CN205304069U - Delivery platform district on 10KV combination formula post - Google Patents

Abstract

A 10KV combined pole-mounted distribution platform area, including a high-voltage cable inlet terminal, the high-voltage cable inlet terminal is connected to a transformer through a lightning arrester, a display, a load switch, and a fuse, and the load switch output terminal is connected to a high-voltage cable outlet terminal. The output of the transformer is connected to a low-voltage control and power distribution device. The low-voltage control and power distribution device includes a metering current transformer, an isolating switch, and the output terminal of the isolating switch is connected in parallel with a current-operated protector, a circuit breaker, and an intelligent capacitor. The secondary side of the transformer is set There is a surge protection switch and a surge protector. The output end of the isolating switch is provided with a measuring current transformer. The components are installed in the control cabinet, and the control cabinet is installed on the pole. Integrating high-voltage switches, fuses, lightning arresters, transformers, low-voltage power distribution, low-voltage metering and collection, it is easy to install, safe and reliable, and can be standardized for production.

Description

A 10KV combined post distribution platform area

technical field

The utility model relates to a 10KV combined post distribution platform area.

Background technique

At present, the current station area mainly adopts separate installations of disconnectors, lightning arresters, drop-in fuses, transformers, and JP cabinet power distribution units, which are connected to each other by high-voltage insulated wires, and finally form an overall station area. Since each live unit is exposed outside, it is easy to cause electricity safety and personal accidents due to various weather and natural disasters. Its safety and reliability are poor, and the installation project is complicated. Since the electrical components are installed separately during installation, many installation brackets are required, and the space occupied is relatively large. It is large and consumes metal materials, which brings a lot of inconvenience to construction and maintenance. Moreover, each electrical component is exposed outside, which is likely to cause electrical safety and personal accidents.

Utility model content

The purpose of this utility model is to provide a 10KV combined post distribution station area, which integrates high-voltage load switch, high-voltage fuse, high-voltage arrester, transformer, low-voltage power distribution, low-voltage reactive power compensation, low-voltage metering and collection. It is easy to install, safe and reliable, and can be standardized for production.

The technical solution adopted to achieve the above purpose includes a high-voltage cable inlet terminal, the high-voltage cable inlet terminal is connected to a transformer through a lightning arrester, a display, a load switch, and a fuse, the load switch output terminal is connected to a high-voltage cable outlet terminal, and the transformer output Connect the low-voltage control and power distribution device. The low-voltage control and power distribution device includes a metering current transformer, an isolating switch, and the output terminal of the isolating switch is connected in parallel with a current-operated protector, a circuit breaker, and an intelligent capacitor. The secondary side of the transformer is provided with a wave Surge protection switch, surge protector, the output end of the isolating switch is provided with a measuring current transformer, the components are installed in the control cabinet, and the control cabinet is installed on the pole.

Beneficial effect

Compared with the prior art, the utility model has the following advantages.

It integrates high-voltage load switch, fuse, lightning arrester, transformer, low-voltage power distribution, reactive power compensation, low-voltage metering and collection. It has the characteristics of convenient installation, safety and reliability, and can be standardized for production.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Figure 1 is a schematic diagram of the electrical principle of the device.

detailed description

The device includes a high-voltage cable inlet terminal 1, as shown in Figure 1, the high-voltage cable inlet terminal 1 is connected to a transformer 7 through a lightning arrester 2, a display 3, a load switch 4, and a fuse 5, and the output terminal of the load switch 4 is connected to a high-voltage cable Outlet terminal 6, the output of the transformer 7 is connected to a low-voltage control and power distribution device, the low-voltage control and power distribution device includes a metering current transformer 8, an isolating switch 11, and the output terminal of the isolating switch 11 is connected in parallel with a current-operated protector 13 and a circuit breaker 14. Smart capacitor 15, the secondary side of the transformer 7 is provided with a surge protection switch 8 and a surge protector 9, the output end of the isolating switch 11 is provided with a measuring current transformer 12, and the components are installed in the control In the cabinet, the control cabinet is installed on the pole.

The high-voltage cable inlet terminal 1 is installed with a flood-proof and touchable cable joint, the fuse 5 is a high-voltage plug-in fuse, and the lightning arrester 2 is a flood-proof and touchable plug-in lightning arrester.

The transformer 7 is an oil-immersed transformer, and an oil level gauge, a thermometer, and a vacuum gauge are installed on the transformer 7 .

The smart capacitor 15 includes a co-compensation smart capacitor and a split-complement smart capacitor, and the co-complement smart capacitor and the split-complement smart capacitor are connected in parallel.

Example

This device includes high-voltage control part, transformer, low-voltage control and power distribution part, low-voltage metering, reactive power

Compensation and overall outer box shell.

1. Structure

1) It integrates high-voltage fuses, isolating switches, lightning arresters, transformers, low-voltage power distribution, metering and reactive power compensation, and is small in size and easy to install;

2) The high-voltage cable inlet is installed with a flood-proof and touchable cable joint, which avoids many unsafe hidden dangers caused by the exposed high-voltage and low-voltage wiring pile heads in the split installation;

3) The low-voltage part uses a residual current action protector as a power distribution switch to prevent electric shock accidents. Once there is an electric leakage, the switch will automatically trip and close automatically after the fault is eliminated.

2. Function

1) The high-voltage part is turned off by a load switch, which is convenient for transformer inspection and maintenance;

2) The high-voltage plug-in fuse can protect the transformer from overload and short circuit, and it is easy to replace once it is blown;

3) The high voltage part is equipped with oil level gauge, thermometer and vacuum gauge, which can monitor the parameters of the transformer in real time;

4) The low-voltage part is equipped with an isolating switch, which is convenient for maintenance and repair of low-voltage and lines;

5) The low-voltage current action protector can protect the line leakage and load. Once leakage, overload or line short circuit occurs, the switch can trip in time to protect the line and personal safety;

6) Metering meters and monitoring meters are installed at low voltage to monitor the power consumption of loads in real time;

7) Smart capacitors are installed on the low-voltage side, which can perform reactive power compensation for lines and loads, monitor the power factor of loads in real time, and perform tracking compensation in real time, effectively solving the needs of end users for low voltage and reactive power compensation.

According to the current capacity of the station area, it generally does not exceed 400KVA, so the product capacity is divided into two specifications: 100KVA and 200KVA, and the products of the two capacities can be combined to form a variety of specifications;

1) Satisfy the functions of high voltage incoming line safety of station area, transformer disconnection, transformer protection, transformer data monitoring, low voltage side protection, electric energy measurement and collection, reactive power compensation, etc.;

2) The overall layout design of the product achieves small size, reasonable structure, safety and reliability, complete functions, and convenient installation and maintenance;

3) Look for a reasonable overall shape structure. Since the product is installed on a pole, the product must have a symmetrical structure, and the layout of each part must be reasonable;

4) Transformer design: the specific data shall be designed according to the data required by the National Grid;

5) Since the product is installed outdoors, the design of safety performance is very important. Therefore, the high-voltage cable inlet is installed with a flood-proof and touchable cable joint;

6) The high-voltage fuse is a component to realize the protection of the transformer, and it is very important to be easy to install and replace. Therefore, plug-in fuses are used in the design, which is very convenient for installation and replacement;

7) The transformer is oil-immersed. The transformer oil solves the temperature rise of the transformer on the one hand and is used as an insulating material at the same time. Therefore, it is very important to observe the oil temperature and oil level in real time. Therefore, monitoring equipment such as oil level gauges and thermometers are considered to be installed during design;

8) The low-voltage part is considered convenient and safe for maintenance and maintenance, and an isolating switch is installed on the side of the main incoming line, forming an obvious breakpoint;

9) In consideration of line protection and personal safety, residual current action protectors are used for low-voltage outgoing lines as power distribution and protection;

10) The low-voltage general incoming and outgoing lines are equipped with electric energy metering and collection devices, which are convenient for electric energy metering and collection;

11) Smart capacitors are installed on the low-voltage side, which can perform reactive power compensation for lines and loads, monitor the power factor of loads in real time, and perform tracking compensation in real time, effectively solving the needs of end users for low voltage and reactive power compensation.

Claims (4)

1. A 10KV combined pole-mounted distribution platform area, including a high-voltage cable inlet terminal (1), characterized in that the high-voltage cable inlet terminal (1) passes through a lightning arrester (2), a display (3), and a load switch (4), the fuse (5) is connected to the transformer (7), the output terminal of the load switch (4) is connected to the high-voltage cable outlet terminal (6), the output of the transformer (7) is connected to the low-voltage control and power distribution device, and the low-voltage control And the power distribution device includes a metering current transformer (8), an isolating switch (11), a current-operated protector (13), a circuit breaker (14), and an intelligent capacitor (15) connected in parallel at the output end of the isolating switch (11), and the transformer (7) A surge protection switch (8) and a surge protector (9) are provided on the secondary side, and a measurement current transformer (12) is provided at the output end of the isolating switch (11), and the components are installed on In the control cabinet, the control cabinet is installed on the pole. 2. A 10KV combined pole-mounted distribution station area according to claim 1, characterized in that the high-voltage cable inlet terminal (1) is installed with a flood-proof and touchable cable joint, and the fuse (5) is A high-voltage plug-in fuse, the lightning arrester (2) is a flood-proof and touchable plug-in lightning arrester. 3. A 10KV combined pole-mounted distribution station area according to claim 1, characterized in that the transformer (7) is an oil-immersed transformer, and the transformer (7) is equipped with an oil level gauge, a thermometer, a vacuum count. 4. A 10KV combined pole-mounted delivery station area according to claim 1, characterized in that the smart capacitor (15) includes co-compensation smart capacitors and sub-complement smart capacitors, and co-complement smart capacitors and sub-complement smart capacitors The capacitors are connected in parallel.