Thyristor switching module for 10kvTSC
The thyristor cutting module is designed as a compact structure through epoxy casting, which solves the problem of excessive volume of existing devices and achieves the effect of easy installation, maintenance and efficient heat dissipation.
Patent Information
- Application Number
- CN202421845369.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing 10kvTSC uses thyristor cutting device with huge volume and cannot meet the insulation distance requirements of the 10kv system, resulting in huge volume and inconvenient maintenance.
The thyristor cutting module is made into a complete component by epoxy casting. The shell is covered with the charged body, shortening the insulation distance, forming a compact structure, and leaving a heat dissipation channel on the shell to improve heat dissipation performance.
It realizes the compact design of the module, reduces the volume, facilitates installation and maintenance, improves production efficiency and safety, and has good heat dissipation performance.
Smart Images
Figure CN222928101U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power systems, and particularly relates to a thyristor switching module for 10kV TSC. Background Technique
[0002] With the continuous progress of power electronics, energy conservation and control technologies, the wide application of various power rectification and commutation equipment, and the application of a large number of non-linear and time-varying loads, in the 10kV power system, the impact reactive power has increased significantly, seriously affecting the power quality of the power grid and bringing great harm to power users. The existence of a large amount of impact reactive power in the power grid has caused problems such as increased network losses, serious energy waste, large voltage fluctuations, low power factor, and users facing fines from the power department. The original 10kV HVC type compensation device can no longer meet the current situation.
[0003] To solve such problems, a TSC dynamic reactive power compensation device has been introduced in the 10kV power system. It realizes the dynamic compensation of reactive power in the power system, stabilizes the grid voltage, significantly improves the power quality of the system, increases the transmission capacity of the system, protects electrical equipment, increases the utilization rate of electrical equipment, and has a significant impact on the national economy. Therefore, the TSC dynamic reactive power compensation device plays an indispensable and important role in the power system.
[0004] TSC is applicable to occasions where the local voltage fluctuation amplitude is relatively large due to large-range and frequent fluctuating loads in the power supply system, affecting the normal operation of electrical equipment, and for power consumption departments with high requirements for voltage regulation and dynamic reactive power compensation. It can be widely applied to large and medium-sized industrial enterprises where large-range and frequent fluctuating loads are relatively concentrated, such as machinery manufacturing, metallurgy, railway, coal mine, chemical industry, oil field, etc. It has a good compensation effect especially for impact loads such as welders and rolling mills.
[0005] Since the withstand voltage value of a single thyristor cannot meet the requirements of the 10kV system, all 10kV TSC thyristor switching devices adopt the method of connecting multiple thyristors in series. The existing 10kV TSC thyristor switching devices generally adopt a frame structure, and insulating materials are used to fix the radiator and thyristors. Due to the relatively large insulation distance requirements of the 10kV system, the distance between live parts is also relatively large, resulting in a huge device volume. Summary of the Utility Model
[0006] To solve the problems existing in the above background technique, the utility model provides a thyristor switching module for 10kV TSC, which has high integration, small size, convenient maintenance, strong interchangeability, convenient installation, simple structure, and excellent heat dissipation performance.
[0007] The utility model adopts the following technical scheme to solve the technical problem: a thyristor switching module for 10kvTSC, comprising an epoxy casting shell, a wiring copper bar, two wiring terminals and two assemblies, the two assemblies are arranged parallel and opposite to each other, the two assemblies are connected through the wiring copper bar to form a current path, the two wiring terminals are respectively connected to the two assemblies through the wiring copper bar, the current path is formed between the two wiring terminals through the two assemblies, the epoxy casting shell is tightly coated on the outside of the two assemblies and all the wiring copper bars, and the two wiring terminals and the external equipment connection ends protrude from the outside of the epoxy casting shell.
[0008] Each assembly includes an epoxy tube, a heat sink, a thyristor, a voltage-equalizing resistor and a driving board. A plurality of the thyristors are fixedly mounted on the heat sink. The epoxy tube is sleeved on the outside of the heat sink and avoids the thyristor. A driving board is arranged on each of the thyristors. A plurality of thyristors are connected in series through a wiring copper busbar. The two ends of the wiring copper busbar connected between the two assemblies are respectively connected to the two thyristors. A plurality of the voltage-equalizing resistors are fixedly mounted on the outer wall of the epoxy tube. The voltage-equalizing resistors are connected to the thyristors through wires.
[0009] The two ends of the epoxy tube are open, and the epoxy casting shell is cast and covered to avoid the opening to achieve ventilation and heat dissipation. Heat dissipation holes are left on the epoxy casting shell at the positions corresponding to the voltage-equalizing resistor.
[0010] The beneficial effects of the utility model are as follows: the module adopts epoxy casting to make the thyristor switching module into a complete component, which has strong integrity and is easy to install; the epoxy casting method is used to ensure insulation and safety while minimizing the distance between the charged bodies, thereby making the module structure compact and reducing the volume, which is convenient for installation; in addition, the epoxy casting shell of the module is provided with heat dissipation channels for the equalizing resistor and the radiator, which has good heat dissipation performance and high safety in operation; because the module is an integral component, it can be conveniently replaced as a whole during installation and maintenance, thereby improving work efficiency; at the same time, as a universal part, the module has stronger interchangeability; the overall structure of the module is simple, which is convenient for mass production and assembly, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In the attached picture:
[0012] Figure 1 This is a schematic diagram of the structure of the monomer assembly of the utility model (the epoxy casting shell is hidden in the figure);
[0013] Figure 2 This is a schematic diagram of the positional relationship of the assembly of the utility model (the epoxy casting shell is hidden in the figure);
[0014] Figure 3 It is a schematic diagram of the overall structure of the utility model;
[0015] In the figure: 1. Epoxy tube; 2. Radiator; 3. Thyristor; 4. Voltage-equalizing resistor; 5. Wiring copper busbar; 6. Wiring terminal; 7. Driver board; 8. Epoxy cast shell. DETAILED DESCRIPTION
[0016] The utility model is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are all simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0017] A thyristor switching module for 10kv TSC includes an epoxy casting shell 8, a wiring copper bar 5, two wiring terminals 6 and two assemblies. The two assemblies are arranged parallel to each other, and the two assemblies are connected through the wiring copper bar 5 to form a current path. The two wiring terminals 6 are respectively connected to the two assemblies through the wiring copper bar 5, and a current path is formed between the two wiring terminals 6 through the two assemblies. The epoxy casting shell 8 is tightly covered on the outside of the two assemblies and all the wiring copper bars 5, and the two wiring terminals 6 and the external equipment connection ends protrude from the outside of the epoxy casting shell 8.
[0018] Each assembly includes an epoxy tube 1, a heat sink 2, a thyristor 3, a voltage-equalizing resistor 4 and a driving board 7. A plurality of thyristors 3 are fixedly mounted on the heat sink 2. The epoxy tube 1 is sleeved on the outside of the heat sink 2 and avoids the thyristor 3. A driving board 7 is arranged on each thyristor 3. A plurality of thyristors 3 are connected in series through a wiring copper bus 5. The two ends of the wiring copper bus 5 connected between two assemblies are respectively connected to two thyristors 3. A plurality of voltage-equalizing resistors 4 are fixedly mounted on the outer wall of the epoxy tube 1. The voltage-equalizing resistors 4 are connected to the thyristor 3 through a wire.
[0019] Each of the driving boards 7 is detachably fixed on the thyristor 3 by screws, each of the wiring copper bars 5 is fixedly connected between two thyristors 3 by screws, and the heat sink 2 is detachably fixed in the epoxy tube 1 by screws.
[0020] The two ends of the epoxy tube 1 are open, and the epoxy casting shell 8 is cast and covered to avoid exposure to achieve ventilation and heat dissipation. Heat dissipation holes are left on the epoxy casting shell 8 at the position corresponding to the voltage-equalizing resistor 4.
[0021] Working principle: When the module is put into specific application, it is arranged at the required position and the wiring connection is completed through the wiring terminal 6, so that the module can be used in specific application.
[0022] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A thyristor switching module for 10kvTSC, characterized in that: The invention comprises an epoxy casting shell (8), a copper wiring bar (5), two wiring terminals (6) and two assemblies. The two assemblies are arranged parallel to each other. The two assemblies are connected through the copper wiring bar (5) to form a current path. The two wiring terminals (6) are respectively connected to the two assemblies through the copper wiring bar (5). The two assemblies form a current path between the two wiring terminals (6). The epoxy casting shell (8) tightly covers the outside of the two assemblies and all the copper wiring bars (5). The connection ends of the two wiring terminals (6) and the external equipment protrude from the outside of the epoxy casting shell (8).
2. A 10kv TSC thyristor switching module according to claim 1, characterized in that: Each assembly comprises an epoxy tube (1), a heat sink (2), a thyristor (3), a voltage-equalizing resistor (4) and a driving board (7); a plurality of the thyristors (3) are fixedly mounted on the heat sink (2); the epoxy tube (1) is sleeved on the outside of the heat sink (2) and avoids the thyristor (3); a driving board (7) is arranged on each of the thyristors (3); a plurality of the thyristors (3) are connected in series via a wiring copper bar (5); the two ends of the wiring copper bar (5) connected between two assemblies are respectively connected to two thyristors (3); a plurality of the voltage-equalizing resistors (4) are fixedly mounted on the outer wall of the epoxy tube (1); and the voltage-equalizing resistors (4) are connected to the thyristors (3) via a wire.
3. A 10kv TSC thyristor switching module according to claim 2, characterized in that: Each of the driving plates (7) is detachably fixed on the thyristor (3) by means of screws, each of the wiring copper bars (5) is fixedly connected between two thyristors (3) by means of screws, and the heat sink (2) is detachably fixed in the epoxy tube (1) by means of screws.
4. A 10kv TSC thyristor switching module according to claim 2, characterized in that: The two ends of the epoxy tube (1) are open, and the epoxy casting shell (8) is cast and covered to avoid the open ends, so as to achieve ventilation and heat dissipation. Heat dissipation holes are left on the epoxy casting shell (8) at positions corresponding to the voltage-equalizing resistor (4).