CN111313383A - Method for judging validity of distribution line protection configuration - Google Patents
Method for judging validity of distribution line protection configuration Download PDFInfo
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- CN111313383A CN111313383A CN202010106296.0A CN202010106296A CN111313383A CN 111313383 A CN111313383 A CN 111313383A CN 202010106296 A CN202010106296 A CN 202010106296A CN 111313383 A CN111313383 A CN 111313383A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
The invention discloses a method for judging the effectiveness of distribution line protection configuration, which mainly comprises the following steps: 1) acquiring distribution transformer power failure information of a distribution line, and judging whether the power failure is maintenance power failure or fault tripping power failure according to the power failure information; 2) automatically forming the power supply attribution relation between the switch and the distribution transformer reflected by the power failure; 3) if the fault is tripped and the power is off, operation and maintenance personnel are prompted to search for the fault, and the fault position is filled into the system; 4) the fault position and the power supply attribution relation of the switch and the distribution transformer are integrated, whether the protection action of the fault tripping and power failure is reasonable and effective or not is judged, and the result is stored; the invention solves the technical problem of post-evaluation of the effectiveness of the protection configuration of the distribution line, can realize automatic judgment of the effectiveness of the protection configuration, and improves the judgment efficiency and the line intelligence level.
Description
Technical Field
The invention relates to the technical field of network protection of distribution lines, in particular to a method for judging the effectiveness of distribution line protection configuration.
Background
At present, a large number of circuit breaker switches with protection functions are arranged on a 10kV distribution line in a power system, but most of the circuit breaker switches are in a local protection state and are not brought into an automation system like a main network switch, so that the on-off state of the switches cannot be judged remotely, and whether the switch protection action is reasonable or not cannot be judged.
The matching of each switch of the distribution line and the orderly tripping of each switch in the case of a fault have important effects on reducing the fault power failure range and improving the line power supply reliability, but the power distribution network is developed whether the hierarchical protection configuration is configured in place or not and whether the hierarchical protection configuration has an effective matching relation or not, because most of the tripping actions and the switching-on and switching-off states of the switches cannot be remotely monitored, the action information of each switch cannot be obtained through a background, and whether the matching of each switch is reasonable or not is more difficult to judge; if each line is checked one by one through the protection setting fixed value, the workload is large, the efficiency is low, and the checking accuracy is not high due to the complex structure of the distribution network line, multiple interference factors of line parameters, large variation and the like.
In the power system, although a breaker switch on a distribution line is not incorporated into a remote monitoring system, almost all running conditions of a distribution transformer can be remotely monitored, and power failure information can be formed in the background in real time when the distribution transformer has power failure; when the switch on the line is tripped, the distribution transformer on the load side of the switch is inevitably powered off.
Disclosure of Invention
In order to solve the above defects in the prior art, the present invention provides a method for determining validity of distribution line protection configuration.
In order to solve the technical problems, the invention adopts the following technical scheme: a method for judging the effectiveness of distribution line protection configuration is characterized by comprising the following steps:
1) acquiring distribution transformer power failure information of a distribution line, and judging whether the power failure is maintenance power failure or fault tripping power failure according to the power failure information;
2) automatically forming the power supply attribution relationship between the switch and the distribution transformer reflected by the power failure, checking and updating the power supply attribution relationship between the switch and the distribution transformer of the whole line;
3) if the fault is tripped and the power is off, operation and maintenance personnel are prompted to search for the fault, and the fault position is filled into the system;
4) the fault position and the power supply attribution relation of the switch and the distribution transformer are integrated, whether the protection action of the fault tripping and power failure is reasonable and effective or not is judged, and the result is stored;
5) returning to the first step, and continuously detecting the power failure information of the distribution transformer of the line;
6) if the protection action of the fault trip power failure is not reasonable and effective, the protection configuration of the line needs to be adjusted, and early warning information is sent out.
Further, in step 1), the distribution transformer power failure information is distribution transformer outage information automatically uploaded by a distribution transformer monitoring system and received in a power grid management and control system, and each piece of distribution transformer outage information is a data structure and includes four contents: the line of the distribution transformer, the power failure time of the distribution transformer, the name of the distribution transformer and the capacity of the distribution transformer, and the outage information of the distribution transformer i is recorded as SiIf so, the shutdown information SiThe method comprises the line to which the distribution transformer belongs, the power failure time of the distribution transformer, the name of the distribution transformer and the capacity of the distribution transformer;
the three information of the line to which the distribution transformer belongs, the name of the distribution transformer and the capacity of the distribution transformer exist in a power grid management and control system, the information corresponding to the power failure distribution transformer is automatically matched, and the power failure time of the distribution transformer is marked by the system of the power failure of the distribution transformer;
after acquiring the distribution transformer power failure information, firstly analyzing the distribution transformer power failure information SiIn the distribution transformer belonged line, all distribution transformer power failure information with the same distribution transformer belonged line is classified into the same type to form a power failure distribution transformer group of the same line, which is marked as Pb，PbAll distribution transformers corresponding to the power failure information are supplied with power by the same distribution line, and the power failure information of each distribution transformer is used as the power failure distribution transformer group PbAn element of (1); re-analysis of PbIf the power failure time of n distribution transformers is within the time period delta t, the n distribution transformers form a new distribution transformer group, which is called a simultaneous power failure distribution transformer group and is marked as Pt；
The time limit of the distribution transformer power failure is not less than the time delay of the distribution transformer power failure information from the distribution transformer system to the background, and generally the time limit is less than 3 min;
the power failure type is judged after 24 hours of power failure time, and the judgment method is that the distribution group P is distributed according to the power failure at the same timetThe distribution transformer blackout time of each element in the system is searched, whether a work plan or a work ticket for maintenance blackout exists in the line 2 hours before and after the same time is searched, and if the work plan or the work ticket exists, the current blackout is the maintenance blackout; if not, the power failure is the fault tripping power failure.
Further, the method for determining the power supply attribution relationship between the switch and the distribution transformer in the step 2) comprises the following steps:
a) if the power failure is caused by the shutdown of the outgoing switch of a certain line, the tripping or maintenance shutdown information of the outgoing switch can be obtained in the power grid management and control system, the shutdown of the outgoing switch causes the simultaneous power failure of all distribution transformers of the line, and at the moment, the simultaneous power failure distribution transformer group P is determined according to the method in the step 1)tChecking all the distribution transformation of the medium elements and the lines if P istThe distribution name of each element in the circuit is in one-to-one correspondence with the distribution belonging to the circuit, and then the distribution information of the circuit is kept unchanged; if PtThe distribution transformer names in the power grid management and control system are not in one-to-one correspondence with the distribution transformers belonging to the line, and then the distribution transformer names are carried out according to the line distribution transformer information in the power grid management and control systemChecking and updating PtAdding the distribution transformation information corresponding to the elements which do not belong to the line into the distribution transformation of the line, and deleting the distribution transformation without power failure in the distribution transformation contained in the line;
b) if the power failure is not caused by the outage of the outgoing switches of the line, the simultaneous power failure distribution group PtAnalyzing the number n of the distribution transformer power failure; if the number of distribution transformers in the simultaneous power failure is less than 5, namely n is less than 5, neglecting the power failure event and not analyzing; if the number of distribution transformers with simultaneous power failure is 5 or more, namely n is more than or equal to 5, the n distribution transformers with simultaneous power failure at this time are recorded as a switch distribution transformer group, if the power failure type is maintenance power failure, the distribution transformer group corresponds to a maintenance switch and is recorded as KJi(ii) a If the power failure type is fault tripping power failure, the distribution transformer group corresponds to a protection switch, and is marked as KBi(ii) a Storing the corresponding relation between the power failure distribution transformer group and the switch in the power grid management and control system; because the switch with the protection function can also be used for maintenance power failure, the maintenance switch can also be a protection switch, and the same distribution transformer can belong to a plurality of switch distribution transformer groups.
Further, in step 3), if the power failure event is judged to be a fault trip power failure, operation and maintenance personnel is prompted to input fault point position information, the fault point position information input mode is positioned by distribution transformers, the operation and maintenance personnel can only select the distribution transformer name with the closest distance to the fault point position in the power grid management and control system, and the system automatically lists all the distribution transformers on the line into alternative information.
Further, in the step 4), after the fault position and the power supply attribution relation of the switch and the distribution transformer are integrated, whether the protection action of the fault tripping and power failure is reasonable and effective or not is judged, and a result is stored;
based on the information, whether the protection action of the fault tripping power failure is reasonable and effective can be judged, and the judgment method comprises the following steps:
recording the protection switch corresponding to the power failure distribution transformer group while the fault tripping and the power failure are recorded as KBKAnd the distribution change closest to the fault point position is recorded as SkThen S iskApparently belong to KBKIf S iskBelonging only to outgoing switches KCAnd a protective switch KBKJudging that the tripping operation is reasonable based on the existing data, and not sending out early warning;
if S iskExcept for the outlet switch KCAnd a protective switch KBKAlso belongs to another 1 protection switches, and is marked as KBK1Then count the protection switch KBKAnd KBK1Number of distribution transformers NBKAnd NBK1Comparison of NBKAnd NBK1Size, if NBK＜NBK1Judging that the tripping operation is reasonable based on the existing data, and not sending out early warning; if N is presentBK＞NBK1If the line protection switch is not in the override trip state, judging that the override trip condition exists in the trip based on the existing data, and sending out an early warning that the override trip risk exists in the line subordinate protection switch, wherein the protection configuration is unreasonable;
if S iskExcept for the outlet switch KCAnd a protective switch KBKAnd m (m is more than or equal to 2) other protection switches marked as KB1、KB2、…、KBmIf the number of the downstream switch grades is too large, the early warning is sent, that part of the switch protection functions are suggested to exit is given, and if a certain switch protection K is givenBjAfter the function exits, the switch K needs to be deleted in the power grid management and control systemBjAnd its corresponding transformation information.
Further, the existing protection switch of a certain line can be obtained through data accumulated in power failure events of all times, the total distribution and transformation capacity contained in each switch is counted through calculation, if the total distribution and transformation capacity of a certain switch reaches 90% of the total capacity of the outgoing line switch, the switch is unreasonable in setting position for the second-stage switch of the line, and an early warning is given, namely that the setting position of a lower-stage switch closest to the outgoing line switch is unreasonable, the fixed value is recommended to be moved to the load side and readjusted; if a certain switch moves, the switch and the corresponding distribution transformation information thereof need to be deleted in the power grid management and control system.
Compared with the prior art, the method for judging the effectiveness of the protection configuration of the distribution line provided by the invention fully utilizes the distribution transformer power failure information of a distribution transformer power failure monitoring system, integrates all power failure information to carry out big data analysis, obtains the switch setting condition and the corresponding power supply relation with the distribution transformer, and can judge whether the action tripping of each switch is reasonable and judge the rationality of the protection configuration of the whole distribution line by combining the information of the found fault point position of the fault power failure, the distribution transformer state under the influence of the reclosing and the like.
The judging method for the effectiveness of the protection configuration of the distribution line, provided by the invention, solves the technical problem of post-evaluation of the effectiveness of the protection configuration of the distribution line, can realize automatic judgment of the effectiveness of the protection configuration, improve the judging efficiency and the line intelligentization level, guide operation and maintenance personnel to accurately judge whether the protection configuration is reasonable, take targeted measures in time and improve the effectiveness of the protection configuration of the line.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic diagram of a line A structure according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a state change of the a line according to an embodiment of the invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, the present invention provides a method for determining validity of protection configuration of a distribution line, which mainly includes the following steps:
1) acquiring distribution transformer power failure information of a distribution line, and judging whether the power failure is maintenance power failure or fault tripping power failure according to the power failure information;
2) automatically forming the power supply attribution relationship between the switch and the distribution transformer reflected by the power failure, checking and updating the power supply attribution relationship between the switch and the distribution transformer of the whole line;
3) if the fault is tripped and the power is off, operation and maintenance personnel are prompted to search for the fault, and the fault position is filled into the system;
4) the fault position and the power supply attribution relation of the switch and the distribution transformer are integrated, whether the protection action of the fault tripping and power failure is reasonable and effective or not is judged, and the result is stored;
5) returning to the first step, and continuously detecting the power failure information of the distribution transformer of the line;
6) if the protection action of the fault trip power failure is not reasonable and effective, the protection configuration of the line needs to be adjusted, and early warning information is sent out.
According to the above correction, please refer to fig. 2, the topology structure of the distribution line a, the outgoing switch of the line is KCFive switches K are also arranged on the circuit1～K5There are 40 distribution transformers, each distribution transformer being distributed on the line as shown in fig. 2.
Please refer to fig. 3, which is directed to this circuit; if a power failure event begins to occur at a certain time t, the position of the fault point is in the distribution transformer S25Nearby, the switch tripped is K1。
At this time, the system first acquires the power failure information, and if the system acquires 50 pieces of distribution and transformation power failure information within 3min of time t, the lines to which the distribution and transformation corresponding to the 50 pieces of distribution and transformation power failure information belong are compared, and 22 pieces of distribution and transformation (namely, distribution and transformation S in the figure) are found out9～S30) The distribution and transformation power failure information of the 22 distribution and transformation belongs to the same line A, and forms a power failure distribution and transformation group P of the same linebAnd because the power failure is within 3min, a simultaneous power failure distribution transformer group P is formedt. After 24 hours of the time t, in the power grid management and control system, a maintenance power failure plan or a work ticket on the line A is automatically inquired, and no relevant information is found, so that the power failure system is judged to be in fault trip power failure at the time.
Distribution group P due to simultaneous power failuretThe number n of the inner elements is 22>5, the 22 distribution transformers which are simultaneously powered off form a switch distribution transformer group marked as K1Prompting the operation and maintenance personnel to input fault point information, carrying out fault inspection on the operation and maintenance personnel on site, finding the distance between the fault points and distributing the transformer S25Recently, this information is fed back in the system.
If K in the system2And K3If no over-trip occurs, K is not formed in the power grid management and control system2And K3A switch distribution group corresponding to two switches, at this time, a distribution S25Belonging only to outgoing switches KCAnd a protective switch K1And based on the existing data, judging that the tripping operation is reasonable, and not sending out early warning.
If K is before2When the over-trip occurs, the system forms a switch distribution group K2Then, the transformation is S25Except for belonging to outlet switches KCAnd a protective switch K1Also belongs to another 1 protective switch K2And the protection switch K tripped this time1A distribution number 22 greater than the protection switch K2The distribution transformer number 17 judges that the trip has the override trip condition based on the existing data, the protection configuration is unreasonable, and an early warning is sent to warn that the override trip risk exists on the lower-level protection switch of the line.
If K is before2And K3When the over-trip occurs, the system forms a switch distribution group K2And K3Then, the transformation is S25Except for belonging to outlet switches KCAnd a protective switch K1Also belong to another 2 protection switches K2And K3And then, sending out an early warning that the grading number of the downstream switches is excessive and the part of switch protection functions is recommended to quit.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the patent and protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A method for judging the effectiveness of distribution line protection configuration is characterized by comprising the following steps:
1) acquiring distribution transformer power failure information of a distribution line, and judging whether the power failure is maintenance power failure or fault tripping power failure according to the power failure information;
2) automatically forming the power supply attribution relationship between the switch and the distribution transformer reflected by the power failure, checking and updating the power supply attribution relationship between the switch and the distribution transformer of the whole line;
3) if the fault is tripped and the power is off, operation and maintenance personnel are prompted to search for the fault, and the fault position is filled into the system;
4) the fault position and the power supply attribution relation of the switch and the distribution transformer are integrated, whether the protection action of the fault tripping and power failure is reasonable and effective or not is judged, and the result is stored;
5) returning to the first step, and continuously detecting the power failure information of the distribution transformer of the line;
6) if the protection action of the fault trip power failure is not reasonable and effective, the protection configuration of the line needs to be adjusted, and early warning information is sent out.
2. The method of claim 1 for determining the validity of the distribution line protection configuration, wherein: in step 1), the distribution transformer power failure information is distribution transformer outage information automatically uploaded by a distribution transformer monitoring system and received in a power grid management and control system, and each piece of distribution transformer outage information is of a data structure and comprises four contents: the line of the distribution transformer, the power failure time of the distribution transformer, the name of the distribution transformer and the capacity of the distribution transformer, and the outage information of the distribution transformer i is recorded as SiIf so, the shutdown information SiThe method comprises the line to which the distribution transformer belongs, the power failure time of the distribution transformer, the name of the distribution transformer and the capacity of the distribution transformer;
the three information of the line to which the distribution transformer belongs, the name of the distribution transformer and the capacity of the distribution transformer exist in a power grid management and control system, the information corresponding to the power failure distribution transformer is automatically matched, and the power failure time of the distribution transformer is marked by the system of the power failure of the distribution transformer;
after acquiring the distribution transformer power failure information, firstly analyzing the distribution transformer power failure information SiIn the distribution transformer belonged line, all distribution transformer power failure information with the same distribution transformer belonged line is classified into the same type to form a power failure distribution transformer group of the same line, which is marked as Pb，PbAll distribution transformers corresponding to the power failure information are supplied with power by the same distribution line, and the power failure information of each distribution transformer is used as the power failure distribution transformer group PbAn element of (1); re-analysis of PbIf the power failure time of n distribution transformers is within the time period delta t, the n distribution transformers form a new distribution transformer group, which is called a simultaneous power failure distribution transformer group and is marked as Pt；
The time limit of the distribution transformer power failure is not less than the time delay of the distribution transformer power failure information from the distribution transformer system to the background, and generally the time limit is less than 3 min;
the power failure type is judged after 24 hours of power failure time, and the judgment method is that the distribution group P is distributed according to the power failure at the same timetThe distribution transformer blackout time of each element in the system is searched, whether a work plan or a work ticket for maintenance blackout exists in the line 2 hours before and after the same time is searched, and if the work plan or the work ticket exists, the current blackout is the maintenance blackout; if not, the power failure is the fault tripping power failure.
3. The method of claim 1 for determining the validity of the distribution line protection configuration, wherein: the method for determining the power supply attribution relationship between the switch and the distribution transformer in the step 2) comprises the following steps:
a) if the power failure is caused by the shutdown of the outgoing switch of a certain line, the tripping or maintenance shutdown information of the outgoing switch can be obtained in the power grid management and control system, the shutdown of the outgoing switch causes the simultaneous power failure of all distribution transformers of the line, and at the moment, the simultaneous power failure distribution transformer group P is determined according to the method in the step 1)tChecking all the distribution transformation of the medium elements and the lines if P istThe distribution name of each element in the circuit is in one-to-one correspondence with the distribution belonging to the circuit, and then the distribution information of the circuit is kept unchanged; if PtIf the distribution transformer name in the system is not in one-to-one correspondence with the distribution transformer belonging to the line, checking and updating are carried out according to the line distribution transformer information in the power grid management and control system, and P is updatedtAdding the distribution transformation information corresponding to the elements which do not belong to the line into the distribution transformation of the line, and deleting the distribution transformation without power failure in the distribution transformation contained in the line;
b) if the power failure is not caused by the outage of the outgoing switches of the line, the simultaneous power failure distribution group PtAnalyzing the number n of the distribution transformer power failure; if the number of distribution transformers in the simultaneous power failure is less than 5, namely n is less than 5, neglecting the power failure event and not analyzing; if the number of distribution transformers with simultaneous power failure is 5 or more, namely n is more than or equal to 5, the n distribution transformers with simultaneous power failure at this time are recorded as a switch distribution transformer group, and if the power failure type is maintenance power failure, the distribution transformer group corresponds to a maintenance switchIs marked as KJi(ii) a If the power failure type is fault tripping power failure, the distribution transformer group corresponds to a protection switch, and is marked as KBi(ii) a Storing the corresponding relation between the power failure distribution transformer group and the switch in the power grid management and control system; because the switch with the protection function can also be used for maintenance power failure, the maintenance switch can also be a protection switch, and the same distribution transformer can belong to a plurality of switch distribution transformer groups.
4. The method of claim 1 for determining the validity of the distribution line protection configuration, wherein: in step 3), if the power failure event is judged to be fault tripping power failure, operation and maintenance personnel is prompted to input fault point position information, the fault point position information input mode is positioned by distribution transformers, the operation and maintenance personnel can only select the distribution transformer name with the closest distance to the fault point position in a power grid management and control system, and the system automatically lists all the distribution transformers on the line into alternative information.
5. The method of claim 1 for determining the validity of the distribution line protection configuration, wherein: in the step 4), after the fault position and the power supply attribution relation of the switch and the distribution transformer are synthesized, whether the protection action of the fault tripping and power failure is reasonable and effective or not is judged, and the result is stored;
based on the information, whether the protection action of the fault tripping power failure is reasonable and effective can be judged, and the judgment method comprises the following steps:
recording the protection switch corresponding to the power failure distribution transformer group while the fault tripping and the power failure are recorded as KBKAnd the distribution change closest to the fault point position is recorded as SkThen S iskApparently belong to KBKIf S iskBelonging only to outgoing switches KCAnd a protective switch KBKJudging that the tripping operation is reasonable based on the existing data, and not sending out early warning;
if S iskExcept for the outlet switch KCAnd a protective switch KBKAlso belongs to another 1 protection switches, and is marked as KBK1Then count the protection switch KBKAnd KBK1Number of distribution transformers NBKAnd NBK1Comparison of NBKAnd NBK1Size, if NBK＜NBK1Judging that the tripping operation is reasonable based on the existing data, and not sending out early warning; if N is presentBK＞NBK1If the line protection switch is not in the override trip state, judging that the override trip condition exists in the trip based on the existing data, and sending out an early warning that the override trip risk exists in the line subordinate protection switch, wherein the protection configuration is unreasonable;
if S iskExcept for the outlet switch KCAnd a protective switch KBKAnd m (m is more than or equal to 2) other protection switches marked as KB1、KB2、…、KBmIf the number of the downstream switch grades is too large, the early warning is sent, that part of the switch protection functions are suggested to exit is given, and if a certain switch protection K is givenBjAfter the function exits, the switch K needs to be deleted in the power grid management and control systemBjAnd its corresponding transformation information.
6. The method of claim 1 for determining the validity of the distribution line protection configuration, wherein: the existing protection switch of a certain line can be obtained through data accumulated in power failure events of all times, the total distribution transformer capacity contained in each switch is calculated and counted, if the total distribution transformer capacity of a certain switch reaches 90% of the total capacity of an outgoing switch, the switch is unreasonable in the setting position of a second-stage switch of the line, and an early warning is given, namely that the setting position of a lower-stage switch closest to the outgoing switch is unreasonable, the lower-stage switch is recommended to be moved to the load side and the fixed value is readjusted; if a certain switch moves, the switch and the corresponding distribution transformation information thereof need to be deleted in the power grid management and control system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112766636A (en) * | 2020-12-23 | 2021-05-07 | 国网河南省电力公司电力科学研究院 | Distribution transformer power failure judgment method based on electric quantity information acquired by power consumption information acquisition terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105260843A (en) * | 2015-10-16 | 2016-01-20 | 国网甘肃省电力公司天水供电公司 | Power supply stoppage information analyzing system |
| CN106532695A (en) * | 2016-12-21 | 2017-03-22 | 国网浙江省电力公司电力科学研究院 | Real-time analysis method for power supply reliability of 10KV distribution network |
| CN108539736A (en) * | 2018-04-26 | 2018-09-14 | 广州供电局有限公司 | Power-off event analysis method, system and computer equipment based on multi-source data |
| CN110165638A (en) * | 2019-03-13 | 2019-08-23 | 国网江西省电力有限公司电力科学研究院 | One kind being based on the smallest distribution line two class protection Optimal Configuration Method of power failure capacity |
-
2020
- 2020-02-21 CN CN202010106296.0A patent/CN111313383B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105260843A (en) * | 2015-10-16 | 2016-01-20 | 国网甘肃省电力公司天水供电公司 | Power supply stoppage information analyzing system |
| CN106532695A (en) * | 2016-12-21 | 2017-03-22 | 国网浙江省电力公司电力科学研究院 | Real-time analysis method for power supply reliability of 10KV distribution network |
| CN108539736A (en) * | 2018-04-26 | 2018-09-14 | 广州供电局有限公司 | Power-off event analysis method, system and computer equipment based on multi-source data |
| CN110165638A (en) * | 2019-03-13 | 2019-08-23 | 国网江西省电力有限公司电力科学研究院 | One kind being based on the smallest distribution line two class protection Optimal Configuration Method of power failure capacity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112766636A (en) * | 2020-12-23 | 2021-05-07 | 国网河南省电力公司电力科学研究院 | Distribution transformer power failure judgment method based on electric quantity information acquired by power consumption information acquisition terminal |
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| CN111313383B (en) | 2022-06-14 |
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