Method and system for verifying the suitability of transmission line straight tower clearance

Abstract

The present invention relates to the technical field of transmission line straight tower verification, and specifically discloses a method and system for realizing the clearance applicability verification of transmission line straight towers, which specifically includes the following steps: step S1: obtaining the pole tower ranking data, meteorological data, string type data, clearance value data, and iron tower data of the transmission line; step S2: calculating the small sag data of various tower types of straight towers; step S3: calculating and counting the downtilt angle of each straight tower according to the pole tower ranking data and the small sag data; step S4: obtaining the maximum allowable swing angle of the insulator string in the current ranking and under various working conditions; step S5: back-calculating the KV value of the straight tower; step S6: batch judging whether each straight tower meets the clearance requirement. The present invention can significantly improve the efficiency of the clearance applicability verification of the transmission line straight tower, can effectively design the optimal configuration of the straight tower clearance verification, and can batch optimize, quickly and efficiently verify the configuration.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission line straight tower verification, and more particularly to a method and system for implementing transmission line straight tower clearance suitability verification. Background Art

[0002] With the development of my country's power grid, transmission lines inevitably involve applied towers. In particular, for the clearance circle verification of applied straight towers, manual verification of each tower was usually adopted in the past.

[0003] In order to adapt to a more efficient and intelligent development model, the current development trend of power grids, both internationally and domestically, is to promote the digital and intelligent transformation of power grids and assist in the digital transformation of traditional power grid services. However, the manual verification method of each base is obviously unable to meet the needs of the digital development of power grids in the new era.

[0004] Linear tower clearance verification has always been an important part of the electrical design of transmission lines. Currently, the methods and logic used by the design industry to apply linear tower clearance verification are relatively backward. Most of them are single-base manual verification, which cannot be performed with one-click optimization and batch setting. The degree of digitization and efficiency are low, there is too much manual intervention, and its reliability is also poor.

[0005] Therefore, there is an urgent need for a fast and efficient calibration and configuration method that can batch optimize the clearance of applied linear towers to improve efficiency and reliability. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a method and system for realizing the suitability verification of the clearance between straight towers of power transmission lines;

[0007] The solution adopted by the present invention to solve the technical problem is:

[0008] on the one hand:

[0009] A method for verifying the suitability of a transmission line straight tower clearance comprises the following steps:

[0010] Step S1: obtaining the tower ranking data, meteorological data, string type data of the insulator string, gap value data under different altitude conditions, and tower data of the straight tower of the transmission line;

[0011] Step S2: Calculate the small sag data of various tower types and straight towers;

[0012] Step S3: Calculate and count the downtilt angle of each straight tower according to the tower ranking data and the small sag data;

[0013] Step S4: configuring the allowable swing angle of the insulator string according to the tower ranking data, meteorological data, string type data, small sag data, tower data, and gap value data, and obtaining the maximum allowable swing angle of the insulator string in the current ranking and under various working conditions;

[0014] Step S5: back-calculating the KV value of the straight tower according to the maximum allowable swing angle;

[0015] Step S6: According to the tower ranking data, meteorological data, string type data, clearance value data, tower data, downtilt angle and KV value, batch determine whether each straight tower meets the clearance requirement.

[0016] Step S7: If there are straight towers that do not meet the clearance requirements, perform 3D verification on the straight towers that do not meet the clearance requirements.

[0017] In some possible implementations, the tower ranking data includes the tower number of each tower position, the tower type of each straight tower, the call height of each straight tower, the base of each straight tower, the altitude of each straight tower, the rotation angle of each straight tower, the cumulative distance of each straight tower, the height of the hanging point of each straight tower, the string type of the insulator string on each straight tower, the equivalent height of the insulator string on each straight tower, the model of the conductor on each straight tower, and the conductor K value of the conductor on each straight tower.

[0018] In some possible implementations, the meteorological data include data of different meteorological zones under high temperature conditions, low temperature conditions, icing conditions, annual average conditions, strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions.

[0019] In some possible implementations, the string type data of the insulator string includes the length of the insulator, the length of the hardware on the hanging point side, the length of the wire string hardware, the height of the grading ring, and the V-string angle.

[0020] In some possible implementations, the gap value data includes gap values ​​under high wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions.

[0021] In some possible implementations, the tower data includes the tower head height, the conductor hanging point position, the floor heights of the upper, middle and lower phases or poles, the floor heights of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head crossarm, the crossarm slope, the crossarm length, the crossarm width, and the tower body slope.

[0022] In some possible implementations, step S2 specifically includes the following steps:

[0023] Step S21: calculating the sag variable of the bottle mouth under the linear tower at each tower position;

[0024] ;

[0025] Among them, △fa represents the sag variable of the lower bottle mouth;

[0026] Indicates the downward tilt angle of the conductor;

[0027] La represents the width of the lower bottle mouth;

[0028] Step S22: calculating the sag variable of the straight tower side bottle mouth at each tower position;

[0029] ;

[0030] Among them, △fb represents the sag variable of the side bottle mouth;

[0031] Indicates the downward tilt angle of the conductor;

[0032] Lb represents the width of the side bottle mouth;

[0033] Step S23: determining the small sag data of various tower types and straight towers;

[0034] ;

[0035] △f represents the small sag data.

[0036] In some possible implementations, when configuring the allowable swing angle of the insulator string, the gap circle formed by the long string and the gap circle formed by the short string in the insulator string are selected for comparison to obtain a control gap circle tangent to the tower body; and the maximum allowable swing angle of the insulator string in the current ranking and under various working conditions is obtained.

[0037] on the other hand:

[0038] A system for realizing suitability verification of clearance between straight towers of a transmission line, comprising:

[0039] A tower ranking database, used to store tower ranking data of line transmission circuits;

[0040] The tower ranking data includes the tower number of each tower position, the tower type of each straight tower, the call height of each straight tower, the base of each straight tower, the altitude of each straight tower, the rotation angle of each straight tower, the cumulative distance of each straight tower, the height of the hanging point of each straight tower, the string type of the insulator string on each straight tower, the equivalent height of the insulator string on each straight tower, the model of the conductor on each straight tower, and the conductor K value of the conductor on each straight tower;

[0041] Meteorological database, used to store meteorological data;

[0042] The meteorological database includes data of different meteorological zones under high temperature conditions, low temperature conditions, icing conditions, annual average conditions, strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions;

[0043] String type database, used to store string type data of different insulator strings;

[0044] The string type data of the insulator string includes the length of the insulator, the length of the hardware on the hanging point side, the length of the hardware on the conductor string, the height of the grading ring, and the V-string angle;

[0045] The gap value database is used to store the gap value data of various tower types and linear towers;

[0046] The gap value data includes gap values ​​under strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions;

[0047] Tower database, used to store tower data of various tower types and linear towers;

[0048] The tower data includes the tower head height, the conductor hanging point position, the floor height of the upper, middle and lower phases or poles, the floor height of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head cross arm, the cross arm slope, the cross arm length, the cross arm width, and the tower body slope;

[0049] The data processing module verifies the suitability of the clearance between the straight towers of the transmission line by using the method for realizing the suitability verification of the clearance between the straight towers of the transmission line as described above.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] The present invention can significantly improve the efficiency of suitability verification of transmission line straight tower clearances, can effectively design the optimal configuration for straight tower clearance verification, can perform batch optimization, and can quickly and efficiently perform verification configuration, effectively improving efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is the workflow diagram of the method in the present invention;

[0053] Figure 2 A connection diagram of the system in the present invention;

[0054] Among them: 1. Tower ranking database; 2. Meteorological database; 3. String database; 4. Gap value database; 5. Tower database; 6. Data processing module; 7. Visualization module; 8. Terminal. DETAILED DESCRIPTION

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity restriction, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The present invention is described in detail below.

[0057] like Figure 1 As shown, a method for verifying the suitability of the clearance between straight towers of a transmission line specifically comprises the following steps:

[0058] Step S1: obtaining the tower ranking data, meteorological data, string type data of the insulator string, gap value data under different altitude conditions, and tower data of the straight tower of the transmission line;

[0059] Specifically, the tower ranking data includes the tower number of each tower position, the tower type of each straight tower, the height of each straight tower, the base of each straight tower, the altitude of each straight tower, the rotation angle of each straight tower, the cumulative distance of each straight tower, the height of the hanging point of each straight tower, the string type of the insulator string on each straight tower, the equivalent height of the insulator string on each straight tower, the model of the conductor on each straight tower, and the conductor K value of the conductor on each straight tower.

[0060] The meteorological data include data of different meteorological zones under high temperature conditions, low temperature conditions, icing conditions, annual average conditions, strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions.

[0061] The string type data of the insulator string includes the length of the insulator, the length of the hardware on the hanging point side, the length of the hardware on the conductor string, the height of the grading ring, and the V-string angle.

[0062] The gap value data includes gap values ​​under high wind conditions, internal over-flow conditions, external over-flow conditions, and live maintenance conditions.

[0063] The tower data include the tower head height, the conductor hanging point position, the floor height of the upper, middle and lower phases or poles, the floor height of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head cross arm, the cross arm slope, the cross arm length, the cross arm width, and the tower body slope; the bottle mouth width includes the lower bottle mouth width and the side bottle mouth width;

[0064] Specifically, the floor heights of the upper, middle and lower phases or poles correspond to double-circuit transmission lines;

[0065] The floor heights of the left, center, and right phases or poles correspond to single-circuit transmission lines.

[0066] Step S2: Calculate the small sag data of various tower types and straight towers; specifically includes the following steps:

[0067] Step S21: calculating the sag variable of the bottle mouth under the linear tower at each tower position;

[0068] ;

[0069] Among them, △fa represents the sag variable of the lower bottle mouth;

[0070] Indicates the downward tilt angle of the conductor. It should be noted that the downward tilt angle of the conductor varies according to the actual tower position.

[0071] La represents the width of the lower bottle mouth;

[0072] Step S22: calculating the sag variable of the straight tower side bottle mouth at each tower position;

[0073] ;

[0074] Among them, △fb represents the sag variable of the side bottle mouth;

[0075] Lb represents the width of the side bottle mouth;

[0076] Step S23: determining the small sag data of various tower types and straight towers;

[0077] Specifically, the maximum value of the sag variable of the lower bottle mouth and the sag variable of the side bottle mouth is selected as the small sag data; that is:

[0078] ;

[0079] △f represents the small sag data.

[0080] Step S3: Calculate and count the downtilt angle of each straight tower according to the tower ranking data and the small sag data; specifically, collect the tower ranking data and the small sag data of each straight tower;

[0081] According to the tower position data and small sag data, the downward tilt angle of each straight tower is calculated.

[0082] Step S4: configuring the allowable swing angle of the insulator string according to the tower ranking data, meteorological data, string type data, small sag data, tower data, and gap value data;

[0083] When configuring the allowable swing angle of the insulator string, the gap circle formed by the long string and the gap circle formed by the short string in the insulator string are selected and compared to obtain the control gap circle tangent to the tower body; the maximum allowable swing angle of the insulator string in the current ranking and under various working conditions is obtained;

[0084] Specifically, when configuring the allowable swing angle of the insulator string, the gap circle formed by the long string or the short string in the insulator string can be selected to be tangent to the tower body according to the tower head structure, and the gap circle tangent to the tower body is the controlled gap circle.

[0085] Step S5: Back-calculate the KV value of the straight tower according to the maximum allowable swing angle.

[0086] Step S6: According to the tower ranking data, meteorological data, string type data, clearance value data, tower data, downtilt angle and KV value, batch determine whether each straight tower meets the clearance requirement.

[0087] Step S7: If there are straight towers that do not meet the clearance requirements, perform 3D verification on the straight towers that do not meet the clearance requirements.

[0088] on the other hand:

[0089] like Figure 2 As shown, a system for realizing suitability verification of clearance between straight towers of a transmission line comprises:

[0090] A tower ranking database 1, used to store tower ranking data of line transmission circuits;

[0091] The tower ranking data includes the tower number of each tower position, the tower type of each straight tower, the call height of each straight tower, the base of each straight tower, the altitude of each straight tower, the rotation angle of each straight tower, the cumulative distance of each straight tower, the height of the hanging point of each straight tower, the string type of the insulator string on each straight tower, the equivalent height of the insulator string on each straight tower, the model of the conductor on each straight tower, and the conductor K value of the conductor on each straight tower;

[0092] Meteorological database 2, used for storing meteorological data;

[0093] The meteorological database includes data of different meteorological zones under high temperature conditions, low temperature conditions, icing conditions, annual average conditions, strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions;

[0094] A string type database 3, used to store string type data of different insulator strings;

[0095] The string type data of the insulator string includes the length of the insulator, the length of the hardware on the hanging point side, the length of the hardware on the conductor string, the height of the grading ring, and the V-string angle;

[0096] A clearance value database 4 is used to store clearance value data of various tower types and linear towers;

[0097] The gap value data includes gap values ​​under strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions;

[0098] The tower database 5 is used to store tower data of various tower types and linear towers;

[0099] The tower data include the tower head height, the conductor hanging point position, the floor height of the upper, middle and lower phases or poles, the floor height of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head cross arm, the cross arm slope, the cross arm length, the cross arm width, and the tower body slope; the bottle mouth width includes the lower bottle mouth width and the side bottle mouth width;

[0100] The above data import is an existing technology and will not be described here. For example, the tower ranking data is directly imported using TA files; the import format of meteorological data, string data, and gap value data is .xls format or .xlsx format; the import format of tower data is .dwg format;

[0101] The data processing module 6 is connected to the pole tower ranking database 1, the meteorological database 2, the string database 3, the gap value database 4, and the tower database 5 respectively; the data processing module 6 uses the method for realizing the suitability verification of the gap between the straight towers of the transmission line as described above to verify the suitability of the gap between the straight towers of the transmission line.

[0102] Furthermore, a system for realizing suitability verification of clearance between straight towers of power transmission lines also includes a visualization module 7 connected to the data processing module 6, and the visualization module 7 is used to display configuration information of the clearance circle and the allowable swing angle in real time.

[0103] Furthermore, a system for implementing the suitability verification of the clearance between straight towers of a transmission line also includes a terminal 8 connected to the visualization module 7 or the data processing module 6; the terminal 8 is used to output the final configuration result in a table form.

[0104] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A method for verifying the suitability of the clearance between straight towers of a power transmission line, characterized in that: The specific steps include: Step S1: obtaining the tower ranking data, meteorological data, string type data of the insulator string, gap value data under different altitude conditions, and tower data of the straight tower of the transmission line; Step S2: Calculate the small sag data of various tower types and straight towers; the step S2 specifically includes the following steps: Step S21: calculating the sag variable of the bottle mouth under the linear tower at each tower position; ； Among them, △fa represents the sag variable of the lower bottle mouth; Indicates the downward tilt angle of the conductor; La represents the width of the lower bottle mouth; Step S22: calculating the sag variable of the straight tower side bottle mouth at each tower position; ； Among them, △fb represents the sag variable of the side bottle mouth; Indicates the downward tilt angle of the conductor; Lb represents the width of the side bottle mouth; Step S23: determining the small sag data of various tower types and straight towers; ； △f represents small sag data; Step S3: Calculate and count the downtilt angle of each straight tower according to the tower ranking data and the small sag data; Step S4: configuring the allowable swing angle of the insulator string according to the tower ranking data, meteorological data, string type data, small sag data, tower data, and gap value data, and obtaining the maximum allowable swing angle of the insulator string in the current ranking and under various working conditions; when configuring the allowable swing angle of the insulator string, selecting and comparing the gap circle formed by the long string and the gap circle formed by the short string in the insulator string, and obtaining the control gap circle tangent to the tower body; obtaining the maximum allowable swing angle of the insulator string in the current ranking and under various working conditions; Step S5: back-calculating the KV value of the straight tower according to the maximum allowable swing angle; Step S6: According to the tower ranking data, meteorological data, string type data, clearance value data, tower data, downtilt angle and KV value, batch determine whether each straight tower meets the clearance requirement.

2. A method for verifying the suitability of transmission line straight tower clearance according to claim 1, characterized in that: The tower ranking data includes the tower number of each tower position, the tower type of each straight tower, the call height of each straight tower, the base of each straight tower, the altitude of each straight tower, the rotation angle of each straight tower, the cumulative distance of each straight tower, the height of the hanging point of each straight tower, the string type of the insulator string on each straight tower, the equivalent height of the insulator string on each straight tower, the model of the conductor on each straight tower, and the conductor K value of the conductor on each straight tower.

3. A method for checking the suitability of transmission line straight tower clearance according to claim 1, characterized in that: The meteorological data include data of different meteorological zones under high temperature conditions, low temperature conditions, icing conditions, annual average conditions, strong wind conditions, internal overload conditions, external overload conditions, and live maintenance conditions.

4. A method for verifying the suitability of transmission line straight tower clearance according to claim 1, characterized in that: The string type data of the insulator string includes the length of the insulator, the length of the hardware on the hanging point side, the length of the hardware of the conductor string, the height of the grading ring, and the V-string angle.

5. A method for checking the suitability of transmission line straight tower clearance according to claim 1, characterized in that: The gap value data includes gap values ​​under high wind conditions, internal over-flow conditions, external over-flow conditions, and live maintenance conditions.

6. A method for checking the suitability of transmission line straight tower clearance according to claim 1, characterized in that: The tower data includes the tower head height, the position of the wire hanging point, the floor heights of the upper, middle and lower phases or poles, the floor heights of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head crossarm, the crossarm slope, the crossarm length, the crossarm width, and the tower body slope.

7. A method for checking the suitability of transmission line straight tower clearance according to claim 1, characterized in that: The method further includes step S7: if there are straight towers that do not meet the clearance requirements, performing 3D verification on the straight towers that do not meet the clearance requirements.

8. A system for verifying the suitability of the clearance between straight towers of a power transmission line, characterized in that: include: A tower ranking database, used to store tower ranking data of line transmission circuits; Meteorological database, used to store meteorological data; String type database, used to store string type data of different insulator strings; The gap value database is used to store the gap value data of various tower types and linear towers; Tower database, used to store tower data of various tower types and linear towers; The data processing module verifies the suitability of the clearance between straight towers of a transmission line by using the method for realizing the suitability verification of the clearance between straight towers of a transmission line as described in any one of claims 1 to 7.

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