CN107104506A - A kind of emergency power generation automatic switching system - Google Patents

Abstract

An emergency power generation automatic switching system according to the present invention includes a power supply line side switch, an intelligent control box, and emergency power generation equipment. The intelligent control box has an independent power module that can work normally when the power is cut off. The pulse oscillation circuit generates a high level when the power supply line fails, and generates a low level pulse when the power supply is restored, which can automatically identify the power supply line at the first time. status. And when the power supply line fails, the alarm information will be sent to the designated terminal to remind relevant personnel to overhaul. According to the change of the high and low levels, the single-chip microcomputer can control the opening or closing of the first switch, the second switch, and the third switch, and quickly connect the emergency power generation equipment to the power supply line to avoid the impact of power failure on users. The independent setting of the first switch, the second switch and the third switch can avoid the two-way influence of the normal power supply of the power supply line and the emergency power generation equipment, and it is integrated in a control box, and the operation steps are simple.

Description

An emergency power generation automatic switching system

technical field

The invention relates to the field of emergency power generation switching, in particular to an emergency power generation automatic switching system.

Background technique

At present, emergency power transmission guarantee work is generally carried out by emergency power generation equipment as a backup power supply system. During the power transmission guarantee period, when the power line fails and the power is cut off, the power maintenance personnel immediately manually disconnect the power line incoming switch, start the emergency generator car or generator at the same time, and then manually close the power switch of the generator car or generator to restore power supply.

During the power supply switching period, the on-duty personnel must first judge whether the line is indeed out of power, and manually operate the switch. Due to the back and forth during the operation process, operational errors during the period may easily lead to secondary power outages, prolonging the recovery time of power transmission, resulting in a significant drop in power quality. At the same time, it also has a greater impact on the user's electrical appliances. The existing emergency power generation switching system has problems such as slow power switching speed and long power outage time.

Contents of the invention

The purpose of the present invention is to propose an automatic switching system for emergency power generation, which has the advantages of automatically switching power sources, greatly shortening the power outage time, and not requiring manual guarding.

In order to achieve the above object, the technical solution adopted in the present invention is:

An emergency power generation automatic switching system, including: a power supply line side switch, an intelligent control box, and emergency power generation equipment; wherein:

Power supply line side switch, the input end is connected to the power supply line, and the output end is connected to the load end;

The intelligent control box is connected to the power supply line and the load end in parallel with the switch on the power supply line side, and further includes: an intelligent detection control circuit, a first switch, a second switch, and a third switch;

Intelligent detection and control circuit, including power supply module, single-chip microcomputer, reset circuit, pulse oscillation circuit, wireless transceiver circuit module;

The power supply module is connected to the power supply line, and is equipped with a battery to store electric energy. When a failure occurs on the power supply line side, the battery provides electric energy as a power supply unit;

The pulse oscillation circuit detects the voltage change of the power supply line. When the voltage drops to a low voltage value, a high-level pulse is generated and sent to the microcontroller; when the voltage rises to a stable value, a low-level pulse is generated and sent to the microcontroller;

The reset circuit makes the microcontroller reset and enter the working state;

The output end of the single-chip microcomputer is connected with the first switch, the second switch, the third switch, and the power supply line side switch;

The first switch has one end connected to the input end of the switch on the power supply line side, and one end connected to the second switch and the third switch;

The second switch has one end connected to the first switch and the third switch, and one end connected to the emergency power generation equipment;

The third switch, one end is connected with the first switch and the second switch, and one end is connected with the output end of the power supply line side switch;

When the single-chip microcomputer receives a high-level pulse, control the switch on the power supply line side to open, control the first switch to open, control the second switch and the third switch to close, and send an instruction to start the emergency power generation equipment ;

When the single-chip microcomputer receives a low-level pulse, control the switch on the power supply line side to close, control the first switch to close, and control the third switch and the second switch to open;

When the single-chip microcomputer receives the high-level pulse, it sends the signal to the wireless transceiver circuit module, and the wireless transceiver circuit module generates alarm information and sends it to a designated terminal in the form of wireless transmission.

The third switch is connected with a clock circuit module, and when the single-chip microcomputer sends a disconnection command, the third switch is controlled to be disconnected after a set time.

A monitoring module is also provided between the third switch and the emergency power generation equipment circuit, further comprising:

The voltage detection module records the voltage value. When the voltage change value reaches the set value, an alarm is generated and the data forwarding module is notified to send the alarm information to the designated device;

The current detection module records the current value;

The time detection module records the power generation time of emergency equipment;

The power consumption calculation module summarizes the data of the voltage detection module, current detection module, and duration detection module to calculate the power consumption of power generation. When the power consumption of power generation reaches the set value, it notifies the data forwarding module to send the power consumption information of power generation to the designated device;

The data forwarding module has a storage unit for recording statistical data of the voltage detection module, current detection module, and duration detection module and calculation data of the power consumption calculation module, and is provided with a wired data interface and a wireless transmission interface.

The emergency power generation equipment is also externally connected with a protection module, if it is detected that the output voltage of the emergency power generation equipment is lower than the set value, the connection between the emergency power generation equipment and the third switch is forcibly disconnected.

The panel of the intelligent control box is provided with a switch state indication unit, which displays the states of the power supply line side switch, the first switch, the second switch, and the third switch.

Compared with the prior art, the present invention has the following beneficial effects:

1. An emergency power generation automatic switching system according to the present invention includes a power supply line side switch, an intelligent control box, and emergency power generation equipment. Sudden large-scale fluctuations affect electrical appliances at the load end. The intelligent control box has an independent power module that can work normally when the power is cut off. The pulse oscillation circuit generates a high level when the power supply line fails, and generates a low level pulse when the power supply is restored, which can automatically identify the power supply line at the first time. status. And when the power supply line fails, the alarm information will be sent to the designated terminal to remind the relevant personnel to overhaul. According to the change of the high and low levels, the single-chip microcomputer can control the opening or closing of the first switch, the second switch, and the third switch, and quickly connect the emergency power generation equipment to the power supply line to avoid the impact of power failure on users. The independent setting of the first switch, the second switch, and the third switch can avoid the two-way influence of the normal power supply of the power supply line and the emergency power generation equipment, and avoid the danger of short circuit. At the same time, the number of switches is reduced compared with the existing technology, and integrated in one In the control box, the operation steps are simple.

2. An emergency power generation automatic switching system according to the present invention, the clock circuit module connected to the third switch can delay the disconnection of the emergency power generation equipment and the load end, so that the normal power supply of the power supply line and the emergency power supply coexist for a period of time , to ensure a smooth handover when the power supply is restored, to achieve zero-flicker switching to the main line power supply, and to ensure the stability of power consumption at the load end.

3. An emergency power generation automatic switching system according to the present invention is also equipped with a monitoring module, which can monitor changes in voltage, current, and power consumption, and avoid failures caused by excessive use of emergency power generation equipment. It can also be obtained at any time through the data interface. Monitoring data for reference.

4. In the emergency power generation automatic switching system described in the present invention, the emergency power generation equipment is also externally connected with a protection module. If the output voltage of the emergency power generation equipment does not meet the requirements, the path with the load end will be forcibly cut off to ensure the stability of power consumption at the load end.

5. The emergency power generation automatic switching system described in the present invention can intuitively display the status of each switch, which is convenient for daily inspection personnel to check and repair.

Description of drawings

Fig. 1 is the structural block diagram of a kind of automatic switching system of emergency power generation of the present invention;

Fig. 2 is a structural block diagram of an intelligent control box of an emergency power generation automatic switching system according to the present invention.

Reference signs are: 1-power supply line side switch; 2-intelligent control box; 3-emergency power generation equipment; 22-first switch; 23-second switch; 24-third switch; 211-power module; 212-single-chip microcomputer ; 213-reset circuit; 214-pulse oscillation circuit; 215-wireless transceiver circuit module.

detailed description

The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

As shown in Figure 1-2, an emergency power generation automatic switching system of the present invention includes: power supply line side switch 1, intelligent control box 2, emergency power generation equipment 3; wherein:

The switch 1 on the side of the power supply line has an input end connected to the power supply line, and an output end connected to the load end.

The intelligent control box 2 is connected to the power supply line and the load end in parallel with the switch 1 on the power supply line side, and further includes: an intelligent detection control circuit, a first switch 22 , a second switch 23 , and a third switch 24 .

The intelligent detection control circuit includes a power supply module 211 , a single-chip microcomputer 212 , a reset circuit 213 , a pulse oscillation circuit 214 , and a wireless transceiver circuit module 215 .

The power supply module 211 is connected to the power supply line, and is equipped with a battery to store electric energy. When a failure occurs on the power supply line side, the battery serves as a power supply unit to provide electric energy.

The pulse oscillation circuit 214 detects the voltage change of the power supply line. When the voltage drops to a low voltage value, a high-level pulse is generated and sent to the microcontroller 212; when the voltage rises to a stable value, a low-level pulse is generated and sent to the microcontroller 212.

When the reset circuit 213 is powered on, the single-chip microcomputer 212 is reset and enters the working state.

The output end of the single chip microcomputer 212 is connected with the first switch 22 , the second switch 23 , the third switch 24 and the switch 1 on the side of the power supply line.

One end of the first switch 22 is connected to the input end of the power supply line side switch 1 , and one end is connected to the second switch 23 and the third switch 24 .

The second switch 23 is connected to the first switch 22 and the third switch 24 at one end, and connected to the emergency power generation equipment 3 at one end.

The third switch 24 has one end connected to the first switch 22 and the second switch 23 , and one end connected to the output end of the power supply line side switch 1 .

When the single-chip microcomputer 212 receives a high-level pulse, control the power supply line side switch 1 to open, control the first switch 22 to open, control the second switch 23 and the third switch 24 to close, and send instructions Command the emergency power generation equipment 3 to start.

When the single-chip microcomputer 212 receives a low-level pulse, it controls the power supply line side switch 1 to close, controls the first switch 22 to close, and controls the third switch 24 and the second switch 23 to open. The emergency power generation equipment 3 will automatically shut down if there is no power output within the set time.

When the single-chip microcomputer 212 receives the high-level pulse, the signal is sent to the wireless transceiver circuit module 215, and the wireless transceiver circuit module 215 generates an alarm message and sends it to a designated terminal in the form of wireless transmission. The alarm information can be sent to the designated terminal through the built-in SIM card in the form of SMS or APP message, such as the mobile phone of the relevant maintenance personnel.

An emergency power generation automatic switching system according to the present invention includes a power supply line side switch 1, an intelligent control box 2, and an emergency power generation device 3. The power supply line side switch 1 can cut off the path between the power supply line and the load end to prevent power failure when the power supply is restored. Sudden large-scale fluctuations in voltage have an impact on electrical appliances at the load end. The intelligent control box 2 has an independent power supply module 211 that can work normally when the power is cut off. The pulse oscillation circuit 214 generates a high level when the power supply line fails, and generates a low level pulse when the power supply is restored, which can be automatically activated at the first time. Identify the status of the power supply line. And when the power supply line fails, the alarm information will be sent to the designated terminal to remind the relevant personnel to overhaul. The single-chip microcomputer 212 can control the opening or closing of the first switch 22, the second switch 23, and the third switch 24 according to the change of the high and low levels, and quickly connect the emergency power generation equipment 3 into the power supply line to avoid the impact of power failure on users. The independent setting of the first switch 22, the second switch 23, and the third switch 24 can avoid the two-way influence of the normal power supply of the power supply line and the emergency power generation equipment 3, avoid the danger of short circuit, and reduce the number of switches compared with the prior art. And integrated in a control box, the operation steps are simple.

The third switch 23 is connected with a clock circuit module, and when the single-chip microcomputer 212 sends a turn-off command, the third switch 23 is controlled to turn off after a set time. The clock circuit module connected to the third switch can delay disconnection of the conduction between the emergency power generation equipment 3 and the load end, so that the normal power supply of the power supply line and the emergency power supply coexist for a period of time, ensuring smooth handover when the power supply is restored, and realizing zero flickering of the line Switch to the main line power supply to ensure the stability of power consumption at the load end.

A monitoring module is also provided between the third switch and the line of the emergency power generation equipment 3, further comprising:

The voltage detection module records the voltage value. When the voltage change value reaches the set value, an alarm is generated and the data forwarding module is notified to send the alarm information to the designated device.

The current detection module records the current value.

The duration detection module records the duration of power generation of emergency equipment.

The power consumption calculation module summarizes the data of the voltage detection module, current detection module, and duration detection module to calculate the power consumption of power generation. When the power consumption of power generation reaches the set value, it notifies the data forwarding module to send the power consumption information to the designated device.

The data forwarding module has a storage unit to record the statistical data of the voltage detection module, the current detection module, the duration detection module and the calculation data of the power consumption calculation module, and is provided with a wired data interface and a wireless transmission interface, such as a WIFI transmission interface and a USB transmission interface. Changes in voltage, current, and power consumption can be monitored to avoid failures caused by overuse of emergency power generation equipment 3, and monitoring data can be obtained at any time through the data interface for reference.

The emergency power generation equipment 3 is also externally connected with a protection module. If it is detected that the output voltage of the emergency power generation equipment 3 is lower than the set value, the connection between the emergency power generation equipment 3 and the third switch is forcibly disconnected. If the output voltage of the emergency power generation equipment 3 does not meet the requirements, the path with the load end will be forcibly cut off to ensure the stability of power consumption at the load end.

The panel of the intelligent control box 2 is provided with a switch state indication unit, which displays the states of the power supply line side switch 1 , the first switch 22 , the second switch 23 , and the third switch 24 . It is preferably displayed by an LED indicator light. The status of each switch can be intuitively displayed, which is convenient for daily inspection personnel to overhaul.

The intelligent detection control circuit is also provided with a switch. When the switch is turned off, the intelligent detection control circuit will not control the first switch 22, the second switch 23, the third switch 24, the power supply line side switch 1, and will switch to Manually control the first switch 22 , the second switch 23 , the third switch 24 , and the power supply line side switch 1 .

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.

Claims (5)

1. a kind of emergency power generation automatic switching system, it is characterised in that include：It is supply lines trackside switch, intelligent control box, emergent Generating equipment；Wherein：

Supply lines trackside is switched, input connection supply line, output end connection load end；

Intelligent control box, accesses supply line and load end with the supply lines trackside switch in parallel, further includes：Intelligence inspection Observing and controlling circuit, first switch, second switch, third switch；

Intelligent Measurement controls circuit, includes power module, single-chip microcomputer, reset circuit, pulse oscillation circuit, wireless transceiver circuit mould Block；

Power module, accesses supply line, and is provided with battery storage electric energy, when supply lines trackside breaks down, and battery is made Electric energy is provided for power supply unit；

Pulse oscillation circuit detects the voltage change of supply line, when voltage is reduced to low voltage value, produces high level pulse simultaneously Send to single-chip microcomputer；When voltage is increased to stationary value, produces low level pulse and send to single-chip microcomputer；

Reset circuit causes monolithic processor resetting, into working condition；

Single-chip microcomputer output connection first switch, second switch, third switch, supply lines trackside switch；

First switch, the input of one end access supply lines trackside switch, one end connects with second switch and the 3rd switch；

Second switch, one end connects with first switch and the 3rd switch, and one end connects with emergency plant；

3rd switch, one end connects with first switch and second switch, and the output end that one end is switched with supply lines trackside connects；

When the single-chip microcomputer receives high level pulse, the supply lines trackside is controlled to switch off, control described first is opened Shut-off is opened, and is controlled the second switch and the 3rd switch closure, is sent designated command emergency plant and start；

When the single-chip microcomputer receives low level pulse, the supply lines trackside switch closure is controlled, control described first is opened Close and close, control the 3rd switch and second switch to disconnect；

When the single-chip microcomputer receives high level pulse, wireless transceiver circuit module, wireless transceiver circuit are sent the signal to Module produces warning message and sent in the form of being wirelessly transferred to designated terminal.

2. a kind of emergency power generation automatic switching system according to claim 1, it is characterised in that the 3rd switch connection There is clock circuit module, when the single-chip microcomputer sends open command, control the described 3rd to switch off after setting time.

3. a kind of emergency power generation automatic switching system according to claim 1 or 2, it is characterised in that the 3rd switch Monitoring modular is additionally provided between the emergency plant circuit, is further included：

Voltage detection module, recording voltage value, works as voltage change, when reaching setting value, produces alarm, and notify data forwarding Module sends warning message to designated equipment；

Current detection module, record current value；

Duration detection module, records emergency set generating duration；

Power consumption calculation module, collects voltage detection module, current detection module, the data of duration detection module, calculates generating work( Consumption, when generating power consumption reaches setting value, notifies data forwarding module to send generating power consumption information to designated equipment；

Data forwarding module, with memory cell, recording voltage detection module, current detection module, the system of duration detection module The calculating data with power consumption calculation module are counted, wired data interface and wireless transmission interface is provided with.

4. a kind of emergency power generation automatic switching system according to Claims 2 or 3, it is characterised in that the emergency power generation Equipment is also circumscribed with protection module, if detecting emergency plant output voltage less than setting value, forces to disconnect emergency power generation Equipment couples with the described 3rd switch.

5. a kind of emergency power generation automatic switching system according to claim 3 or 4, it is characterised in that the intelligent control On off state indicating member is provided with case panel, shows that the supply lines trackside switch, the first switch, described second open Pass, the state of the 3rd switch.