CN113471927B - Switch classification-based power distribution network self-adaptive setting method and system - Google Patents
Switch classification-based power distribution network self-adaptive setting method and system Download PDFInfo
- Publication number
- CN113471927B CN113471927B CN202010236612.6A CN202010236612A CN113471927B CN 113471927 B CN113471927 B CN 113471927B CN 202010236612 A CN202010236612 A CN 202010236612A CN 113471927 B CN113471927 B CN 113471927B
- Authority
- CN
- China
- Prior art keywords
- switch
- setting
- protection
- distribution network
- topology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004364 calculation method Methods 0.000 claims abstract description 43
- 238000013507 mapping Methods 0.000 claims abstract description 16
- 230000003044 adaptive effect Effects 0.000 claims description 23
- 230000008569 process Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
-
- 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
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a self-adaptive setting method and a self-adaptive setting system for a power distribution network based on switch grading, wherein the method comprises the following steps: setting a setting principle library according to the number of switch stages; marking a switch configured with a protection function; acquiring switching information in the distribution network automation system, and judging whether a switch is shifted or not according to the switching information; if the switch is shifted, mapping the switch information corresponding to the shifted switch to network topology; analyzing the network topology by taking a 10kV outgoing line switch as a primary switch, traversing the network topology downwards, and reclassifying the switch with the protection function; based on the switch reclassifying result, automatically matching the setting principle in the setting principle library; and performing fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data. The invention can avoid the complexity of setting the distribution network equipment, save time level difference, and simultaneously consider the selectivity and the rapidity of protection, thereby ensuring the coordination among the protection of the multistage series power supply lines.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a self-adaptive setting method and system for a power distribution network based on switch classification.
Background
Along with the rapid development of the power distribution network, the power supply conditions of multistage series connection are increased gradually, if the multistage series connection power supply conditions are matched step by step according to a simple setting principle, the protection matching time can be prolonged without limit, the rapid fault removal for protection is quite unfavorable, and the situation that the protection cannot be matched often exists.
The conventional distribution network setting calculation method comprises the step of shortening the protection action time by setting mismatch points, but if the mismatch points are improperly selected, misoperation of protection can be caused when a line fails, so that the power failure area is enlarged, and the power supply reliability is affected.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems.
Therefore, an object of the present invention is to provide a self-adaptive tuning method for a power distribution network based on switch classification, which can avoid complexity of tuning a power distribution network device, save time level difference, and simultaneously consider selectivity and rapidity of protection, so as to ensure coordination between protection of multistage series power supply lines.
To this end, a second object of the invention is to propose a power distribution network adaptive tuning system based on switching classification.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a power distribution network adaptive tuning method based on switch classification, including the following steps: setting a setting principle library according to the number of switch stages; marking a switch configured with a protection function; acquiring switching information in the distribution network automation system, and judging whether a switch is shifted or not according to the switching information; if the switch is shifted, mapping the switch information corresponding to the shifted switch to network topology; analyzing the network topology by taking a 10kV outgoing line switch as a primary switch, traversing the network topology downwards, and reclassifying the switch with the protection function; based on the switch reclassifying result, automatically matching the setting principle in the setting principle library; and performing fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data.
In addition, the adaptive setting method of the power distribution network based on switch classification according to the embodiment of the invention can also have the following additional technical characteristics:
in some examples, the establishing a protection setting rule base according to the number of switch stages specifically includes: and forming the setting rule base according to the switch level, wherein the setting rule base comprises setting rules corresponding to switches of different levels.
In some examples, mapping the switch information corresponding to the dislocated switch to a network topology includes: when the switch state is changed from on to off, deleting the protection switch in setting and calculating the protection switch topology; when the switch state is changed from on to off, adding the protection switch in setting and calculating the topology of the protection switch; and updating the network topology of the whole-network setting calculation protection switch according to the deflection condition of each switch acquired from the automation system.
In some examples, the analyzing the network topology with the 10kV outgoing switch as a primary switch, traversing the network topology down, and reclassifying the switch with the protection function, includes: and taking the protection switch of the 10kV outgoing line as a first-stage protection switch, taking the side lower than 10kV as the searching positive direction, traversing, setting and calculating the network topology of the protection switch, taking the next-stage protection switch as a second-stage protection switch, and pushing the second-stage protection switch and taking the next-stage protection switch as a third-stage protection switch.
In some examples, the performing the constant value calculation according to the tuning principle that the number of switch stages is well matched includes: and according to the switch re-grading result, based on a setting rule base, automatically matching the setting rules of the switches of different levels to perform setting calculation on the fixed value, thereby obtaining the fixed value data of each protection switch.
According to the self-adaptive setting method of the power distribution network based on switch grading, the distribution network automation system is used for acquiring the switch deflection, automatically analyzing the topology change, grading the switch with the protection function by taking the 10kV outgoing switch of the transformer substation as a root node (primary node) on the basis of topology analysis, and carrying out self-adaptive calculation on the setting principle of automatically matching the switches with different grades on the basis of the distribution network setting rule base, so that the setting is carried out on the basis of the switch stage number when the switch deflection is carried out on the basis of the on-line switch state, the complexity of the distribution network according to equipment setting is effectively avoided, the time grade difference is saved, the selectivity and the rapidity of protection are simultaneously considered, and the coordination between the protection of the multistage serial power supply lines is ensured.
To achieve the above object, an embodiment of a second aspect of the present invention provides a power distribution network adaptive tuning system based on switch classification, including: the setting module is used for setting a setting principle library according to the number of the switch stages; the marking module is used for marking the switch configured with the protection function; the judging module is used for acquiring switching information in the distribution network automation system and judging whether a switch is shifted or not according to the switching information; the mapping module is used for mapping the switch information corresponding to the deflection switch to the network topology when the switch is deflected; the grading module is used for analyzing the network topology by taking the 10kV outgoing line switch as a primary switch, traversing the network topology downwards and grading the switch with the protection function again; the matching module is used for automatically matching the setting principle in the setting principle library based on the switch re-grading result; and the calculation module is used for carrying out fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data.
In addition, the power distribution network self-adaptive setting system based on switch classification according to the embodiment of the invention can also have the following additional technical characteristics:
in some examples, the establishing module establishes a protection setting rule base according to the number of switch stages, and specifically includes: and forming the setting rule base according to the switch level, wherein the setting rule base comprises setting rules corresponding to switches of different levels.
In some examples, the mapping module maps switch information corresponding to the dislocated switch to a network topology, including: when the switch state is changed from on to off, deleting the protection switch in setting and calculating the protection switch topology; when the switch state is changed from on to off, adding the protection switch in setting and calculating the topology of the protection switch; and updating the network topology of the whole-network setting calculation protection switch according to the deflection condition of each switch acquired from the automation system.
In some examples, the classification module analyzes the network topology with the 10kV outgoing switch as a primary switch, traverses down the network topology, reclassifies the switch with protection functionality, comprising: and taking the protection switch of the 10kV outgoing line as a first-stage protection switch, taking the side lower than 10kV as the searching positive direction, traversing, setting and calculating the network topology of the protection switch, taking the next-stage protection switch as a second-stage protection switch, and pushing the second-stage protection switch and taking the next-stage protection switch as a third-stage protection switch.
In some examples, the calculating module performs constant value calculation according to a tuning principle that the switch progression is well matched, including: and according to the switch re-grading result, based on a setting rule base, automatically matching the setting rules of the switches of different levels to perform setting calculation on the fixed value, thereby obtaining the fixed value data of each protection switch.
According to the distribution network self-adaptive setting system based on switch grading, disclosed by the embodiment of the invention, the distribution network automation system is used for acquiring the switch deflection, automatically analyzing the topology change, grading the switch configured with the protection function by taking the 10kV outgoing switch of the transformer substation as a root node (primary node) on the basis of topology analysis, and carrying out self-adaptive calculation on the setting principle of automatically matching different levels of switches on the basis of a distribution network setting rule base, so that the setting is carried out on the basis of the switch stage number when the switch deflection is carried out on the basis of the on-line switch state, the complexity of the distribution network according to equipment setting is effectively avoided, the time grade difference is saved, the selectivity and the rapidity of protection are simultaneously considered, and the coordination between the protection of the multistage serial power supply lines is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a flow chart of a method for adaptive tuning of a power distribution network based on switch classification according to one embodiment of the invention;
fig. 2 is a detailed flow diagram of a method for adaptive tuning of a power distribution network based on switch classification according to an embodiment of the present invention.
Fig. 3 is a block diagram of a power distribution network adaptive tuning system based on switch classification according to one embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes a self-adaptive setting method and a self-adaptive setting system for a power distribution network based on switch classification according to an embodiment of the invention with reference to the accompanying drawings.
Fig. 1 is a flow chart of a method for adaptive tuning of a power distribution network based on switching hierarchy according to one embodiment of the present invention. As shown in fig. 1, the adaptive tuning method for the power distribution network based on switch classification comprises the following steps:
step S1: and establishing a setting principle library according to the switching progression.
Specifically, the process of establishing the protection setting principle library according to the switch level number specifically includes: and forming a setting rule base according to the switch series, wherein the setting rule base comprises setting rules corresponding to the switches with different levels.
In a specific embodiment, a specific distribution network setting rule base is formed according to the switching progression; the tuning rule base comprises tuning rules corresponding to switches of different levels. According to experience, the configuration protection of the most three-stage line in the setting of the distribution network is realized, so that the embodiment of the invention only considers the matching condition of the three-stage protection switch.
Take phase current protection as an example:
1. time-limited quick-break protection:
(1) First-stage protection switch configuration principle:
1) The first-stage protection is set according to the recommended value of the short-circuit current level, and the default value is as follows: 2700A;
2) The first-stage protection tripping time is as follows: 0.15s;
(2) Second-stage protection switch configuration principle:
1) The second-stage protection is set according to the recommended value of the short-circuit current level, and the default value is as follows: 2400A;
2) The second-stage protection trip time is as follows by default: 0s;
(3) Third stage protection switch configuration principle:
1) And the third-stage protection switch takes a recommended value for setting, and the default value is as follows: 1000A;
2) The tripping time of the third-stage protection switch is as follows by default: 0;
2. overcurrent protection:
(1) First, second and third protection switch configuration principle:
1) Setting according to load hiding current;
2) The CT primary rated value is 400A or below, and is set according to 1.2 times of the CT primary rated value;
3) CT primary rated value is 600A and above, and is set according to primary value 720A;
4) Setting according to a primary rated current value which is not more than CT;
5) Matching with the time limit speed break value of the adjacent line;
6) The fixed value is reversely matched with the fixed-time limit overcurrent fixed value of the upper-level line;
(2) First-stage protection time constant:
1) The first-stage protection time is fixed, and the default value is as follows: 0.5s;
2) The second-stage protection time is fixed, and the default value is as follows: 0.3s;
3) Third-stage protection time fixed value, default value is: 0.3s;
3. overload section:
(1) First, second and third protection switch configuration principle:
1) Setting according to 0.9 times of a fixed value of the fixed time limit overcurrent in the protection;
2) CT primary rating 600A and above, consider the line current limit value, according to the primary value 540A setting.
Step S2: the switch provided with a protection function is marked.
Step S3: and acquiring switching information in the distribution network automation system, and judging whether a switch is shifted or not according to the switching information.
Step S4: and if the switch is shifted, mapping the switch information corresponding to the shifted switch to the network topology.
Specifically, the process of mapping the switch information corresponding to the deflection switch to the network topology includes: when the switch state is changed from on to off, deleting the protection switch in setting and calculating the protection switch topology; when the switch state is changed from on to off, adding the protection switch in setting and calculating the topology of the protection switch; and updating the network topology of the whole-network setting calculation protection switch according to the deflection condition of each switch acquired from the automation system.
Specifically, the switches with protection are marked, the deflection conditions of the switches can be obtained through the distribution network automation system, and the calculated topology is automatically updated and set according to the deflection of the switches, so that the latest topology relation is generated.
For a shifted switch, the calculated matching relationship topology needs to be set again, if the state of a certain switch with protection is changed from on to off, the protection switch needs to be deleted in the setting calculation of the protection switch topology; similarly, if a certain switch state with protection is changed from on to off, the protection switch needs to be added in the setting calculation protection switch topology, and finally, the whole network setting calculation protection switch topology is updated according to the change condition of each switch acquired from an automation system.
Step S5: and analyzing the network topology by taking the 10kV outgoing line switch as a primary switch, traversing the network topology downwards, and reclassifying the switch with the protection function.
Specifically, the process of analyzing the network topology by using the 10kV outgoing line switch as a primary switch, traversing the network topology downwards, and reclassifying the switch with the protection function comprises the following steps: and taking the protection switch of the 10kV outgoing line as a first-stage protection switch, taking the side lower than 10kV as the searching positive direction, traversing, setting and calculating the network topology of the protection switch, taking the next-stage protection switch as a second-stage protection switch, and pushing the second-stage protection switch and taking the next-stage protection switch as a third-stage protection switch.
Specifically, a 10kV outgoing switch of a transformer substation is taken as a root node (primary node), the topology is traversed, and the switch with the protection function is classified. The protection switch of the 10kV outgoing line is used as a first-stage protection switch, the search positive direction is towards the side lower than 10kV, the topology of the protection switch is calculated through traversing setting, the next-stage protection switch is a second-stage protection switch, and similarly, the next-stage protection switch is a third-stage protection switch.
Step S6: based on the switch re-classification result, the tuning principles in the tuning principles library are automatically matched.
Step S7: and performing fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data.
Specifically, the process of performing fixed value calculation according to the setting principle of well matching the switch series comprises the following steps: and according to the switch re-grading result, based on a setting rule base, automatically matching the setting rules of the switches of different levels to perform setting calculation on the fixed value, thereby obtaining the fixed value data of each protection switch.
Specifically, according to the switch grading result, based on a distribution network setting rule base, setting rules of different levels of switches are automatically matched to perform setting calculation on the setting values, so that setting value data of each protection is obtained, and the setting calculation is finished.
Therefore, the self-adaptive setting method of the power distribution network based on the switch grading aims at solving the problems that the existing power distribution network is overlong in setting matching time, easy to set by mistake and the like, provides a good processing method for self-adaptive setting of the power distribution network, can effectively solve the problem of the power distribution network based on the method, provides a new thought for self-adaptive setting of the power distribution network, and meets the application requirements of actual users.
In order to facilitate better understanding of the present invention, the adaptive tuning method for a power distribution network based on switch classification is described below by way of example with reference to the accompanying drawings and specific embodiments.
In a specific embodiment, with reference to fig. 2, the implementation steps of the adaptive setting method for a power distribution network based on switch classification are as follows:
step 1: and (5) establishing a protection setting principle library according to the switching progression.
Step 2: the switch provided with a protection function is marked.
Step 3: and acquiring switching information in the distribution network automation system, and analyzing whether the switch is shifted or not.
Step 4: if the switch is shifted, jumping to the step 5; otherwise, the process goes to step 9.
Step 5: the deflection switch information is mapped to a network topology.
Step 6: and (3) performing topology analysis, namely traversing the topology downwards by taking a 10kV outgoing line switch as a primary switch, and reclassifying the switch with the protection function.
Step 7: based on the switch grading result, the setting rules in the setting rule base are automatically matched.
Step 8: and performing fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data.
Step 9: and (5) ending.
According to the self-adaptive setting method of the power distribution network based on switch grading, the distribution network automation system is used for acquiring the switch deflection, automatically analyzing the topology change, grading the switch with the protection function by taking the 10kV outgoing switch of the transformer substation as a root node (primary node) on the basis of topology analysis, and carrying out self-adaptive calculation on the setting principle of automatically matching the switches with different grades on the basis of the distribution network setting rule base, so that the setting is carried out on the basis of the switch stage number when the switch deflection is carried out on the basis of the on-line switch state, the complexity of the distribution network according to equipment setting is effectively avoided, the time grade difference is saved, the selectivity and the rapidity of protection are simultaneously considered, and the coordination between the protection of the multistage serial power supply lines is ensured.
The further embodiment of the invention also provides a power distribution network self-adaptive setting system based on switch classification.
Fig. 3 is a block diagram of a power distribution network adaptive tuning system based on switch classification according to one embodiment of the invention. As shown in fig. 3, the adaptive tuning system 100 for a power distribution network based on switch classification includes: the system comprises a building module 110, a marking module 120, a judging module 130, a mapping module 140, a grading module 150, a matching module 160 and a calculating module 170.
Specifically, the establishing module 110 is configured to establish a tuning rule base according to the number of switch stages.
Specifically, the process of the establishing module 110 for establishing the protection setting rule base according to the number of switch stages specifically includes: and forming a setting rule base according to the switch series, wherein the setting rule base comprises setting rules corresponding to the switches with different levels.
In a specific embodiment, a specific distribution network setting rule base is formed according to the switching progression; the tuning rule base comprises tuning rules corresponding to switches of different levels. According to experience, the configuration protection of the most three-stage line in the setting of the distribution network is realized, so that the embodiment of the invention only considers the matching condition of the three-stage protection switch.
Take phase current protection as an example:
1. time-limited quick-break protection:
(1) First-stage protection switch configuration principle:
1) The first-stage protection is set according to the recommended value of the short-circuit current level, and the default value is as follows: 2700A;
2) The first-stage protection tripping time is as follows: 0.15s;
(2) Second-stage protection switch configuration principle:
1) The second-stage protection is set according to the recommended value of the short-circuit current level, and the default value is as follows: 2400A;
2) The second-stage protection trip time is as follows by default: 0s;
(3) Third stage protection switch configuration principle:
1) And the third-stage protection switch takes a recommended value for setting, and the default value is as follows: 1000A;
2) The tripping time of the third-stage protection switch is as follows by default: 0;
2. overcurrent protection:
(1) First, second and third protection switch configuration principle:
1) Setting according to load hiding current;
2) The CT primary rated value is 400A or below, and is set according to 1.2 times of the CT primary rated value;
3) CT primary rated value is 600A and above, and is set according to primary value 720A;
4) Setting according to a primary rated current value which is not more than CT;
5) Matching with the time limit speed break value of the adjacent line;
6) The fixed value is reversely matched with the fixed-time limit overcurrent fixed value of the upper-level line;
(2) First-stage protection time constant:
1) The first-stage protection time is fixed, and the default value is as follows: 0.5s;
2) The second-stage protection time is fixed, and the default value is as follows: 0.3s;
3) Third-stage protection time fixed value, default value is: 0.3s;
3. overload section:
(1) First, second and third protection switch configuration principle:
1) Setting according to 0.9 times of a fixed value of the fixed time limit overcurrent in the protection;
2) CT primary rating 600A and above, consider the line current limit value, according to the primary value 540A setting.
The marking module 120 is used to mark switches configured with protection functions.
The judging module 130 is configured to obtain switching information in the distribution network automation system, and judge whether there is a switching shift according to the switching information.
The mapping module 140 is configured to map, when the switch is shifted, switch information corresponding to the shifted switch to the network topology.
Specifically, the mapping module 140 maps the switch information corresponding to the dislocated switch to the network topology, including: when the switch state is changed from on to off, deleting the protection switch in setting and calculating the protection switch topology; when the switch state is changed from on to off, adding the protection switch in setting and calculating the topology of the protection switch; and updating the network topology of the whole-network setting calculation protection switch according to the deflection condition of each switch acquired from the automation system.
Specifically, the switches with protection are marked, the deflection conditions of the switches can be obtained through the distribution network automation system, and the calculated topology is automatically updated and set according to the deflection of the switches, so that the latest topology relation is generated.
For a shifted switch, the calculated matching relationship topology needs to be set again, if the state of a certain switch with protection is changed from on to off, the protection switch needs to be deleted in the setting calculation of the protection switch topology; similarly, if a certain switch state with protection is changed from on to off, the protection switch needs to be added in the setting calculation protection switch topology, and finally, the whole network setting calculation protection switch topology is updated according to the change condition of each switch acquired from an automation system.
The classification module 150 is configured to analyze the network topology with the 10kV outgoing switch as a primary switch, traverse the network topology downward, and re-classify the switch with the protection function.
Specifically, the classifying module 150 uses the 10kV outgoing switch as a primary switch to analyze the network topology, traverses the network topology downward, and performs a process of reclassifying the switch with the protection function, which includes: and taking the protection switch of the 10kV outgoing line as a first-stage protection switch, taking the side lower than 10kV as the searching positive direction, traversing, setting and calculating the network topology of the protection switch, taking the next-stage protection switch as a second-stage protection switch, and pushing the second-stage protection switch and taking the next-stage protection switch as a third-stage protection switch.
Specifically, a 10kV outgoing switch of a transformer substation is taken as a root node (primary node), the topology is traversed, and the switch with the protection function is classified. The protection switch of the 10kV outgoing line is used as a first-stage protection switch, the search positive direction is towards the side lower than 10kV, the topology of the protection switch is calculated through traversing setting, the next-stage protection switch is a second-stage protection switch, and similarly, the next-stage protection switch is a third-stage protection switch.
The matching module 160 is configured to automatically match the tuning principles in the tuning principles library based on the switch re-classification result.
The calculation module 170 is configured to perform fixed value calculation according to a setting principle that the switching progression is well matched, and generate new fixed value data.
Specifically, the calculating module 170 performs a constant value calculating process according to a tuning principle that the switching progression is well matched, including: and according to the switch re-grading result, based on a setting rule base, automatically matching the setting rules of the switches of different levels to perform setting calculation on the fixed value, thereby obtaining the fixed value data of each protection switch.
Specifically, according to the switch grading result, based on a distribution network setting rule base, setting rules of different levels of switches are automatically matched to perform setting calculation on the setting values, so that setting value data of each protection is obtained, and the setting calculation is finished.
Therefore, the distribution network self-adaptive setting system based on switch grading aims at solving the problems that the existing distribution network setting matching time is overlong, the distribution network is easy to set by mistake and the like, provides a good processing scheme for self-adaptive setting of the distribution network, can effectively solve the problem of distribution network based on the scheme, provides a new thought for self-adaptive setting of the distribution network, and meets the application requirements of actual users.
It should be noted that, a specific implementation manner of the adaptive tuning system of the power distribution network based on the switch classification according to the embodiment of the present invention is similar to a specific implementation manner of the adaptive tuning method of the power distribution network based on the switch classification according to the embodiment of the present invention, please refer to the description of the method section specifically, and in order to reduce redundancy, a description is omitted here.
According to the distribution network self-adaptive setting system based on switch grading, disclosed by the embodiment of the invention, the distribution network automation system is used for acquiring the switch deflection, automatically analyzing the topology change, grading the switch configured with the protection function by taking the 10kV outgoing switch of the transformer substation as a root node (primary node) on the basis of topology analysis, and carrying out self-adaptive calculation on the setting principle of automatically matching different levels of switches on the basis of a distribution network setting rule base, so that the setting is carried out on the basis of the switch stage number when the switch deflection is carried out on the basis of the on-line switch state, the complexity of the distribution network according to equipment setting is effectively avoided, the time grade difference is saved, the selectivity and the rapidity of protection are simultaneously considered, and the coordination between the protection of the multistage serial power supply lines is ensured.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The power distribution network self-adaptive setting method based on switch grading is characterized by comprising the following steps of:
setting a setting principle library according to the number of switch stages;
marking a switch configured with a protection function;
acquiring switching information in the distribution network automation system, and judging whether a switch is shifted or not according to the switching information;
if the switch is shifted, mapping the switch information corresponding to the shifted switch to network topology;
analyzing the network topology by taking a 10kV outgoing line switch as a primary switch, traversing the network topology downwards, and reclassifying the switch with the protection function;
based on the switch reclassifying result, automatically matching the setting principle in the setting principle library;
and performing fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data.
2. The adaptive tuning method of a power distribution network based on switch classification according to claim 1, wherein the establishing a protection tuning principle library according to the switch progression specifically includes:
and forming the setting principle library according to the switch level, wherein the setting principle library comprises setting principles corresponding to switches of different levels.
3. The adaptive tuning method of a power distribution network based on switch classification according to claim 1, wherein mapping the switch information corresponding to the dislocated switch to the network topology comprises:
when the switch state is changed from on to off, deleting the protection switch in setting and calculating the protection switch topology;
when the switch state is changed from on to off, adding the protection switch in setting and calculating the topology of the protection switch;
and updating the network topology of the whole-network setting calculation protection switch according to the deflection condition of each switch acquired from the automation system.
4. The adaptive tuning method of a power distribution network based on switch classification according to claim 1, wherein the analyzing the network topology by using the 10kV outgoing switch as a primary switch, traversing the network topology downward, and reclassifying the switch with the protection function comprises:
and taking the protection switch of the 10kV outgoing line as a first-stage protection switch, taking the side lower than 10kV as the searching positive direction, traversing, setting and calculating the network topology of the protection switch, taking the next-stage protection switch as a second-stage protection switch, and pushing the second-stage protection switch and taking the next-stage protection switch as a third-stage protection switch.
5. The adaptive tuning method of a power distribution network based on switch classification according to claim 1, wherein the performing the value calculation according to the tuning principle of the switch stage number matching well comprises:
and according to the switch re-grading result, based on a setting rule base, automatically matching the setting rules of the switches of different levels to perform setting calculation on the fixed value, thereby obtaining the fixed value data of each protection switch.
6. Switching classification-based power distribution network self-adaptive setting system is characterized by comprising:
the setting module is used for setting a setting principle library according to the number of the switch stages;
the marking module is used for marking the switch configured with the protection function;
the judging module is used for acquiring switching information in the distribution network automation system and judging whether a switch is shifted or not according to the switching information;
the mapping module is used for mapping the switch information corresponding to the deflection switch to the network topology when the switch is deflected;
the grading module is used for analyzing the network topology by taking the 10kV outgoing line switch as a primary switch, traversing the network topology downwards and grading the switch with the protection function again;
the matching module is used for automatically matching the setting principle in the setting principle library based on the switch re-grading result;
and the calculation module is used for carrying out fixed value calculation according to the setting principle of well matching the switch series to generate new fixed value data.
7. The adaptive tuning system of a power distribution network based on switch classification according to claim 6, wherein the establishing module establishes a protection tuning principle library according to the number of switch stages, and specifically comprises:
and forming the setting principle library according to the switch level, wherein the setting principle library comprises setting principles corresponding to switches of different levels.
8. The adaptive tuning system of a power distribution network based on switch classification according to claim 6, wherein the mapping module maps switch information corresponding to a dislocated switch to a network topology, comprising:
when the switch state is changed from on to off, deleting the protection switch in setting and calculating the protection switch topology;
when the switch state is changed from on to off, adding the protection switch in setting and calculating the topology of the protection switch;
and updating the network topology of the whole-network setting calculation protection switch according to the deflection condition of each switch acquired from the automation system.
9. The adaptive tuning system of a power distribution network based on switch classification according to claim 6, wherein the classification module analyzes a network topology with a 10kV outgoing switch as a primary switch, traverses the network topology downward, and reclassifies a switch with a protection function, comprising:
and taking the protection switch of the 10kV outgoing line as a first-stage protection switch, taking the side lower than 10kV as the searching positive direction, traversing, setting and calculating the network topology of the protection switch, taking the next-stage protection switch as a second-stage protection switch, and pushing the second-stage protection switch and taking the next-stage protection switch as a third-stage protection switch.
10. The adaptive tuning system of a power distribution network based on switch classification according to claim 6, wherein the calculating module performs a constant value calculation according to a tuning principle that the number of switch stages is well matched, and the method comprises:
and according to the switch re-grading result, based on a setting rule base, automatically matching the setting rules of the switches of different levels to perform setting calculation on the fixed value, thereby obtaining the fixed value data of each protection switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010236612.6A CN113471927B (en) | 2020-03-30 | 2020-03-30 | Switch classification-based power distribution network self-adaptive setting method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010236612.6A CN113471927B (en) | 2020-03-30 | 2020-03-30 | Switch classification-based power distribution network self-adaptive setting method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113471927A CN113471927A (en) | 2021-10-01 |
| CN113471927B true CN113471927B (en) | 2024-04-02 |
Family
ID=77864913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010236612.6A Active CN113471927B (en) | 2020-03-30 | 2020-03-30 | Switch classification-based power distribution network self-adaptive setting method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113471927B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115588961B (en) * | 2022-12-07 | 2023-02-17 | 国网浙江省电力有限公司金华供电公司 | Setting value self-adaptive setting method based on power distribution network full-model protection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244839A (en) * | 2015-10-20 | 2016-01-13 | 河南理工大学 | Petri network-based leakage protection setting calculation method for mine high-voltage power network |
| CN107565504A (en) * | 2017-09-04 | 2018-01-09 | 国网江西省电力公司电力科学研究院 | A kind of switch protection allocation list and look-up method suitable for 10kV distribution lines |
| CN110601158A (en) * | 2019-10-11 | 2019-12-20 | 国网福建省电力有限公司 | Method for online setting of distribution automation protection constant value |
| CN110808576A (en) * | 2019-11-15 | 2020-02-18 | 广州供电局有限公司 | Intelligent distributed single-phase earth fault isolation method suitable for small-current earth system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10581235B2 (en) * | 2018-02-22 | 2020-03-03 | S&C Electric Company | Method for automatically coordinating protection settings in an electric power distribution network |
-
2020
- 2020-03-30 CN CN202010236612.6A patent/CN113471927B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244839A (en) * | 2015-10-20 | 2016-01-13 | 河南理工大学 | Petri network-based leakage protection setting calculation method for mine high-voltage power network |
| CN107565504A (en) * | 2017-09-04 | 2018-01-09 | 国网江西省电力公司电力科学研究院 | A kind of switch protection allocation list and look-up method suitable for 10kV distribution lines |
| CN110601158A (en) * | 2019-10-11 | 2019-12-20 | 国网福建省电力有限公司 | Method for online setting of distribution automation protection constant value |
| CN110808576A (en) * | 2019-11-15 | 2020-02-18 | 广州供电局有限公司 | Intelligent distributed single-phase earth fault isolation method suitable for small-current earth system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113471927A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102044869B (en) | Special topology analysis method and device for distribution network | |
| EP1973213A1 (en) | Validating a standardized configuration description | |
| CN111428376A (en) | CIM (common information model) -based power distribution network feeder contact mode identification method and system | |
| CN113471927B (en) | Switch classification-based power distribution network self-adaptive setting method and system | |
| CN112803379B (en) | Self-healing method for communication interruption function of override trip prevention system | |
| CN111799790A (en) | Method for configuring setting principle of power distribution network system | |
| CN108347050B (en) | Method for evaluating influence degree of distribution line protection scheme on power supply reliability | |
| CN107843779B (en) | Power system fault recording classification analysis method and system based on fuzzy clustering | |
| CN105550256A (en) | Power grid planning oriented automatic diluting method of geographical wiring diagram | |
| CN106529030B (en) | The border search method of last breaker | |
| CN114784821A (en) | Intelligent switching control method and system for power capacitor | |
| CN115663788A (en) | Distributed feeder automation topology identification method and system based on RTCN node | |
| CN107453334B (en) | Visio-based transformer substation alternating current system breaker level difference matching verification method | |
| CN113922357B (en) | Power grid line trunk analysis method and terminal | |
| CN115204319A (en) | Low-voltage distribution network topology parameter identification method and system | |
| CN107017639B (en) | CIM model load flow data conversion method and device based on JAVA platform | |
| CN112559804A (en) | Graph database-based power grid CIM/E model data processing method and device | |
| KR100506197B1 (en) | Over current relay satisfying arbitrary coordination condition | |
| CN113095578A (en) | Design method, device, terminal and medium for optimal communication path of transformer substation | |
| CN112491019B (en) | Intelligent analysis method for relay protection action of power distribution network | |
| CN112653125B (en) | Method and system for automatically generating power distribution network switch visual constant value matching diagram | |
| CN117349710B (en) | Method for predicting breaking capacity of vacuum arc-extinguishing chamber, electronic equipment and medium | |
| CN107947213B (en) | Starting method of multi-terminal flexible direct-current power transmission system with full-bridge module | |
| CN113659539B (en) | Distribution network longitudinal differential protection implementation method based on 5G technology | |
| CN115144741B (en) | Low-voltage intelligent breaker residual capacity calculation method and system based on block chain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |