CN103390028B - A kind of protection definite value check method for novel telecontrol machine - Google Patents
A kind of protection definite value check method for novel telecontrol machine Download PDFInfo
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- CN103390028B CN103390028B CN201310259056.4A CN201310259056A CN103390028B CN 103390028 B CN103390028 B CN 103390028B CN 201310259056 A CN201310259056 A CN 201310259056A CN 103390028 B CN103390028 B CN 103390028B
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Abstract
The present invention relates to a kind of protection definite value check method for novel telecontrol machine, the protection definite value inventory of each protection equipment of dispatching down distributing is stored the basis checked in data base as definite value by novel telecontrol machine, novel telecontrol machine periodically calls the point information of each protection equipment, and point information calling come up compares with the point information on the protection definite value inventory of storage in data base, if point information changes, then send point information change warning signal, and more new database, protection definite value is carried out concordance check, degree of accuracy is checked, selectivity is checked and sensitivity is checked.Solve existing protection definite value check method and check not comprehensive, the problem of poor reliability.
Description
Technical field
The present invention relates to a kind of protection definite value check method for novel telecontrol machine.
Background technology
Relay protection constant value is closely related with the safe and stable operation of system; in recent years; all kinds of relay protection setting calculation softwares the most all have employed method and the software engineering of present stage maturation; provide a preferable management of computing platform for relay protection professional, improve automatization and the management level of relay protection setting calculation work
.But in actual applications; there is also many disadvantages; relay protection application demand can not be met well; it is necessary to build the area power grid relay protection setting value check method of a set of perfect in shape and function; instruct relay protection setting calculation and definite value check work, improve accuracy and the reliability of relay protection setting value.
Conventional relay protection setting check method considers deficiency to power system operating mode and fault type.Make the setting valve calculated can not can meet the requirements such as reliability, selectivity, susceptiveness in actual applications under the various methods of operation and accident condition.
Along with power grid construction accelerates, area power grid rack and power supply have large variation every year, thus in causing area power grid, the equivalent impedance of each transformer substation system changes greatly, and the reliability making protection definite value at different levels is the most impacted.Relay protection setting calculation personnel must be checked by the protection definite values at different levels that equivalent impedance influence of change is bigger in the whole network; and routine relay protection setting calculation software lays particular emphasis on fixed value adjusting and protection definite value bill compilation and management; setting valve check to existing protection is wanting in consideration and means disappearance, and work efficiency is low.
Summary of the invention
It is an object of the invention to provide a kind of protection definite value check method for novel telecontrol machine, check not comprehensive, the problem of poor reliability in order to solve existing protection definite value check method.
For achieving the above object, the solution of the present invention is: a kind of protection definite value check method for novel telecontrol machine, the protection definite value inventory of each protection equipment of dispatching down distributing is stored the basis checked in data base as definite value by novel telecontrol machine, novel telecontrol machine periodically calls the point information of each protection equipment, and point information calling come up compares with the point information on the protection definite value inventory of storage in data base, if point information changes, then send point information change warning signal, and more new database, protection definite value is carried out concordance check, degree of accuracy is checked, selectivity is checked and sensitivity is checked.
Data base includes up-to-date protection definite value tablet menu, historical protective definite value tablet menu, up-to-date value data table, history value data table, to specifically comprising the following steps that protection definite value is checked
(1) the protection definite value inventory content of the protection definite value inventory in described up-to-date protection definite value tablet menu with dispatching down distributing is compared; if content is inconsistent; then the protection definite value inventory of storage in up-to-date protection definite value tablet menu is stored in historical protective definite value tablet menu, the protection definite value inventory issued is stored in this up-to-date protection definite value tablet menu；
(2) value data in described up-to-date value data table is compared with the value data in up-to-date protection definite value tablet menu; if data content is inconsistent; then the data in up-to-date value data table are stored in history value data table, the protection value data in up-to-date protection definite value tablet menu is write in up-to-date value data table；
(3) the protection definite value that novel telecontrol machine is called is compared with the protection definite value in up-to-date value data table; if data content is inconsistent; then the protection value data in up-to-date value data table is stored in history value data table, and the protection definite value of this calling is stored in up-to-date value data table.
The beneficial effect that the present invention reaches: the protection definite value of calling is compared by the present invention with the protection definite value of storage in data base; when data content is inconsistent; just the protection definite value of calling is stored as up-to-date protection definite value; in terms of the protection concordance of definite value, selectivity, degree of accuracy and sensitivity four, protection definite value is carried out omnibearing check; improve the reasonability of relay protection scheme; improve reliability and the accuracy of setting valve; improve the comprehensive automation management level of electric network protection definite value
Ensure that the safe and stable operation of the electrical network overall situation.
Accompanying drawing explanation
Fig. 1 is that the present invention protects definite value check method configuration diagram.
Detailed description of the invention
The present invention will be further described in detail below in conjunction with the accompanying drawings.
The protection definite value check method of the present invention is, by novel telecontrol machine, the protection definite value inventory of each protection equipment of dispatching down distributing is stored the basis checked as definite value in data base; novel telecontrol machine periodically calls the point information of each protection equipment; and point information calling come up compares with the point information on the protection definite value inventory of storage in data base; if point information changes; then send point information change warning signal; and more new database, protection definite value is carried out concordance check, degree of accuracy check, selectivity check and sensitivity and checks.
As it is shown in figure 1, data base includes: A table, B table, C table and D table, A table is up-to-date protection definite value tablet menu, for storing the protection definite value inventory of dispatching down distributing；B table is historical protective definite value tablet menu, the protection definite value inventory used before storage；C table is up-to-date value data table, the value data that the protection definite value for storage with calling compares；D table is history value data table, is used for backing up the value data that the protection definite value with calling used before compares.
During program initialization, definite value is checked module and is first loaded the protection definite value inventory from dispatching down distributing, by modular converter, the protection definite value inventory of different-format is converted into the form of internal unity, then judge database table A has existed protection definite value inventory the most, if there is, then the protection definite value inventory of dispatching down distributing is compared with the content in Table A, if the protection definite value inventory of dispatching down distributing is compared with the protection definite value inventory of storage in Table A, data content changes, then data write table B in Table A will be used for carrying out the backup of data, and by data write table A of the up-to-date protection definite value inventory of dispatching down distributing, store as up-to-date protection definite value.
Now the value data in database table C needs to compare with the protection value data in Table A; if it find that the data in table C are inconsistent with the data content in Table A; then need to use backup as data in data write table D in table C; finally using in up-to-date protection value data write table C in Table A as up-to-date value data, compare with the data come up of telecontrol communication machine calling in the future.
When protecting definite value in novel telecontrol machine calling; protection value data calling come up compares with the data of storage in database table C; if it find that data change; then send change message; when issue confirm after message using in data write table D in table C as the backup of last time data; then, in value data write into Databasce table C calling come up, store as up-to-date protection value data.
1. check for protection definite value concordance:
Concordance checks the concordance in the definite value that concordance is checked and telecontrol communication machine is called and data base being primarily directed between the protection definite value inventory of dispatching down distributing and the protection definite value inventory used before between the definite value of storage.
2. check for protection definite value degree of accuracy:
In running; novel telecontrol machine is called the protection definite value come up; compare with the value data of storage in data base; if data change; then need to send a warning message; exit CL Compare Logic, directly by all satisfied protection definite value update all in data base, to ensure that protection definite value meets precise requirements.
When degree of accuracy is checked; the comparison of protection value data uses the mode being converted into character string, needs the phase closing precision according to different types of data to change: a. floating number format transformation reserves 3 arithmetic point into %8.3f(during value data is converted into character string)；B. integer number conversion form is %d.
3. for the check of protection definite value sensitivity:
Sensitivity for relay protection constant value checks mainly system according to the check principle set, analyze whether its sensitivity meets requirement, such as, the overcurrent protection of all outlets of transformer station to be checked the most still has 1.5 times of sensitivity to line end fault, system is first according to all systems and the line parameter circuit value of transformer station, select that circuit of line impedance maximum as object of study, calculate and to meet this line end fault time there is 1.5 times of sensitivity, the constraints that overcurrent protection definite value must is fulfilled for, whether all outlet overcurrent protection definite values then checking transformer station meet this constraints.
Protection definite value telecontrol communication machine calling come up compares with the protection definite value of storage in data base; the protection specifying user carries out sensitivity check; if the sensitivity protection value data that calling comes up changes; then send warning information; and the data in more new database, to ensure that protection definite value meets system sensitivity requirement.
4. optionally check for protection definite value:
Selectivity for protection definite value checks the cooperation primarily focused between the relay protection of inspection the superior and the subordinate; adjusting between the superior and the subordinate's relay protection; the principle coordinated step by step should be followed; meet selective requirement; i.e. when next stage circuit or element fault; the relay protection setting value of faulty line or element must sensitivity and on movement time all relay protection setting values with upper level circuit or element cooperate, excise fault during to ensure grid collapses selectively.
Protection definite value telecontrol communication machine calling come up compares with the protection definite value of storage in data base; protection definite value is carried out selectivity check; when in original data base storage meet the protection definite value that selectivity requires change time; the protection value data that calling comes up can change compared with the data of storage in data base; now need to send a warning message; and the data in more new database, to ensure that protection definite value meets selectivity requirement.
Claims (1)
1. the protection definite value check method for novel telecontrol machine, it is characterized in that, the protection definite value inventory of each protection equipment of dispatching down distributing is stored the basis checked in data base as definite value by novel telecontrol machine, novel telecontrol machine periodically calls the point information of each protection equipment, and point information calling come up compares with the point information on the protection definite value inventory of storage in data base, if point information changes, the point information of the most more new database, thus protection definite value is carried out concordance check, degree of accuracy is checked, selectivity is checked and sensitivity is checked；
Data base includes up-to-date protection definite value tablet menu, historical protective definite value tablet menu, up-to-date value data table, history value data table, to specifically comprising the following steps that protection definite value is checked
(1) the protection definite value inventory content of the protection definite value inventory in described up-to-date protection definite value tablet menu with dispatching down distributing is compared; if content is inconsistent; then the protection definite value inventory of storage in up-to-date protection definite value tablet menu is stored in historical protective definite value tablet menu, the protection definite value inventory issued is stored in this up-to-date protection definite value tablet menu；
(2) value data in described up-to-date value data table is compared with the value data in up-to-date protection definite value tablet menu; if data content is inconsistent; then the data in up-to-date value data table are stored in history value data table, the protection value data in up-to-date protection definite value tablet menu is write in up-to-date value data table；
(3) the protection definite value that novel telecontrol machine is called is compared with the protection definite value in up-to-date value data table; if data content is inconsistent; then the protection value data in up-to-date value data table is stored in history value data table, and the protection definite value of this calling is stored in up-to-date value data table.
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| CN201310259056.4A CN103390028B (en) | 2013-06-26 | 2013-06-26 | A kind of protection definite value check method for novel telecontrol machine |
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| CN103390028B true CN103390028B (en) | 2016-09-14 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104716740A (en) * | 2013-12-17 | 2015-06-17 | 国家电网公司 | Fixed value calibration method, device and system for relay protection device |
| CN104578012B (en) * | 2015-01-30 | 2017-08-22 | 国网北京经济技术研究院 | A kind of protection definite value Safety Margin method based on sensitivity analysis |
| CN106295919A (en) * | 2015-05-13 | 2017-01-04 | 国网辽宁省电力有限公司丹东供电公司 | A kind of distribution transformer protection definite value automatic adjusting interface system |
| CN105262220B (en) * | 2015-10-30 | 2019-01-22 | 福建奥通迈胜电力科技有限公司 | Substation's intelligence shutdown telecontrol information check method and system |
| CN106296450A (en) * | 2016-08-05 | 2017-01-04 | 广东电网有限责任公司电力调度控制中心 | The fixed value modification method and system of self checking mechanism |
| CN106532660B (en) * | 2016-10-31 | 2018-09-04 | 云南电网有限责任公司 | A kind of main station system, remote system and the control method of relay fixed value modification |
| CN106451377B (en) * | 2016-11-02 | 2018-06-29 | 国家电网公司 | Relay protection device constant value area distant place handover security check method |
| CN107769170B (en) * | 2017-10-10 | 2019-12-06 | 广东电网有限责任公司电力调度控制中心 | Checking method for remote decoupling and setting of main backup protection fixed value |
| CN114123503B (en) * | 2021-11-23 | 2024-03-05 | 国网江苏省电力有限公司检修分公司 | Transformer substation site fixed value checking method |
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Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee after: Xuji Group Co., Ltd. Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Co-patentee after: Xuji Electric Co., Ltd. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee before: Xuji Group Co., Ltd. Patentee before: Electrical Power Research Institute of Guangdong Power Grid Corporation Co-patentee before: Xuji Electric Co., Ltd. |
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