CN205544296U - Power Quality Control Device - Google Patents

Abstract

The utility model discloses an electric energy quality control device, which belongs to the technical field of electric power. The device includes: a pluggable busbar and at least two compensation modules, the pluggable busbar is provided with at least two connection contacts; the at least two compensation modules communicate with the Pluggable busbars are pluggable connections. The power quality control device provided by the embodiment of the utility model can adjust the capacity of the power quality control device by adjusting the number of plugged compensation modules, which solves the problem of poor flexibility in use of the power quality control device in the related art. The utility model is used for controlling and compensating electric energy quality.

Description

Power Quality Control Device

technical field

The utility model relates to the technical field of electric power, in particular to an electric energy quality control device.

Background technique

The power quality control device is a device installed on the low-voltage side of the transformer in the substation or distribution network, which is used to control and improve the power supply status of the power system and improve the utilization rate of electric energy.

In related technologies, the power quality control device is generally a reactive power compensator. The reactive power compensator is generally composed of multiple sets of capacitors connected in parallel. The parallel capacitors can suppress the grid harmonics and compensate the grid to a capacitive state, thereby improving power quality. The power quality of the system.

However, the power quality control device in the related art is composed of fixed-capacity shunt capacitors, and the use flexibility of the power quality control device is poor.

Utility model content

In order to solve the problem of poor use flexibility of the power quality control device in the related art, the utility model provides a power quality control device. Described technical scheme is as follows:

The utility model provides a power quality control device, which comprises:

A pluggable busbar and at least two compensation modules, the pluggable busbar is provided with at least two connection contacts;

The at least two compensation modules are detachably connected to the pluggable busbar through the connection contacts.

Optionally, at least two connection contacts provided on the pluggable busbar are static contacts;

Each compensation module is provided with a moving contact;

Each of the compensation modules is connected to a static contact on the pluggable busbar through the moving contact.

Optionally, the device also includes:

Centralized monitoring module;

The centralized monitoring module is electrically connected to the pluggable busbar and the at least two compensation modules respectively, and is used for monitoring the number of compensation modules connected to the pluggable busbar.

Optionally, the device also includes:

isolating switch;

The isolating switch is electrically connected to the pluggable busbar.

Optionally, the device further includes: a housing;

The pluggable busbar, the centralized monitoring module and the isolating switch are arranged in the housing.

Optionally, five connecting contacts are arranged on the pluggable busbar.

Optionally, the compensation module is a reactive power compensation module or an active filter module.

Optionally, the device also includes: a circuit breaker;

The circuit breaker is electrically connected to the pluggable busbar;

Optionally, the reactive power compensation module is a static var generator SVG.

The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

The utility model provides a power quality management device, which comprises a pluggable busbar and at least two compensation modules, the pluggable busbar is provided with at least two connection contacts; the at least two compensation modules pass through the connection contacts The head is pluggably connected to the pluggable busbar, so the power quality control device can adjust the number of compensation modules in the power quality control device according to the grid capacity, which improves the flexibility of the power quality control device in use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a front view of a power quality control device provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the front view of another power quality control device provided by the embodiment of the present invention;

Fig. 3 is a side view schematic diagram of a power quality control device provided by an embodiment of the utility model.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a power quality control device provided by an embodiment of the present invention. As shown in Fig. 1, the device includes:

Pluggable busbar 10 and at least two compensation modules 20, for example, in the power quality control device shown in FIG. A connection contact (not shown in the figure), through which the at least two compensation modules 20 are pluggably connected to the pluggable busbar 10. In order to ensure the effective connection between the compensation module and the pluggable busbar 10, generally, the number of connection contacts provided on the pluggable busbar 10 is greater than or equal to the number of compensation modules.

To sum up, a power quality control device provided by the utility model includes a pluggable busbar and at least two compensation modules, and the at least two compensation modules are pluggable and pluggable with the pluggable busbar through connecting contacts. Therefore, the power quality control device can adjust the number of compensation modules plugged into the power quality control device according to the grid capacity of the currently applied power system, so that the capacity of the power quality control device matches the grid capacity, improving the Flexibility when using the power quality control device.

It should be noted that the power quality management device provided by the embodiment of the utility model can be installed on the low-voltage side of the transformer in the substation or distribution network, and is used to detect the load current in the distribution network. In the case of reactive power components, the power quality control device can generate compensation current through the compensation module, and input the compensation current to the power distribution network, thereby achieving the effect of compensating the reactive power of the power grid and improving the power supply quality of the power system.

Optionally, the at least two connection contacts provided on the pluggable busbar 10 may be static contacts; and each compensation module may be provided with a moving contact; The static contact connection on the plug busbar 10.

It should be noted that, in practical applications, the compensation module 20 can also be connected to the pluggable busbar through a customized plug connector.

Optionally, as shown in Figure 2, the device may also include: a centralized monitoring module 30;

The centralized monitoring module 30 is electrically connected to the pluggable busbar 10 and the at least two compensation modules 20 respectively, for example, through a cable connection, and the centralized monitoring module 30 is used to monitor the pluggable busbar 10. The number of compensation modules 20.

In the embodiment of the present invention, the number of target modules can be preset in the centralized monitoring module. A warning message is issued to remind the operator to check the power quality control device, so as to avoid the power quality control device from not working properly due to poor contact between the compensation module and the pluggable busbar. The power quality management device can plug and unplug the compensation module while the power is on. When the compensation module is pulled out with power on, the centralized monitoring module will issue a warning message, but it will not affect the normal operation of other modules. After the compensation module is pulled out, the target module can be reset When the capacity of the power quality control device cannot meet the actual compensation capacity required by the power grid, a new compensation module can be inserted into the power quality control device, and the new compensation module can be connected to the available Plug and connect the busbars to increase the capacity of the power quality control device. When the newly added compensation module is inserted with power, the centralized monitoring system will send out a warning message, but it will not affect the normal operation of other modules. After the newly added compensation module is inserted , the warning message can be eliminated by resetting the number of target modules, and the newly added compensation module can be put into use.

Optionally, as shown in Figure 2, the device further includes: an isolating switch 40;

The isolating switch 40 is electrically connected to the pluggable busbar 10 , for example, through a cable. The isolating switch 40 is used to isolate the pluggable busbar 10 from the power supply when repairing or maintaining the power quality control device.

Fig. 3 is a side view of the power quality control device provided by the embodiment of the present invention. As shown in Fig. 3, the device also includes: a housing 50;

The pluggable busbar 10 , the centralized monitoring module 30 and the isolating switch 40 shown in FIG. 2 may all be arranged in the housing 50 shown in FIG. 3 . It should be noted that, as shown in FIG. 2 , the housing may further include a door 301 movably connected to the main body of the housing, and the centralized monitoring module 30 may be disposed on the door 301 .

In the embodiment of the present invention, the power quality control device may also include: a circuit breaker (not shown in the above drawings); the circuit breaker is electrically connected to the pluggable busbar, when a serious It can automatically cut off the circuit in case of overload, short circuit and undervoltage.

It should be noted that, in the embodiment of the present utility model, considering the height of the power quality control device in practical applications, the pluggable busbar may be provided with five connection contacts, that is, the power quality control device may Plug in five compensation modules. Wherein, the compensation module may be a reactive power compensation module or an active filter module, and the reactive power compensation module may be a static var generator (English: Static VarGenerator; SVG for short). SVG adopts power module for reactive power compensation, the power factor after compensation is generally above 0.98, and the compensation speed is fast, its own loss is small, and the compensation effect is good.

To sum up, a power quality control device provided by the utility model includes a pluggable busbar and at least two compensation modules, and the at least two compensation modules are pluggable and pluggable with the pluggable busbar through connecting contacts. Therefore, the power quality control device can adjust the number of compensation modules plugged into the power quality control device according to the grid capacity of the currently applied power system, so that the capacity of the power quality control device matches the grid capacity, improving the Flexibility when using the power quality control device.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (8)

1. A kind of power quality control device, it is characterized in that, described power quality control device is arranged on the low voltage side of transformer in substation or power distribution network, and described device comprises: A pluggable busbar and at least two compensation modules, the pluggable busbar is provided with at least two connection contacts; The at least two compensation modules are pluggably connected to the pluggable busbar through the connecting contacts; the compensation modules are reactive power compensation modules or active filter modules. 2. The device of claim 1, wherein At least two connection contacts provided on the pluggable busbar are static contacts; Each compensation module is provided with a moving contact; Each of the compensation modules is connected to a static contact on the pluggable busbar through the moving contact. 3. The device according to claim 1, further comprising: Centralized monitoring module; The centralized monitoring module is electrically connected to the pluggable busbar and the at least two compensation modules respectively, and is used for monitoring the number of compensation modules connected to the pluggable busbar. 4. The device according to claim 3, further comprising: isolating switch; The isolating switch is electrically connected to the pluggable busbar. 5. The device according to claim 4, further comprising: case; The pluggable busbar, the centralized monitoring module and the isolating switch are arranged in the housing. 6. The device according to any one of claims 1 to 3, characterized in that, Five connecting contacts are arranged on the pluggable busbar. 7. The device according to any one of claims 1 to 3, characterized in that the device further comprises: breaker; The circuit breaker is electrically connected to the pluggable busbar. 8. The device according to any one of claims 1 to 3, characterized in that, The reactive power compensation module is a static var generator SVG.