A method for monitoring and linking analysis of reactive equipment in distribution network

Abstract

The invention discloses a method for monitoring and linkage analysis of reactive equipment in a distribution network, which is characterized by comprising the following steps: step one, collecting real-time operation data of each monitoring point in the distribution network and electricity data of a meter; step two, establishing a distribution network power supply voltage index evaluation system, firstly using the AHP method and the TOPSIS method for combined weighting, and then using the TOPSIS method to determine the degree of closeness to the best substation and the worst substation, scoring the substation, and the score represents the severity of voltage anomaly; the present invention uses the AHP method and the TOPSIS method for combined weighting and reactive equipment monitoring protocol to realize remote monitoring of the operating status of reactive equipment, maximize the supply voltage, and reduce the active network loss of the line; the voltage regulator is simple in structure and easy to use through a cold plate, a heat pipe, a voltage regulating module and a fan fin, which is convenient for heat dissipation of the voltage regulator, has a good heat dissipation effect, and increases the service life of the voltage regulator.

Description

Technical Field

[0001] The invention relates to the technical field of reactive equipment monitoring and linkage analysis of distribution networks, and specifically to a method for reactive equipment monitoring and linkage analysis of distribution networks. Background Art

[0002] With the advancement of science and technology, the intelligence level of distribution networks is getting higher and higher. The real-time operation data of distribution networks can be monitored and analyzed by establishing an analysis platform. However, the current monitoring and analysis effects are relatively poor, which makes the entire work process and efficiency relatively poor. It is impossible to determine the optimal position and gear of reactive equipment and voltage regulators, and it is impossible to maximize the power supply voltage, and it is also impossible to effectively reduce the active network loss of the line. Therefore, it is necessary to design a distribution network reactive equipment monitoring and linkage analysis method. Summary of the invention

[0003] The purpose of the invention is to provide a method for monitoring and linkage analysis of reactive equipment in a distribution network. The present invention utilizes the AHP method and the entropy method to perform combined weighting and reactive equipment monitoring regulations, thereby realizing remote monitoring of the operating status of reactive equipment, maximizing the supply voltage, and reducing active network loss of the line. The voltage regulator is simple in structure and easy to use through a cold plate, a heat pipe, a voltage regulating module, and a fan fin, which is convenient for heat dissipation of the voltage regulator, has a good heat dissipation effect, and increases the service life of the voltage regulator.

[0004] The purpose of the invention can be achieved through the following technical solutions:

[0005] A method for monitoring and linking analysis of reactive equipment in a distribution network comprises the following steps:

[0006] Step 1: Collect real-time operation data and meter power data of each monitoring point in the distribution network;

[0007] Step 2: Establish a distribution network power supply voltage index evaluation system. First, use the AHP and the entropy method to perform combined weighting. Then use the TOPSIS method to determine the degree of closeness to the best and worst substations, and score the substations. The score represents the severity of voltage anomalies. The substations themselves and the upper-level distribution network grid indicators and operation indicators are used as influencing factors to form a relatively complete influencing factor system.

[0008] Step 3: Using the reactive equipment status real-time monitoring module and information processing display platform, the measurement and control module monitors the reactive equipment status and operation data of the distribution substation area, and accesses the reactive equipment status monitoring platform through the two-way wireless communication protocol. Through the platform, the operation status of the substation area is mastered, the reactive equipment switching is controlled, and the rationality of the reactive equipment switching strategy is analyzed;

[0009] Step 4: Find out the reactive equipment linkage analysis and optimization algorithm suitable for large-scale distribution lines, study the commonly used reactive power optimization algorithms, and determine the optimal positions and gears of reactive equipment and voltage regulators.

[0010] As a further solution of the invention: in the step 2, the analytic hierarchy process AHP is used to obtain the subjective weight of each indicator, the relevant data of all abnormal voltage areas in the power grid are collected, the entropy method is used to determine the objective weight of each influencing factor, and the minimum information drop principle is used to obtain the combined weight.

[0011] As a further solution of the invention: in the step four, the reactive power optimization algorithm is a two-stage reactive power optimization algorithm based on distribution partitioning and integer particle swarm optimization; first, the partitions of the distribution line are identified to achieve "reactive local balance" in the reactive power weak area; in the second stage, the hierarchical structure of the distribution line is utilized to select the nearest common ancestor node in the voltage-reactive power transition zone and set the line voltage regulator; in the third stage, the integer particle swarm optimization is used to calculate the optimal gear of the line voltage regulator.

[0012] As a further scheme of the invention: in the step four, the voltage regulator includes a voltage regulating cabinet, a mounting groove, a cold plate, a heat pipe, a voltage regulating module, a heat fan fin, a shield, a protective net, a heat dissipation hole, a hinge, a cabinet door, a handle, a control button, a display screen, a U-shaped buffer plate, a wear-resistant block, a spring and an anti-slip protrusion. A plurality of mounting grooves are opened on the interior of the voltage regulating cabinet, a plurality of cold plates are fixed on the inner wall of the bottom end of the mounting groove, a plurality of heat pipes are installed on both sides of the cold plate, and one end of the heat pipe is inserted into the cold plate, a voltage regulating module is installed on the top outer wall of the cold plate, and a heat fan fin is fixed on one end of the heat pipe passing through the outer wall of the voltage regulating cabinet.

[0013] As a further solution of the invention: a plurality of hinges are fixed on one side of the voltage regulating cabinet, a cabinet door is fixed on the outer wall between the hinges, a handle is fixed on one side of the cabinet door, a control button is installed on the outer wall of the cabinet door on the handle side, and a display screen is installed on the outer wall of the cabinet door above the control button.

[0014] As a further solution of the invention: U-shaped buffer plates are fixed on the four corners of the bottom end of the voltage regulating cabinet, springs are fixed between the inner walls of the U-shaped buffer plates, wear-resistant blocks are welded on the outer wall of the bottom end of the U-shaped buffer plates, and multiple anti-slip protrusions are fixed on the outer wall of the bottom end of the wear-resistant blocks.

[0015] As a further solution of the invention: shields are fixed on both sides of the voltage regulating cabinet corresponding to the heat-fanning fins, and the heat-fanning fins are located inside the shields, and a protective net is inlaid on one side outer wall of the shield.

[0016] As a further solution of the invention: a heat dissipation hole is provided on an outer wall of one side of the voltage regulating cabinet corresponding to the installation groove, and the heat dissipation hole is connected to the installation groove.

[0017] Beneficial effects of the invention: The present invention utilizes the AHP method and the entropy method to perform combined weighting and reactive equipment monitoring regulations, thereby realizing remote monitoring of the operating status of reactive equipment, maximizing the power supply voltage, and reducing the active network loss of the line; the voltage regulator provided in the present invention has a simple structure and is easy to use through a cold plate, a heat pipe, a voltage regulating module, and a fan fin, which is convenient for heat dissipation of the voltage regulator and has a relatively good heat dissipation effect, thereby increasing the service life of the voltage regulator; through the cooperation of a U-shaped buffer plate, a wear-resistant block, and a spring, it is convenient to perform shock absorption and buffering on the voltage regulator, thereby reducing the vibration and shaking of the voltage regulator and preventing the internal parts of the voltage regulator from being damaged, and is worthy of wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the invention;

[0020] Figure 2 It is a schematic diagram of the overall rear-view stereoscopic structure of the invention;

[0021] Figure 3 It is a schematic diagram of the overall side cutaway structure of the invention;

[0022] Figure 4 For invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0023] In the figure: 1. voltage regulating cabinet; 2. mounting slot; 3. cold plate; 4. heat pipe; 5. voltage regulating module; 6. fan fins; 7. protective cover; 8. protective net; 9. heat dissipation holes; 10. hinge; 11. cabinet door; 12. handle; 13. control button; 14. display screen; 15. U-shaped buffer plate; 16. wear-resistant block; 17. spring; 18. anti-slip protrusion. DETAILED DESCRIPTION

[0024] The technical solution of the invention will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the invention, not all of them. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0025] like Figure 1-4 As shown, a method for monitoring and linking analysis of reactive equipment in a distribution network comprises the following steps:

[0026] Step 1: Collect real-time operation data and meter power data of each monitoring point in the distribution network;

[0027] Step 2: Establish a distribution network power supply voltage index evaluation system. First, use the AHP method and the TOPSIS method to combine and assign weights. Then use the TOPSIS method to determine the degree of closeness to the best and worst substations, score the substations, and the score represents the severity of voltage anomalies. Take the substation itself and the upper distribution network grid indicators and operation indicators as influencing factors to form a relatively complete influencing factor system. Use the AHP method to obtain the subjective weight of each indicator, collect relevant data on all voltage abnormal substations in the power grid, use the TOPSIS method to determine the objective weight of each influencing factor, and use the minimum information drop principle to obtain the combined weight.

[0028] Step 3: Using the reactive equipment status real-time monitoring module and information processing display platform, the measurement and control module monitors the reactive equipment status and operation data of the distribution substation area, and accesses the reactive equipment status monitoring platform through the two-way wireless communication protocol. Through the platform, the operation status of the substation area is mastered, the reactive equipment switching is controlled, and the rationality of the reactive equipment switching strategy is analyzed;

[0029] Step 4: Find out the reactive equipment linkage analysis optimization algorithm suitable for large-scale distribution lines, study the commonly used reactive optimization algorithms, determine the optimal position of reactive equipment and voltage regulator and the gear of voltage regulator; the reactive optimization algorithm is a two-stage reactive optimization algorithm based on distribution partitioning and integer particle swarm optimization; first, identify the partitions of the distribution line to achieve "reactive local balance" in the reactive weak area; in the second stage, use the hierarchical structure of the distribution line to select the nearest common ancestor node in the voltage-reactive transition zone and set the line voltage regulator; in the third stage, use integer particle swarm optimization to calculate the optimal gear of the line voltage regulator; the voltage regulator includes a voltage regulating cabinet 1, an installation slot 2, and a cold plate 3. , heat pipe 4, voltage regulating module 5, fan heat fin 6, shield 7, protective net 8, heat dissipation hole 9, hinge 10, cabinet door 11, handle 12, control button 13, display screen 14, U-shaped buffer plate 15, wear-resistant block 16, spring 17 and anti-slip protrusion 18, the interior of the voltage regulating cabinet 1 is provided with a plurality of mounting grooves 2, a plurality of cold plates 3 are fixed on the inner wall of the bottom end of the mounting groove 2, a plurality of heat pipes 4 are installed on both sides of the cold plate 3, and one end of the heat pipe 4 is inserted into the cold plate 3, a voltage regulating module 5 is installed on the top outer wall of the cold plate 3, and a fan heat fin 6 is fixed on one end of the heat pipe 4 passing through the outer wall of the voltage regulating cabinet 1. The structure is relatively simple, which is convenient for the voltage regulating module 5 The heat dissipation effect is relatively good, which increases the service life of the equipment; a plurality of hinges 10 are fixed on one side of the voltage regulating cabinet 1, a cabinet door 11 is fixed on the outer wall between the hinges 10, a handle 12 is fixed on one side of the cabinet door 11, a control button 13 is installed on the outer wall of the cabinet door 11 on the side of the handle 12, and a display screen 14 is installed on the outer wall of the cabinet door 11 above the control button 13, which is relatively complete and convenient for operating the equipment; U-shaped buffer plates 15 are fixed on the four corners of the bottom end of the voltage regulating cabinet 1, springs 17 are fixed between the inner walls of the U-shaped buffer plates 15, and wear-resistant blocks 16 are welded on the outer wall of the bottom end of the U-shaped buffer plates 15, which are resistant to A plurality of anti-slip protrusions 18 are fixed on the outer wall of the bottom end of the grinding block 16, which is more practical and complete. During transportation or installation, the vibration and shaking of the voltage regulator are reduced, so that the internal parts of the voltage regulator will not be damaged; protective covers 7 are fixed on both sides of the voltage regulating cabinet 1 corresponding to the heat-dissipating fins 6, and the heat-dissipating fins 6 are located in the protective covers 7, and a protective net 8 is inlaid on the outer wall of one side of the protective cover 7, which is convenient for protecting the heat-dissipating fins 6 and can also effectively prevent the heat-dissipating fins 6 from falling on the dust, affecting the heat dissipation, which is more practical; a heat dissipation hole 9 is opened through the outer wall of one side of the voltage regulating cabinet 1 corresponding to the installation groove 2, and the heat dissipation hole 9 is connected with the installation groove 2, which further improves the heat dissipation effect of the equipment.

[0030] The preferred embodiments of the invention disclosed above are only used to help illustrate the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can better understand and use the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for monitoring and linking analysis of reactive equipment in a distribution network, characterized in that: The following steps are involved: Step 1: Collect real-time operation data and meter power data of each monitoring point in the distribution network; Step 2: Establish a distribution network power supply voltage index evaluation system. First, use the analytic hierarchy process (AHP) and the power method to combine and assign weights. Then use the TOPSIS method to determine the degree of closeness to the best and worst substations, and score the substations. The score represents the severity of voltage anomalies. The substation itself and the upper-level distribution network grid indicators and operation indicators are taken as influencing factors to form an influencing factor system. Step 3: Using the reactive equipment status real-time monitoring module and information processing display platform, the measurement and control module monitors the reactive equipment status and operation data of the distribution substation area, and accesses the reactive equipment status monitoring platform through the two-way wireless communication protocol. Through the platform, the operation status of the substation area is mastered, the reactive equipment switching is controlled, and the rationality of the reactive equipment switching strategy is analyzed; Step 4, find out the reactive equipment linkage analysis optimization algorithm suitable for large-scale distribution lines, study the commonly used reactive optimization algorithms, determine the optimal position of reactive equipment and voltage regulator and the gear of voltage regulator; in the step 2, use the hierarchical analysis method AHP to obtain the subjective weight of each indicator, collect relevant data of all voltage abnormality areas of the power grid, use the entropy method to determine the objective weight of each influencing factor, and use the minimum information drop principle to obtain the combined weight; in the step 4, the reactive optimization algorithm is a two-stage reactive optimization algorithm based on distribution partitioning and integer particle swarm optimization; first, identify each partition of the distribution line to achieve "reactive local balance" in the reactive weak area; in the second stage, use the hierarchical structure of the distribution line to select the nearest common ancestor node in the voltage-reactive transition zone and set the line voltage regulator; in the third stage, use the integer particle swarm optimization to calculate the optimal gear of the line voltage regulator; in the step 4, the voltage regulator includes a voltage regulating cabinet (1), an installation slot (2), a cold plate (3), a heat pipe (4), a voltage regulating module (5), a fan heat fin (6), a shield (7), a protective net (8), a heat dissipation hole (9), a hinge ( 10), a cabinet door (11), a handle (12), a control button (13), a display screen (14), a U-shaped buffer plate (15), a wear-resistant block (16), a spring (17) and an anti-slip protrusion (18), wherein a plurality of mounting grooves (2) are provided inside the voltage regulating cabinet (1), a plurality of cold plates (3) are fixed on the inner wall at the bottom end of the mounting groove (2), a plurality of heat pipes (4) are installed on both sides of the cold plate (3), and one end of the heat pipe (4) is inserted into the cold plate (3), and a voltage regulating plate (15) is installed on the outer wall at the top end of the cold plate (3). A module (5), a heat-fanning fin (6) is fixed to one end of the heat pipe (4) passing through the outer wall of the voltage regulating cabinet (1); a plurality of hinges (10) are fixed to one side of the voltage regulating cabinet (1); a cabinet door (11) is fixed to the outer wall between the hinges (10); a handle (12) is fixed to one side of the cabinet door (11); a control button (13) is installed on the outer wall of the cabinet door (11) located on the side of the handle (12); and a display screen (14) is installed on the outer wall of the cabinet door (11) located above the control button (13).

2. A distribution network reactive equipment monitoring and linkage analysis method according to claim 1, characterized in that: A U-shaped buffer plate (15) is fixed to the four corners of the bottom end of the voltage regulating cabinet (1), a spring (17) is fixed between the inner walls of the U-shaped buffer plate (15), a wear-resistant block (16) is welded to the outer wall of the bottom end of the U-shaped buffer plate (15), and a plurality of anti-slip protrusions (18) are fixed to the outer wall of the bottom end of the wear-resistant block (16).

3. A distribution network reactive equipment monitoring and linkage analysis method according to claim 1, characterized in that: Shields (7) are fixed on both sides of the voltage regulating cabinet (1) corresponding to the heat-fanning fins (6), and the heat-fanning fins (6) are located inside the shields (7). A protective net (8) is inlaid on one side outer wall of the shield (7).

4. A distribution network reactive equipment monitoring and linkage analysis method according to claim 1, characterized in that: A heat dissipation hole (9) is provided on an outer wall of one side of the voltage regulating cabinet (1) corresponding to the mounting groove (2), and the heat dissipation hole (9) is in communication with the mounting groove (2).

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