CN115940394A - Method for setting multi-style configuration diagram of automatic switch of distribution network line - Google Patents
Method for setting multi-style configuration diagram of automatic switch of distribution network line Download PDFInfo
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Abstract
The invention relates to the technical field of power system relay protection, in particular to a method for setting a multi-style configuration diagram of an automatic switch of a distribution network line. The method comprises the following steps: acquiring a corresponding distribution network line diagram from a GIS system corresponding to a distribution network, and generating a simplified diagram of the line; generating the position condition, PT condition, grounding mode in the station and the like of the corresponding equipment in the simplified diagram; setting of the circuit breaker and the automatic switch in the generated simplified diagram is completed through a related relay protection setting calculation principle, and a protection equipment configuration diagram is formed; and simultaneously forming a distribution network feeder group protection switch configuration diagram only with protection equipment. The design of the invention can automatically generate a simplified circuit diagram according to a GIS system related to a power distribution network, and meanwhile, automatically classify setting of equipment and calculate the fixed value of corresponding protection equipment; meanwhile, various labels are automatically made in the simplified diagram of the system, and the protection setting value calculated by the system only needs to be checked and checked manually, so that the working efficiency is improved, and a global view is provided for daily overall planning and analysis of operation and maintenance personnel and regulation and control personnel.
Description
Technical Field
The invention relates to the technical field of power system relay protection, in particular to a method for setting a multi-style configuration diagram of an automatic switch of a distribution network line.
Background
The power distribution network is a loop which is crucial to power supply of users, protection configuration is correctly carried out, faults are effectively isolated, and power personnel of the power distribution network must consider the faults. Along with the continuous construction of a power grid, the scale of a power distribution network is continuously enlarged, although the calculation of the external fixed value of the power distribution network is relatively simple, the power distribution network has various lines, the number of the fixed values of the lines required to be calculated by protection personnel is huge, each line needs to manually draw a simplified protection calculation diagram, the work is extremely complicated, a large amount of time is consumed, and the work efficiency is low; regulation and control or operation personnel all need open the individual definite value at the daily circuit protection configuration of looking over or the definite value cooperation condition, lack the global view, not only waste time, and be difficult to overall analysis, have the potential safety hazard.
Disclosure of Invention
The invention aims to provide a method for setting a multi-style configuration diagram of an automatic switch of a distribution network line, so as to solve the problems in the background technology.
In order to solve the technical problem, an object of the present invention is to provide a method for setting a multi-style configuration diagram of an automatic switch of a distribution network line, which includes the following steps:
s1, acquiring a power distribution network SVG single-line graph file from a power distribution network GIS graph model system by taking an interface with the power distribution network GIS system;
s2, analyzing a corresponding single line diagram file of the power distribution network by utilizing java programming, identifying equipment required to be protected in the single line diagram, deleting and filtering other irrelevant information, and generating a single line diagram simplified diagram required by distribution network setting calculation in a suitable area;
s3, configuring PT conditions of all the automation equipment in the simplified diagram, and attaching PT marks on two sides of the equipment in the diagram;
s4, configuring grounding conditions of all transformer substations in the simplified diagram, attaching a grounding identifier in front of an outgoing switch, and distinguishing whether the outgoing line of the transformer substation is grounded through a small resistor or a small current;
s5, automatically setting the equipment of the line into a first branch, a second branch, a first subsection and a second subsection switch according to a related setting principle zone, and calculating a protection constant value of the automatic terminal protection equipment of the power distribution network by matching the related setting principle;
and S6, forming a feeder group protection configuration diagram, and displaying all the distribution automation equipment of the plurality of connecting lines in a simplified diagram, wherein the displayed information comprises but is not limited to setting types, fixed value conditions, PT conditions and in-station wiring conditions of the equipment.
As a further improvement of the technical scheme, in S2, the SVG line diagram of the power distribution network is analyzed by using java language, the device information related to protection is identified, unnecessary useless information is deleted and filtered, and the remaining information is used to form a new SVG file, which forms a basic file of the simplified diagram; thus only devices for protection calculations are reserved, including but not limited to intelligent automatic load switches, intelligent automatic circuit breakers, main and branch line names and important tower information.
As a further improvement of the present technical solution, in S3, the PT situations of all the automation devices are configured in the simplified diagram, and the specific operations of attaching PT identifiers to two sides of the devices in the diagram are as follows:
the automatic switch of the power distribution network is automatically identified through the IP address in the single line diagram file, the automatic equipment and the non-automatic equipment are distributed in the system, and the PT of the automatic equipment is labeled, so that a setting calculator can quickly find the corresponding switch position when setting and switching a power supply line or other conditions, and the method specifically comprises the following steps: the automatic switch equipment is automatically marked on two sides of the identified automatic switch equipment according to the PT condition of the equipment, if the PT on the power side and the PT on the load side of the equipment are on two sides, the PT icon is attached on the left side or the upper side of the equipment if only the PT on the power side exists, and the PT icon is attached on the right side or the lower side of the equipment if only the PT on the load side exists.
As a further improvement of the technical solution, in S4, the grounding conditions of all substations are configured in the simplified diagram, and a grounding identifier is attached in front of the outgoing line switch, and the specific operation of distinguishing whether the outgoing line of the substation is grounded by a small resistor or grounded by a small current is as follows:
the grounding conditions of outlet switches of all distribution network 10kV lines are distinguished, and different icons are marked, so that a setting calculator can quickly know the grounding mode of the lines in the station during setting, a setting method and a principle of equipment outside the station are quickly selected, and the purpose of knowing the setting conditions of all distribution networks in the same system is achieved.
As a further improvement of the technical solution, in S5, the device of the line is automatically set according to the relevant setting principle, and the specific operation of calculating the protection constant value of the distribution network automation terminal protection device by matching the relevant setting principle is as follows:
firstly, automatically setting the equipment of a line into a first branch, a second branch, a first section and a second section switch, and then carrying out corresponding calculation of protection fixed values on a circuit breaker and a load switch in a corresponding simplified diagram according to a setting calculation principle in a region, wherein the method specifically comprises the following steps: setting fixed values of a first branch, a second branch, a first subsection switch and a second subsection switch in a main setting line, and setting other corresponding setting principles for the rest devices; and combining the set fixed value with the generated simplified diagram to form a distribution network protection switch configuration diagram.
As a further improvement of the technical solution, in S6, a feeder group protection configuration diagram is formed, and specific operations of displaying all the distribution automation devices of the plurality of tie lines in one simplified diagram are as follows:
displaying a topological relation that two or more lines are mutually communicated on a system in a feeder line group diagram form, and simultaneously displaying information such as a connection relation, fixed value information, setting types and the like of corresponding automation equipment together, so that a setting calculator can check and calculate a fixed value of the equipment through the feeder line group diagram; the fixed values of two or more connecting lines are checked in a feeder group mode, the overall situation is mastered, and equipment is switched better when the lines are switched to supply power.
As a further improvement of the technical scheme, in S6, the computing personnel may also check the PT conditions of the corresponding side, quickly determine the switching device for switching power supply, and quickly determine the power supply switching scheme.
The second objective of the present invention is to provide a software system for setting a multi-pattern configuration diagram of a distribution network line automation switch and an operation platform device thereof, the device includes a processor, a memory and a computer program stored in the memory and running on the processor, and the processor is used for implementing the steps of the method for setting a multi-pattern configuration diagram of a distribution network line automation switch when executing the computer program.
It is a further object of the present invention to provide a computer-readable storage medium, in which a computer program is stored, which computer program, when being executed by a processor, performs the above-mentioned steps of the method for tuning a multi-mode configuration diagram for a distribution network line automation switch.
Compared with the prior art, the invention has the following beneficial effects:
1. in the method for setting the multi-style configuration diagram of the automatic switch of the distribution network line, starting from the perspective of power distribution network protection workers, a related single line diagram is obtained through a GIS (geographic information system) system of a butt joint power distribution network, the single line diagram is automatically simplified to form a distribution network protection setting calculation simplified diagram, a series of marks of PT (potential transformer), grounding conditions and setting types are carried out on corresponding automatic equipment on the diagram, meanwhile, a protection equipment setting value is automatically calculated, and the marks are displayed in the system in a visual mode; meanwhile, a corresponding feeder line group diagram communicated with the corresponding line is generated on the corresponding line, and setting calculation personnel can visually know all information of the equipment including but not limited to setting types, fixed value information, communication nodes and the like through the feeder line group diagram, so that a power supply switching scheme can be determined more quickly and accurately;
2. in the method for setting the multi-style configuration diagram by the automatic switch of the distribution network line, a simplified line diagram required by setting calculation of the distribution network can be automatically generated according to a GIS system related to the distribution network, and meanwhile, the setting classification of equipment is automatically carried out according to the position of automatic equipment, and the fixed value of corresponding protection equipment is calculated; meanwhile, various labels are automatically marked in a simplified diagram of the system, and a fixed value list can be given only by checking and checking the protection fixed value calculated by the system manually, so that the working efficiency of setting calculation personnel is greatly improved, and a large amount of time is saved for the setting calculation personnel.
3. In the method for setting the multi-style configuration diagram of the distribution network line automatic switch, the original multiple fixed values of one line are represented by a simple configuration diagram, the line connection condition, the protection configuration condition and the visibility are clear, and the configuration diagram is used by operation and maintenance departments and regulation departments for load increment control, fault judgment and positioning in a large quantity daily, so that the query time is shortened, the basis of overall consideration is provided, and the power transfer and restoration time is shortened.
Drawings
FIG. 1 is an overall process flow diagram of the present invention;
FIG. 2 is a simplified diagram of a distribution network unique to a red river generated by analyzing a GIS single line diagram in an exemplary manner in the present invention;
FIG. 3 is a diagram illustrating PT conditions for an apparatus for automatically generating a simplified graph in accordance with an exemplary system of the present invention;
FIG. 4 is a schematic diagram of the automatic calculation of the relative constants of the automation devices in the reduced graph in accordance with the exemplary embodiments of the present invention;
FIG. 5 is a block diagram of an exemplary electronic computer platform assembly in accordance with the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 5, this embodiment provides a method for setting a multi-pattern configuration diagram of an automatic switch of a distribution network line, including the following steps:
s1, acquiring a power distribution network SVG single-line graph file from a power distribution network GIS graph model system by taking an interface with the power distribution network GIS system;
s2, analyzing a corresponding single line diagram file of the power distribution network by utilizing java programming, identifying equipment required to be protected in the single line diagram, deleting and filtering other irrelevant information, and generating a single line diagram simplified diagram required by distribution network setting calculation in a suitable area;
s3, configuring PT conditions of all the automation equipment in the simplified diagram, and attaching PT marks on two sides of the equipment in the diagram;
s4, configuring grounding conditions of all transformer substations in the simplified diagram, attaching a grounding identifier in front of an outgoing switch, and distinguishing whether the outgoing line of the transformer substation is grounded through a small resistor or a small current;
s5, automatically setting the equipment of the line into a first branch, a second branch, a first subsection and a second subsection switch according to a related setting principle region, and calculating a protection constant value of the automatic terminal protection equipment of the power distribution network by matching with the related setting principle;
and S6, forming a feeder group protection configuration diagram, and displaying all the distribution automation equipment of the plurality of connecting lines in a simplified diagram, wherein the displayed information comprises but is not limited to setting types, fixed value conditions, PT conditions and in-station wiring conditions of the equipment.
In the embodiment, in the step S1, a distribution network single-graph file is acquired from a corresponding distribution network GIS graph-model system through an interface technology; the svg simplified diagram is converted by using a dom file analysis technology in java after a single line diagram is read from the GIS system.
Further, all information of the single line diagram is read, the needed transformer substation is screened out through the hierarchical relation in the diagram and the built-in associated information in the diagram, the protected switches and the tower information are put into use, and useless information is deleted and subtracted to form a relatively simple information list
In the embodiment, in the S2, the SVG circuit diagram of the power distribution network is analyzed by using the java language, the equipment information related to protection is identified, unnecessary useless information is deleted and filtered, and then a new SVG file is formed by using the residual information, and the new file forms a basic file of a simplified diagram;
therefore, only equipment used for protection calculation, including but not limited to intelligent automatic load switches, intelligent automatic circuit breakers, main line and branch line names and important pole and tower information, is reserved, the obtained information list is analyzed through corresponding algorithms to analyze the position of switches in a line and the hierarchical relation among the switches, the obtained information list is further analyzed through the protection of the switches to arrange list information needed by a simplified diagram, then the list information is exported to a corresponding folder, and a power distribution network protection calculation simplified diagram specially used for protection calculation is automatically generated.
In this embodiment, in S3, the PT conditions of all the automation devices are configured in the simplified diagram, and the specific operations of attaching PT identifiers to the two sides of the devices in the diagram are as follows:
the automatic switch of the power distribution network is automatically identified through an IP address in a single line diagram file, the automatic equipment and the non-automatic equipment of the power distribution network are distinguished in the system, and the PT of the automatic equipment is labeled, so that a setting calculator can quickly find a corresponding switch position when setting a power supply line or other conditions, and the method specifically comprises the following steps: the automatic switch equipment is automatically marked on two sides of the identified automatic switch equipment according to the PT condition of the equipment, if the PT on the power side and the PT on the load side of the equipment are on two sides, the PT icon is attached on the left side or the upper side of the equipment if only the PT on the power side exists, and the PT icon is attached on the right side or the lower side of the equipment if only the PT on the load side exists.
On the basis of generating the simplified diagram by the single line diagram, the existing switches of the distribution network are classified, the IP addresses of the equipment in the single line diagram file are read, whether the equipment is the switch of the distribution network automation equipment is judged according to the corresponding IP addresses, and the PT condition of the equipment in the single line diagram is identified after the equipment is determined to be the automation equipment.
In this embodiment, in S4, the grounding conditions of all substations are configured in the simplified diagram, and a grounding identifier is attached in front of the outgoing switch, and the specific operation of distinguishing whether the outgoing line of the substation is grounded through a small resistor or a small current is as follows:
the grounding conditions of outlet switches of all distribution network 10kV lines are distinguished, and different icons are marked, so that a setting calculator can quickly know the grounding mode of the lines in the station during setting, a setting method and a principle of equipment outside the station are quickly selected, and the purpose of knowing the setting conditions of all distribution networks in the same system is achieved.
Specifically, the grounding condition of the outgoing line of the corresponding transformer substation is identified from parameter reporting or distribution network initialization data, the grounding condition is generally divided into low-resistance grounding and low-current grounding, and different icons corresponding to different grounding are attached to the rear end of the outgoing line switch of the simplified diagram; if the outgoing line grounding condition of the transformer substation is changed, the corresponding grounding condition table is guided in, the system can automatically modify the outgoing line grounding condition of the corresponding transformer substation according to the latest table, and it is guaranteed that a setting calculator can set the system according to the actual field condition when using the system.
In this embodiment, in S5, the device of the line is automatically set according to the relevant setting principle, and the specific operation of calculating the protection fixed value of the automatic terminal protection device of the power distribution network by matching the relevant setting principle is as follows:
firstly, automatically setting the equipment of a line into a first branch, a second branch, a first section and a second section switch, and then carrying out corresponding calculation of protection fixed values on a circuit breaker and a load switch in a corresponding simplified diagram according to a setting calculation principle in a region, wherein the method specifically comprises the following steps: setting fixed values of a first branch, a second branch, a first section and a second section switch in a main setting line, and setting other corresponding setting principles of other equipment; and combining the set fixed value with the generated simplified diagram to form a distribution network protection switch configuration diagram.
The method comprises the steps of calculating a protection fixed value of automatic terminal protection equipment of the power distribution network, wherein the protection fixed value mainly comprises closing delay time (X time), closing confirmation time (Y time), opening delay time (Z time), opening locking time (C time) of a section switch, an overcurrent first-stage fixed value, an overcurrent second-stage fixed value and a zero-sequence first-stage fixed value; the method specifically comprises the following steps:
(1) Time X: taking for 35s; TX is more than or equal to Tcbt + Tcbc +. DELTA.T =10+20+2=32, TX is more than or equal to Tcbj +. DELTA.T =3+2=5 (the energy storage time of a breaker spring is generally less than 10s, the reclosing charging time is generally 20s, and the accelerated holding time after line protection is generally 3 s);
(2) Time Y: taking for 8s; TY is more than or equal to Tqc +. DELTA.T =5+2=7S (the longest protection of 10kV outgoing lines is 0.8S, the tripping time limit of low-current grounding line selection is 5S), and the low-resistance grounding system isolates the fault by means of the zero-sequence overcurrent protection (0.8S) of the outgoing lines of the transformer substation (the low resistance is put into 100S), so that the logic of the whole line is ensured to be completed;
(3) Z time: taking for 6s; the longest action time of the 10kV line end section is 0.8S Z ≥T b The action time of the tail section of the' + delta T =0.8+2=2.8S,35kV line is 1.4S at most, the coincidence time is 2.5S, T at most Z ≥T Z ′+T′ CH The action time of the sensitivity section at the power supply side of the line of =1.4+2.5+2=5.9S,110kV is generally 0.9S at most, the coincidence time is 2.5S at most, T Z ≥T Z ′+T′ CH + delta T =0.9+2.5+2=5.4S, the standby power automatic switching time of the upper power supply is taken as 5S (the standby power automatic switching is considered to be matched with the protection time of the line sensitivity section), and T Z ≥T b ' + Δ T =5+2=7S; the reclosing time of a 10kV line is 8S, Z is less than or equal to 8-2=6S; to sum up: the Z time is 6S, so that the condition that most of upper-level line reclosing action time is avoided is met (the probability of the automatic backup power switching action is small, and the automatic backup power switching action time of a multi-level series supply line is possibly long, and all the automatic backup power switching action time is not considered to be avoided);
(4) C, time: taking 83s; tC is more than or equal to tFZ +. DELTA.t =81+2=83 (longest branch coincidence time + step difference);
(5) A certain value is overflowed: firstly, identifying all the tie lines of the line, reading the fixed values of the outgoing line switches of the tie lines, and matching according to the fixed values of the outgoing line switches of the tie lines, wherein the matching coefficient is 1.1-1.3, and generally 1.21 is taken as the matching coefficient;
(6) Overcurrent two-stage constant value: matching according to an overcurrent two-stage fixed value of the outgoing line switch of the connecting line, wherein the matching coefficient is 1.1-1.3, and generally 1.1 is taken as the matching coefficient;
(7) Zero sequence first-stage constant value: the single-phase grounding capacitance current of the line which is kept away from the power supply is matched with the zero sequence overcurrent (tripping) section of the transformer substation (the matching coefficient is 1), and generally 30A is taken.
In this embodiment, in S6, a feeder group protection configuration diagram is formed, and specific operations of displaying all the distribution automation devices of the plurality of tie lines in one simplified diagram are as follows:
displaying a topological relation that two or more lines are mutually communicated on a system in a feeder line group diagram form, and simultaneously displaying information such as a connection relation, fixed value information, setting types and the like of corresponding automation equipment together, so that a setting calculator can check and calculate a fixed value of the equipment through the feeder line group diagram; the fixed values of two or more connecting lines are checked in a feeder group mode, the overall situation is mastered, and equipment is switched better when the lines are switched to supply power.
Specifically, single line diagrams with connection relations are connected through respective interconnection switches to generate a feeder line group diagram, PT conditions and fixed value conditions of corresponding equipment are displayed in the feeder line group diagram, and setting types of the corresponding equipment are displayed; meanwhile, the corresponding ring main unit is displayed in a single icon form, can be expanded and zoomed, and can be dragged and moved to corresponding equipment
Further, in S6, the calculation personnel can set a corresponding power transfer scheme in the feeder group diagram, and when power transfer is performed, the calculation personnel can conveniently check the PT condition of the corresponding side, quickly judge switching equipment for transferring power in the feeder group diagram and quickly determine the power transfer scheme.
In addition, it is worth explaining that, for the use of the feeder line group diagram, the fixed value setting is planned to be carried out on the diagram in the next stage, and the system automatically sets the optimal fixed value of the corresponding equipment in the connection relation, so that the reliability of power supply is improved.
As shown in fig. 5, the present embodiment further provides a software system for setting a multi-pattern configuration diagram of a distribution network line automation switch and an operation platform device thereof, where the software system includes a processor, a memory, and a computer program stored in the memory and running on the processor.
The processor comprises one or more than one processing core, the processor is connected with the memory through the bus, the memory is used for storing program instructions, and the method for setting the multi-mode configuration diagram of the distribution network line automatic switch is realized when the processor executes the program instructions in the memory.
Alternatively, the memory may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
In addition, the invention also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the method for setting the multi-style configuration diagram of the distribution network line automation switch.
Optionally, the present invention further provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps of the method for tuning a multi-mode configuration diagram for a distribution network line automation switch according to the above aspects.
It will be understood by those skilled in the art that the processes for implementing all or part of the steps of the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A method for setting a multi-style configuration diagram of an automatic switch of a distribution network line is characterized by comprising the following steps: the method comprises the following steps:
s1, acquiring a SVG (scalable vector graphics) single-line graph file of the power distribution network from a GIS (geographic information System) graph model system of the power distribution network by taking an interface with the GIS system of the power distribution network;
s2, analyzing a corresponding single line diagram file of the power distribution network by utilizing java programming, identifying equipment required to be protected in the single line diagram, deleting and filtering other irrelevant information, and generating a single line diagram simplified diagram required by distribution network setting calculation in a suitable area;
s3, configuring PT conditions of all the automation equipment in the simplified diagram, and attaching PT marks on two sides of the equipment in the diagram;
s4, configuring grounding conditions of all substations in the simplified diagram, attaching a grounding identification in front of an outlet switch, and distinguishing whether the outlet of the substation is grounded through a small resistor or a small current;
s5, automatically setting the equipment of the line into a first branch, a second branch, a first subsection and a second subsection switch according to a related setting principle zone, and calculating a protection constant value of the automatic terminal protection equipment of the power distribution network by matching the related setting principle;
and S6, forming a feeder group protection configuration diagram, and displaying all the distribution automation equipment of the plurality of connecting lines in a simplified diagram, wherein the displayed information comprises but is not limited to setting types, constant value conditions, PT conditions and in-station wiring conditions of the equipment.
2. The method for setting a multi-mode configuration diagram for the automatic switch of the distribution network line according to claim 1, wherein: in the S2, analyzing the SVG circuit diagram of the power distribution network by using a java language, identifying equipment information related to protection in the SVG circuit diagram, deleting and filtering unnecessary useless information, and forming a new SVG file by using the residual information, wherein the new file forms a basic file of a simplified diagram; thus only devices for protection calculations are reserved, including but not limited to intelligent automatic load switches, intelligent automatic circuit breakers, main and branch line names and important tower information.
3. The method for setting the multi-mode configuration diagram of the distribution network line automatic switch according to claim 1, characterized in that: in S3, configuring PT situations of all automation devices in the simplified diagram, and attaching PT identifiers to two sides of the devices in the diagram specifically includes:
the automatic switch of the power distribution network is automatically identified through an IP address in a single line diagram file, the automatic equipment and the non-automatic equipment of the power distribution network are distinguished in the system, and the PT of the automatic equipment is labeled, so that a setting calculator can quickly find a corresponding switch position when setting a power supply line or other conditions, and the method specifically comprises the following steps: the automatic switch equipment is automatically marked on two sides of the identified automatic switch equipment according to the PT condition of the equipment, if the PT on the power side and the PT on the load side of the equipment are on two sides, the PT icon is attached on the left side or the upper side of the equipment if only the PT on the power side exists, and the PT icon is attached on the right side or the lower side of the equipment if only the PT on the load side exists.
4. The method for setting the multi-mode configuration diagram of the distribution network line automatic switch according to claim 1, characterized in that: in the step S4, the grounding situations of all substations are configured in the simplified diagram, and a grounding identifier is attached in front of the outgoing switch, and the specific operation of distinguishing whether the outgoing line of the substation is grounded by a small resistor or a small current is as follows:
the grounding conditions of outlet switches of all distribution network 10kV lines are distinguished, and different icons are marked, so that a setting calculator can quickly know the grounding mode of the lines in the station during setting, a setting method and a principle of equipment outside the station are quickly selected, and the purpose of knowing the setting conditions of all distribution networks in the same system is achieved.
5. The method for setting a multi-mode configuration diagram for the automatic switch of the distribution network line according to claim 1, wherein: in the step S5, the equipment of the line is automatically set according to the relevant setting principle, and the specific operation of calculating the protection fixed value of the automatic terminal protection equipment of the power distribution network by matching the relevant setting principle is as follows:
firstly, automatically setting the equipment of a line into a first branch, a second branch, a first section and a second section switch, and then carrying out corresponding calculation of protection fixed values on a circuit breaker and a load switch in a corresponding simplified diagram according to a setting calculation principle in a region, wherein the method specifically comprises the following steps: setting fixed values of a first branch, a second branch, a first section and a second section switch in a main setting line, and setting other corresponding setting principles of other equipment; and combining the set fixed value with the generated simplified diagram to form a distribution network protection switch configuration diagram.
6. The method for setting the multi-mode configuration diagram of the distribution network line automatic switch according to claim 1, characterized in that: in S6, a feeder group protection configuration diagram is formed, and the specific operations of displaying all the distribution automation devices of the plurality of tie lines in one simplified diagram are as follows:
displaying a topological relation that two or more lines are mutually communicated on a system in a feeder line group diagram form, and simultaneously displaying information such as a connection relation, fixed value information, setting types and the like of corresponding automation equipment together, so that a setting calculator can check and calculate a fixed value of the equipment through the feeder line group diagram; the fixed values of two or more connecting lines are checked in a feeder group mode, the overall situation is mastered, and equipment is switched better when the lines are switched to supply power.
7. The method for setting the multi-mode configuration diagram of the distribution network line automation switch according to claim 6, characterized in that: in S6, the calculation personnel can also check the PT condition of the corresponding side, quickly judge the switching equipment for switching power supply, and quickly determine a power supply switching scheme.
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| CN116760190A (en) * | 2023-08-11 | 2023-09-15 | 深圳市银河通信科技有限公司 | Intelligent control system for multi-line mutual protection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760190A (en) * | 2023-08-11 | 2023-09-15 | 深圳市银河通信科技有限公司 | Intelligent control system for multi-line mutual protection |
| CN116760190B (en) * | 2023-08-11 | 2023-12-29 | 深圳市银河通信科技有限公司 | Intelligent control system for multi-line mutual protection |
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