CN102280864B - Post-failure live treatment method for protection device of distribution network system and portable protection device - Google Patents
Post-failure live treatment method for protection device of distribution network system and portable protection device Download PDFInfo
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- CN102280864B CN102280864B CN201110227783.3A CN201110227783A CN102280864B CN 102280864 B CN102280864 B CN 102280864B CN 201110227783 A CN201110227783 A CN 201110227783A CN 102280864 B CN102280864 B CN 102280864B
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- 230000001681 protective effect Effects 0.000 claims description 58
- 230000007547 defect Effects 0.000 claims description 9
- 230000008030 elimination Effects 0.000 claims description 9
- 238000003379 elimination reaction Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000003672 processing method Methods 0.000 claims description 9
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
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Abstract
The invention relates to a portable protection device for post-failure live treatment of a protection device of a distribution network system and a live treatment method thereof, and the portable protection device comprises a current clamp clamped on the connection line between the secondary side of a current transformer and a terminal block, a sampling module for collecting current on the current lamp, a control module connected with the output end of the sampling module and a tripping relay connected with the output end of the control module, wherein the tripping relay is used for connecting with a switch tripping control loop, when failure occurs in the protection device, the tripping relay is put into the connection with the switch tripping control loop under drive of the control module so as to enable the portable protection device to replace the protection device for being put into operation temporarily. As live working treatment is adopted during one equipment interval corresponding to the failure protection device, the workflow is simplified, the working efficiency is improved and the safe operation level of a power grid is not affected.
Description
Technical field
the present invention relates to the charged processing method after protective device fault in a kind of distribution network systems; relate in particular to and utilize Portable protection device to replace failure protecting device; the interim basic defencive function of realizing an operational outfit of failure protecting device institute correspondence, thereby without taking power down to be with electric treatment to failure protecting device to concrete primary equipment.
Background technology
distribution system; especially for 35KV and following electric pressure system; it is conventionally by transformer station; the 10kV/20kV/35kV output bus, a plurality of primary equipments interval of carry on bus that are connected with transformer station form; in order to monitor and protect the ruuning situation at primary equipment interval; the corresponding protective device in each primary equipment interval; protective device is in operation and self tends to occur following fault, as power panel fault, CPU board fault, input and output plate fault, interchange plate fault, sampling plate fault and liquid crystal board fault etc.
at present; after 35kV and following electric pressure line protective devices fault; operating management department all needs the concrete primary equipment interval of first protective device being protected to take power down; then failed equipment is taked defect elimination or changed and process; the main cause of its power failure is for avoiding primary equipment unprotect operation after protective device fault; the potential power supply hidden danger that continues operation when a certain equipment interval unprotect is when when this interval outlet fault; higher level protects overstep tripping, causes power supply area power failure in short-term or when long on a large scale.
according to DL/T 584-2007; the requirement that regulation and the < < of State Grid Corporation of China power system relay protection device operational management regulation > > are adjusted in the operation of 3-110kV grid relay protective apparatus, any primary equipment all must not move under unshielded state.The conventional treatment method being limited by this requirement mainly contains following shortcoming:
(1), need to be to the operation that has a power failure of the corresponding primary equipment of failure protecting device interval, time and effort consuming, inefficiency;
(2), need to have a power failure to the corresponding primary equipment of failure protecting device interval, if its power supply area in single power supply, power supply area power consumer must face power failure risk, power supply enterprise faces liability for breach of contract equally;
(3), need to have a power failure to the corresponding primary equipment of failure protecting device interval, Ruo Qiwei network system transformer station's interconnection interval, power system operating mode is weak, electric power netting safe running risk improves.
Summary of the invention
the object of the invention is to provide and a kind ofly can replaces failure protecting device; the interim basic defencive function of realizing an operational outfit of failure protecting device institute correspondence, thereby without the Portable protection device of taking power down to process failure protecting device to concrete primary equipment.
in order to achieve the above object, the technical solution adopted in the present invention is: after a kind of distribution network systems protective device fault, be with electric treatment Portable protection device, described distribution network systems comprises transformer station, export with transformer station a plurality of primary equipments interval that bus is connected, for monitoring the protective device of corresponding primary equipment interval running status, primary equipment interval described in each comprises switch, current transformer, switch trip control loop, described current transformer primary side is associated with corresponding described switch outlet, its secondary side is connected with protective device by terminal board, described protective device output be connected with described switch trip control loop with output drive signal control described switch deciliter, described Portable protection device comprises for clamping the electric current folder on line between described Current Transformer Secondary side and terminal board, for gathering the sampling module of the upper size of current of electric current folder, the control module being connected with sampling module output, the tripping relay being connected with control module output, described tripping relay is for being connected with described switch trip control loop, when described protective device breaks down, described tripping relay drops into and being connected of switch trip control loop under the driving of control module, so that Portable protection device replaces described protective device to put into operation temporarily.
optimally, it also comprises and is connected to the tripping operation monitoring module for monitoring that whether described switch trip control loop is intact between described control module output and switch trip control loop.Further, described tripping operation monitoring module is by co-bit relay, form with the co-bit relay normally closed contact buzzer being connected that is in series.
the present invention also provides a kind of charged processing method of above-mentioned Portable protection device after distribution network systems protective device fault that adopt, and it comprises the steps:
(a), Portable protection device is passed into alternating current, carry out current ration and adjust, the current value of adjusting is consistent with the protective device current ration of circuit to be accessed;
(b), in described Current Transformer Secondary side and the line between terminal board, clamp the electric current folder into described Portable protection device, current signal is introduced to its sampling module;
(c) whether, with pincerlike phase meter, measuring current signal enters sampling module, the switch trip control loop described in if so, the tripping relay idle contact of Portable protection device being accessed;
(d), confirm that trip pressing plate two ends on Portable protection device are without heteropolarity current potential after, drop into this pressing plate, simultaneously trip pressing plate and the reclosing pressing plate of the protective device of disabling faulty;
(e), by Current Transformer Secondary side protective current loop in primary equipment interval with measure current circuit short circuit on terminal board, and disconnect the brace in protective current loop;
(f), under Portable protection device drops into, distribution network systems continues normal operation, and to failure protecting device overhaul, defect elimination.
after step (f); between new protective device access terminal board and brace; by inputting test current to carry out fixed value adjusting to it; after adjusting, remove the corresponding short circuit sheet of Current Transformer Secondary side; recover new protective device and the brace between switch trip control loop, with the protective device to new, introduce current signal.
measuring being connected between tripping relay that trip pressing plate, reclosing pressing plate two ends disconnect Portable protection device after without heteropolarity current potential and switch trip control loop, so that Portable protection device is out of service.
owing to adopting technique scheme; the present invention has the following advantages: Portable protection device of the present invention is after protective device breaks down; due to the processing that do not have a power failure has been taked in the corresponding primary equipment of failure protecting device interval; workflow is simplified; operating efficiency is improved, and electric power netting safe running level is unaffected.
Accompanying drawing explanation
accompanying drawing 1 is the distribution network systems schematic diagram of the present invention with Portable protection device;
accompanying drawing 2 is the terminal row wiring schematic diagram between current transformer and protective device;
accompanying drawing 3 is tripping operation supervision modular circuit schematic diagram;
wherein: 11, transformer; 12, main transformer switch; 13, bus; 21, switch; 22, current transformer; 23, terminal board; 3, protective device; 4, switch trip control loop; 5, Portable protection device; 51, current clamp; 52, sampling module; 53, control module; 54, tripping relay; 55, tripping operation monitors module; 551, co-bit relay; 552, buzzer;
Embodiment
below in conjunction with accompanying drawing, the preferred specific embodiment of the present invention is described:
distribution network systems as shown in Figure 1, it is mainly by substation level, primary equipment wall and protective device form, wherein, substation level is mainly by transformer 11, the main transformer switch 12 being connected with transformer 11 outputs, bus 13 forms, primary equipment wall comprises a plurality of, its carry is on bus 13, output is for being connected to realize power supply with user load, each primary equipment interval comprises switch 21, the current transformer 22 that primary side is connected with switch 21 outlets, the secondary side of current transformer 22 is connected with protective device 3 by terminal board 23, between protective device 3 and switch 21, be also provided with switch trip control loop 4, in normal operation, the current signal of protective device 3 sampling current transformers 22, and compare with setting current value, if electric current output is greater than setting value, the work of driving switch tripping operation control loop is with the tripping operation of control switch 21.
after protective device 3 self breaks down; because must having protection equipment, primary equipment interval carries out Stateful Inspection and protection; otherwise by main transformer protection tripping operation, the expansion of accident will be caused when this line fault; therefore; the invention provides a kind of Portable protection device; it can replace protective device temporarily after failed equipment breaks down, and makes to form path between current transformer 22, Portable protection device 5, switch trip control loop 4, to realize the control to switch 21.
described Portable protection device 5 is mainly comprised of current clamp 51, sampling module 52, control module 53, tripping relay 54, and described current clamp 51 is for the line of forceps major between current transformer 22 and terminal board 23 that break down at corresponding protective device.Described sampling module 52 is for adopting the current value on current clamp 51.Described control module 53 is for the current value receiving is processed, and compares with the setting current value of setting.Described tripping relay 54 is for being connected with switch trip control loop 4, to form break-make road between Portable protection device 5 and switch trip control loop 4, thereby to switch 21 control of tripping.
in the present embodiment, Portable protection device 5 also comprises that tripping operation monitors module 55, described tripping operation monitor module 55 mainly by co-bit relay 551, the buzzer 552 that is in series with co-bit relay 551 forms, as shown in Figure 3.
described sampling module 52, control module 53, tripping relay 54 and tripping operation monitor that module 55 is packaged into an instrument, it possesses the input/output ports such as of ac input, program, definite value, switching value input, switching value output, DC power supply, abnormal alarm, simple in structure, be convenient for carrying use.
above the principle of Portable protection device is formed and is illustrated, will be introduced its charged processing method below:
if certain corresponding protective device in primary equipment interval breaks down, in the situation that not needing to have a power failure, be with in accordance with the following steps electric treatment:
(1), mancarried device is passed into ac charging power supply, carry out fixed value adjusting;
(2), on the line between current transformer and terminal board, three pincerlike electric currents folders are clamped respectively into A, B, C three-phase protective electricity consumption streamline, the sampling circuit of mancarried device is introduced current signal;
(3), with pincerlike phase meter, survey electric current and confirm that protective current correctly enters mancarried device, self-check of device program starts simultaneously;
(4), by mancarried device tripping relay idle contact access switch trip control loop;
(5), the energy storing of switch power supply at primary equipment interval is stopped using;
(6), confirm that trip pressing plate two ends on mancarried device are without heteropolarity current potential after, drop into pressing plate, mancarried device enters operating state;
(7), the trip pressing plate of disabling faulty protective device and reclosing pressing plate;
(8), by Current Transformer Secondary side protective current loop in interval and measure current circuit on terminal board short circuit the brace that disconnects protective current loop so that the current circuit of failure protecting device (referring to Fig. 2) out of service;
(9), failure protecting device is in dead status, can failure protecting device be overhauled or be changed;
(10), after failure protecting device defect elimination, re-start fixed value adjusting, transmission.Its correctness can be by trip pressing plate and reclosing platen potential monitoring judgement;
(11), recovery and protection current circuit and measure the brace of current circuit on terminal board, connect the corresponding short circuit sheet of running current instrument transformer secondary side, after failure protecting device defect elimination, be reintroduced back to equipment running current signal;
(12), measure tripping operation, reclosing pressing plate two ends and recover pressing plate after without heteropolarity current potential, recover energy storing of switch power supply, normally operation after failure protecting device defect elimination;
(13), Portable protection device is out of service;
so far, the charged work for the treatment of after protective device fault finishes.
adopt above-mentioned processing method, tool of the present invention has the following advantages:
(1), due to the processing that do not have a power failure has been taked in the corresponding primary equipment of failure protecting device interval, workflow is simplified, and has improved operating efficiency;
(2), due to the processing that do not have a power failure has been taked in the corresponding primary equipment of failure protecting device interval, its primary equipment power supply area user is without facing power failure risk, power supply enterprise is also without facing liability for breach of contract;
(3), due to the processing that do not have a power failure has been taked in the corresponding primary equipment of failure protecting device interval, the 35kV of taking into account system transformer station and following electric pressure circuit need have the interconnector of available each other, electric power netting safe running level is unaffected;
(4), for most common failures such as protective device edition upgrading, power panel fault, CPU board fault, input and output plate fault, interchange plate fault, sampling plate fault, liquid crystal board faults; and protective device changes definite value; processing all can not have a power failure; greatly reduced due to the impact of protective relaying device fault on user, its economic benefit and social benefit are obvious.
Claims (5)
1. after a distribution network systems protective device fault, utilize the charged processing method of Portable protection device, described distribution network systems comprises transformer station, export with transformer station a plurality of primary equipments interval that bus is connected, for monitoring the protective device of corresponding primary equipment interval running status, primary equipment interval described in each comprises switch, current transformer, switch trip control loop, described current transformer primary side is associated with corresponding described switch outlet, its secondary side is connected with protective device by terminal board, described protective device output be connected with described switch trip control loop with output drive signal control described switch deciliter, described Portable protection device comprises for clamping the electric current folder on line between described Current Transformer Secondary side and terminal board, for gathering the sampling module of the upper size of current of electric current folder, the control module being connected with sampling module output, the tripping relay being connected with control module output, described tripping relay is for being connected with described switch trip control loop, when described protective device breaks down, described tripping relay drops into and being connected of switch trip control loop under the driving of control module, so that Portable protection device replaces described protective device to put into operation temporarily, it is characterized in that: it comprises the steps:
(a), Portable protection device is passed into alternating current, carry out current ration and adjust, the current value of adjusting is consistent with the protective device current ration of circuit to be accessed;
(b), in described Current Transformer Secondary side and the line between terminal board, clamp the electric current folder into described Portable protection device, current signal is introduced to its sampling module;
(c) whether, with pincerlike phase meter, measuring current signal enters sampling module, the switch trip control loop described in if so, the tripping relay idle contact of Portable protection device being accessed;
(d), confirm that trip pressing plate two ends on Portable protection device are without heteropolarity current potential after, drop into this pressing plate, simultaneously trip pressing plate and the reclosing pressing plate of the protective device of disabling faulty;
(e), by Current Transformer Secondary side protective current loop in primary equipment interval with measure current circuit short circuit on terminal board, and disconnect the brace in protective current loop;
(f), under Portable protection device drops into, distribution network systems continues normal operation, and to failure protecting device overhaul, defect elimination.
2. after distribution network systems protective device fault according to claim 1, utilize the charged processing method of Portable protection device; it is characterized in that: after step (f); between the protective device access terminal board after defect elimination and brace; by inputting test current to carry out fixed value adjusting to it; after adjusting, remove the corresponding short circuit sheet of Current Transformer Secondary side; recover protective device after described defect elimination and the brace between switch trip control loop, with the protective device after described defect elimination, introduce current signal.
3. after distribution network systems protective device fault according to claim 2, utilize the charged processing method of Portable protection device; it is characterized in that: measuring being connected between tripping relay that trip pressing plate, reclosing pressing plate two ends disconnect Portable protection device after without heteropolarity current potential and switch trip control loop, so that Portable protection device is out of service.
4. after distribution network systems protective device fault according to claim 1, utilize the charged processing method of Portable protection device, it is characterized in that: described Portable protection device also comprises and is connected to the tripping operation monitoring module for monitoring that whether described switch trip control loop is intact between described control module output and switch trip control loop.
5. after distribution network systems protective device fault according to claim 4, utilize the charged processing method of Portable protection device, it is characterized in that: described tripping operation monitoring module is mainly by co-bit relay, form with the co-bit relay normally closed contact buzzer being connected that is in series.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110227783.3A CN102280864B (en) | 2011-08-10 | 2011-08-10 | Post-failure live treatment method for protection device of distribution network system and portable protection device |
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| CN201110227783.3A CN102280864B (en) | 2011-08-10 | 2011-08-10 | Post-failure live treatment method for protection device of distribution network system and portable protection device |
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| CN102280864B true CN102280864B (en) | 2014-04-23 |
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| CN107834413B (en) * | 2017-12-04 | 2023-06-27 | 国家电网公司 | Device for live replacement of protection device and live construction method |
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| CN109491295B (en) * | 2018-12-05 | 2020-06-16 | 岭澳核电有限公司 | Control system |
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| DE2832059A1 (en) * | 1977-07-25 | 1979-02-15 | Richard Gall | Power supply overload protection - has current sensor and actuator disconnecting subsidiary loads if their current demands endanger supply |
| CN201504084U (en) * | 2009-01-06 | 2010-06-09 | 牡丹江电业局 | Portable digital protection and monitoring device |
| CN202206125U (en) * | 2011-08-10 | 2012-04-25 | 江苏省电力公司苏州供电公司 | Portable protection device for electrification process after distribution system protection device failure |
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2011
- 2011-08-10 CN CN201110227783.3A patent/CN102280864B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2832059A1 (en) * | 1977-07-25 | 1979-02-15 | Richard Gall | Power supply overload protection - has current sensor and actuator disconnecting subsidiary loads if their current demands endanger supply |
| CN201504084U (en) * | 2009-01-06 | 2010-06-09 | 牡丹江电业局 | Portable digital protection and monitoring device |
| CN202206125U (en) * | 2011-08-10 | 2012-04-25 | 江苏省电力公司苏州供电公司 | Portable protection device for electrification process after distribution system protection device failure |
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Effective date of registration: 20121129 Address after: 215004 No. three Xiang Xiang Road, Suzhou, Jiangsu, 458 Applicant after: Suzhou Power Supply Co., Ltd. of Jiangsu Electric Power Company Applicant after: Jiangsu Electric Power Company Applicant after: State Grid Corporation of China Address before: 215004 No. three Xiang Xiang Road, Suzhou, Jiangsu, 458 Applicant before: Suzhou Power Supply Co., Ltd. of Jiangsu Electric Power Company |
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