CN102403715A - Data matching method for electric power system - Google Patents
Data matching method for electric power system Download PDFInfo
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- CN102403715A CN102403715A CN2011103027869A CN201110302786A CN102403715A CN 102403715 A CN102403715 A CN 102403715A CN 2011103027869 A CN2011103027869 A CN 2011103027869A CN 201110302786 A CN201110302786 A CN 201110302786A CN 102403715 A CN102403715 A CN 102403715A
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Abstract
The invention discloses a data matching method for an electric power system. The data matching method comprises the following steps of: selecting a plant station from an on-line checking system; scanning all plant stations in an energy management system; using a normalization distance editing algorithm to judge whether an plant station is existed and matched with the plant station of the on-line checking system; selecting an internal device from the plant station of the on-line checking system and trimming the name of the internal device if the plant station is existed and matched with the plant station of the on-line checking system; scanning internal devices of all plant stations in the energy management system to judge whether the name of an internal device is existed and matched with that of the internal device of the on-line checking system; adding one to the matched device number if the name of the internal device is existed; judging whether all internal devices of the on-line checking system are scanned over, and then judging whether the percentage of the matched device number to the number of all internal devices of the on-line checking system is bigger than the first threshold value if the scanning is over; and indicating that the plant station of the on-line checking system is matched with the internal devices of the on-line checking system successfully if the percentage is bigger than the first threshold value.
Description
Technical field
The invention belongs to the relay protection of power system technical field, be specifically related to a kind of data matching method that is used for electric power system.
Background technology
Realization is the important prerequisite that realizes the online nucleus correcting system of electric power system with the interface of EMS, is directly connected to the feasibility and the accuracy of online check.Importance in view of interface problem; It is independently become a process of mating according to data name; As long as the data name of online nucleus correcting system and EMS is mated, can obtain the required real time information of online nucleus correcting system, carry out various on-line decisions or control.
At present, people generally adopt editing distance to portray the similarity degree that matees between two character strings.But directly utilize traditional editing distance algorithm to carry out the coupling of station of factory in online nucleus correcting system and the EMS and internal unit thereof, have following 2 problems:
(1) the editing distance algorithm is not considered the influence of the length of character string to matching result own, similarity degree that can't the accurate description character string.For example, " the last five small stream power plant ", " station, Shiyan " and " the last five small stream " editing distance are 3, but obviously " the last five small stream power plant " is more similar with " the last five small stream ";
(2) the editing distance algorithm can't be distinguished the numbering abbreviation of transformer and generator in online nucleus correcting system and the EMS.For example, the equal called after of transformer " #1 change " in the online nucleus correcting system in the different factories station can cause the mistake coupling.
Summary of the invention
The objective of the invention is to propose a kind of data matching method that is used for electric power system; It can improve online nucleus correcting system and matching rate and precision ratio that EMS factory station and internal unit thereof mate, improves the performance of online nucleus correcting system and EMS interface.
Technical scheme of the present invention is following:
A kind of data matching method that is used for electric power system; May further comprise the steps: from online nucleus correcting system, select factory station; All factory stations in the traversal EMS; Adopt normalization editing distance algorithm to judge whether to exist the factory station and the factory station of online nucleus correcting system to mate,, then select an internal unit from the factory station of online nucleus correcting system if exist the factory station and the factory station of online nucleus correcting system to mate; And the title of internal unit put in order; The internal unit at all factories station in the traversal EMS is complementary with the title that judges whether the to exist internal unit title with the internal unit of online nucleus correcting system, is complementary as if the title of the internal unit of title that has internal unit and online nucleus correcting system; Then the matching unit number adds 1; All internal units of judging online nucleus correcting system whether all traversal finish, if all internal units of online nucleus correcting system all travel through finish, whether the percentage of all internal unit numbers of then judging matching unit number and online nucleus correcting system greater than first threshold; If the percentage of all internal unit numbers of matching unit number and online nucleus correcting system, is then represented the factory station of online nucleus correcting system and the coupling success of internal unit thereof greater than first threshold.
Data matching method of the present invention also comprises step: whether all factories station of judging online nucleus correcting system has all traveled through and has finished; If all factory stations of online nucleus correcting system not traversal finish; Then choose next factory station of online nucleus correcting system; All factories that repeat to travel through in the EMS stand, and adopt normalization editing distance algorithm to judge whether the step that exists the factory station and the factory station of online nucleus correcting system to mate.
Data matching method of the present invention also comprises step: if do not exist the factory station and the factory station of online nucleus correcting system to mate, then represent the factory station of online nucleus correcting system and the coupling failure of internal unit thereof.
Data matching method of the present invention also comprises step: if the title of the title that does not have an internal unit and the internal unit of online nucleus correcting system is complementary, then changes all internal units of judging online nucleus correcting system and whether all travel through the step that finishes.
Data matching method of the present invention also comprises step: do not finish if all internal units of online nucleus correcting system travel through; Then select next internal unit from the factory station of online nucleus correcting system; And the title of internal unit put in order; Repeat to travel through in the EMS internal unit at all factories stations then, the step that is complementary with the title of the internal unit of the title that judges whether to exist internal unit and online nucleus correcting system.
Data matching method of the present invention also comprises step: if the percentage of all internal unit numbers of matching unit number and online nucleus correcting system, is then represented the factory station of online nucleus correcting system and the coupling failure of internal unit thereof less than first threshold.
All factory stations in the traversal EMS; Adopt normalization editing distance algorithm to judge whether to exist the factory station and the step of factory's station coupling of online nucleus correcting system to comprise: the editing distance between the factory of calculating factory station and online nucleus correcting system stands; Whether judge
greater than second threshold value; Wherein m is the character length of EMS factory station name; N is the character length of online nucleus correcting system factory station name; Max{m; N} representes to get m; Higher value among the n; D (i; J) be the editing distance between EMS factory station and the online nucleus correcting system factory station, if
greater than second threshold value, the coupling between then stand with online nucleus correcting system factory in EMS factory station is successful; If
be less than or equal to second threshold value, then fail with the coupling between the online nucleus correcting system factory station in EMS factory station.
If having the factory station and the factory station of online nucleus correcting system matees; Then select an internal unit from the factory station of online nucleus correcting system; And the step that the title of internal unit is put in order comprises: read the device numbering of the internal unit of online nucleus correcting system, revise the title of internal unit according to the mode of " EMS factory station name+#.+ device numbering+internal unit type ".
The invention has the advantages that: can improve the matching rate and the precision ratio of online nucleus correcting system and EMS factory station and internal unit coupling thereof, and can improve the performance of online nucleus correcting system and EMS interface.
Description of drawings
Fig. 1 is used for the flow chart of the data matching method of electric power system for the present invention.
Embodiment
As shown in Figure 1, the data matching method that the present invention is used for electric power system may further comprise the steps:
(1) from online nucleus correcting system, selects a factory station;
(2) all factory stations of traversal EMS adopt normalization editing distance algorithm to judge whether to exist factory's station coupling of factory station and online nucleus correcting system, if there is factory's station coupling of factory station and online nucleus correcting system, then changes step (3) over to, otherwise change step (9) over to;
(3) select an internal unit from current online nucleus correcting system factory station, and the title of this internal unit is put in order;
(4) internal unit at all factory stations in the traversal EMS;
(5) judge whether to exist the title of internal unit and current online nucleus correcting system internal unit to be complementary; If exist, then change step (6) over to, then do not change step (7) over to if do not exist;
(6) the matching unit number adds 1;
(7) judge whether all internal units travel through in the current factory of the online nucleus correcting system station and finish,, then change step (8) over to, otherwise jump to next internal unit at current factory station if all internal units have all traveled through and finish in the current factory station, and repeating step (3);
Whether the percentage of (8) judging matching unit number and the current factory of online nucleus correcting system station equipment number is greater than first threshold; If the percentage of matching unit number and the current factory of online nucleus correcting system station equipment number is not more than first threshold; Then change step (9) over to; Otherwise change step (10) over to, in this execution mode, first threshold is between 0.5 to 0.8;
(9) the online nucleus correcting system of expression current factory station and the failure of internal unit coupling thereof;
(10) the coupling success of the factory station of the online nucleus correcting system of expression and internal unit thereof;
Whether all factories station of (11) judging online nucleus correcting system has all traveled through and has finished, if all factories stations of online nucleus correcting system not traversal do not finish, then choose next factory station of online nucleus correcting system, repeating step (2) then, otherwise flow process finishes.
The detailed substep of step (2) is following:
(21) editing distance between the factory station of calculating said factory station and said online nucleus correcting system; The basic definition of editing distance is: convert online nucleus correcting system factory station name to the minimum deletion (deleting a character in online nucleus correcting system factory's station name or the EMS factory station name) that EMS factory station name needs, the number of times that inserts (in online nucleus correcting system factory's station name or EMS factory station name, inserting a character) or replacement (certain character replacement in online nucleus correcting system factory's station name or the EMS factory station name is become another character);
(22) whether judge
greater than second threshold value; Wherein m is the character length of current EMS factory station name; N is the character length of current online nucleus correcting system factory station name; Max{m, n} represent to get m, the higher value among the n; (i j) is editing distance between standing with current online nucleus correcting system factory in current EMS factory station to D; In this execution mode, second threshold value is between 0.9 to 0.95;
(23) if
greater than current second threshold value, the coupling between then current EMS factory station and the current online nucleus correcting system factory station is successfully;
(24) if
is less than or equal to said second threshold value, the coupling failure between then current EMS factory station and the current online nucleus correcting system factory station.
For example, when not adopting the normalization editing distance, " the last five small stream power plant ", " station, Shiyan " are 3 with " the last five small stream " editing distance, and matching result can't be distinguished; But after adopting the normalization editing distance, " the last five small stream power plant " and " the last five small stream " normalization editing distance are 0.5, and similarity is 0.5, and " station, Shiyan " and " the last five small stream " normalization editing distance is 1, and similarity is 0, and the above two are more similar.It is thus clear that the normalization editing distance can be described the similarity degree of character string more accurately.
The detailed substep of step (3) is following:
(31) read the device numbering of the internal unit of said online nucleus correcting system;
(32) revise the title of internal unit according to the mode of " EMS factory station name+#.+ device numbering+internal unit type ", wherein the internal unit type comprises two kinds: generator and transformer.
Referring to table 1, before arrangement, a certain the internal unit at online nucleus correcting system factory station is numbered the #3 machine, and the internal unit at the wide Li Xitongchang of energy station is numbered the northern .#3 machine that oozes, and after the arrangement, the internal unit at this online nucleus correcting system factory station is numbered the northern .#3 machine that oozes; In like manner, another internal unit at online nucleus correcting system factory station is numbered the #1 generator, and the internal unit at EMS factory station is numbered magnificent Henan .#3 machine, and after the arrangement, the internal unit at this online nucleus correcting system factory station is numbered magnificent Henan .#1 machine.
Table 1
Claims (8)
1. a data matching method that is used for electric power system is characterized in that, may further comprise the steps:
From online nucleus correcting system, select factory station;
All factory stations in the traversal EMS adopt normalization editing distance algorithm to judge whether to exist factory's station coupling of factory station and said online nucleus correcting system;
If exist the factory station and the factory station of said online nucleus correcting system to mate, then select an internal unit, and the title of said internal unit is put in order from the factory station of said online nucleus correcting system;
The internal unit at all factories station in the traversal EMS is complementary with the title of the internal unit of the title that judges whether to exist internal unit and said online nucleus correcting system;
If exist the title of internal unit of title and the said online nucleus correcting system of internal unit to be complementary, then the matching unit number adds 1;
All internal units of judging said online nucleus correcting system whether all traversal finish;
If all internal units of said online nucleus correcting system all travel through and finish, whether the percentage of all internal unit numbers of then judging said matching unit number and said online nucleus correcting system is greater than first threshold;
If the percentage of all internal unit numbers of said matching unit number and said online nucleus correcting system, is then represented the said factory station of said online nucleus correcting system and the coupling success of internal unit thereof greater than said first threshold.
2. data matching method according to claim 1 is characterized in that, also comprises step:
Whether all factories station of judging said online nucleus correcting system has all traveled through and has finished;
If all factory stations of said online nucleus correcting system not traversal finish; Then choose next factory station of online nucleus correcting system; All factories that repeat in the said traversal EMS stand, and adopt normalization editing distance algorithm to judge whether the step that exists the factory station and the factory station of said online nucleus correcting system to mate.
3. data matching method according to claim 1 is characterized in that, also comprises step:
If do not exist the factory station and the factory station of said online nucleus correcting system to mate, then represent the said factory station of said online nucleus correcting system and the coupling failure of internal unit thereof.
4. data matching method according to claim 1 is characterized in that, also comprises step:
If the title that does not have an internal unit is complementary with the title of the internal unit of said online nucleus correcting system, then changes said and judge whether all internal units of said online nucleus correcting system all travel through the step that finishes.
5. data matching method according to claim 1 is characterized in that, also comprises step:
If all internal units of said online nucleus correcting system not traversal finish; Then select next internal unit from the factory station of said online nucleus correcting system; And the title of said internal unit put in order; Repeat in the said traversal EMS internal unit at all factories stations then, the step that is complementary with the title of the internal unit of the title that judges whether to exist internal unit and said online nucleus correcting system.
6. data matching method according to claim 1 is characterized in that, also comprises step:
If the percentage of all internal unit numbers of said matching unit number and said online nucleus correcting system, is then represented the said factory station of said online nucleus correcting system and the coupling failure of internal unit thereof less than said first threshold.
7. data matching method according to claim 1 is characterized in that, all the factory stations in the said traversal EMS adopt normalization editing distance algorithm to judge whether to exist the factory station and the step of factory's station coupling of said online nucleus correcting system to comprise:
Calculate the editing distance between said factory stands and the factory of said online nucleus correcting system stands;
Whether judge
greater than second threshold value; Wherein m is the character length of said EMS factory station name; N is the character length of said online nucleus correcting system factory station name; Max{m, n} represent to get m, the higher value among the n; D (i, the editing distance between j) to be said EMS factory station with said online nucleus correcting system factory stand;
If
greater than said second threshold value, the coupling between then said EMS factory station and the said online nucleus correcting system factory station successfully;
If
be less than or equal to said second threshold value, fail with the coupling between the said online nucleus correcting system factory station in then said EMS factory station.
8. data matching method according to claim 7; It is characterized in that; Said if exist the factory station and the factory station of said online nucleus correcting system to mate, then select an internal unit, and the step that the title of said internal unit is put in order comprises from the factory station of said online nucleus correcting system:
Read the device numbering of the internal unit of said online nucleus correcting system;
Revise the title of said internal unit according to the mode of " the said device numbering of the said EMS station name+#.+ of factory+said internal unit type ".
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Cited By (6)
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| CN103050931A (en) * | 2012-12-12 | 2013-04-17 | 湖北省电力公司 | Power system hierarchical data matching and relay protection setting merging method |
| CN104036373A (en) * | 2014-07-04 | 2014-09-10 | 云南电力调度控制中心 | Power dispatching equipment main data management method based on data center |
| CN105184482A (en) * | 2015-09-06 | 2015-12-23 | 国网山东省电力公司电力科学研究院 | Transformer machine account data verification system and method thereof |
| CN105335899A (en) * | 2015-11-11 | 2016-02-17 | 国网山东省电力公司德州供电公司 | Intelligent power line naming system |
| CN107016066A (en) * | 2017-03-17 | 2017-08-04 | 南方电网科学研究院有限责任公司 | Measuring point matching process and device in a kind of electric network model modeling process |
| CN109815374A (en) * | 2018-12-27 | 2019-05-28 | 普华讯光（北京）科技有限公司 | Low-voltage distribution network platform region title similarity matching methods and matching system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103050931A (en) * | 2012-12-12 | 2013-04-17 | 湖北省电力公司 | Power system hierarchical data matching and relay protection setting merging method |
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| CN107016066A (en) * | 2017-03-17 | 2017-08-04 | 南方电网科学研究院有限责任公司 | Measuring point matching process and device in a kind of electric network model modeling process |
| CN109815374A (en) * | 2018-12-27 | 2019-05-28 | 普华讯光（北京）科技有限公司 | Low-voltage distribution network platform region title similarity matching methods and matching system |
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