CN107329027A - Suitable for the double-bus prepared auto restart TV broken string method of discrimination of underloading - Google Patents
Suitable for the double-bus prepared auto restart TV broken string method of discrimination of underloading Download PDFInfo
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- CN107329027A CN107329027A CN201710386767.6A CN201710386767A CN107329027A CN 107329027 A CN107329027 A CN 107329027A CN 201710386767 A CN201710386767 A CN 201710386767A CN 107329027 A CN107329027 A CN 107329027A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of double-bus prepared auto restart TV broken string method of discrimination suitable for underloading, it is related to electric power safety automatics field, it is that the inlet wire connect by bus three-phase pressure loss and bus has stream to judge to the bus TV broken strings of double bus scheme prepared auto restart for prior art, when transformer station's underloading, when the inlet wire current that bus is connect is less than no flow setpoint, prepared auto restart can not judge bus three-phase TV broken strings and locking prepared auto restart easily causes the technical problem of misoperation, using including obtaining the state per inlet wire all the way that bus is connected；Obtain mother state；Every inlet wire state all the way that bus is connected carries out inclusive-OR operation with mother state and obtains first condition；Obtain bus secondary side voltage status；By first condition and bus secondary side voltage status carry out AND operation then through delay obtain TV whether the technical scheme of three-phase disconnection information, the present invention can effectively prevent the TV three-phases broken string in the case of transformer station's underloading from causing prepared auto restart malfunction, improve the power supply reliability of power network.
Description
Technical field
The present invention relates to electric power safety automatics field, more particularly to a kind of double-bus prepared auto restart TV suitable for underloading
Break method of discrimination.
Background technology
Prepared auto restart full name automatic throw-in equipment of emergency power supply, is a kind of automatic safety device, prepared auto restart is using between exchange not
Disconnected sample mode is collected carries out Fourier method calculating in real time after signal, can accurately judge power supply status, and implement delay switching
Power supply, the core of device uses High Performance SCM, including CPU module, relay module, AC power supply module, man-machine
Session module etc. is constituted, and has the advantages that strong interference immunity, reliable and stable, easy to use.
The bus TV broken strings of existing double bus scheme prepared auto restart are the inlet wires connect by bus three-phase pressure loss and bus
There is stream to be judged, this method of discrimination has a defect, be exactly transformer station's underloading, the inlet wire current that bus is connect is less than without stream
During definite value, prepared auto restart can not judge bus TV three-phases broken string and locking prepared auto restart, if now short circuit occurs for TV secondary circuits
Failure or artificial incorrect operation cause after TV air switch mistrips, and TV secondary circuits broken string, and prepared auto restart meets action logic malfunction
For export.
The content of the invention
The present invention provides a kind of double-bus prepared auto restart TV broken string method of discrimination suitable for underloading, to solve prior art
The bus TV broken strings of the prepared auto restart of double bus scheme are that the inlet wire connect by bus three-phase pressure loss and bus has stream to be judged,
When transformer station, load is lighter, and when the inlet wire current that bus is connect is less than no flow setpoint, prepared auto restart can not judge bus TV three-phases
The simultaneously locking prepared auto restart that breaks easily causes the technical problem of misoperation.
To solve the above problems, the present invention adopts the following technical scheme that realization：
A kind of double-bus prepared auto restart TV broken string method of discrimination suitable for underloading, comprises the following steps：
Obtain every inlet wire state all the way that bus is connected；
Obtain mother state；
Every inlet wire state all the way that the bus is connected carries out inclusive-OR operation with the mother state and obtains first condition；
Obtain bus secondary side voltage status；
The first condition and bus secondary side voltage status progress AND operation are obtained into preliminary TV, and whether three-phase breaks
Line information；
By the preliminary TV, whether three-phase disconnection information enters to obtain final TV after line delay anti-interference process whether three-phase breaks
Line information.
Preferably, what the acquisition bus was connected comprises the following steps per inlet wire state all the way：
S10, by inlet wire have pressure judge first via inlet wire state：Including gathering the folding condition of first via lead-in circuit breaker, adopting
Collect the primary voltage value of first via inlet wire, and the primary voltage value of the first via inlet wire and first via inlet wire are had into pressure setting value
It is compared, so that primary voltage comparative result is obtained, then by the folding of primary voltage comparative result and the first circuit breaker
State carries out the first via inlet wire state that AND operation obtains having pressure to judge by inlet wire；
S11, by inlet wire have stream judge first via inlet wire state：It is including collection first via inlet wire current and first via inlet wire is electric
Stream is compared with the first via without stream setting value inlet wire obtains first via inlet wire current state, so as to obtain having what stream judged by inlet wire
First via inlet wire state；
S12, comprehensive descision first via inlet wire state：The step S10 first via for having pressure to judge by inlet wire obtained is entered into wire
State carries out the first via inlet wire state that inclusive-OR operation obtains comprehensive descision with the first via inlet wire state for having stream to judge by inlet wire；
S13, judge the first via inlet wire state that this section of bus is connected：Including collection first via feed isolating switch folding shape
State, the comprehensive descision first via inlet wire state for then obtaining step S12 carries out AND operation and obtains bus is connected first
The state of road inlet wire；
S14, obtain according to step S10 ~ S13 method the status information per inlet wire all the way that bus is connected.
Preferably, the acquisition mother state includes：The folding condition of bus is gathered, another section of bus three is gathered
Phase voltage value simultaneously has pressure setting value to be compared another section of generatrix comparison result of acquisition with bus three-phase, finally by another section of bus
The folding condition of comparative result and bus carries out AND operation and obtains mother state.
Preferably, the acquisition bus secondary side voltage status includes：The three-phase voltage value of bus is gathered, then by bus
Three-phase voltage value is compared the secondary side voltage status for obtaining this bus with bus three-phase without pressure setting value.
, can be effective after being improved using the present invention to the TV three-phases broken string discriminating program of existing double-bus prepared auto restart
Prevent the TV three-phases broken string in the case of transformer station's underloading from causing prepared auto restart malfunction, improve the power supply reliability of power network, prevent malfunction
Cause substation power loss and large area blackout.
Brief description of the drawings
Fig. 1 is the double bus scheme figure that the present invention is provided；
Fig. 2 is the logic chart for judging certain inlet wire state all the way that the present invention is provided；
Fig. 3 is the logic chart for the judgement mother state that the present invention is provided；
Fig. 4 be the present invention provide judge the logic chart that bus secondary side voltage whether there is；
Fig. 5 is the overall logic figure for judging 1# buses TV broken strings that the present invention is provided；
Fig. 6 is the overall logic figure for judging 2# buses TV broken strings that the present invention is provided；
In figure：n：Enter line number；Ux1：1# primary voltages；I1：1# inlet wire currents；1DL：1# lead-in circuit breakers；1G1：1# enters 1 bus
Disconnecting switch；1G2：1# enters the disconnecting switch of 2 buses；Uxn：N# primary voltages；In：N# inlet wire currents；nDL：N# inlet wires break
Road device；nG1：N# enters the disconnecting switch of 1 bus；nG2：N# enters the disconnecting switch of 2 buses；#1M：No. 1 bus；#2M：No. 2 buses；
MDL：Bus；UA1：1# bus A phase voltages；UB1：1# bus B phase voltages；UC1：1# bus C phase voltages；UA2：2# is female
Line A phase voltages；UB2:2# bus B phase voltages；UC2:2# bus C phase voltages；Iw1:Inlet wire no flow setpoint；Uwy：Inlet wire is fixed without pressure
Value；Uyy：Inlet wire has pressure definite value.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with Fig. 1 in the embodiment of the present invention
~ 6, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention
A part of embodiment, rather than whole embodiments.The embodiments of the invention being generally described and illustrated herein in the accompanying drawings
The scope for being not intended to limit claimed invention is described in detail, but is merely representative of the selected embodiment of the present invention.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
A kind of double-bus prepared auto restart TV broken string method of discrimination suitable for underloading, comprises the following steps：
1st, the state per inlet wire all the way is obtained first, is obtained and is comprised the following steps per the state of inlet wire all the way：
S10, by inlet wire have pressure judge first via inlet wire state：Folding condition including gathering first via lead-in circuit breaker 1DL,
Combined floodgate value is 1, and it is 0 to open a sluice gate value, then gathers the primary voltage value Ux1 of first via inlet wire, and entering first via inlet wire
Line voltage value has pressure setting value Uyy to be compared with first via inlet wire, so that primary voltage comparative result is obtained, if Ux1>
Then value is 1 to Uyy, and otherwise value is 0, then carries out the folding condition of primary voltage comparative result and the first circuit breaker
AND operation obtains the first via inlet wire state for having pressure to judge by inlet wire；
S11, by inlet wire have stream judge first via inlet wire state：Including collection first via inlet wire current I1 and by first via inlet wire
Electric current I1 is compared with the first via without stream setting value Iw1 inlet wires obtains first via inlet wire current state, I1>Iw1 values are 1, otherwise
For 0, so as to obtain the first via inlet wire state for thering is stream to judge by inlet wire；
S12, comprehensive descision first via inlet wire state：The step S10 first via for having pressure to judge by inlet wire obtained is entered into wire
State by inlet wire with having the first via inlet wire state inclusive-OR operation that stream judges so as to obtain the first via inlet wire state of comprehensive descision；
S13, judge the first via inlet wire state that this section of bus is connected：Including collection first via feed isolating switch 1G1 foldings
State, the comprehensive descision first via inlet wire state for then obtaining step S12 carries out AND operation, obtain that bus connected the
The state of inlet wire all the way；
S14, obtain according to step S10 ~ S13 method the status information per inlet wire all the way that bus is connected.
2nd, obtaining mother has electricity condition：Folding condition including gathering bus, gathers another section of bus three-phase electricity
Bus three-phase voltage value and bus three-phase are simultaneously had pressure setting value Uyy to be respectively compared another section of mother of acquisition by pressure value UA2, UB2, UC2
Line comparative result, UA2, UB2, UC2 ＞ Uyy are 1, are otherwise 0, finally by another section of generatrix comparison result and bus
Folding condition progress AND operation, which obtains mother, electricity condition；
3rd, every inlet wire state all the way that bus is connected is subjected to inclusive-OR operation with mother state and obtains first condition；
4th, bus secondary side voltage status is obtained, obtaining bus secondary side voltage status includes：Gather the three-phase voltage value of bus
The three-phase voltage value of bus, is then compared, UA1, UB1, UC1 by UA1, UB1, UC1 with bus three-phase without pressure setting value Uwy
＜ Uwy are 1, are otherwise 0, obtain the secondary side voltage status of this bus；
5th, by first condition and bus secondary side voltage status carry out AND operation obtain preliminary TV whether three-phase disconnection information；
6th, again by preliminary TV whether three-phase disconnection information enter line delay it is anti-interference after obtain final TV whether three-phase broken string believed
Breath.
Claims (4)
- The method of discrimination 1. a kind of double-bus prepared auto restart TV suitable for underloading breaks, it is characterised in that comprise the following steps：Obtain every inlet wire state all the way that bus is connected；Obtain mother state；Every inlet wire state all the way that the bus is connected carries out inclusive-OR operation with the mother state and obtains first condition；Obtain bus secondary side voltage status；The first condition and bus secondary side voltage status progress AND operation are obtained into preliminary TV, and whether three-phase breaks Line information；By the preliminary TV, whether three-phase disconnection information enters to obtain final TV after line delay anti-interference process whether three-phase breaks Line information.
- 2. according to the method described in claim 1, it is characterised in that：What the acquisition bus was connected comprises the following steps per inlet wire state all the way：S10, by inlet wire have pressure judge first via inlet wire state：Including gathering the folding condition of first via lead-in circuit breaker, adopting Collect the primary voltage value of first via inlet wire, and the primary voltage value of the first via inlet wire and first via inlet wire are had into pressure setting value It is compared, so that primary voltage comparative result is obtained, then by the folding of primary voltage comparative result and the first circuit breaker State carries out the first via inlet wire state that AND operation obtains having pressure to judge by inlet wire；S11, by inlet wire have stream judge first via inlet wire state：It is including collection first via inlet wire current and first via inlet wire is electric Stream is compared with the first via without stream setting value inlet wire obtains first via inlet wire current state, so as to obtain having what stream judged by inlet wire First via inlet wire state；S12, comprehensive descision first via inlet wire state：The step S10 first via for having pressure to judge by inlet wire obtained is entered into wire State carries out the first via inlet wire state that inclusive-OR operation obtains comprehensive descision with the first via inlet wire state for having stream to judge by inlet wire；S13, judge the first via inlet wire state that this section of bus is connected：Including collection first via feed isolating switch folding shape State, the comprehensive descision first via inlet wire state for then obtaining step S12 carries out AND operation and obtains bus is connected first The state of road inlet wire；S14, obtain according to step S10 ~ S13 method the status information per inlet wire all the way that bus is connected.
- 3. according to the method described in claim 1, it is characterised in that：The acquisition mother state includes：The folding condition of bus is gathered, another section of bus three-phase voltage value of collection is simultaneously With bus three-phase have pressure setting value compared acquisition another section of generatrix comparison result, finally will another section of generatrix comparison result and The folding condition of bus carries out AND operation and obtains mother state.
- 4. according to the method described in claim 1, it is characterised in that：The acquisition bus secondary side voltage status includes：The three-phase voltage value of bus is gathered, then by bus three-phase voltage value The secondary side voltage status for obtaining this bus is compared without pressure setting value with bus three-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710386767.6A CN107329027B (en) | 2017-05-26 | 2017-05-26 | Double-bus prepared auto restart TV broken string method of discrimination suitable for underloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710386767.6A CN107329027B (en) | 2017-05-26 | 2017-05-26 | Double-bus prepared auto restart TV broken string method of discrimination suitable for underloading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107329027A true CN107329027A (en) | 2017-11-07 |
| CN107329027B CN107329027B (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710386767.6A Expired - Fee Related CN107329027B (en) | 2017-05-26 | 2017-05-26 | Double-bus prepared auto restart TV broken string method of discrimination suitable for underloading |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765049A (en) * | 2021-08-11 | 2021-12-07 | 国网浙江省电力有限公司绍兴供电公司 | Spare power automatic switching misoperation prevention device suitable for PT primary side disconnection in light load state |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2349001C1 (en) * | 2008-03-05 | 2009-03-10 | Владимир Иванович Винокуров | Testing method for current protection of automatic switch |
| CN102095951A (en) * | 2010-11-25 | 2011-06-15 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for checking automatic switching mode of low-pressure side section switch |
| CN104167808A (en) * | 2014-08-15 | 2014-11-26 | 广州供电局有限公司 | Automatic 220kV spare power switching method |
| CN105375611A (en) * | 2015-11-19 | 2016-03-02 | 内蒙古电力勘测设计院有限责任公司 | Automatic bus transfer equipment and method applicable to double-bus connection |
-
2017
- 2017-05-26 CN CN201710386767.6A patent/CN107329027B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2349001C1 (en) * | 2008-03-05 | 2009-03-10 | Владимир Иванович Винокуров | Testing method for current protection of automatic switch |
| CN102095951A (en) * | 2010-11-25 | 2011-06-15 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for checking automatic switching mode of low-pressure side section switch |
| CN104167808A (en) * | 2014-08-15 | 2014-11-26 | 广州供电局有限公司 | Automatic 220kV spare power switching method |
| CN105375611A (en) * | 2015-11-19 | 2016-03-02 | 内蒙古电力勘测设计院有限责任公司 | Automatic bus transfer equipment and method applicable to double-bus connection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765049A (en) * | 2021-08-11 | 2021-12-07 | 国网浙江省电力有限公司绍兴供电公司 | Spare power automatic switching misoperation prevention device suitable for PT primary side disconnection in light load state |
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| Publication number | Publication date |
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| CN107329027B (en) | 2019-08-27 |
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Granted publication date: 20190827 Termination date: 20210526 |