CN204316172U - Compact power switching device shifter - Google Patents

Abstract

The utility model provides a portable power switching device, comprising: a power monitoring module, a judging module and a switch control module, the power monitoring module is connected to the judging module, and the power monitoring module monitors the states of the main power supply and the standby power to generate state information, and Send the status information to the judging module; the judging module is connected with the switch control module, and the judging module judges the power supply situation of the main power supply according to the received status information, and generates the switch control information when the power supply situation meets the threshold requirement, and sends the switch control information Send to the switch control module; the switch control module disconnects the main power supply incoming line switch and closes the standby power supply incoming line switch according to the switch control information. The portable power switching device of the utility model can complete the switching work between the main power supply and the standby power in a short time. The portable power switching device of the utility model has a simple and compact structure and low cost, and is favorable for large-scale industrial application.

Description

Portable Power Switching Device

technical field

The utility model relates to the field of electrical engineering, in particular to a portable power switching device.

Background technique

At present, in some occasions that have strict requirements on stable power supply, such as commercial performances, important conferences and medical services, it is necessary to ensure the stability of power supply. Once the power supply is interrupted, serious adverse consequences will occur.

In order to solve the problem of stable power supply in the above occasions, a dual power supply system has been introduced in the prior art. When one power supply fails to supply power, the system can switch to another power supply to continue supplying power. The dual power supply switching system in the prior art cannot realize the automatic switching of dual power supplies, and still requires on-site operators to manually operate or control the opening and closing switches through remote control. In this case, once the main power supply loses power, it takes a long time to switch to the backup power supply. This can cause brief power outages that can adversely affect critical occasions such as commercial performances, important meetings, and medical services. The dual power supply switching system of the prior art can no longer meet the requirements of important electricity customers for stable power supply, and the cost of the prior art is high, the volume is large, and there are certain difficulties in installation and use.

Therefore, how to effectively improve the power switching efficiency of the dual power supply switching system has become an urgent problem to be solved.

Utility model content

In order to effectively improve the power switching efficiency of the dual power supply switching system, the utility model provides a portable power switching device, including: a power monitoring module, a judging module and a switch control module,

The power monitoring module is connected to the judging module, and the power monitoring module monitors the status of the main power supply and the backup power to generate status information, and sends the status information to the judging module;

The judging module is connected to the switch control module, the judging module judges the power supply status of the main power supply according to the received status information, and generates switch control information when the power supply status meets a threshold requirement, and sending the switch control information to the switch control module;

The switch control module disconnects the incoming switch of the main power supply and closes the incoming switch of the standby power supply according to the switch control information;

The state information includes the phase information of the main power supply and the backup power supply, and the portable power switching device further includes a phase synchronous regulator for adjusting the backup power supply before turning off the main power supply incoming switch and closing the backup power incoming switch The phase of it is synchronized with the phase of the main power supply.

The power supply conditions satisfying the threshold requirements include: the main power supply incoming line switch is off, the main power supply incoming line has no current, the main power supply incoming line has no voltage, the standby power supply voltage is normal, and the standby power supply incoming line switch is in position.

The power monitoring module includes a voltage sampling element and a current sampling element, the voltage sampling element detects the incoming voltage of the main power supply and the voltage of the backup power supply, and the current sampling element detects the incoming current of the main power supply.

The portable power switching device of the utility model can complete the switching work between the main power supply and the backup power in a short time. The portable power switching device of the utility model has a simple and compact structure, is easy to carry and operate, has low cost, has high practicability, and is beneficial to large-scale industrial application.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings on the premise of not paying creative labor.

FIG. 1 is a schematic diagram of a panel of an embodiment of a portable power switching device of the present invention.

FIG. 2 is a schematic diagram of the circuit principle of an embodiment of the portable power switching device of the present invention.

FIG. 3 is a schematic wiring diagram of an embodiment of the portable power switch device of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described implementation Example is a part of embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Fig. 1 is the panel schematic diagram of the embodiment of the portable power switching device of the present utility model, Fig. 2 is the schematic diagram of the circuit principle of the embodiment of the portable power switching device of the present utility model, Fig. 3 is the implementation of the portable power switching device of the present utility model Example wiring diagrams, as shown in Figure 1, Figure 2 and Figure 3, the portable power switching device of this embodiment may include: a power monitoring module, a judgment module, a switch control module and an alarm module.

Specifically, referring to FIG. 2 , from the perspective of circuit principle, the portable power switching device of the present invention can be divided into a power monitoring module, a judging module and a switch control module from the perspective of circuit functions. Since the specific circuit structure belongs to the scope of the prior art, it will not be described in detail here.

The power monitoring module is connected with the judging module, and the power monitoring module monitors the status of the main power supply and the backup power to generate status information, and sends the status information to the judging module.

Specifically, the power monitoring module is connected with the judgment module, and the power monitoring module monitors the main power supply and the backup power in real time, monitors the power supply status of the main power supply and the backup power, and according to the current power supply status of the main power supply and the backup power, or Corresponding state information representing the power supply states of the main power supply and the backup power is generated when the power supply states of the main power supply and the backup power supply change. Then the power monitoring module sends the state information to the judging module.

Preferably, the power monitoring module includes a voltage sampling element and a current sampling element, the voltage sampling element detects the incoming line voltage of the main power supply and the backup power supply voltage, and the current sampling element detects the incoming line current of the main power supply. The power monitoring module may include a voltage sampling element and a current sampling element. The power monitoring module detects the incoming voltage of the main power supply and the voltage of the backup power supply through the voltage sampling element, and detects the incoming current of the main power supply through the current sampling element. The voltage sampling element and the current sampling element may be a voltmeter and an ammeter, or may be a functional module composed of circuit elements performing corresponding functions.

The judging module is connected with the switch control module. The judging module judges the power supply status of the main power supply according to the received status information. When the power supply situation meets the first threshold requirement, the judging module generates information to increase the output power of the backup power supply, which will increase the output power of the backup power supply. Send the information to the backup power supply to increase the output power of the backup power supply; generate switch control information when the power supply situation meets the second threshold requirement, and send the switch control information to the switch control module, and the switch control module disconnects the main power supply according to the switch control information Turn on the incoming line switch and close the standby power incoming line switch.

Specifically, the judging module is connected to the switch control module, and after receiving the status information, the judging module can judge the power supply status of the main power supply according to the received status information. The judging module can generate switch control information for controlling the switch circuit when the power supply of the entire power supply system meets the threshold requirement according to a preset threshold, and send the switch control information to the switch control module for switching the circuit. In order to ensure the continuity and safety of power supply, when the judging module judges that the power supply of the main power supply has a downward trend according to the received status information, it can first make the backup power supply ready in advance (such as increasing the power of the backup power supply) to prevent Insufficient power of the backup power supply causes a large gap in the switching process. When the power supply situation meets the second threshold requirement, it means that the power of the backup power supply has reached the requirement, and smooth switching can be performed.

Preferably, the power supply situation meeting the first threshold requirement specifically includes: the incoming switch of the main power supply is tripped, the incoming line of the main power supply has no current, the incoming line of the main power supply has no voltage, the voltage of the standby power supply is normal, and the incoming switch of the standby power supply is on. bit. The judging module judges that the power supply of the main power supply is abnormal mainly based on the following threshold indicators: the incoming switch of the main power supply is off, the incoming line of the main power supply has no current, the incoming line of the main power supply has no voltage, the voltage of the standby power supply is normal, and the standby power supply The line switch is in position, as long as the five threshold indicators meet any one of the first three, it means that the main power supply is abnormal, and the other two thresholds are mainly to judge whether the backup power supply is normal. When one of the first three thresholds is satisfied, and when the latter two thresholds are both satisfied, it is necessary to switch from the main power supply to the backup power supply, and correspondingly generate switch control information for performing switch control. The threshold value can be set as the current value below 80%, below 75%, below 70%, below 65%, below 60%, below 55%, below 50%, below 45%, below 40% of the rated value of the incoming line current of the main power supply. % or less, 35% or less, or 30% or less. The voltage value is less than 80%, less than 75%, less than 70%, less than 65%, less than 60%, less than 55%, less than 50%, less than 45%, less than 40%, and less than 35% of the rated value of the incoming line voltage of the main power supply below, or below 30%.

Preferably, the power supply situation meeting the second threshold requirement includes: the power of the backup power supply reaches a required value, and the phase of the backup power supply is consistent with that of the main power supply. The judging module can judge whether the backup power supply can transition smoothly with the main power supply through the power of the backup power reaching the required value set according to the actual demand and the phase being consistent with the main power supply, so as not to affect the entire power system. to have a greater impact. According to actual needs, the second threshold may also include other indicators such as current value.

The switch control module turns off the incoming switch of the main power supply and closes the incoming switch of the standby power supply according to the switch control information.

Specifically, after the switch control module receives the switch control information from the judging module, it can directly turn off the incoming switch of the main power supply and close the incoming switch of the standby power supply according to the switch control information. In this way, the switch from the main power supply to the backup power supply can be completed in a timely manner. Generally speaking, according to the technical solution of this embodiment, especially the products manufactured by the circuit shown in FIG. Generally speaking, such a short switching time does not have much impact on the normal operation of electrical equipment for the switching work of the power supply. At the same time, referring to the circuit shown in FIG. 2 , its structure is simple, which can effectively reduce the volume of the device, and can conveniently achieve the function of portability.

The alarm module is connected with the switch control module, and sends out an alarm signal when the switch control module turns off the incoming switch of the main power supply and closes the incoming switch of the backup power supply. Specifically, when the switch control module disconnects the incoming switch of the main power supply and closes the incoming switch of the standby power supply, in order to prompt the operator, an alarm signal can be sent by the alarm module. The alarm signal can be a visible light signal, such as The flashing red light, etc. can also be sound signals, such as beeping, etc., or a mixed signal mixed with light signals and sound signals, such as beeping while the red light is flashing.

The portable power switching device of this embodiment can complete the switching work between the main power supply and the backup power in a short time. The portable power switching device of this embodiment has a simple and compact structure, is easy to carry and operate, has low cost, and has high practicability, which is conducive to large-scale industrial application.

The portable power switching device of the utility model can complete the switching work between the main power supply and the backup power in a short time. The portable power switching device of the utility model has a simple and compact structure, is easy to carry and operate, has low cost, has high practicability, and is beneficial to large-scale industrial application.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (3)

1. a compact power switching device shifter, is characterized in that, comprising: power supply monitoring module, judge module and switch control module,

Described power supply monitoring module is connected with described judge module, and described state information to generate state information, and is sent to described judge module by the state of described power supply monitoring module monitors main electricity and stand-by power supply;

Described judge module is connected with described switch control module, described judge module judges the electric power thus supplied of described main electricity according to the described state information received, and generate switch control rule information when described electric power thus supplied meets threshold requirement, and described switch control rule information is sent to described switch control module;

Described switch control module disconnects main electricity service entrance switch and the stand-by power supply service entrance switch that closes according to described switch control rule information;

Described state information comprises the phase information of main electricity and stand-by power supply, and described compact power switching device shifter also comprises Phase synchronization adjuster for disconnecting main electricity service entrance switch and regulating the phase place of stand-by power supply to make the Phase synchronization of itself and main electricity before the stand-by power supply service entrance switch that closes.

2. compact power switching device shifter according to claim 1, it is characterized in that, described electric power thus supplied meets threshold requirement and comprises: the normal and stand-by power supply service entrance switch of main electricity service entrance switch breaking, main electricity inlet wire no current, main electricity inlet wire no-voltage, backup power source voltage is in a point position.

3. compact power switching device shifter according to claim 1, it is characterized in that, described power supply monitoring module comprises voltage sampling element and current sample element, described voltage sampling element detects described main electricity primary voltage and described backup power source voltage, main electricity inlet wire current described in described current sample element testing.