CN203911494U - Combined intelligent power capacitor device - Google Patents

Abstract

The utility model relates to a combined intelligent power capacitor device and a reactive power compensation system. At present, the maintenance cost of intelligent integrated power capacitor is high, the management is difficult, and the reactive line loss of the line is large. The utility model is characterized in that: the capacitor device includes a base, a power capacitor, an integrated module and a circuit breaker, the integrated module is square and is located at one end of the power capacitor, and the circuit breaker is arranged on the top surface of the power capacitor . In the technical solution, since the integrated module and the power capacitor are assembled, the maintenance cost is reduced and the use safety is improved.

Description

Combined intelligent power capacitor device

technical field

The utility model relates to a reactive power compensation system.

Background technique

The role of the reactive power compensation device in the power supply system is to improve the power factor of the power grid, reduce the loss of power supply transformers and transmission lines, improve power supply efficiency, and improve the power supply environment. The intelligent integrated power capacitor is a new generation of low-voltage reactive power compensation device. It is composed of intelligent integrated modules and power capacitors. It has changed the backward control technology of traditional reactive power compensation devices and the backward switching technology of mechanical contactors as switching devices, and has changed the traditional reactive power compensation devices. And bulky structural mode, so that the intelligent integrated power capacitor has the characteristics of better compensation effect, lower power consumption, smaller mention, and lower cost. However, with the extensive application of intelligent integrated power capacitors, a series of defects in its structural form are gradually exposed:

1. The intelligent integrated module and the power capacitor are the two major components of the intelligent integrated power capacitor. The power capacitor is a vulnerable part, and its actual service life is generally between 2 and 3 years, which is far lower than that of the intelligent integrated module. Since the intelligent integrated power capacitor adopts the maintenance method of overall replacement, the intelligent integrated module is replaced before its lifespan, which greatly increases the maintenance cost.

2. The connecting terminals and display interface of the intelligent integrated power capacitor are respectively placed at both ends of the device. When installing, the display interface faces forward and the connecting terminal faces backward. When the door is not opened behind the low-voltage integrated distribution box, it is not conducive to the wiring and maintenance of the device.

3. The length of the intelligent integrated power capacitor is generally about 360mm, while the effective installation depth of the reactive power compensation room of the integrated distribution box of the distribution transformer is generally less than 360mm. Therefore, the intelligent integrated power capacitor can only be placed horizontally or obliquely, which is not conducive to the wiring and maintenance of the device.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to perfect and improve the existing technical solutions and provide a combined intelligent power capacitor device to achieve the purpose of reducing maintenance costs. For this reason, the utility model takes the following technical solutions.

The combined intelligent power capacitor device is characterized in that: the capacitor device includes a base, a power capacitor, an integrated module and a circuit breaker, the integrated module is square and is located at one end of the power capacitor, and the circuit breaker is located at Top surface of the power capacitor. Since the integrated module and the power capacitor are assembled, when the power capacitor reaches the life limit, only the power capacitor needs to be replaced separately, and the integrated module does not need to be replaced. Reduced maintenance costs.

As a further improvement and supplement to the above technical solution, the utility model also includes the following additional technical features.

A base is provided with two or so discharged power capacitors, an integrated module is provided at the front end of the power capacitor, and a display screen is provided on the front panel of the integrated module. Two power capacitors are placed in parallel, and the terminals are exposed outside for easy disassembly and replacement. The connecting terminal of the power capacitor and the display interface are placed at the same end of the device, which is convenient for wiring and maintenance of the device when the door is not opened behind the low-voltage integrated distribution box. Since two power capacitors are placed side by side, the length of the device can be shortened, so that it can be placed upright in common cabinets and the safety of use can be improved.

The left side of the top plate of the integrated module extends backward to form a wiring part, and the wiring part is provided with six wiring holes, and the A phase and C phase of the circuit breaker are respectively connected to the two wiring holes on the right side of the integrated module. The B phase of the circuit breaker is electrically connected to the B phase of the two power capacitors; the outgoing lines of the four wiring holes on the left side of the integrated module are respectively electrically connected to the A phase and the C phase of the two power capacitors.

The base is provided with a plurality of hoops, and the hoops clamp the left and right sides of the power capacitor to fix the power capacitor on the base, and the integrated module is fixed on the front top of the base through fasteners.

The front top surface of the power capacitor is provided with an upwardly protruding guide rail, and the guide rail is arranged in the left and right directions, and the bottom of the circuit breaker is provided with a guide groove matching the guide rail, and the guide rail and the guide groove match to make the circuit breaker The device is fixed on the front top surface of the power capacitor.

There is a heat dissipation gap between the front end surface of the power capacitor and the rear end surface of the integrated module.

The three-phase terminal of the power capacitor is located on the rear top surface, and the base is formed by bending or welding a metal plate.

Beneficial effects: 1. Since the integrated module and the power capacitor are assembled, when the power capacitor reaches the life limit, only the power capacitor needs to be replaced separately, and the integrated module does not need to be replaced. When the integrated module is damaged, it is similarly only required to be replaced Integrated modules, thus greatly reducing maintenance costs.

2. The connecting terminal of the power capacitor and the display interface are placed at the same end of the device, which is convenient for wiring and maintenance of the device when the door is not opened behind the low-voltage integrated distribution box.

3. Since two power capacitors are placed side by side, the length of the device can be shortened so that it can be placed upright in a common cabinet to improve the safety of use.

Description of drawings

Fig. 1 is a schematic structural diagram of a capacitor device of the present invention.

In the figure: 1- miniature circuit breaker; 2- power capacitor; 4- integrated module; 5- base; 6- hoop; 7- guide rail; 8- display screen; 9- wiring hole.

Detailed ways

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings of the description.

As shown in Figure 1, the utility model comprises base 5, power capacitor 2, integrated module 4 and circuit breaker 1, and described integrated module 4 is square, and it is positioned at one end of power capacitor 2, and described circuit breaker 1 is located at The top surface of the power capacitor 2.

A base 5 is provided with two left and right discharge power capacitors 2 , the front end of the power capacitor 2 is provided with an integrated module 4 , and the front panel of the integrated module 4 is provided with a display screen 8 .

The left side of the top plate of the integrated module 4 extends backwards to form a wiring section, and the wiring section is provided with six wiring holes 3, and the A phase and the C phase of the circuit breaker 1 are respectively connected to two terminals on the right side of the integrated module 4. The wiring holes 3, the B phase of the circuit breaker 1 are electrically connected to the B phases of the two power capacitors 2;

The base 5 is provided with a plurality of hoops 6, and the hoops 6 clamp the left and right sides of the power capacitor 2 so that the power capacitor 2 is fixed on the base 5, and the integrated module 4 is fixed on the base by fasteners 5 on top of the front.

The front top surface of the power capacitor 2 is provided with an upwardly convex guide rail 7, and the guide rail 7 is arranged in the left and right directions. The bottom of the circuit breaker 1 is provided with a guide groove matching the guide rail 7. The guide rail 7 Matching with the guide groove, the circuit breaker 1 is fixed on the front top surface of the power capacitor 2 .

There is a heat dissipation gap between the front end surface of the power capacitor 2 and the rear end surface of the integrated module 4 .

The three-phase terminals of the power capacitor 2 are located on the rear top surface, and the base 5 is formed by bending or welding a metal plate.

The combined intelligent power capacitor device shown in Fig. 1 above is a specific embodiment of the utility model, which has reflected the substantive features and progress of the utility model, and can be used according to actual needs, under the enlightenment of the utility model, to its Equivalent modifications in aspects such as shape and structure are all within the scope of protection of this scheme.

Claims (7)

1. Combined intelligent power capacitor device, characterized in that it includes a base (5), a power capacitor, an integrated module (4) and a circuit breaker (1), the integrated module (4) is square, and it is located on the power capacitor At one end, the circuit breaker (1) is arranged on the top surface of the power capacitor. 2. The combined intelligent power capacitor device according to claim 1, characterized in that: a base (5) is provided with two left and right discharge power capacitors, and the front end of the power capacitor is provided with an integrated module (4), said The front panel of the integrated module (4) is provided with a display screen (8). 3. The combined smart power capacitor device according to claim 2, characterized in that: the left side of the top plate of the integrated module (4) extends backwards to form a routing part, and the routing part has six routings Hole (3), phase A and phase C of the circuit breaker (1) are respectively connected to the two wiring holes (3) on the right side of the integrated module (4), phase B of the circuit breaker (1) and phase B of the two power capacitors Electrical connection; the outgoing lines of the four wiring holes (3) on the left side of the integrated module (4) are respectively electrically connected to the A phase and the C phase of the two power capacitors (2). 4. The combined intelligent power capacitor device according to claim 3, characterized in that: the base (5) is provided with a plurality of hoops (6), and the hoops (6) clamp the power capacitor The power capacitors are fixed on the base (5) on the left and right sides, and the integrated module (4) is fixed on the front top of the base (5) by fasteners. 5. The combined intelligent power capacitor device according to claim 4, characterized in that: the front top surface of the power capacitor is provided with an upwardly convex guide rail (7), and the guide rail (7) is arranged in the left and right directions, The bottom of the circuit breaker (1) is provided with a guide groove matching the guide rail (7), and the guide rail (7) matches the guide groove so that the circuit breaker (1) is fixed on the front top surface of the power capacitor. 6. The combined intelligent power capacitor device according to claim 5, characterized in that there is a heat dissipation gap between the front end surface of the power capacitor and the rear end surface of the integrated module (4). 7. The combined intelligent power capacitor device according to claim 6, characterized in that: the three-phase terminal of the power capacitor is located on the rear top surface, and the base (5) is bent or welded by a metal plate made.