CN108226838A - A kind of method realized protection supervisory equipment precision and automatically corrected - Google Patents
A kind of method realized protection supervisory equipment precision and automatically corrected Download PDFInfo
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- CN108226838A CN108226838A CN201711213224.0A CN201711213224A CN108226838A CN 108226838 A CN108226838 A CN 108226838A CN 201711213224 A CN201711213224 A CN 201711213224A CN 108226838 A CN108226838 A CN 108226838A
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- supervisory equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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Abstract
The invention discloses a kind of method realized protection supervisory equipment precision and automatically corrected, including：Each channel voltage current type of configuration exchange plug-in unit and its a reference value, generate configuration file and download in protection supervisory equipment；After protection supervisory equipment starts, apply the analog quantity corresponding to a reference value to each channel that protection supervisory equipment uses by relay-protection tester；Operating personnel perform automatic precision corrective command by protection supervisory equipment menu, and the CPU in protection supervisory equipment carries out accuracy correction calculating and stores each channel quality coefficient being calculated.Voltage/current amount is applied using exchange plug-in unit of the relay-protection tester to protection supervisory equipment; the method automatically corrected by protection supervisory equipment realization precision; the process that device manufacturer participates in correction is eliminated, enables engineering site operating personnel convenience, the accuracy correction for being efficiently completed exchange plug-in unit.
Description
Technical field
The invention belongs to Relay Protection Technology in Power System fields, and in particular to a kind of realization protection supervisory equipment precision is certainly
The method of dynamic correction.
Background technology
The exchange plug-in unit of protection supervisory equipment certainly exists certain error, needs in advance to use device in engineer application
Exchange plug-in unit carry out accuracy correction, the quality coefficient of exchange each channel of plug-in unit is obtained, according to the essence of each channel when device is run
Degree coefficient is modified actual sample value.At present exchange plug-in unit generally by producer before manufacture self-correction and by each channel essence
It spends coefficient to preserve in a device, field adjustable and operation phase no longer change.When device exchange plug-in unit is unsatisfactory for demand (as inserted
Part is abnormal) when needing replacing, each channel quality coefficient originally will be no longer applicable in, and need manufacturer again slotting to exchange at this time
The precision of part is corrected and presents the result to engineering site, and site operation personnel adjusts further according to new channel quality coefficient
Corresponding parameter, the process that this device manufacturer correction, site operation personnel adjust considerably increase producer and operating maintenance
The maintenance cost and maintenance time of personnel, causes the waste of human resources.Engineering site is facilitated to operate this requires realization is a kind of
Automatically correct exchange plug-in unit precision method, reduce management and maintenance cost, improve efficiency.
The Chinese invention patent of Patent No. CN201410626332.0 proposes a kind of analog input formula combining unit
The method of accuracy correction, but this method relies on the debugging instrument of host computer test case and specified interface, before dispatching from the factory suitable for device
It uses, engineering site does not apply to.
Invention content
In view of the above-mentioned problems, the present invention proposes a kind of method realized protection supervisory equipment precision and automatically corrected, Neng Goushi
Existing engineering site operating personnel are convenient, are efficiently completed the accuracy correction of exchange plug-in unit.
It realizes above-mentioned technical purpose, reaches above-mentioned technique effect, the invention is realized by the following technical scheme：
A kind of method realized protection supervisory equipment precision and automatically corrected, includes the following steps：
(1) each channel voltage current type of configuration exchange plug-in unit and its a reference value, generate configuration file and download to protection
In measure and control device；
(2) after protection supervisory equipment starts, each of plug-in unit is exchanged to protection supervisory equipment by relay-protection tester
Channel applies analog quantity；
(3) operating personnel perform automatic precision corrective command by protection supervisory equipment, and the CPU of protection supervisory equipment is carried out
Accuracy correction calculates, and stores each channel quality coefficient of exchange plug-in unit being calculated, when being run for protection supervisory equipment
Compensation is modified to sampled value, realizes that protection supervisory equipment precision automatically corrects.
Further, each channel voltage current type in the step (1) and its a reference value are according to protection supervisory equipment
The exchange package types of actual use are configured.
Further, each channel voltage current type and its a reference value are configured using offline mode in the step (1).
Further, a reference value of each channel can be configured by configuration tool or by execute-in-place in the step (1)
Personnel are directly set in the touch control display of protection supervisory equipment.
Further, in the step (2) type for the analog quantity that the opposite each channel of relay-protection tester applies with it is right
The type for answering channel is identical, and the value of the analog quantity applied is equal with a reference value of corresponding channel.
Further, the step (3) is specially：The mould that exchange plug-in unit acquisition relay-protection tester applies in each channel
Data, are transmitted to the CPU of protection supervisory equipment by analog quantity after filtered processing, CPU is filtered the analog data received
After do plausibility check, if verification pass through, quality coefficient is calculated according to channel voltage current type and its a reference value, protect
There are in protection supervisory equipment；If verification do not pass through, on the touch control display of protection supervisory equipment prompting verification failure and
Specific failure channel, checks the channel of correction failure, then re-executes correction, until verification passes through, and according to
Quality coefficient is calculated in channel type and its a reference value.
Further, the verification in the step (3) refers to：Reasonability judgement is carried out to data, if sampled value is less than
It is abnormal then to assert that data exist for given threshold.
Further, the quality coefficient in the step (3) refers to：The ratio of sampled value and a reference value.
Beneficial effects of the present invention：
The present invention provides a kind of methods realized protection supervisory equipment precision and automatically corrected, and scene is made to replace exchange plug-in unit
It is participated in afterwards without device manufacturer and operating maintenance personnel inputs each channel quality coefficient one by one, need to only surveyed using relay protection
Instrument is tried, all channel precision that can realize exchange plug-in unit by menu operation automatically correct, and operating method is simple, flexible, real
With, efficiently.
Description of the drawings
Fig. 1 is protection supervisory equipment precision auto-correction method flow diagram proposed by the invention.
Fig. 2 is that user exchanges plug-in card configuration file generated with downloading schematic diagram.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention provides a kind of method realized protection supervisory equipment precision and automatically corrected, including walking as follows
Suddenly：
(1) each channel voltage current type of plug-in unit is exchanged by configuration tool off-line arrangement and its a reference value, generation is matched
It puts file and downloads in protection supervisory equipment；
As shown in Fig. 2, in a kind of specific embodiment of the present invention, user is by tool software, according to protection observing and controlling
Device exchange plug-in unit type its each channel is configured, each channel may be voltage channel or current channel, Mei Getong
An a reference value is configured in road, which can be configured according to device actual conditions, such as can be configured to secondary rated value.Tool is soft
Configuration information is generated in a configuration file by part, which downloads to protection supervisory equipment CPU card for its parsing；
If the channel type (voltage/current) of the exchange plug-in unit of protection supervisory equipment is constant, only a reference value needs to change, then can pass through guarantor
The a reference value to channel of shield measure and control device touch control display is adjusted.Slave plate in Fig. 2 refers to：In addition to power panel and
Other boards except CPU board, such as dsp board, AC sampling plate (exchange plug-in unit) etc..
(2) after protection supervisory equipment starts, Field Force (commissioning staff or service personnel) passes through relay-protection tester
The corresponding analog quantity of a reference value, i.e. relay-protection tester pair are applied to each channel that the exchange plug-in unit of protection supervisory equipment uses
The type of the analog quantity applied to each channel is with the type of corresponding channel identical, and the value and corresponding channel of the analog quantity applied
A reference value is equal；
(3) operating personnel perform automatic precision corrective command by protection supervisory equipment menu, and protection supervisory equipment CPU is inserted
Part carries out accuracy correction calculating and stores each channel quality coefficient (ratio of sampled value and a reference value) being calculated, for protecting
Compensation is modified to sampled value during shield measure and control device operation, realizes that protection supervisory equipment precision automatically corrects；
After relay-protection tester, which is stablized, to be exported, operating personnel are performed " certainly by the liquid crystal menu of protection supervisory equipment
Dynamic accuracy correction order ", the accuracy correction that protection supervisory equipment will carry out each channel automatically.Wherein, exchange plug-in unit acquisition relay
Data are transmitted to CPU card, CPU card is to receiving by the analog quantity that protection tester applies in each channel after filtered processing
Analog data be filtered after do plausibility check, if verification pass through, calculated according to channel type and its a reference value
Go out quality coefficient, preserve in a device；If the analog quantity applied exist it is abnormal (such as：The virtual value of sampled value is less than standard value
50% etc.), then verify failure, the channel is calculated and skipped without quality coefficient at this time, continues to correct next channel, together
When on touch control display prompting verification failure and corresponding channel position, after the completion of all channels correct, the automatic high-ranking officers of CPU
The quality coefficient just obtained is stored in protection supervisory equipment, is used when sampling and calculate for analog quantity, i.e., according to this precision system
Number, is modified and compensates to real-time sampling value running behind device.
(4) according to correction result prompting, the channel of correction failure is checked, then re-executes correction, until school
It tests and passes through, and quality coefficient (ratio of sampled value and a reference value) is calculated according to channel type and its a reference value, for protecting
Compensation is modified to sampled value during shield measure and control device operation, realizes that protection supervisory equipment precision automatically corrects.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
- A kind of 1. method realized protection supervisory equipment precision and automatically corrected, which is characterized in that include the following steps：(1) each channel voltage current type of configuration exchange plug-in unit and its a reference value, generate configuration file and download to protection observing and controlling In device；(2) after protection supervisory equipment starts, by relay-protection tester to each channel of the exchange plug-in unit of protection supervisory equipment Apply analog quantity；(3) operating personnel perform automatic precision corrective command by protection supervisory equipment, and the CPU of protection supervisory equipment carries out precision Correction calculates, and stores each channel quality coefficient of exchange plug-in unit being calculated, to adopting when being run for protection supervisory equipment Sample value is modified compensation, realizes that protection supervisory equipment precision automatically corrects.
- 2. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 1, it is characterised in that：Institute State the exchange plug-in unit class that each channel voltage current type and its a reference value in step (1) are actually used according to protection supervisory equipment Type is configured.
- 3. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 1 or 2, feature exist In：Each channel voltage current type and its a reference value are configured using offline mode in the step (1).
- 4. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 3, it is characterised in that：Institute Stating a reference value of each channel in step (1) can be configured by configuration tool or by site operation personnel in protection supervisory equipment Touch control display in directly set.
- 5. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 1, it is characterised in that：Institute It is identical with the type of corresponding channel to state the type of analog quantity that the opposite each channel of relay-protection tester in step (2) applies, and The value of the analog quantity of application is equal with a reference value of corresponding channel.
- 6. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 1, it is characterised in that：Institute Stating step (3) is specially：The analog quantity that exchange plug-in unit acquisition relay-protection tester applies in each channel, after filtered processing Data are transmitted to the CPU of protection supervisory equipment, CPU does plausibility check after being filtered to the analog data received, if school It tests and passes through, then quality coefficient is calculated according to channel voltage current type and its a reference value, be stored in protection supervisory equipment； If verification does not pass through, prompting verification failure and the channel that specifically fails on the touch control display of protection supervisory equipment, to school The channel just to fail is checked, then re-executes correction, until verification passes through, and according to channel type and its a reference value meter Calculation obtains quality coefficient.
- 7. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 6, it is characterised in that：Institute The verification stated in step (3) refers to：Reasonability judgement is carried out to data, if sampled value is less than given threshold, assert data There are exceptions.
- 8. a kind of method realized protection supervisory equipment precision and automatically corrected according to claim 6, it is characterised in that：Institute The quality coefficient stated in step (3) refers to：The ratio of sampled value and a reference value.
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| CN201711213224.0A CN108226838B (en) | 2017-11-28 | 2017-11-28 | Method for realizing precision automatic correction of protection measurement and control device |
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| CN201711213224.0A CN108226838B (en) | 2017-11-28 | 2017-11-28 | Method for realizing precision automatic correction of protection measurement and control device |
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| CN108226838B CN108226838B (en) | 2020-07-28 |
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Cited By (3)
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| CN111044964A (en) * | 2019-12-31 | 2020-04-21 | 惠州市蓝微电子有限公司 | Voltage and current reference debugging method and device |
| CN111740882A (en) * | 2020-07-29 | 2020-10-02 | 江苏金智科技股份有限公司 | Method for automatically checking configuration file of line protection measurement and control device |
| CN113283068A (en) * | 2021-05-18 | 2021-08-20 | 天津凯发电气股份有限公司 | Method for improving alternating current sampling precision and reliability of relay protection device |
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| CN113283068A (en) * | 2021-05-18 | 2021-08-20 | 天津凯发电气股份有限公司 | Method for improving alternating current sampling precision and reliability of relay protection device |
| CN113283068B (en) * | 2021-05-18 | 2023-05-16 | 天津凯发电气股份有限公司 | Method for improving alternating current sampling precision and reliability of relay protection device |
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| CN108226838B (en) | 2020-07-28 |
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