CN105158661A - Insulation fault positioning monitoring device of direct-current power supply system - Google Patents
Insulation fault positioning monitoring device of direct-current power supply system Download PDFInfo
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- CN105158661A CN105158661A CN201510551358.8A CN201510551358A CN105158661A CN 105158661 A CN105158661 A CN 105158661A CN 201510551358 A CN201510551358 A CN 201510551358A CN 105158661 A CN105158661 A CN 105158661A
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Abstract
The invention, which belongs to the technical field of the power supply equipment, relates to an insulation fault positioning monitoring device of a direct-current power supply system. With the device, problems of low application safety factor and frequent occurrence of a misinformation phenomenon of the existing detection device of the direct-current power supply system can be solved. According to the device, a voltage collection circuit collects a voltage and transmits the voltage to a bridge circuit; the bridge circuit determines the collected voltage and transmits the voltage to a signal source power supply circuit; the signal source power supply circuit transmits the determined signal to a wireless sending module; the wireless sending module sends the signal to a signal receiver; a current sensor transmits a sensed signal to a signal receiver; the signal receiver transmits the received signal to a wireless receiving module; the wireless receiving module transmits the signal to a voice alarm module; the voice alarm module transmits the signal to a photoelectric alarm module; and the signal receiver transmits the received signal to the wireless receiving module, the voice alarm module, and the photoelectric alarm module. Therefore, whether alarming of direct-current grounding is carried out can be determined based on sound and optical signals.
Description
Technical field
The present invention relates to a kind of DC power system insulation fault location monitoring device, belong to power supply equipment technical field.
Background technology
DC power system provides working power for secondary devices such as power industry transformer station, relay protection, power automation, communications.Direct supply is an earth-free working power, positive and negative power supply connects electrical equipment any between the earth, is an isolated neutral system being different from interchange, because it earth-freely has good anti-interference, use and do not need to consider ground connection, between each circuit, need not voltage difference etc. be considered.Use direct supply to be all important as the equipment of working power, the equipment that can not have a power failure simultaneously.So the reliability of its work directly affects the safe operation of electrical network, particularly the insulation fault of DC power supply device is just larger on the impact of electrical network, because DC power system has that distribution is wide, loop is many, throws the features such as the complicated and power supply mode of line is various, during system generation earth fault, earth fault is difficult to determine, localization of fault is difficult to solve, the problems such as existing equipment use safety coefficient is low, and wrong report phenomenon is many.
Summary of the invention
The present invention is low in order to solve existing DC power system checkout equipment use safety coefficient, the problem that wrong report phenomenon is many, provides a kind of DC power system insulation fault location monitoring device.
The technical scheme of technical solution problem of the present invention is:
DC power system insulation fault location monitoring device, it is characterized in that, voltage collection circuit connects with bridge diagram; Bridge diagram connects with signal source power circuit; Signal source power circuit connects with wireless sending module; Current sensor connects with signal receiver; Signal receiver receives the signal that wireless sending module sends; Signal receiver connects with wireless receiving mould; Wireless receiving module connects with language alarm module; Language alarm module connects with photoelectric alarm module;
Voltage collection circuit gathers voltage transmission to bridge diagram; Bridge diagram judges that the voltage transmission gathering is to signal source power circuit; Signal source power circuit the Signal transmissions judged to wireless sending module; Wireless sending module sends to signal receiver signal; Current sensor the Signal transmissions sensed to signal receiver; Signal receiver the Signal transmissions received to wireless receiving module; Wireless receiving module Signal transmissions to language alarm module; Language alarm module Signal transmissions to photoelectric alarm module; Signal receiver again simultaneously the Signal transmissions received to wireless receiving module and language alarm module and photoelectric alarm module.
The invention has the beneficial effects as follows:
1, this device adopts wireless module communication that signal is come from and measures between sample circuit does not need wire to connect, not by the impact of wire (supply line) length when realizing measuring.
Whether 2, this device has the combination of language alarm and photoelectric alarm, achieve just can to understand DC earthing by sound and light signal and report to the police.
Accompanying drawing explanation
Fig. 1: the structural representation of DC power system insulation fault location monitoring device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figure 1, DC power system insulation fault location monitoring device, it comprises voltage collection circuit 1, bridge diagram 2, signal source power circuit 3, synchronous radio transmitting element 4, wireless signal processing unit 5, current sensor 6, synchronous Signal Receiver Unit 7, language alarm module 8 and photoelectric alarm module 9 and forms; It is that voltage collection circuit 1 connects with bridge diagram 2 that its circuit connects; Bridge diagram 2 connects with signal source power circuit 3; Signal source power circuit 3 connects with synchronous radio transmitting element 4; Wireless signal processing unit 5 connects with synchronous Signal Receiver Unit 7; Current sensor 6 connects with synchronous Signal Receiver Unit 7; Synchronous Signal Receiver Unit 7 connects with language alarm module 8; Language alarm module 8 connects 9 with photoelectric alarm module; Synchronous Signal Receiver Unit 7 connects with photoelectric alarm module 9.
Voltage collection circuit 1 gathers voltage transmission to bridge diagram 2; Bridge diagram 2 judges bus insulation information by gathering the voltage come, then signal transmission is to signal source power circuit 3; Signal source power circuit 3 receives the signal that bridge diagram 2 transmits, then signal transmission is to synchronous radio transmitting element 4; Synchronous radio transmitting element 4 sends to wireless signal processing unit 5 signal; Wireless signal processing unit 5 Signal transmissions to synchronous Signal Receiver Unit 7; The Signal transmissions that current sensor 6 senses is to synchronous Signal Receiver Unit 7; Synchronous Signal Receiver Unit 7 Signal transmissions to language alarm module 8; Synchronous Signal Receiver Unit 7 Signal transmissions to photoelectric alarm module 9; Language alarm module 8 Signal transmissions to photoelectric alarm module 9.
Voltage collection circuit 1 adopts resistor voltage divider network to form, mainly DC voltage transformer is by sending A/D to carry out voltage sample again after a voltage follower, the positive and negative voltage of direct collection bus, the totalizer be made up of operational amplifier judges bus total voltage, more all voltage signals are transferred to bridge diagram 2.
The uneven bridge bridge diagram that bridge diagram 2 is made up of pull-up resistor, the voltage signal that voltage collection circuit 1 gathers judges bus insulation state by uneven bridge bridge diagram 2.Bridge diagram 2 judge bus insulation information transmission to signal source power circuit 3.
The busbar grounding signal that signal source power circuit 3 sends according to bridge diagram 2, provides a low frequency signal, through operation amplifier, then this Signal transmissions to synchronous radio transmitting element 4.Signal source power circuit 3 comprises internal signal oscillator, signal shaping, signal amplifying part is divided, and is 12V by generation amplitude, and frequency is that the synchronous square wave low frequency signal of 1Hz delivers to synchronous radio transmitting element 4.Signal oscillator is completed by chip DT18741, and signal shaping amplification is completed by LM324.
Synchronous radio transmitting element 4 sends the signal provided by signal source power circuit 3 by wireless transmitter module.Synchronous radio transmitting element 4 is the wireless modules adopting SiliconLaboratoriesSI4432 chip manufacturing, and Si4432 chip is the EZRadioPRO series radio transmitting and receiving chip that SiliconLabs company releases integrated level, low-power consumption, multiband.
Wireless signal processing unit 5 receives the wireless signal that synchronous radio transmitting element 4 sends, and the Signal transmissions received to synchronous Signal Receiver Unit 7.Current sensor 6 mainly gathers the current signal of each branch road, and the Signal transmissions collected to synchronous Signal Receiver Unit 7, the MT10 sensor that current sensor 6 adopts Zhejiang Ke Chang Electronics Co., Ltd. to produce is 10mA DC leakage flow sensor.Synchronous Signal Receiver Unit 7 receives the wireless signal of synchronous radio transmitting element 4 transmission and the signal of current sensor 5 transmission simultaneously, control each data section of leading to, collection, distribution, achieve the functions such as the warning of external data, display, whether the wireless signal that synchronous radio transmitting element 4 sends and the signal that current sensor 5 sends offset to adopt sinusoidal signal phase place look ahead technology and data batchmove algorithmic technique to judge, if signal sends skew, represent that ground connection occurs branch road, effectively can improve the precision of judgement, greatly improve the accuracy of route selection.The MTS32 series processors adopting MC company of the U.S. to produce completes.Language alarm module 8 adopts SYN6288 to pass through asynchronous serial port (UART) communication modes, receives the text data to be synthesized that synchronous Signal Receiver Unit 7 sends, realizes the conversion of Text To Speech (or TTS voice).Photoelectric alarm module 9 is made up of dry contact, relay and pilot lamp, has been mainly used to warning, and its signal is sended over by synchronous Signal Receiver Unit 7, and occur that the signal of abnormal parameters carries out warning and exports, the actuating of relay, pilot lamp is bright.The relay exported of reporting to the police is two groups of dry contacts, selects DT1240 relay, and Shanghai radio eight factory produces, 24 Power supplies, and pilot lamp is common luminous φ 5 light emitting diode, and lamp is bright for reporting to the police.Realize DC system fault by wireless transmission and reception to locate.
Claims (1)
1. DC power system insulation fault location monitoring device, is characterized in that, voltage collection circuit (1) connects with bridge diagram (2); Bridge diagram (2) connects with signal source power circuit (3); Signal source power circuit (3) connects with wireless sending module (4); Current sensor (5) connects with signal receiver (6); Signal receiver (6) receives the signal that wireless sending module (4) sends; Signal receiver (6) connects with wireless receiving mould (7); Wireless receiving module (7) connects with language alarm module (8); Language alarm module (8) connects with photoelectric alarm module (9);
Voltage collection circuit (1) gathers voltage transmission to bridge diagram (2); Bridge diagram (2) judges that the voltage transmission gathering is to signal source power circuit (3); Signal source power circuit (3) the Signal transmissions judged to wireless sending module (4); Wireless sending module (4) sends to signal receiver (6) signal; Current sensor (5) the Signal transmissions sensed to signal receiver (6); Signal receiver (6) the Signal transmissions received to wireless receiving module (7); Wireless receiving module (7) Signal transmissions to language alarm module (8); Language alarm module (8) Signal transmissions to photoelectric alarm module (9); Signal receiver (6) again simultaneously the Signal transmissions received to wireless receiving module (7) and language alarm module (8) and photoelectric alarm module (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510551358.8A CN105158661A (en) | 2015-09-01 | 2015-09-01 | Insulation fault positioning monitoring device of direct-current power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510551358.8A CN105158661A (en) | 2015-09-01 | 2015-09-01 | Insulation fault positioning monitoring device of direct-current power supply system |
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| CN105158661A true CN105158661A (en) | 2015-12-16 |
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| CN201510551358.8A Pending CN105158661A (en) | 2015-09-01 | 2015-09-01 | Insulation fault positioning monitoring device of direct-current power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112269139A (en) * | 2020-10-14 | 2021-01-26 | 无锡友达电子有限公司 | Multi-path LED lamp fault detection device |
| CN114062963A (en) * | 2021-10-19 | 2022-02-18 | 广西电网有限责任公司防城港供电局 | Direct current system insulation monitoring device capable of finding specific grounding point |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228236Y (en) * | 1994-12-31 | 1996-05-29 | 戴祖明 | DC systems insulation fault in-line monitoring alarm and fault locating device |
| JP2010151576A (en) * | 2008-12-25 | 2010-07-08 | Chugoku Electric Power Co Inc:The | Insulation diagnostic system |
| CN203178410U (en) * | 2012-12-12 | 2013-09-04 | 新乡市新电电力科技有限公司 | DC insulation detecting device |
| CN203673005U (en) * | 2013-11-28 | 2014-06-25 | 深圳市金威源科技股份有限公司 | Direct current insulation monitor |
| CN203673016U (en) * | 2013-12-03 | 2014-06-25 | 国家电网公司 | Distribution network fault area positioning system |
| CN204374371U (en) * | 2015-02-04 | 2015-06-03 | 浙江科畅电子有限公司 | A kind of D.C. isolation monitoring device detects the failure alarm circuit of electric bridge |
| CN204945341U (en) * | 2015-09-01 | 2016-01-06 | 国网吉林省电力有限公司延边供电公司 | DC power system insulation fault location monitoring device |
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2015
- 2015-09-01 CN CN201510551358.8A patent/CN105158661A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228236Y (en) * | 1994-12-31 | 1996-05-29 | 戴祖明 | DC systems insulation fault in-line monitoring alarm and fault locating device |
| JP2010151576A (en) * | 2008-12-25 | 2010-07-08 | Chugoku Electric Power Co Inc:The | Insulation diagnostic system |
| CN203178410U (en) * | 2012-12-12 | 2013-09-04 | 新乡市新电电力科技有限公司 | DC insulation detecting device |
| CN203673005U (en) * | 2013-11-28 | 2014-06-25 | 深圳市金威源科技股份有限公司 | Direct current insulation monitor |
| CN203673016U (en) * | 2013-12-03 | 2014-06-25 | 国家电网公司 | Distribution network fault area positioning system |
| CN204374371U (en) * | 2015-02-04 | 2015-06-03 | 浙江科畅电子有限公司 | A kind of D.C. isolation monitoring device detects the failure alarm circuit of electric bridge |
| CN204945341U (en) * | 2015-09-01 | 2016-01-06 | 国网吉林省电力有限公司延边供电公司 | DC power system insulation fault location monitoring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112269139A (en) * | 2020-10-14 | 2021-01-26 | 无锡友达电子有限公司 | Multi-path LED lamp fault detection device |
| CN114062963A (en) * | 2021-10-19 | 2022-02-18 | 广西电网有限责任公司防城港供电局 | Direct current system insulation monitoring device capable of finding specific grounding point |
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Application publication date: 20151216 |