CN104410070A - Method for controlling frequent signal emission of microcomputer resonance eliminating device - Google Patents
Method for controlling frequent signal emission of microcomputer resonance eliminating device Download PDFInfo
- Publication number
- CN104410070A CN104410070A CN201410794125.6A CN201410794125A CN104410070A CN 104410070 A CN104410070 A CN 104410070A CN 201410794125 A CN201410794125 A CN 201410794125A CN 104410070 A CN104410070 A CN 104410070A
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- CN
- China
- Prior art keywords
- resonance
- microcomputer
- signal
- broadening
- ferro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a method for controlling frequent signal emission of a microcomputer resonance eliminating device, and aims to solve the problem that a microcomputer resonance eliminating action emits a signal frequently due to the fact that resonance phenomena exist in a system intermittently for a long time. The method is characterized by comprising the following steps: a broadening delay loop is added to a 'resonance eliminating action' and 'resonance device common alarm' signal output loop of the microcomputer resonance eliminating device and can perform setting as required in 0-10 seconds, and 'resonance eliminating action' and 'resonance device common alarm' signals are emitted after a time period set by the broadening delay loop. Whether signals are emitted or not as required is controlled, and the problem that emission and non-emission of signals cannot be controlled is solved, monitoring and dispatching workers can have a normal work environment, the power supply reliability is improved, and safe and steady operation of a power grid is guaranteed.
Description
Technical field
The present invention relates to a kind of electric power system safety automation field, relate to a kind of microcomputer resonance cancellation element that controls or rather and carry out the method that ferro resonance eliminates the signalling of action time-frequency.
Background technology
There is interstitial iron magnetic resonance phenomenon in electric power system low voltage electric network part, after existing microcomputer resonance cancellation element is installed at the scene, also with low voltage electric network ferro resonance situation, carries out corresponding ferro resonance elimination.Generally, the interstitial iron magnetic resonance that low voltage electric network part exists, adds the time that microcomputer resonance cancellation element ferro resonance eliminates action, all completes between 100-900mS.When carrying out ferro resonance and eliminating action, send out " resonance elimination action " and " the total alarm of resonance device " signal simultaneously.Because intermittence long-term in system exists resonance phenomena, microcomputer resonance cancellation element, when magnetic resonance eliminates action, causes microcomputer resonance cancellation element frequently to send out this signal, the normal work of impact monitoring and dispatcher.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art provides a kind of microcomputer resonance cancellation element that controls to take place frequently the method for signal, and in resolution system, long-term intermittence exists resonance phenomena, causes microcomputer resonance to eliminate to act frequently to send out the problem of this signal.
Method of the present invention, utilize original microcomputer resonance cancellation element, namely by detecting transformer substation bus equipment voltage transformer (TV) opening voltage (Uo), differentiate whether bus equipment voltage transformer (TV) opening voltage (Uo) surmounts, voltage transformer (TV) opening voltage (Uo) surmounts, opening voltage (Uo) surmounts then differentiate whether meet ferro resonance condition, do not meet ferro resonance condition, return and continue transformer substation bus equipment voltage transformer (TV) opening voltage (Uo), meet ferro resonance condition and carry out ferro resonance elimination, and send out " resonance elimination action " and " the total alarm of resonance device " signal immediately, it is characterized in that sending out " resonance elimination action " and " the total alarm of resonance device " signal output loop at microcomputer resonance cancellation element increases a broadening timing circuit, described broadening timing circuit can be adjusted as requested within 0-10 second, " resonance elimination action " and " the total alarm of resonance device " signal is sent out again after the time of broadening delayed setting.
Described broadening timing circuit is the time relay, counter.
As shown from the above technical solution, whether the present invention can the sending of control signal as required, and efficiently solving can not the difficult problem whether sent of control signal; Monitoring and dispatcher can be made to have a normal operational environment, improve power supply reliability, ensure that power network safety operation.
Accompanying drawing explanation
Accompanying drawing is schematic flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in drawings, utilize original microcomputer resonance cancellation element principle, namely by detecting transformer substation bus equipment voltage transformer (TV) opening voltage (Uo), differentiate whether bus equipment voltage transformer (TV) opening voltage (Uo) surmounts, voltage transformer (TV) opening voltage (Uo) is if surmounted, then differentiate and whether meet ferro resonance condition, do not meet ferro resonance condition, return and continue to detect transformer substation bus equipment voltage transformer (TV) opening voltage (Uo).If meet ferro resonance condition to carry out ferro resonance elimination, in ferro resonance recognition software flow process, before sending out " resonance elimination action " and " the total alarm of resonance device " signal, send out " resonance elimination action " and " the total alarm of resonance device " signal output loop at microcomputer resonance cancellation element and increase a broadening timing circuit, this broadening timing circuit can be adjusted as requested within 0-10 second, after the time of broadening delayed setting, send out " resonance elimination action " and " the total alarm of resonance device " signal again, namely ferro resonance is reported to the police.
Described broadening timing circuit is the time relay, counter.
Claims (2)
1. one kind controls microcomputer resonance cancellation element and to take place frequently the method for signal, utilize original microcomputer resonance cancellation element, namely by detecting transformer substation bus equipment voltage transformer (TV) opening voltage (Uo), differentiate whether bus equipment voltage transformer (TV) opening voltage (Uo) surmounts, voltage transformer (TV) opening voltage (Uo) surmounts, opening voltage (Uo) surmounts then differentiate whether meet ferro resonance condition, do not meet ferro resonance condition, return and continue transformer substation bus equipment voltage transformer (TV) opening voltage (Uo), meet ferro resonance condition and carry out ferro resonance elimination, and send out " resonance elimination action " and " the total alarm of resonance device " signal immediately, it is characterized in that sending out " resonance elimination action " and " the total alarm of resonance device " signal output loop at microcomputer resonance cancellation element increases a broadening timing circuit, described broadening timing circuit can be adjusted as requested within 0-10 second, " resonance elimination action " and " the total alarm of resonance device " signal is sent out again after the time of broadening delayed setting.
2. the as claimed in claim 1 microcomputer resonance cancellation element that controls takes place frequently the method for signal, it is characterized in that: described broadening timing circuit is the time relay, counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410794125.6A CN104410070A (en) | 2014-12-21 | 2014-12-21 | Method for controlling frequent signal emission of microcomputer resonance eliminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410794125.6A CN104410070A (en) | 2014-12-21 | 2014-12-21 | Method for controlling frequent signal emission of microcomputer resonance eliminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104410070A true CN104410070A (en) | 2015-03-11 |
Family
ID=52647675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410794125.6A Pending CN104410070A (en) | 2014-12-21 | 2014-12-21 | Method for controlling frequent signal emission of microcomputer resonance eliminating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104410070A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5900723A (en) * | 1995-11-30 | 1999-05-04 | Siemens Power Transmission & Distribution, L.L.C. | Voltage based VAR compensation system |
| CN2702502Y (en) * | 2004-03-04 | 2005-05-25 | 保定浪拜迪电气股份有限公司 | A ferromagnetic resonance diagnostic eliminator of voltage transformer |
| CN101996762A (en) * | 2009-08-14 | 2011-03-30 | 安徽省电力公司宿州供电公司 | Circuit transformer ferromagnetic resonance preventing device |
| CN202127233U (en) * | 2011-06-16 | 2012-01-25 | 安徽国科电力设备有限公司 | Power grid fault measuring and controlling device |
-
2014
- 2014-12-21 CN CN201410794125.6A patent/CN104410070A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5900723A (en) * | 1995-11-30 | 1999-05-04 | Siemens Power Transmission & Distribution, L.L.C. | Voltage based VAR compensation system |
| CN2702502Y (en) * | 2004-03-04 | 2005-05-25 | 保定浪拜迪电气股份有限公司 | A ferromagnetic resonance diagnostic eliminator of voltage transformer |
| CN101996762A (en) * | 2009-08-14 | 2011-03-30 | 安徽省电力公司宿州供电公司 | Circuit transformer ferromagnetic resonance preventing device |
| CN202127233U (en) * | 2011-06-16 | 2012-01-25 | 安徽国科电力设备有限公司 | Power grid fault measuring and controlling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |