CN209748263U - Intelligent safe standby power supply system - Google Patents

Abstract

The utility model relates to an intelligent safe standby power supply system, which comprises a first voltage detection circuit, a first current detection circuit, an intelligent circuit breaker, a double-power transfer switch, a lithium battery, a MCU, a storage battery, a relay, a DC-DC transfer module, a generator set, a second voltage detection circuit and a second current detection circuit, wherein the intelligent circuit breaker and the generator set are respectively connected with the double-power transfer switch, the first voltage detection circuit is connected with commercial power, the first current detection circuit is connected with the intelligent circuit breaker, the storage battery is connected with the generator set through the relay and the DC-DC transfer module, the second voltage detection circuit and the second current detection circuit are respectively connected with the generator set, the power generating set, the double-power-supply change-over switch, the intelligent circuit breaker, the lithium battery, the relay, the first voltage detection circuit, the first current detection circuit, the two voltage detection modules and the second current detection circuit are respectively connected with the MCU. The utility model provides a generating set full load power supply cause extravagant problem.

Description

Intelligent safe standby power supply system

Technical Field

The utility model relates to a power supply unit technical field especially relates to an intelligent safe stand-by power supply system.

Background

At present, electric power systems in many remote rural areas in China are weak, the stability of the electric power systems is poor, for example, when a thunder is struck, a power grid is easily influenced by thunder and lightning to rise, and the voltage of the power grid rises to cause damage to electric equipment such as televisions, computers and the like; for another example, in holidays, such as spring festival, the power supply voltage of the power grid is insufficient due to the increase of the electric equipment, and the safe use of the electric equipment is not facilitated. Therefore, some households can configure the generator equipment for use as needed, the generator equipment is generally manually connected into a household power grid after power failure, the generator equipment is disconnected after the power grid is restored, and then the power grid is restored.

SUMMERY OF THE UTILITY MODEL

Therefore, to foretell problem, the utility model provides an intelligent safe stand-by power supply system solves the full-load power supply of generator equipment and causes extravagant problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an intelligent safe stand-by power supply system, includes first voltage detection circuit, first current detection circuit, intelligent circuit breaker, dual supply change over switch, lithium cell, MCU, battery, relay, DC-DC conversion module, generating set, second voltage detection circuit, second current detection circuit, generating set includes the diesel engine and the synchronous generator who uses with the diesel engine is supporting, dual supply change over switch's first input is connected with intelligent circuit breaker's output electricity, the commercial power is connected to intelligent circuit breaker's input, dual supply change over switch's output is connected the load, the commercial power is connected to first voltage detection circuit's input, first current detection circuit's input is connected with intelligent circuit breaker's output electricity, dual supply change over switch's control end, intelligent circuit breaker's control end, first voltage detection circuit's output and first current detection circuit's output respectively with MCU's input The lithium battery is electrically connected with a power supply end of the MCU, the storage battery is connected with an excitation current input end of the synchronous generator sequentially through the relay and the DC-DC conversion module, an output end of the synchronous generator is electrically connected with a second input end of the dual-power-supply conversion switch, an input end of the second voltage detection circuit is electrically connected with an output end of the synchronous generator, an input end of the second current detection circuit is electrically connected with an output end of the synchronous generator, and the diesel engine, the DC-DC conversion module, a control end of the relay, an output end of the second voltage detection circuit and an output end of the second current detection circuit are respectively electrically connected with an input end of the MCU.

Furthermore, the intelligent power supply device further comprises a phase detection circuit, wherein the input end of the phase detection circuit is connected with the mains supply, and the output end of the phase detection circuit is electrically connected with the input end of the MCU.

Furthermore, the touch screen is further included and is in communication connection with the MCU.

By adopting the technical scheme, the beneficial effects of the utility model are that: the intelligent safe standby power system detects the voltage of commercial power and transmits the voltage to the MCU through the first voltage detection circuit, detects the total current of a load in a family and transmits the total current to the MCU through the first current detection circuit, the MCU calculates the total power of the load in the family, when the first voltage detection circuit detects that the commercial power voltage is abnormal, the MCU controls the relay to be conducted, the generator set starts to generate power, the second voltage detection circuit detects that the output voltage of the generator set reaches the value of the commercial power voltage, and when the phase detection circuit detects that the commercial power voltage is in a zero phase, the MCU controls the double power supply changeover switch to switch the power supply to supply power to the generator set, the second current detection circuit detects the output current of the generator set, the MCU controls the output voltage of the DC-DC conversion module to control the excitation voltage of the generator set, thereby changing the output, so as to achieve the purpose of energy conservation. Furthermore, a user can also control the switching between the commercial power supply and the double power supplies of the generator set through the touch screen.

Drawings

Fig. 1 is a circuit connection block diagram of an embodiment of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1, this embodiment provides an intelligent safe standby power supply system, which includes a first voltage detection circuit 1, a first current detection circuit 2, an intelligent circuit breaker 3, a dual power transfer switch 4, a lithium battery 5, an MCU6, a storage battery 7, a relay 8, a DC-DC conversion module 9, a generator set 10, a second voltage detection circuit 11, a second current detection circuit 12, a phase detection circuit 13, and a touch screen 14, where the generator set 10 includes a diesel engine 101 and a synchronous generator 102 used in cooperation with the diesel engine 101, the dual power transfer switch 4 employs an ATS automatic transfer switch, the dual power transfer switch 4 includes a first input end, a second input end, and an output end, the MCU6 employs an ATM89C51 single chip microcomputer, the first voltage detection circuit 1 and the second voltage detection circuit 11 are used to detect circuit voltage and transmit the circuit voltage to the MCU6, the first current detection circuit 2 and the second current detection circuit 12 detect circuit current and transmit the circuit current to the MCU6, the electronic components and the circuit modules are all known devices.

The first input end of the dual-power transfer switch 4 is electrically connected with the output end of the intelligent circuit breaker 3, the input end of the intelligent circuit breaker 3 is connected with a mains supply, the output end of the dual-power transfer switch 4 is connected with a load, and the mains supply is a power supply of the same kind. The input end of the first voltage detection circuit 1 is connected with the mains supply, and the first voltage detection circuit 1 detects the voltage of the mains supply. The input end of the first current detection circuit 2 is electrically connected with the output end of the intelligent circuit breaker 3, and the first current detection circuit 2 detects the output current of the intelligent circuit breaker 3. The control end of the double-power-supply change-over switch 4 and the control end of the intelligent circuit breaker 3 are respectively electrically connected with the input end of the MCU6, the double-power-supply change-over switch 4 is controlled to switch power supply through the MCU6, and the intelligent circuit breaker 3 is controlled to be switched on or switched off through the MCU 6. The output end of the first voltage detection circuit 1 and the output end of the first current detection circuit 2 are respectively electrically connected with the input end of the MCU6, and the detected voltage and current are respectively transmitted to the MCU 6. The lithium battery 5 is electrically connected with a power supply end of the MCU6, and the lithium battery 5 supplies power for the MCU 6.

The storage battery 7 is connected with an excitation current input end of the synchronous generator 102 sequentially through the relay 8 and the DC-DC conversion module 9, an output end of the synchronous generator 102 is electrically connected with a second input end of the dual power supply conversion switch 4, an input end of the second voltage detection circuit 11 is electrically connected with an output end of the synchronous generator 102, an input end of the second current detection circuit 12 is electrically connected with an output end of the synchronous generator 102, and the diesel engine 101, the DC-DC conversion module 9, a control end of the relay 8, an output end of the second voltage detection circuit 11 and an output end of the second current detection circuit 12 are respectively electrically connected with an input end of the MCU 6. The electronic components and the circuit modules are connected with each other through the input end, the output end and the control end, the connection mode is simple, and the connection technology among the electronic components and the circuit modules is a technical means known in the field.

The intelligent safe standby power supply system detects the voltage of commercial power through a first voltage detection circuit 1 and transmits the voltage to an MCU6, detects the total current of loads in a household through a first current detection circuit 2 and transmits the total current to an MCU6, the MCU6 calculates the total power of the loads in the household, when the first voltage detection circuit 1 detects that the commercial power voltage is abnormal, the MCU6 controls a relay 8 to be conducted, a generator set 10 starts to generate power, a second voltage detection circuit 11 detects that the output voltage of the generator set reaches the value of the commercial power voltage, and a phase detection circuit 13 detects that the commercial power voltage is in a zero phase, the MCU6 controls a double-power-supply changeover switch 4 to switch a power supply to supply power for the generator set, a second current detection circuit 12 detects the output current of the generator set, the MCU6 controls the output voltage of a DC-DC conversion module 9 to control the excitation voltage of the generator set 10, thereby changing the output, so as to achieve the purpose of energy conservation. When the first voltage detection circuit 1 detects that the voltage of the mains supply is normally supplied and the phase detection circuit 13 detects that the voltage of the mains supply is in a zero phase, the MCU6 controls the dual power supply changeover switch 4 to switch the power supply to supply the mains supply, and at the same time, the MCU6 controls the generator set 10 to stop supplying power.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. The utility model provides an intelligent safe standby power system which characterized in that: the power generation system comprises a first voltage detection circuit, a first current detection circuit, an intelligent circuit breaker, a dual-power change-over switch, a lithium battery, an MCU, a storage battery, a relay, a DC-DC conversion module, a power generation unit, a second voltage detection circuit and a second current detection circuit, wherein the power generation unit comprises a diesel engine and a synchronous generator matched with the diesel engine for use, a first input end of the dual-power change-over switch is electrically connected with an output end of the intelligent circuit breaker, an input end of the intelligent circuit breaker is connected with commercial power, an output end of the dual-power change-over switch is connected with a load, an input end of the first voltage detection circuit is connected with the commercial power, an input end of the first current detection circuit is electrically connected with an output end of the intelligent circuit breaker, a control end of the dual-power change-over switch, a control end of the intelligent circuit, the lithium battery is electrically connected with a power supply end of the MCU, the storage battery is connected with an excitation current input end of the synchronous generator sequentially through the relay and the DC-DC conversion module, an output end of the synchronous generator is electrically connected with a second input end of the dual-power-supply conversion switch, an input end of the second voltage detection circuit is electrically connected with an output end of the synchronous generator, an input end of the second current detection circuit is electrically connected with an output end of the synchronous generator, and the diesel engine, the DC-DC conversion module, a control end of the relay, an output end of the second voltage detection circuit and an output end of the second current detection circuit are respectively electrically connected with an input end of the MCU.

2. The intelligent safe standby power supply system according to claim 1, wherein: still include phase detection circuit, the commercial power is connected to phase detection circuit's input, phase detection circuit's output is connected with MCU's input electricity.

3. An intelligent safety backup power supply system according to claim 1 or 2, characterized in that: the touch screen is in communication connection with the MCU.