5 D.C. isolation detection modules, 6 storage battery detection modules, 7 LCDs interfaces, 8 power management modules, interface in the time of 9 pairs, 10 master controller communication interfaces, 11 background monitoring equipment, 12 background monitoring device communication interface, 13 buses, 81 power supply switching controls modules, 82 charging flow control modules, 83 battery balanced control modules, 41 analogue collection modules, 42 switch acquisition modules, 43 fault detection module, 51 bus insulation monitoring modulars, 52 branch road insulating monitoring modules, monitoring modular is sneaked in 53 interchanges, 61 battery voltage detection modules, 62 batteries temperature detecting module, 63 batteries internal resistance detection modules.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated:
As shown in Figure 1, a kind of distributed DC apparatus for monitoring power supply, comprise master controller 1, LCDs 2, to the time module 3, power management module 8, background monitoring equipment 11, background monitoring device communication interface 12, master controller communication interface 10, LCDs interface 7, to the time interface 9, system mode acquisition module 4, D.C. isolation detection module 5, storage battery detection module 6, bus 13;
To the time module 3 with to the time interface 9 link to each other, to the time interface 9 communication modes RS485 or the ETH that support; LCDs 2 links to each other with LCDs interface 7, communication modes RS485 or parallel interface that LCDs interface 7 is supported; The communication interface 10 of master controller links to each other with background monitoring equipment 11, and the communication interface 10 of described master controller is RS485, CAN, ETH or power line carrier with the communication modes that background monitoring device communication interface 12 is supported.Power management module 8 comprises power supply switching controls module 81, charging flow control module 82, battery balanced control module 83; System mode acquisition module 4 comprises analogue collection module 41, switch acquisition module 42, fault detection module 43; D.C. isolation detection module 5 comprises bus insulation monitoring modular 51, branch road insulating monitoring module 52, exchanges and sneak into monitoring modular 53; Storage battery detection module 6 comprises battery voltage detection module 61, batteries temperature detecting module 62, batteries internal resistance detection module 63; Master controller 1, power management module 8, system mode acquisition module 4, D.C. isolation detection module 5, storage battery detection module 6 link to each other with bus 13 respectively, are used for the communication of data, and master controller 1 receives and deal with data by master controller communication interface 10.
Distributed DC apparatus for monitoring power supply master monitoring is also supported plurality of optional carrier systems such as CAN, Ethernet, power line carrier in addition to last support IEC61850 stipulations.Distributed DC apparatus for monitoring power supply master monitors when supporting 1588 pairs, the B sign indicating number to the time, the NTP network to the time etc. multiple to the time mode, be used in various application occasions.
The embedded expert system of distributed DC apparatus for monitoring power supply, by human-computer interaction interface, provide relevant informations such as battery parameter etc. is relevant, by the Data Detection battery operation situation of long-term collection, storage battery health status, Performance Evaluation are provided, maintenance, maintenance proposed projects are provided.
Distributed DC apparatus for monitoring power supply and electric power system interface obtain electric network peak Pinggu operation information, are guaranteeing to realize that rationally adjustment is charged the period under the stable situation of direct current system.The power management module of distributed DC current monitoring device can use different charging modes according to different qualities such as lead-acid battery, lithium batteries, can make this supervising device can be applied to multiple battery power supply occasion like this.The power management module of distributed DC apparatus for monitoring power supply is guaranteeing to use clean energy resource as much as possible under the stable situation of electric power system, adopts the maximum power judgment mode to determine to use which kind of power supply as current use power supply.Adopt 1 main 1 to be equipped with working method in the course of work, maximum possible guarantees the reliability of input power supply.The power management module of distributed DC apparatus for monitoring power supply can be selected passive equilibrium and initiatively balanced according to the uneven degree of battery.
Distributed DC apparatus for monitoring power supply state acquisition module workflow as shown in Figure 2, can gather the collection that exchanges input, direct current output, battery status, switching value, the data that collect are transported to CPU through signal condition, AD conversion, light-coupled isolation after handling, and master controller is in time judged working state of system and made control according to Information Monitoring.
Distributed DC apparatus for monitoring power supply insulating monitoring module exchanges and sneaks into testing circuit figure as shown in Figure 3, can exchange dc bus and feeder line and sneak into detection, device can detect and exchange and dc bus direct short-circuit, interchange is sneaked into dc bus through capacitive coupling, various faults situations such as dc bus are sneaked in interchange through resistance, can select and sneak into line number.To the power frequency supply isolated neutral system, can between its zero line and the earth, connect an electric capacity when needing, can realize that also power frequency sneaks into the function that dc bus detects, when normally moving, device can be checked the relative value of alternating current of 16 circuits of dc bus power frequency ac voltage and alternating current maximum.
Distributed DC apparatus for monitoring power supply insulating monitoring module busbar and branch road insulate testing circuit figure as shown in Figure 4, the detection method that adopts balance bridge and uneven bridge to combine, and to busbar voltage, the one pole voltage to earth, bus insulation against ground resistance detects.The branch road insulation resistance detects and adopts the DC leakage current detection method, does not need signal is injected in system, improves system's operation stability.

Claims (5)

1. distributed DC apparatus for monitoring power supply, it is characterized in that, comprise master controller, LCDs, to the time module, power management module, background monitoring equipment, background monitoring communication interface, master controller communication interface, LCDs interface, to the time interface, system mode acquisition module, D.C. isolation detection module, storage battery detection module, bus; Described master controller, power management module, system mode acquisition module, D.C. isolation detection module, storage battery detection module link to each other with bus respectively; Described to the time module with to the time interface link to each other, described to the time interface support communication modes be RS485 or ETH; Described liquid crystal display links to each other with the LCDs interface, and the communication modes of described LCDs interface support is RS485 or parallel interface; The communication interface of described master controller links to each other with bus, and the communication modes of the communication interface support of described master controller is RS485, CAN, ETH or power line carrier; Described background monitoring communication interface links to each other with master controller, and the communication modes of described background monitoring communication interface support is RS485, CAN, ETH or power line carrier.
2. a kind of distributed DC apparatus for monitoring power supply as claimed in claim 1 is characterized in that, described power management module comprises power supply switching controls module, charging flow control module, battery balanced control module.
3. a kind of distributed DC apparatus for monitoring power supply as claimed in claim 1 is characterized in that, described system mode acquisition module comprises analogue collection module, switch acquisition module, fault detection module.
4. a kind of distributed DC apparatus for monitoring power supply as claimed in claim 1 is characterized in that, described D.C. isolation detection module comprises bus insulation monitoring modular, branch road insulating monitoring module, exchanges and sneak into monitoring modular.
5. a kind of distributed DC apparatus for monitoring power supply as claimed in claim 1 is characterized in that, described storage battery detection module comprises battery tension detection module, batteries temperature detecting module, batteries internal resistance detection module.
CN 201320120585 2013-03-15 2013-03-15 Distributed direct-current power source monitoring device Active CN203119559U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167813A (en) * 2014-09-11 2014-11-26 国家电网公司 Direct current power source system of transformer substation
CN104485747A (en) * 2015-01-07 2015-04-01 山东鲁能智能技术有限公司 System and method for distributed power source of transformer substation
CN104578406A (en) * 2014-12-12 2015-04-29 新乡市中大电气有限公司 Monitoring system of direct current power supply touch screen
WO2015169159A1 (en) * 2014-05-05 2015-11-12 周公博 Master monitoring system for charging of super capacitor
CN105634039A (en) * 2014-10-30 2016-06-01 国家电网公司 Novel DC power monitoring device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016528867A (en) * 2014-05-05 2016-09-15 チャイナ ユニバーシティ オブ マイニング アンド テクノロジーChina University Of Mining And Technology Master monitoring system for supercapacitor charging
US9774202B2 (en) 2014-05-05 2017-09-26 China University Of Mining And Technology Master monitoring system for charging of super capacitor
WO2015169159A1 (en) * 2014-05-05 2015-11-12 周公博 Master monitoring system for charging of super capacitor
CN104167813A (en) * 2014-09-11 2014-11-26 国家电网公司 Direct current power source system of transformer substation
CN105634039A (en) * 2014-10-30 2016-06-01 国家电网公司 Novel DC power monitoring device
CN104578406A (en) * 2014-12-12 2015-04-29 新乡市中大电气有限公司 Monitoring system of direct current power supply touch screen
CN104485747B (en) * 2015-01-07 2016-06-15 山东鲁能智能技术有限公司 A kind of transforming plant distributed power-supply system and method
CN104485747A (en) * 2015-01-07 2015-04-01 山东鲁能智能技术有限公司 System and method for distributed power source of transformer substation

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C14 Grant of patent or utility model
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CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 250101 Electric Power Intelligent Robot Production Project 101 in Jinan City, Shandong Province, South of Feiyue Avenue and East of No. 26 Road (ICT Industrial Park)

Patentee after: National Network Intelligent Technology Co., Ltd.

Address before: 250101 Qilu Software Park building, Ji'nan hi tech Zone, Shandong, B-205

Patentee before: Shandong Luneng Intelligent Technology Co., Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20201210

Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province

Patentee after: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch

Address before: 250101 power intelligent robot production project 101 south of Feiyue Avenue and east of No.26 Road (in ICT Industrial Park) in Suncun District of Gaoxin, Jinan City, Shandong Province

Patentee before: National Network Intelligent Technology Co.,Ltd.

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province

Patentee after: Shandong luruan Digital Technology Co.,Ltd. smart energy branch

Address before: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province

Patentee before: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch