CN107402360A - Multichannel fault wave recording device and its application process for DC power system - Google Patents

Multichannel fault wave recording device and its application process for DC power system Download PDF

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Publication number
CN107402360A
CN107402360A CN201710757653.8A CN201710757653A CN107402360A CN 107402360 A CN107402360 A CN 107402360A CN 201710757653 A CN201710757653 A CN 201710757653A CN 107402360 A CN107402360 A CN 107402360A
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China
Prior art keywords
power system
voltage
module
power
unit
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Pending
Application number
CN201710757653.8A
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Chinese (zh)
Inventor
敖非
刘海峰
潘冠兴
黄纯
陈仕娟
代文良
曹慧
陈林
张立志
郑显贵
谷湘文
徐浩
唐鹏
李辉
许立强
梁文武
朱维钧
欧阳帆
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Hunan Xiangdian Test Research Institute Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Hunan Xiangdian Test Research Institute Co Ltd
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Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd, State Grid Hunan Electric Power Co Ltd, Hunan Xiangdian Test Research Institute Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201710757653.8A priority Critical patent/CN107402360A/en
Publication of CN107402360A publication Critical patent/CN107402360A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40Testing power supplies

Abstract

The invention discloses a kind of multichannel fault wave recording device and its application process for DC power system, multichannel fault wave recording device includes device body, charging screen and battery information acquisition module and Man Machine Interface unit, device body includes control module, signal acquisition circuit, communication interface unit, power module and direct-current power output module, power input terminal, charging screen DC bus-bar voltage input terminal and gps clock input terminal, application process includes carrying out selective recording based on multichannel fault wave recording device and default out-of-limit critical value.The present invention can realize to be gathered in real time to charging device, bus and batteries in transformer station, accurately and timely to power module, battery, DC loop abnormal conditions make analyze and start recording record and storage fault data information, and according to analysis result send alarm or warning.

Description

Multichannel fault wave recording device and its application process for DC power system
Technical field
The present invention relates to the operation maintenance of the DC power system of transformer station and diagnostic analysis technology, and in particular to a kind of Multichannel fault wave recording device and its application process for DC power system.
Background technology
The DC power system of transformer station is the important component of power system, is signalling arrangement, the relay of transformer station Protection, automatics, emergency lighting and circuit breaker part, closing operation provide dc source, and in the situation of outside AC fault Under, ensure to be continued to provide the visual plant of dc source by back-up source, be the equipment such as relay protection, automatics and breaker The basic guarantee of regular event, its stable operation are badly damaged most important to preventing system destruction, fault spread and equipment.
In recent years because transformer station direct current system occurs causing protection device malfunction in the case of exception in power system Be presented ascendant trend with the accident of tripping, and the abnormal conditions of straight-flow system in the state of accident can not capture it is accurate and detailed Thin information, lack the data supporting of crash analysis, many uncertain factors are added to analysis on accident cause.Due to shortage pair The more accurate and detailed monitoring of transforming plant DC power-supply system operation conditions, to DC power system under static and dynamical state Information can not be grasped completely, especially in dynamic state, such as AC power dead electricity, switch module failure, DC system grounding, friendship Stream power supply seal in, accumulator capacity decline, DC load mutation, Insulation Inspection Device for Direct-Current System route selection action etc. to direct current system The disturbance situation of system is known little about it.Accurately and completely to monitor the running situation of DC power system, direct current is found The problem of source system is present or defect, there is an urgent need to establish DC power system fault information acquisition diagnostic analysis and recording system System, increase and is improved to the monitoring means of straight-flow system, and for straight-flow system is all kinds of abnormal and each equipment between simultaneously or sequentially Accident analysis when occurring abnormal is modeled, and is reached accurate, comprehensive and is rapidly made analyzing and diagnosing.
The content of the invention
The technical problem to be solved in the present invention:For the above mentioned problem of prior art, there is provided one kind is used for dc source system The multichannel fault wave recording device and its application process of system, the present invention can be realized to charging device, bus and storage in transformer station Battery pack is gathered in real time, accurately and timely can make analysis simultaneously to the abnormal conditions of power module, battery, DC loop Start recording record and storage fault data information, and alarm or warning are sent according to analysis result, realize DC power system In real time or history normally show, inquired about and parameter setting with failure exception status amount, is the strategy and failure of day-to-day operation maintenance Anomaly analysis under state provides data supporting.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is:
A kind of multichannel fault wave recording device for DC power system, including device body, charging screen and battery information Acquisition module and Man Machine Interface unit, described device body include control module, signal acquisition circuit, communication interface list Member, power module and direct-current power output module, power input terminal, charging screen DC bus-bar voltage input terminal and GPS Clock input terminal, the control module are connected with signal acquisition circuit, communication interface unit, gps clock input terminal respectively, The power module is defeated with power input terminal, control module, signal acquisition circuit, communication interface unit, dc source respectively Go out module to be connected, the charging screen and battery information acquisition module, charging screen DC bus-bar voltage input terminal respectively with letter Number Acquisition Circuit is connected, the communication interface unit respectively with Man Machine Interface unit and detected DC power system D.C. isolation device, direct current (DC) monitoring device and background monitoring device are connected.
Preferably, the charging screen and battery information acquisition module include alternating voltage transducing unit, direct current buckling Send unit, Hall current sensing unit, temperature sensing unit and single battery voltage polling unit, the alternating voltage pick-up Unit, DC voltage transducing unit, Hall current sensing unit, temperature sensing unit, single battery voltage polling unit point Be not connected with signal acquisition circuit, the alternating voltage transducing unit, DC voltage transducing unit, Hall current sensing unit, The power input of temperature sensing unit is connected with the output end of direct-current power output module respectively, the alternating voltage pick-up list Member includes two groups of Alternative Voltage Converters, two groups of Alternative Voltage Converters direct current with detected DC power system respectively Charging screen two-way alternating current inlet wire power supply is connected, and the DC voltage transducing unit includes three groups of DC voltage transmitters, and described three Organize DC voltage transmitter the DC charging screen busbar voltage connection terminal with detected DC power system, charging voltage respectively Connection terminal, battery tension major loop are connected, and the Hall current sensing unit includes three groups of Hall current sensors, described The DC charging screen bus current connection terminal with detected DC power system, charging are electric respectively for three groups of Hall current sensors Stream connection terminal, battery main circuit current connection terminal are connected, and the temperature sensing unit includes temperature more than two and passed Sensor, one group of temperature sensor is arranged at the DC charging screen of detected DC power system, another group of temperature sensor cloth It is placed in the battery room of detected DC power system, the single battery voltage polling unit, which is arranged on, is detected direct current In the batteries of power-supply system, the single battery voltage polling unit is connected to each of batteries by signal cable To gather each battery cell voltage in batteries on individual pile crown.
Preferably, the output of the power input terminal and the UPS uninterrupted power sources of transformer station where DC power system End is connected.
Preferably, the gps clock input terminal and the output of the GPS timing devices of transformer station where DC power system End is connected.
Preferably, the communication interface unit includes CAN communication module, WAN communication modules, RS485 communication modules, ether At least one of net communication module communication module, the control module pass through WAN communication modules and detected dc source system The background monitoring device of system is connected, and the control module communicates mould by CAN communication module, WAN communication modules, RS485 respectively The direct current of a kind of communication module and corresponding communication cable and detected DC power system in block, ethernet communication module Seal, direct current (DC) monitoring device and background monitoring device are connected.
Preferably, at least one be connected with the Man Machine Interface unit in keyboard, mouse, display, printer Kind human-computer interaction device.
Further, the present invention also provides a kind of answering for multichannel fault wave recording device for being previously used for DC power system With method, implementation steps include:
1)The out-of-limit critical value of each echo signal is set beforehand through Man Machine Interface unit, and the echo signal includes straight Current charge screen DC bus-bar voltage, two-way alternating current inlet wire power supply, DC bus-bar voltage, charging voltage, battery tension, battery Electric current, charging screen temperature, batteries temperature and single battery voltage;
2)Control module is obtained to tested by signal acquisition circuit and charging screen and the collection of battery information acquisition module The echo signal of DC power system;
3)Each echo signal and corresponding default out-of-limit critical value are compared by control module, if arbitrary target signal surpasses Corresponding default out-of-limit critical value is crossed, then signal acquisition circuit and charging screen and battery information will be passed through by control module The echo signal that acquisition module collects carries out data record storage, and sends alarm signal to detected DC power system Background monitoring device.
The multichannel fault wave recording device tool that the present invention is used for DC power system has the advantage that:The present invention includes device Body, charging screen and battery information acquisition module and Man Machine Interface unit, described device body include control module, Signal acquisition circuit, communication interface unit, power module and direct-current power output module, power input terminal, charging screen direct current Busbar voltage input terminal and gps clock input terminal, it can realize to charging device, bus and batteries in transformer station Gathered in real time, accurately and timely the abnormal conditions of power module, battery, DC loop can be made and analyze and start record Ripple record and storage fault data information, and according to analysis result send alarm or warning, realize DC power system in real time or History normally show, inquire about and parameter setting with failure exception status amount, be day-to-day operation maintenance tactful and malfunction under Anomaly analysis provide data supporting.
The application process that the present invention is used for the multichannel fault wave recording device of DC power system is to be used for based on the present invention The application of the multichannel fault wave recording device of DC power system, by pre-set each echo signal out-of-limit critical value, Control module is obtained to being tested direct current by signal acquisition circuit and charging screen and the collection of battery information acquisition module Each echo signal and corresponding default out-of-limit critical value are compared by the echo signal of source system, and control module, such as Fruit arbitrary target signal exceed it is corresponding preset out-of-limit critical value, then by signal acquisition circuit and will be filled by control module The echo signal that electric screen and battery information acquisition module collect carries out data record storage, and sends alarm signal to quilt The background monitoring device of DC power system is detected, record, storage and the alarm of abnormal data can be realized, be transforming plant DC Anomaly analysis under strategy and malfunction that power-supply system day-to-day operation is safeguarded provides data supporting.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram of the embodiment of the present invention.
Marginal data:1st, device body;11st, control module;12nd, signal acquisition circuit;13rd, communication interface unit;14th, it is electric Source module;15th, direct-current power output module;16th, power input terminal;17th, charging screen DC bus-bar voltage input terminal;18、 Gps clock input terminal;2nd, charging screen and battery information acquisition module;21st, alternating voltage transducing unit;22nd, DC voltage Transducing unit;23rd, Hall current sensing unit;24th, temperature sensing unit;25th, single battery voltage polling unit;3rd, it is man-machine Interaction interface unit.
Embodiment
As shown in figure 1, the present embodiment be used for DC power system multichannel fault wave recording device include device body 1, Charging screen and battery information acquisition module 2 and Man Machine Interface unit 3, device body 1 include control module 11, signal Acquisition Circuit 12, communication interface unit 13, power module 14 and direct-current power output module 15, power input terminal 16, charging Shield DC bus-bar voltage input terminal 17 and gps clock input terminal 18, control module 11 respectively with signal acquisition circuit 12, Communication interface unit 13, gps clock input terminal 18 be connected, power module 14 respectively with power input terminal 16, control module 11st, signal acquisition circuit 12, communication interface unit 13, direct-current power output module 15 are connected, and charging screen and battery information are adopted Collection module 2, charging screen DC bus-bar voltage input terminal 17 are connected with signal acquisition circuit 12 respectively, and communication interface unit 13 divides Not with the D.C. isolation device of Man Machine Interface unit 3 and detected DC power system, direct current (DC) monitoring device and after Platform supervising device is connected.
In the present embodiment, communication interface unit 13 include CAN communication module, WAN communication modules, RS485 communication modules, with Too at least one of net communication module communication module, control module 11 pass through WAN communication modules and detected dc source system The background monitoring device of system is connected, control module 11 respectively by CAN communication module, WAN communication modules, RS485 communication modules, The direct current of a kind of communication module and corresponding communication cable and detected DC power system in ethernet communication module is exhausted Edge device, direct current (DC) monitoring device and background monitoring device are connected.Specifically, control module 11 is led to by CAN in the present embodiment News module and corresponding communication cable are connected with D.C. isolation device, the direct current (DC) monitoring device of detected DC power system, And be connected by WAN communication modules and corresponding communication cable with the background monitoring device of detected DC power system, but It is the difference for the communication modes that different D.C. isolation devices, direct current (DC) monitoring device and background monitoring device may provide, because This can select corresponding communication module, such as RS485 communication modules, ethernet communication module etc. as needed.
In the present embodiment, power input terminal 16 passes through 2.5mm2Control cable and transformer station where DC power system The output end of UPS uninterrupted power sources is connected.
In the present embodiment, charging screen DC bus-bar voltage input terminal 17 controls cable secondary line direct by 2*2.5mm2 DC bus-bar voltage major loop in connection charging screen.
In the present embodiment, gps clock input terminal 18 passes through multicore(0.35~0.75mm²)Signal cable or 1.5mm2 controls Cable processed is connected with the output end of the GPS timing devices of transformer station where DC power system.
In the present embodiment, charging screen and battery information acquisition module 2 include alternating voltage transducing unit 21, DC voltage Transducing unit 22, Hall current sensing unit 23, temperature sensing unit 24 and single battery voltage polling unit 25, alternating current Press transducing unit 21, DC voltage transducing unit 22, Hall current sensing unit 23, temperature sensing unit 24, single battery Voltage polling unit 25 is connected with signal acquisition circuit 12 respectively, alternating voltage transducing unit 21, DC voltage transducing unit 22, The power input output end with direct-current power output module 15 respectively of Hall current sensing unit 23, temperature sensing unit 24 It is connected, alternating voltage transducing unit 21 includes two groups of Alternative Voltage Converters, and two groups of Alternative Voltage Converters are respectively with being detected The DC charging screen two-way alternating current inlet wire power supply of DC power system is connected, and DC voltage transducing unit 22 includes three groups of direct currents Pressure transmitter, three groups of DC voltage transmitters DC charging screen busbar voltage connection end with detected DC power system respectively Son, charging voltage connection terminal, battery tension major loop are connected, and Hall current sensing unit 23 includes three groups of Hall currents and passed Sensor, three groups of Hall current sensors respectively the DC charging screen bus current connection terminal with detected DC power system, Charging current connection terminal, battery main circuit current connection terminal are connected, and the temperature that temperature sensing unit 24 includes three groups passes Sensor, one group of temperature sensor is arranged at the DC charging screen of detected DC power system, another group of temperature sensor cloth It is placed in the battery room of detected DC power system(Remaining 1 group it is standby), single battery voltage polling unit 25 is arranged on It is detected in the batteries of DC power system, single battery voltage polling unit 25 is connected to electric power storage by signal cable To gather each battery cell voltage in batteries on each pile crown of pond group.In addition, control module 11 can also directly be read Take data message needed for the acquisition of single battery information of voltage in background monitoring device.In the present embodiment, control module 11 is distinguished Using more multicores(0.35~0.75mm²)Signal cable and 1.5mm2 control cable respectively with alternating voltage transducing unit 21st, DC voltage transducing unit 22, Hall current sensing unit 23, temperature sensing unit 24 and single battery voltage polling list Member 25 is connected;Alternating voltage transducing unit 21, DC voltage transducing unit 22, Hall current sensing unit 23, TEMP list Member 24 and single battery voltage polling unit 25 are provided which 4~20mA of DC DC current monitoring signals access signal acquisition Circuit 12.In addition, two groups of Alternative Voltage Converters control two, cable and detected DC power system with 4*2.5mm2 respectively DC charging screen two-way alternating current inlet wire power supply be connected, three groups of DC voltage transmitters respectively with 2*2.5mm2 control 3 groups of cable With DC charging screen busbar voltage connection terminal, charging voltage connection terminal, the battery tension of detected DC power system Major loop is connected.In the present embodiment, direct-current power output module 15 includes tri- groups of power output ends of DC-12V, DC-5V, DC-24V Son, alternating voltage transducing unit 21, DC voltage transducing unit 22, Hall current sensing unit 23, temperature sensing unit 24 can Connected with selection as needed any one or more groups of in tri- groups of power output terminals of DC-12V, DC-5V, DC-24V.
In the present embodiment, the man-machine interactions such as keyboard, mouse, display, printer are connected with Man Machine Interface unit 3 Equipment, in addition can also be directly or indirectly man-machine by keyboard, mouse, display, printer etc. using other interfaces as needed Interactive device is connected with control module 11.
In summary, the present embodiment is used for the multichannel fault wave recording device of DC power system and takes in transformer station UPS not Uninterruptible power is device working power, when taking station internal clock device clock pair, possesses man-machine interface(Keyboard, display, printing Machine);Possess device dead electricity and do not lose data function.Filled by straight-flow system direct-current supervision in CAN communication link reader station Put and the information of D.C. isolation device, DC charging, bus in transformer station are obtained also by the information acquisition module in the system And accumulator battery voltage, electric current, temperature information.Record storage electricity is decided whether by the critical value comparative analysis with each setting Pressure, electric current, temperature information.Whether described information acquisition can be opened by parameter setting or locking.Reserved RS485 communication interfaces or Ethernet interface, distinct interface is used depending on direct current (DC) monitoring device and D.C. isolation device communication interface difference.The present embodiment is used for The multichannel fault wave recording device of DC power system also provides 5V, 12V, 24V dc source and provides transmitter, working sensor Power supply.The multichannel fault wave recording device that the present embodiment is used for DC power system can be accurately and timely to power module, storage Battery, the abnormal conditions of DC loop, which are made, analyzes and starts recording record and storage fault data information, and is tied according to analysis Fruit sends alarm or warning, realizes that DC power system is real-time or history is normal and failure exception status amount shows, inquires about and joined Number is set, and the anomaly analysis under the strategy and malfunction safeguarded for day-to-day operation provides data supporting, is stood erectly to improving power transformation The operation management level of streaming system will play highly important impetus.
The implementation steps that the present embodiment is used for the application process of the multichannel fault wave recording device of DC power system include:
1)The out-of-limit critical value of each echo signal is set beforehand through Man Machine Interface unit 3, and echo signal includes direct current Charging screen DC bus-bar voltage, two-way alternating current inlet wire power supply, DC bus-bar voltage, charging voltage, battery tension, storage battery Stream, charging screen temperature, batteries temperature and single battery voltage;
2)Control module 11 is obtained to quilt by signal acquisition circuit 12 and charging screen and the collection of battery information acquisition module 2 Test the echo signal of DC power system;
3)Each echo signal and corresponding default out-of-limit critical value are compared by control module 11, if arbitrary target signal Out-of-limit critical value is preset more than corresponding, then signal acquisition circuit 12 and charging screen and electric power storage will be passed through by control module 11 The echo signal that pond information acquisition module 2 collects carries out data record storage, and sends alarm signal to detected direct current The background monitoring device of power-supply system.
The application process that the present invention is used for the multichannel fault wave recording device of DC power system is to be used for based on the present invention The application of the multichannel fault wave recording device of DC power system, by pre-set each echo signal out-of-limit critical value, Control module is obtained to being tested direct current by signal acquisition circuit and charging screen and the collection of battery information acquisition module Each echo signal and corresponding default out-of-limit critical value are compared by the echo signal of source system, and control module, such as Fruit arbitrary target signal exceed it is corresponding preset out-of-limit critical value, then by signal acquisition circuit and will be filled by control module The echo signal that electric screen and battery information acquisition module collect carries out data record storage, and sends alarm signal to quilt The background monitoring device of DC power system is detected, abnormal data can be realized(Refer to straight-flow system DC voltage, electric current and temperature Transfinite or unusual fluctuations, or situations such as exchange is mutually altered with DC voltage occur)Record, storage and alarm, while pass through communication Line, which is sent to background monitoring, the present invention, is used for the implementation of the application process of the multichannel fault wave recording device of DC power system, Data supporting can be provided for the anomaly analysis under the strategy and malfunction of the maintenance of transforming plant DC power-supply system day-to-day operation, The system energy diagnostic analysis and DC power system various information is recorded when transforming plant DC power-supply system occurs abnormal Ripple, record, for all kinds of abnormal informations of personnel's thorough search history.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (7)

  1. A kind of 1. multichannel fault wave recording device for DC power system, it is characterised in that:Including device body(1), fill Electric screen and battery information acquisition module(2)And Man Machine Interface unit(3), described device body(1)Including controlling mould Block(11), signal acquisition circuit(12), communication interface unit(13), power module(14)And direct-current power output module(15)、 Power input terminal(16), charging screen DC bus-bar voltage input terminal(17)And gps clock input terminal(18), the control Molding block(11)Respectively with signal acquisition circuit(12), communication interface unit(13), gps clock input terminal(18)It is connected, institute State power module(14)Respectively with power input terminal(16), control module(11), signal acquisition circuit(12), communication interface list Member(13), direct-current power output module(15)It is connected, the charging screen and battery information acquisition module(2), charging screen direct current Busbar voltage input terminal(17)Respectively with signal acquisition circuit(12)It is connected, the communication interface unit(13)Respectively with it is man-machine Interaction interface unit(3)And D.C. isolation device, direct current (DC) monitoring device and the background monitoring of detected DC power system Device is connected.
  2. 2. the multichannel fault wave recording device according to claim 1 for DC power system, it is characterised in that:It is described Charging screen and battery information acquisition module(2)Including alternating voltage transducing unit(21), DC voltage transducing unit(22), suddenly That current sensing unit(23), temperature sensing unit(24)With single battery voltage polling unit(25), the alternating voltage Transducing unit(21), DC voltage transducing unit(22), Hall current sensing unit(23), temperature sensing unit(24), electric power storage Pond monomer voltage polling unit(25)Respectively with signal acquisition circuit(12)It is connected, the alternating voltage transducing unit(21), it is straight Flow voltage transmission unit(22), Hall current sensing unit(23), temperature sensing unit(24)Power input respectively with directly Flow power supply output module(15)Output end be connected, the alternating voltage transducing unit(21)Including two groups of alternating voltage pick-ups Device, two groups of Alternative Voltage Converters DC charging screen two-way alternating current inlet wire power supply with detected DC power system respectively It is connected, the DC voltage transducing unit(22)Including three groups of DC voltage transmitters, three groups of DC voltages transmitter point Not with DC charging screen busbar voltage connection terminal, charging voltage connection terminal, the storage battery of detected DC power system Pressure major loop is connected, the Hall current sensing unit(23)Including three groups of Hall current sensors, three groups of Hall currents Sensor respectively the DC charging screen bus current connection terminal with detected DC power system, charging current connection terminal, Battery main circuit current connection terminal is connected, the temperature sensing unit(24)Including temperature sensor more than two, one Group temperature sensor be arranged at the DC charging screen of detected DC power system, another group of temperature sensor be arranged in it is tested Survey in the battery room of DC power system, the single battery voltage polling unit(25)Installed in detected dc source In the batteries of system, the single battery voltage polling unit(25)The each of batteries is connected to by signal cable To gather each battery cell voltage in batteries on individual pile crown.
  3. 3. the multichannel fault wave recording device according to claim 1 for DC power system, it is characterised in that:It is described Power input terminal(16)It is connected with the output end of the UPS uninterrupted power sources of transformer station where DC power system.
  4. 4. the multichannel fault wave recording device according to claim 1 for DC power system, it is characterised in that:It is described Gps clock input terminal(18)It is connected with the output end of the GPS timing devices of transformer station where DC power system.
  5. 5. the multichannel fault wave recording device according to claim 1 for DC power system, it is characterised in that:It is described Communication interface unit(13)Including in CAN communication module, WAN communication modules, RS485 communication modules, ethernet communication module At least one communication module, the control module(11)Supervised by the backstage of WAN communication modules and detected DC power system Control device is connected, the control module(11)Pass through CAN communication module, WAN communication modules, RS485 communication modules, ether respectively The D.C. isolation of a kind of communication module and corresponding communication cable and detected DC power system in net communication module fills Put, direct current (DC) monitoring device and background monitoring device are connected.
  6. 6. the multichannel fault wave recording device according to claim 1 for DC power system, it is characterised in that:It is described Man Machine Interface unit(3)On be connected with least one of keyboard, mouse, display, printer human-computer interaction device.
  7. 7. it is used for answering for the multichannel fault wave recording device of DC power system in a kind of claim 1~6 described in any one With method, it is characterised in that implementation steps include:
    1)Beforehand through Man Machine Interface unit(3)The out-of-limit critical value of each echo signal, the echo signal bag are set Include DC charging screen DC bus-bar voltage, two-way alternating current inlet wire power supply, DC bus-bar voltage, charging voltage, battery tension, storage Battery current, charging screen temperature, batteries temperature and single battery voltage;
    2)Control module(11)Pass through signal acquisition circuit(12)And charging screen and battery information acquisition module(2)Collection obtains Take the echo signal to being tested DC power system;
    3)Control module(11)Each echo signal and corresponding default out-of-limit critical value are compared, if arbitrary target is believed Number exceed it is corresponding preset out-of-limit critical value, then pass through control module(11)Signal acquisition circuit will be passed through(12)And charging screen And battery information acquisition module(2)The echo signal collected carries out data record storage, and sends alarm signal to quilt Detect the background monitoring device of DC power system.
CN201710757653.8A 2017-08-29 2017-08-29 Multichannel fault wave recording device and its application process for DC power system Pending CN107402360A (en)

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CN110907848A (en) * 2019-11-28 2020-03-24 国网河北省电力有限公司电力科学研究院 Intelligent wave recording and grading alarm device for DC power supply fault
CN110930669A (en) * 2019-11-22 2020-03-27 国网湖北省电力有限公司武汉供电公司 Monitoring and early warning system and method for tripping and closing loop of transformer substation

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CN205720611U (en) * 2016-06-22 2016-11-23 三河益生电子科技开发有限公司 A kind of touch-screen type AC/DC integrated power supply monitoring system

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CN110930669A (en) * 2019-11-22 2020-03-27 国网湖北省电力有限公司武汉供电公司 Monitoring and early warning system and method for tripping and closing loop of transformer substation
CN110930669B (en) * 2019-11-22 2021-04-09 国网湖北省电力有限公司武汉供电公司 Monitoring and early warning system and method for tripping and closing loop of transformer substation
CN110907848A (en) * 2019-11-28 2020-03-24 国网河北省电力有限公司电力科学研究院 Intelligent wave recording and grading alarm device for DC power supply fault
CN110907848B (en) * 2019-11-28 2021-11-12 国网河北省电力有限公司电力科学研究院 Intelligent wave recording and grading alarm device for DC power supply fault

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Application publication date: 20171128