CN103325627A - Fast and intelligent 10KV pole-mounted breaker - Google Patents
Fast and intelligent 10KV pole-mounted breaker Download PDFInfo
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- CN103325627A CN103325627A CN2012100746427A CN201210074642A CN103325627A CN 103325627 A CN103325627 A CN 103325627A CN 2012100746427 A CN2012100746427 A CN 2012100746427A CN 201210074642 A CN201210074642 A CN 201210074642A CN 103325627 A CN103325627 A CN 103325627A
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Abstract
The invention discloses a fast and intelligent 10KV pole-mounted breaker. The fast and intelligent 10KV pole-mounted breaker is composed of a breaker body and an intelligent control box which are connected through multicore shield cables, an epoxy resin embedded pole is adopted, and the fast and intelligent 10KV pole-mounted breaker is good in weather resistance and ageing resistant, prevents ultraviolet light, and is high in strength and good in electrical insulation performance. Small-scale integrated design is adopted, a current transformer and a voltage transformer are integrated in the pole, the structure is compact, and mounting and maintenance are easy. A high-speed algorithm is adopted, exit protecting signals can be provided in 10ms, the fast mechanical property of a permanent magnetic mechanism is combined, and a line fault is removed and isolated in 25ms. A single-phase earth fault (including low current earthing) detecting function is achieved. The technology of self-diagnosis of the running state and the mechanical property of the breaker is achieved, and maintenance efficiency is improved. A low-power design technology is adopted, solar energy and CT are utilized to supply power and are mutually supplemented, an external power source is not needed, and the power-driven operation can be achieved. The fast and intelligent 10KV pole-mounted breaker is provided with an Ethernet port, and an IEC61850 specification interface is provided.
Description
Technical field
The invention belongs to the intelligent electric appliance field, be specifically related to the quick, intelligent pole-mounted circuit breaker of a kind of 10KV.
Background technology
At present, the intelligent degree of mesohigh circuit breaker is lower, and the traditional type circuit breaker exists a lot of shortcomings not enough, can not adapt to the needs of intelligent distribution network development.
Intelligent breaker is compared with the traditional type circuit breaker, the function that all can set parameters such as overload long delay, short circuit short time-delay, instantaneous operation protection, one-phase ground protection, load monitoring protections is not only arranged, and have the measurement Presentation Function.The data of measuring both can show on the spot that also can transfer data to host computer showed, self-diagnostic function can realize the High Voltage Circuit Breaker Condition is detected and communication function.When electric power networks communicates networking, intelligent breaker can be used as the remote terminal of power automation network and realizes " four is distant ", be so-called remote measurement, remote signalling, remote control and remote regulating, and intelligent breaker supports various protocols with applicable different networking requirement, the field is flexible.
The promotion and application of intelligent permanent magnet mechanism vacuum circuit-breaker, can realize the reconstruct of distribution network topology, realize fast fault location, isolate and restore electricity, improve stability, fail safe, the reliability of electrical network, improve operation of power networks efficient, realize senior power distribution automation, make up the green electric power supply system.
The present invention adopts vacuum extinction technology, compound inslation technology, permanent magnetic drive switching technique, intelligent control technology, long-range self-diagnosis technology; carry out computer optimization design and simulation calculation, succeed in developing permanent magnetic actuator vacuum circuit breaker on the quick, intelligent post of the 10KV that integrates measurement, protection, control, communication, power supply.
Summary of the invention
The present invention addresses the above problem provides a kind of employing vacuum extinction technology, compound inslation technology, permanent magnetic drive switching technique, intelligent control technology, long-range self-diagnosis technology; carry out computer optimization design and simulation calculation, succeed in developing permanent magnetic actuator vacuum circuit breaker on the quick, intelligent post of the 10KV that integrates measurement, protection, control, communication, power supply.
For addressing the above problem, the present invention realizes by following scheme: the quick, intelligent pole-mounted circuit breaker of a kind of 10KV, consisted of by breaker body and intelligent control box two parts, and connected by shielded multiconductor cable between the two.
Described breaker body is by epoxy resin pole, vacuum interrupter, permanent-magnet operating mechanism, insulated tension pole, electric conductor etc. consists of up and down.
Described intelligent control box is made of intelligent controller, storage capacitor, reserve battery, and this intelligent controller is according to the voltage and current parameter that gathers, Real-Time Monitoring line conditions; When circuit broke down, intelligent controller formed failure criterion in half period, and fault current is excised in the action of order permanent-magnet operating mechanism in 21ms; And by GPRS to main website report fault message and circuit-breaker status information.
The inside of described breaker body is integrated CT and CVT reduced equipment volume, and convenient the installation is easy to realize Based Intelligent Control.
Described breaker body is inner integrated temperature sensor and displacement transducer, the temperature of sense switch contact and switch over travel have self-diagnostic function online, have realized the intelligent management of equipment.
Described intelligent controller adopts modularized design, comprises CPU module, data acquisition module, power management module, permanent magnetic drive module, communication module.
Described intelligent controller adopts the sliding window fft algorithm based on high-speed dsp, can provide protection outlet signal in half cycle, and in conjunction with the permanent magnet mechanism rapid action feature, excision and isolation line fault in 25ms; In order to eliminate the impact of shoving, integrated use signal characteristic comparison and digital filtering technique, eliminated the malfunction that causes because of instantaneous disturbance.
Described intelligent controller provides the relay protection functions such as the protection of electric current syllogic, one-phase ground protection, low-voltage lockout, can realize Fault Isolation and fault location; Especially for low current grounding, by transient zero-sequence current component amplitude in calculating and the comparative feature frequency band, can effectively determine faulty line.Has the reclosing function.
The power management module of described intelligent controller adopts low power design technique, supports PT power supply, CT self-powered, standby battery and solar powered; Described standby battery provides the management of charging and discharging function, automatically carries out storage battery activation.
The communication module of described intelligent controller is supported electric power standard communication protocol, supports the IEC61850 agreement; Have the failure wave-recording function, can record nearly 5000 logouts, and integrated Ethernet interface, support the light mouth and be connected a mouthful connection, and integrated GPRS module, conveniently and master station communication.
The present invention adopts the epoxy resin pole, and good weatherability is anti-aging, antiultraviolet, and high strength, electrical insulation properties is good; The present invention adopts small-sized integrated design, integrated current and voltage transformer in pole, and compact conformation is easy to installation and maintenance; This project adopts fast algorithm, can provide protection outlet signal in 10ms, and in conjunction with the Quick mechanical characteristic of permanent magnet mechanism, excision and isolation line fault in 25ms; This project has realized phase-to-ground fault detection function (comprising small current neutral grounding); This project has realized the self-diagnosis technology of the High Voltage Circuit Breaker Condition, mechanical property, has improved maintenance efficiency; This project adopts low power design technique, utilizes solar powered and the CT power supply, complements one another, need not external power supply, can realize electric operating; The present invention has Ethernet interface, and IEC61850 stipulations interface is provided.
Beneficial effect of the present invention is as follows:
1, adopts epoxy resin pole, good weatherability; Hydrophobicity is strong, good insulating;
2, adopt permanent magnet mechanism to drive, parts are few, and reliability is high;
3, use vacuum extinction, do not fill SF6 gas, not oil-filled, without the possibility of gas burst; To environment without any pollution, environmental protection;
4, gather simultaneously the line voltage distribution current parameters, use fast algorithm, in conjunction with the Quick mechanical characteristic of permanent magnet mechanism, realized the quick protection of circuit breaker, can be at 21ms internal cutting off fault current;
5, adopt low power design technique, support solar poweredly, meet the environmental protection theory;
6, realize the low current grounding judgement;
7, integrated CT and CVT, miniaturization is easily measured;
8, have online detection and self diagnostic capability;
9, have three sections current protections, directional power protection, voltage blocking protection, the characteristics such as one-phase ground protection; Has the reclosing function;
10, has IEC61850 stipulations interface.
Description of drawings
Fig. 1 is the quick, intelligent pole-mounted circuit breaker electrical schematic diagram of 10KV of the present invention;
Fig. 2 is scheme of installation on the post of the present invention;
Fig. 3 is the quick, intelligent pole-mounted circuit breaker bulk junction of 10KV of the present invention composition;
Fig. 4 is the quick, intelligent pole-mounted circuit breaker controller principle of 10KV of the present invention figure.
Embodiment
The quick, intelligent pole-mounted circuit breaker of the technical solution adopted in the present invention: 10KV is made of breaker body and intelligent control box two parts.Breaker body is made of pole, vacuum interrupter, permanent-magnet operating mechanism, insulated tension pole, embedded type C T/CVT, temperature sensor, displacement transducer etc.Intelligent control box is made of intelligent controller, storage capacitor, stand-by power supply.Intelligent controller is according to the voltage and current parameter that gathers, Real-Time Monitoring line conditions; When circuit broke down, intelligent controller formed failure criterion in half period, and fault current is excised in the action of order permanent-magnet operating mechanism in 21ms; And by GPRS to main website report fault message and circuit-breaker status information.
As shown in Figure 1, Fig. 1 is the quick, intelligent pole-mounted circuit breaker electrical schematic diagram of 10KV.Breaker body and control cabinet all are installed on the post, are connected by shielded multiconductor cable between the two.Cable all adopts highly reliable aviation plug, water-tight with being connected of body and control cabinet.(seeing that Fig. 2 is scheme of installation on the post).
As shown in Figure 3, Fig. 3 is the quick, intelligent pole-mounted circuit breaker bulk junction of 10KV composition.Insulating polar pole is formed by poured with epoxy resin, and vacuum interrupter is installed in its inside; Electric conductor is made of the silver-plated copper post up and down, has extremely low conducting resistance; CT and CVT are cast in the pole, have reduced equipment volume, and convenient the installation is easy to realize Based Intelligent Control; The breaker body casing adopts stainless steel material, inside and outside employing epoxy resin spraying, and adopt the sealing of special (purpose) rubber circle, be fit to the requirement of outdoor complex environment long-time running; Permanent-magnet operating mechanism is installed in the body cabinet, and volume is little, and is non-maintaining; Temperature sensor embeds in the pole, and displacement transducer is installed in the body cabinet, and temperature and displacement signal are converted into digital signal and reach controller by cable.
As shown in Figure 4, Fig. 4 is the quick, intelligent pole-mounted circuit breaker controller principle of 10KV figure.Intelligent controller adopts modularized design, comprises CPU module, data acquisition module, power management module, permanent magnetic drive module, communication module etc.
Embodiment one: CPU module monitors circuit running status, according to operation result, starting protection moves or sends warning message.Data collecting module collected three-phase voltage, three-phase current and zero-sequence current carry out the A/D conversion, give the CPU module digital signal.The interchange that power management module will be inputted (PT or CT), or direct current (solar powered) are converted into direct current 12V, and system power supply is provided; Storage battery, storage capacitor are carried out management of charging and discharging.The permanent magnetic drive circuit module is according to the divide-shut brake instruction of processor, and drive coil is carried out corresponding action.Communication interface modules provides with Ethernet interface and serial ports, supports the light mouth and be connected mouthful to connect, and integrated GPRS module, be used for reception external command or transmission local data.
Embodiment two: this intelligent controller adopts the sliding window fft algorithm of half cycles based on high-speed dsp, can provide protection outlet signal in half cycle, and in conjunction with permanent magnet mechanism, excision and isolation line fault in 25ms; In order to eliminate the impact of shoving, the comparison of integrated use signal characteristic and digital filtering technique have been eliminated the malfunction that causes because of instantaneous disturbance.For the signal that shoves, for various phenomenons (as: thunder and lightning, load variations etc.), extract signal characteristic (as: amplitude, frequency, duration etc.), set up aspect ratio to the storehouse.The CPU module is at first carried out filtering to sampled signal, then calculates fast; If judge circuit fault is arranged, then further extract signal characteristic, and compare with the signal characteristic storehouse, with the elimination impact of shoving, improve the correctness that protection is moved.
Embodiment three: this intelligent controller provides the relay protection functions such as the protection of electric current syllogic, one-phase ground protection, low-voltage lockout, can realize Fault Isolation and fault location; Especially for low current grounding, by transient zero-sequence current component amplitude in calculating and the comparative feature frequency band, can effectively determine faulty line.
Embodiment four: this intelligence control device is supported electric power standard communication protocol, comprises IEC61850,101,104 etc.
Embodiment five: this intelligent controller has the failure wave-recording function, can record nearly 5000 logouts.
Embodiment six: this intelligent controller has self-diagnostic function, and the online temperature of sense switch contact and switch over travel are realized the intelligent management of equipment.
Claims (10)
1. the quick, intelligent pole-mounted circuit breaker of 10KV is characterized in that: be made of breaker body and intelligent control box two parts, connected by shielded multiconductor cable between the two.
2. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 1 is characterized in that: described breaker body is by epoxy resin pole, vacuum interrupter, permanent-magnet operating mechanism, insulated tension pole, electric conductor etc. consists of up and down.
3. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 1, it is characterized in that: described intelligent control box is made of intelligent controller, storage capacitor, reserve battery, this intelligent controller is according to the voltage and current parameter that gathers, Real-Time Monitoring line conditions; When circuit broke down, intelligent controller formed failure criterion in half period, and fault current is excised in the action of order permanent-magnet operating mechanism in 21ms; And by GPRS to main website report fault message and circuit-breaker status information.
4. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 2 is characterized in that: the inside of described breaker body is integrated CT and CVT, reduced equipment volume, and convenient the installation is easy to realize Based Intelligent Control.
5. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 2, it is characterized in that: described breaker body is inner integrated temperature sensor and displacement transducer, the temperature of sense switch contact and switch over travel have self-diagnostic function online, have realized the intelligent management of equipment.
6. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 3 is characterized in that: described intelligent controller adopts modularized design, comprises CPU module, data acquisition module, power management module, permanent magnetic drive module, communication module.
7. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 3, it is characterized in that: described intelligent controller is based on high-speed dsp, adopt the sliding window fft algorithm, can in half cycle, provide protection outlet signal, and in conjunction with the permanent magnet mechanism rapid action feature, excision and isolation line fault in 25ms; In order to eliminate the impact of shoving, integrated use signal characteristic comparison and digital filtering technique, eliminated the malfunction that causes because of instantaneous disturbance.
8. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 3, it is characterized in that: described intelligent controller provides the relay protection functions such as the protection of electric current syllogic, one-phase ground protection, low-voltage lockout, can realize Fault Isolation and fault location; Especially for low current grounding, by transient zero-sequence current component amplitude in calculating and the comparative feature frequency band, can effectively determine faulty line.Has the reclosing function.
9. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 6 is characterized in that: described power management module employing low power design technique, support PT power supply, CT self-powered, standby battery and solar powered; Described standby battery provides the management of charging and discharging function, automatically carries out storage battery activation.
10. the quick, intelligent pole-mounted circuit breaker of 10KV according to claim 6 is characterized in that: described communication module support electric power standard communication protocol, support IEC61850 agreement; Have the failure wave-recording function, can record nearly 5000 logouts, and integrated Ethernet interface, support the light mouth and be connected a mouthful connection, and integrated GPRS module, conveniently and master station communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100746427A CN103325627A (en) | 2012-03-20 | 2012-03-20 | Fast and intelligent 10KV pole-mounted breaker |
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| CN2012100746427A CN103325627A (en) | 2012-03-20 | 2012-03-20 | Fast and intelligent 10KV pole-mounted breaker |
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| CN2012100746427A Pending CN103325627A (en) | 2012-03-20 | 2012-03-20 | Fast and intelligent 10KV pole-mounted breaker |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560496A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Control system of intelligent circuit breaker |
| CN104459555A (en) * | 2014-03-24 | 2015-03-25 | 中国能源建设集团广东省电力设计研究院 | Battery energy storage station DC system fault recording and collecting device |
| CN105280430A (en) * | 2015-10-20 | 2016-01-27 | 北京华电瑞通电力工程技术有限公司 | 10kV solar intelligent pole-mounted vacuum circuit breaker |
| CN106026409A (en) * | 2016-08-02 | 2016-10-12 | 广州普瑞电力控制***设备有限公司 | Integrated intelligent pole top switch |
| CN106300655A (en) * | 2015-05-28 | 2017-01-04 | 国网河南省电力公司南阳供电公司 | Intelligent distribution network open air open circuit supervising device |
| CN106451327A (en) * | 2016-11-28 | 2017-02-22 | 海格科技股份有限公司 | Circuit breaker |
| CN106549369A (en) * | 2016-12-09 | 2017-03-29 | 国网北京市电力公司 | Vacuum circuit breaking device |
| CN106602704A (en) * | 2016-12-28 | 2017-04-26 | 滁州品之达电器科技有限公司 | Outdoor high voltage switchgear power supply device |
| CN106961156A (en) * | 2017-04-19 | 2017-07-18 | 南京控驰科技有限公司 | A kind of low-voltage circuit breaker |
| CN112186633A (en) * | 2020-11-10 | 2021-01-05 | 国网上海市电力公司 | Operation method for live replacement of voltage transformer isolation device on column |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103560496A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Control system of intelligent circuit breaker |
| CN104459555A (en) * | 2014-03-24 | 2015-03-25 | 中国能源建设集团广东省电力设计研究院 | Battery energy storage station DC system fault recording and collecting device |
| CN106300655A (en) * | 2015-05-28 | 2017-01-04 | 国网河南省电力公司南阳供电公司 | Intelligent distribution network open air open circuit supervising device |
| CN105280430A (en) * | 2015-10-20 | 2016-01-27 | 北京华电瑞通电力工程技术有限公司 | 10kV solar intelligent pole-mounted vacuum circuit breaker |
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| CN106451327A (en) * | 2016-11-28 | 2017-02-22 | 海格科技股份有限公司 | Circuit breaker |
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| CN106602704A (en) * | 2016-12-28 | 2017-04-26 | 滁州品之达电器科技有限公司 | Outdoor high voltage switchgear power supply device |
| CN106961156A (en) * | 2017-04-19 | 2017-07-18 | 南京控驰科技有限公司 | A kind of low-voltage circuit breaker |
| CN112186633A (en) * | 2020-11-10 | 2021-01-05 | 国网上海市电力公司 | Operation method for live replacement of voltage transformer isolation device on column |
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