CN103066679B - Universal communication base station solar and wind energy centralized power supply system and control method thereof - Google Patents

Abstract

The invention relates to a general-purpose communication base station solar wind energy centralized power supply system and a control method thereof, belonging to the fields of new energy power generation technology and energy saving technology. The main circuit of the new energy centralized power supply of the communication base station and the monitor of the communication base station are implemented to provide new energy power supply for the AC and DC power supply system of the original communication base station. This patent adopts an embedded computer communication base station monitor composed of computer control technology and artificial intelligence technology to realize intelligent monitoring and control. The designed solar MPPT controller and wind energy controller can detect the power generation voltage of solar panels and wind energy generators in real time, and track the highest voltage value, so that the system can achieve the highest efficiency. The designed inverter is based on DSP full digital control technology, high frequency SPWM technology and advanced IGBT module, which makes the system more efficient.

Description

A general-purpose communication base station solar wind energy centralized power supply system and its control method

technical field

The invention relates to a general-purpose communication base station solar wind energy centralized power supply system and a control method thereof, belonging to the fields of new energy power generation technology and energy saving technology.

Background technique

The base station is a public mobile communication base station, which is a form of wireless communication station. It refers to a radio transceiver station that transmits information between mobile phone terminals through a mobile communication switching center in a certain radio coverage area. The construction of mobile communication base stations is an important part of the investment of mobile communication operators in my country. The construction of mobile communication base stations is generally carried out around factors such as coverage, call quality, investment benefits, difficulty of construction, and convenient maintenance.

At present, the energy-saving and emission-reducing new energy power supply system technical scheme implemented for the AC and DC power supply system of the communication base station mainly uses the wind energy engine as the original power supply system to supplement the new energy power, and the DC voltage output by the fan controller is directly connected to the AC and DC of the communication base station. In the power supply system, the rectifier output DC bus is connected in parallel, and the mains power supply is still the main power supply, which does not achieve the purpose of fully utilizing new energy. On the other hand, if the wind energy engine supplies power to the communication equipment and at the same time charges the storage battery, the power of the wind energy engine needs to be increased, resulting in high investment cost and low utilization rate. In addition, this technical solution requires the modification of some connecting lines of the existing communication base station AC and DC power supply system.

In order to reduce the cost of solar or wind energy new energy power generation, the characteristics of different areas and capacities of the communication base station power supply system are fully considered, and at the same time, there is no need to modify part of the connecting lines of the existing communication base station AC and DC power supply system, and in the most direct way. The introduction of solar or wind energy new energy power supply into the communication base station, its positioning is very clear, that is, the original mains AC and DC power supply system of the communication base station realizes the principle of using new energy as the main power supply mode and the mains power grid power supply mode as the supplementary method, which plays a real role. Use new energy to achieve energy saving and emission reduction. According to the needs of communication base stations, through the selection of new energy supply methods using solar and wind energy, the base station's consumption of conventional energy can be reduced, and carbon emissions and pollutant gas emissions caused by the use of conventional energy can be reduced, making full use of new energy.

Therefore, it is the common expectation of the industry to design a general-purpose communication base station solar and wind energy centralized power supply system that is suitable for the different needs and capacities of communication base station AC and DC power supply systems.

Contents of the invention

In view of the above problems, the present invention provides a general-purpose communication base station solar wind energy centralized power supply system and its control method, so that the communication base station AC and DC power supply system can make full use of new energy, and has higher security. At the same time, the equipment is simple and has Features such as energy saving and emission reduction, low cost, high efficiency, versatility, and easy integration.

The technical solution adopted in the present invention: the power supply system is mainly composed of a communication base station new energy centralized power supply main circuit 100, a communication base station monitor 200 and a communication base station AC/DC power supply system 300; the communication base station new energy centralized power supply main circuit 100 includes solar cells 101, Solar MPPT controller 102 , inverter 103 , transfer switch 104 , external storage battery 105 , wind energy generator 106 , fan controller 107 , and mains grid 108 . The communication base station monitor 200 includes a control circuit 201 , a sampling circuit 202 , a drive circuit 203 , an RS-485 communication port 204 , an inverter voltage detection circuit 205 , a mains grid voltage detection circuit 206 , and a switching power supply voltage detection circuit 207 . Communication base station AC and DC power supply system 300 consists of AC distribution box 301, switching power supply 302, communication equipment 303, internal battery 305, uninterruptible power supply 306, air conditioner 307, lighting 308, socket 309, mobile oil generator 310 and surge protector 311 composition. The communication base station new energy centralized power supply main circuit 100 and the communication base station monitor 200 provide new energy power supply to the communication base station AC and DC power supply system 300 .

In the general-purpose communication base station new energy centralized power supply system, the system adopts the solar centralized power supply mode. The output signal of the solar cell 101 is connected to the input signal of the solar MPPT controller 102, and the solar MPPT controller 102 is used for the output of the solar cell. output DC voltage after the maximum power point tracking control of the voltage, on the one hand to charge the external storage battery 105, and on the other hand to provide DC voltage for the inverter 103 after being connected in parallel with the external storage battery 105;

In the general-purpose communication base station new energy centralized power supply system, the system adopts the wind energy centralized power supply mode, the output signal of the wind energy engine 106 is connected with the input end signal of the fan controller 107, and the fan controller 107 is used for the output of the wind energy engine 106 After the voltage is controlled, the DC voltage is output. On the one hand, the external battery 105 is charged, and on the other hand, it is connected in parallel with the external battery 105 and the solar MPPT controller 102 to provide a DC voltage for the inverter 103 .

The input signal of the external storage battery 105 is connected to the output signal of the solar MPPT controller 102 and the wind turbine controller 107, and the input signal of the inverter 103. When, the external battery 105 provides power for the inverter 103; the input signal of the inverter 103 is connected with the output signal of the solar MPPT controller 102, the fan controller 107 and the external battery 105, and the DC voltage provided by them is converted into AC voltage; the input signal of the changeover switch 104 is connected with the output signal of the drive circuit 203 in the inverter 103, the mains power grid 108 and the communication base station monitor 200, and according to the control command of the communication base station monitor 200, the inverter is selected The switch 103 or the mains grid 108 provides power for the communication base station AC and DC power supply system 300, and the output signal of the transfer switch 104 is connected to the input signal of the AC distribution box 301 of the communication base station AC and DC power supply system 300.

The solar MPPT controller 102 and the fan controller 107 of the new energy centralized power supply main circuit 100 of the communication base station are the solar MPPT controller 102 and the fan controller 107 with the maximum power point tracking control function.

In the communication base station monitor 200 in the general-purpose communication base station new energy centralized power supply system, the input signal of the sampling circuit 202 is connected with the inverter voltage detection circuit 205 of the communication base station new energy centralized power supply main circuit 100 and the mains grid The voltage detection circuit 206 is connected to the output signal of the switching power supply voltage detection circuit 207 of the communication base station AC/DC power supply system 300, and the output signal of the sampling circuit 202 is connected to the input signal of the control circuit 201; the control with independent CPU control function The output terminal signal of the circuit 201 is connected with the input terminal signal of the drive circuit 203, the input terminal signal of the control circuit 201 is connected with the input terminal signal of the RS-485 communication port 204 of the sampling circuit 202 and the upper computer, according to whether the parameters of the sampling circuit 202 Normally, the control judgment is carried out, and the output control command is sent to the drive circuit 203; the output signal of the drive circuit 203 is connected to the input signal of the transfer switch 104 in the main circuit 100, and is output to the transfer switch 104 by increasing the power of the control signal .

  The control method of communication base station monitor 200 comprises the following steps:

a) The sampling circuit 202 passes through the inverter voltage detection circuit 205, the mains power grid voltage detection circuit 206, the switching power supply voltage detection circuit 207, the AC voltage of the inverter 103 in the sampling main circuit 100 and the mains power grid 108, and communication The DC voltage of the switching power supply 302 in the AC/DC power supply system 300 of the base station;

b) the control circuit 201 judges whether the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal;

When the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal, the output control command of the control circuit 201 is sent to the drive circuit 203, and the transfer switch 104 in the main circuit 100 is driven by the drive circuit 203 , let the output power of the inverter 105 provide power to the communication base station AC and DC power supply system 300 through the transfer switch 104, and return to step a);

When the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains power grid 108 are not normal, proceed to step c);

c) The control loop 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal;

When the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal, and the host computer has no "fast charge" command, the control circuit 201 outputs a control command to the drive circuit 203, and the conversion in the main circuit 100 is controlled by the drive circuit 203 Switch 104, turn on the output power of the inverter 105, disconnect the output power of the mains power grid 108, provide power to the communication base station AC and DC power supply system 300 by the inverter 105, and return to step a);

When the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are abnormal, proceed to step d);

d) The control loop 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are normal;

If the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are normal, and the upper computer has a "fast charge" command, the control circuit 201 outputs a control command to the drive circuit 203, and the drive circuit 203 controls the conversion in the main circuit 100 The switch 104 disconnects the output power of the inverter 105, connects the output power of the mains power grid 108, and the mains power grid 108 provides AC power to the communication base station AC and DC power supply system 300, and returns to step a);

When the DC voltage of the switching power supply 302 and the output voltage of the mains power grid 108 are not normal, proceed to step e);

e) The control loop 201 judges whether the DC voltage of the switching power supply is normal;

When the DC voltage of the switching power supply is normal, and the host computer does not have a "quick charge" command, the AC voltage of the inverter is abnormal, and the AC voltage of the utility grid is normal, the control loop 201 outputs a control command to the drive circuit 203, through the drive circuit Control the transfer switch 104 in the main circuit 100, disconnect the output power of the inverter 105, connect the output power of the mains power grid 108, and provide the AC power supply to the communication base station AC and DC power supply system 300 by the mains power grid 108, and the upper computer Issue a fault message and return to step a);

When the DC voltage of the switching power supply is abnormal, go to step f);

f) If the DC voltage of the switching power supply is abnormal, the control circuit 201 outputs a control command to the drive circuit 203, and the drive circuit controls the transfer switch 104 in the main circuit 100 to disconnect the output power of the inverter 105 and the mains grid 108 , stop supplying AC power to the communication base station AC and DC power supply system 300, send a fault message to the host computer, and return to step a).

Described solar cell 101, solar MPPT controller 102, inverter 103, transfer switch 104, external storage battery 105, wind energy generator 106, fan controller 107, mains grid 108, control circuit 201, sampling circuit 202, driving circuit 203, RS-485 communication port 204, inverter voltage detection circuit 205, switching power supply voltage detection circuit 206 and mains grid voltage detection circuit 207, etc., except that solar battery 101 and wind energy engine 106 are common common Except for equipment, the rest are products and equipment researched and developed by myself.

Beneficial effects of the present invention: the patent adopts an embedded computer communication base station monitor composed of computer control technology and artificial intelligence technology to realize intelligent monitoring and control. The designed solar MPPT controller and wind energy controller can detect the power generation voltage of solar panels and wind energy generators in real time, and track the highest voltage value, so that the system can achieve the highest efficiency. The designed inverter is based on DSP full digital control technology, high frequency SPWM technology and advanced IGBT module, which makes the system more efficient.

a) Realize the reasonable scheduling of solar or wind energy new energy power supply and mains grid power supply, so as to maximize the power generation of new energy and maximize the energy saving effect.

b) Realize effective system rational configuration and integration, and save the capacity of solar panels or fans while ensuring and meeting the power consumption requirements of base station communication equipment.

c) Realize intelligent monitoring and automatic control between new energy power supply and mains grid power supply.

d) Realize low cost, high efficiency, continuity, safety and generality under any position and layout of communication base stations.

At the same time, this patent determines the control strategy and control algorithm of the communication base station monitor, and compiles and develops the software and hardware of the corresponding control and communication system. lower and more efficient.

Description of drawings

Fig. 1 is a schematic diagram of the circuit structure of the present invention.

Fig. 2 is a control flow chart of the present invention.

In the figure: 100-main circuit of new energy centralized power supply system of communication base station, 101-solar battery, 102-solar MPPT controller, 103-inverter, 104-transfer switch, 105-external storage battery, 106-wind energy engine, 107- Fan controller, 108-mains grid, 200-communication base station monitor, 201-control circuit, 202-sampling circuit, 203-drive circuit, 204-communication port RS-485, 205-inverter voltage detection circuit, 206 - Mains grid voltage detection circuit, 207-switching power supply voltage detection circuit, 300-communication base station AC and DC power supply system, 301-AC distribution box, 302-switching power supply, 303-communication equipment, 305-internal storage battery, 306-not Interrupted power supply, 307-air conditioner, 308-lighting, 309-socket, 310-mobile oil generator, 311-surge protector.

Detailed ways

Below in conjunction with accompanying drawing and embodiment this patent is described further.

As shown in Figure 1, the power supply system is mainly composed of a communication base station new energy centralized power supply main circuit 100, a communication base station monitor 200 and a communication base station AC/DC power supply system 300; the communication base station new energy centralized power supply main circuit 100 includes solar cells 101, solar energy MPPT controller 102 , inverter 103 , transfer switch 104 , external storage battery 105 , wind energy generator 106 , fan controller 107 , and mains grid 108 . The communication base station monitor 200 includes a control circuit 201 , a sampling circuit 202 , a drive circuit 203 , an RS-485 communication port 204 , an inverter voltage detection circuit 205 , a mains grid voltage detection circuit 206 , and a switching power supply voltage detection circuit 207 . Communication base station AC and DC power supply system 300 consists of AC distribution box 301, switching power supply 302, communication equipment 303, internal battery 305, uninterruptible power supply 306, air conditioner 307, lighting 308, socket 309, mobile oil generator 310 and surge protector 311 composition. The communication base station new energy centralized power supply main circuit 100 and the communication base station monitor 200 provide new energy power supply to the communication base station AC and DC power supply system 300 .

In the general-purpose communication base station new energy centralized power supply system, the system adopts the solar centralized power supply mode. The output signal of the solar cell 101 is connected to the input signal of the solar MPPT controller 102, and the solar MPPT controller 102 is used for the output of the solar cell. output DC voltage after the maximum power point tracking control of the voltage, on the one hand to charge the external storage battery 105, and on the other hand to provide DC voltage for the inverter 103 after being connected in parallel with the external storage battery 105;

In the general-purpose communication base station new energy centralized power supply system, the system adopts the wind energy centralized power supply mode, the output signal of the wind energy engine 106 is connected with the input end signal of the fan controller 107, and the fan controller 107 is used for the output of the wind energy engine 106 After the voltage is controlled, the DC voltage is output. On the one hand, the external battery 105 is charged, and on the other hand, it is connected in parallel with the external battery 105 and the solar MPPT controller 102 to provide a DC voltage for the inverter 103 .

The input signal of the external storage battery 105 is connected to the output signal of the solar MPPT controller 102 and the wind turbine controller 107, and the input signal of the inverter 103. , the external storage battery 105 provides power for the inverter 103;

The input signal of the inverter 103 is connected with the output signal of the solar MPPT controller 102, the fan controller 107 and the external storage battery 105, and the DC voltage they provide is converted into an AC voltage; the input signal of the transfer switch 104 is connected with the inverter The inverter 103, the mains power grid 108 and the output terminal signal connection of the drive circuit 203 in the communication base station monitor 200, according to the control instruction of the communication base station monitor 200, select the inverter 103 or the mains power grid 108 to supply AC and DC power for the communication base station The system 300 provides power, and the output signal of the transfer switch 104 is connected to the input signal of the AC distribution box 301 of the communication base station AC and DC power supply system 300 .

The solar MPPT controller 102 and the fan controller 107 of the new energy centralized power supply main circuit 100 of the communication base station are the solar MPPT controller 102 and the fan controller 107 with the maximum power point tracking control function.

In the communication base station monitor 200 in the general-purpose communication base station new energy centralized power supply system, the input signal of the sampling circuit 202 is connected with the inverter voltage detection circuit 205 of the communication base station new energy centralized power supply main circuit 100 and the mains grid The voltage detection circuit 206 is connected to the output signal of the switching power supply voltage detection circuit 207 of the communication base station AC/DC power supply system 300, and the output signal of the sampling circuit 202 is connected to the input signal of the control circuit 201; the control with independent CPU control function The output terminal signal of the circuit 201 is connected with the input terminal signal of the drive circuit 203, the input terminal signal of the control circuit 201 is connected with the input terminal signal of the RS-485 communication port 204 of the sampling circuit 202 and the upper computer, according to whether the parameters of the sampling circuit 202 Normally, the control judgment is carried out, and the output control command is sent to the drive circuit 203; the output signal of the drive circuit 203 is connected to the input signal of the transfer switch 104 in the main circuit 100, and is output to the transfer switch 104 by increasing the power of the control signal .

Example 1

As shown in Figure 2: the control method of the communication base station monitor 200 includes the following steps:

a) The sampling circuit 202 passes through the inverter voltage detection circuit 205, the mains power grid voltage detection circuit 206, the switching power supply voltage detection circuit 207, the AC voltage of the inverter 103 in the sampling main circuit 100 and the mains power grid 108, and communication The DC voltage of the switching power supply 302 in the AC/DC power supply system 300 of the base station;

b) The control circuit 201 judges whether the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal; If the AC voltage is abnormal, go to step c);

c) The control loop 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal;

When the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are abnormal, proceed to step d);

d) The control circuit 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are normal; when the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are abnormal, proceed to step e);

e) The control loop 201 judges whether the DC voltage of the switching power supply is normal; when the DC voltage of the switching power supply is abnormal, enter step f);

f) If the DC voltage of the switching power supply is abnormal, the control circuit 201 outputs a control command to the drive circuit 203, and the drive circuit controls the transfer switch 104 in the main circuit 100 to disconnect the output power of the inverter 105 and the mains grid 108 , stop supplying AC power to the communication base station AC and DC power supply system 300, send a fault message to the host computer, and return to step a).

Example 2

As shown in Figure 2: the control method of the communication base station monitor 200 includes the following steps:

a) The sampling circuit 202 passes through the inverter voltage detection circuit 205, the mains power grid voltage detection circuit 206, the switching power supply voltage detection circuit 207, the AC voltage of the inverter 103 in the sampling main circuit 100 and the mains power grid 108, and communication The DC voltage of the switching power supply 302 in the AC/DC power supply system 300 of the base station;

b) the control circuit 201 judges whether the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal;

When the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal, the output control command of the control circuit 201 is sent to the drive circuit 203, and the transfer switch 104 in the main circuit 100 is driven by the drive circuit 203 , let the output power of the inverter 105 provide power to the communication base station AC and DC power supply system 300 through the transfer switch 104, and return to step a);

Example 3

As shown in Figure 2: the control method of the communication base station monitor 200 includes the following steps:

a) The sampling circuit 202 passes through the inverter voltage detection circuit 205, the mains power grid voltage detection circuit 206, the switching power supply voltage detection circuit 207, the AC voltage of the inverter 103 in the sampling main circuit 100 and the mains power grid 108, and communication The DC voltage of the switching power supply 302 in the AC/DC power supply system 300 of the base station;

b) The control circuit 201 judges whether the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal; If the AC voltage is abnormal, go to step c);

c) The control loop 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal;

When the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal, and the host computer has no "fast charge" command, the control circuit 201 outputs a control command to the drive circuit 203, and the conversion in the main circuit 100 is controlled by the drive circuit 203 Switch 104, turn on the output power of the inverter 105, disconnect the output power of the mains power grid 108, provide power to the communication base station AC and DC power supply system 300 by the inverter 105, and return to step a);

Example 4

The control method of communication base station monitor 200 comprises the following steps:

a) The sampling circuit 202 passes through the inverter voltage detection circuit 205, the mains power grid voltage detection circuit 206, the switching power supply voltage detection circuit 207, the AC voltage of the inverter 103 in the sampling main circuit 100 and the mains power grid 108, and communication The DC voltage of the switching power supply 302 in the AC/DC power supply system 300 of the base station;

b) The control circuit 201 judges whether the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal; If the AC voltage is abnormal, go to step c);

c) The control loop 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal;

When the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are abnormal, proceed to step d);

d) The control circuit 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are normal; if the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are normal, and the host computer has a "fast charge" command, Then the control loop 201 outputs control instructions to the drive circuit 203, and the transfer switch 104 in the main loop 100 is controlled by the drive circuit 203, the output power of the inverter 105 is disconnected, the output power of the mains power grid 108 is connected, and the mains power grid 108 provide AC power to the communication base station AC and DC power supply system 300, and return to step a);

Example 5

The control method of communication base station monitor 200 comprises the following steps:

a) The sampling circuit 202 passes through the inverter voltage detection circuit 205, the mains power grid voltage detection circuit 206, the switching power supply voltage detection circuit 207, the AC voltage of the inverter 103 in the sampling main circuit 100 and the mains power grid 108, and communication The DC voltage of the switching power supply 302 in the AC/DC power supply system 300 of the base station;

b) The control circuit 201 judges whether the DC voltage of the switching power supply 302, the voltage of the inverter 103 and the AC voltage of the mains grid 108 are normal; If the AC voltage is abnormal, go to step c);

c) The control circuit 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are normal; when the DC voltage of the switching power supply 302 and the output voltage of the inverter 103 are abnormal, proceed to step d);

d) The control circuit 201 judges whether the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are normal; when the DC voltage of the switching power supply 302 and the output voltage of the mains grid 108 are abnormal, proceed to step e);

e) The control circuit 201 judges whether the DC voltage of the switching power supply is normal; when the DC voltage of the switching power supply is normal, and the host computer does not have a "fast charge" command, the AC voltage of the inverter is abnormal, and the AC voltage of the mains grid is normal, then The control loop 201 outputs the control command to the drive circuit 203, controls the transfer switch 104 in the main loop 100 through the drive circuit, cuts off the output power of the inverter 105, connects the output power of the mains power grid 108, and is supplied by the mains power grid 108 to The communication base station AC and DC power supply system 300 provides AC power, sends fault information to the host computer, and returns to step a);

This patent is explained through the specific implementation process. Without departing from the scope of this patent, various transformations and equivalent substitutions can be made to this patent. Therefore, this patent is not limited to the disclosed specific implementation process, but should include All embodiments that fall within the scope of the patent claims.

Claims (1)

1. the control method of communication base station monitoring device in Universal communication base station new forms of energy central power supply system, electric power system forms primarily of communication base station new forms of energy centrally connected power supply major loop, communication base station monitoring device and communication base station supplied by AC/DC electricity system; Communication base station new forms of energy centrally connected power supply major loop comprises solar cell, solar energy MPPT controller, inverter, change over switch, outer storage battery, wind-powered engine, controller of fan, utility grid; Communication base station monitoring device comprises control circuit, sample circuit, drive circuit, RS-485 port, contravarianter voltage testing circuit, utility grid voltage detecting circuit, supply voltage switch testing circuit; Communication base station supplied by AC/DC electricity system is made up of A.C. distribution box, Switching Power Supply, communication equipment, interior storage battery, uninterrupted power supply, air-conditioning, illumination, socket, mobile diesel engine and Surge Protector; Communication base station new forms of energy centrally connected power supply major loop and communication base station monitoring device are implemented to provide new energy to communication base station supplied by AC/DC electricity system; The solar energy MPPT controller of communication base station new forms of energy centrally connected power supply major loop and controller of fan are solar energy MPPT controller and the controller of fan with MPPT maximum power point tracking controlling functions; It is characterized in that:

The control method of communication base station monitoring device comprises the following steps:

A) sample circuit is by the alternating voltage of the inverter in contravarianter voltage testing circuit, utility grid voltage detecting circuit, supply voltage switch testing circuit sampling communication base station new forms of energy central power supply system major loop and utility grid, and the direct voltage of communication base station supplied by AC/DC electricity system breaker in middle power supply;

B) control circuit judges that whether the alternating voltage of the direct voltage of Switching Power Supply, the alternating voltage of inverter and utility grid is normal;

When the alternating voltage of the direct voltage of Switching Power Supply, the alternating voltage of inverter and utility grid is normal, then control circuit exports control command to drive circuit, the change over switch in communication base station new forms of energy central power supply system major loop is driven by drive circuit, allow the out-put supply of inverter provide power supply by change over switch to communication base station supplied by AC/DC electricity system, and return step a);

When the alternating voltage of the direct voltage of Switching Power Supply, the alternating voltage of inverter and utility grid is abnormal, then enter step c);

C) control circuit judges that whether the alternating voltage of the direct voltage of Switching Power Supply and inverter is normal;

When the direct voltage of Switching Power Supply and the alternating voltage of inverter normal, and host computer is without " quick charge " instruction, then control circuit exports control command to drive circuit, the change over switch in communication base station new forms of energy central power supply system major loop is controlled by drive circuit, connect the out-put supply of inverter, disconnect the out-put supply of utility grid, provide power supply by inverter to communication base station supplied by AC/DC electricity system, and return step a);

When the direct voltage of Switching Power Supply is abnormal with the alternating voltage of inverter, then enter step d);

D) control circuit judges that whether the alternating voltage of the direct voltage of Switching Power Supply and utility grid is normal;

If the alternating voltage of the direct voltage of Switching Power Supply and utility grid is normal, and host computer has " quick charge " instruction, then control circuit exports control command to drive circuit, the change over switch in communication base station new forms of energy central power supply system major loop is controlled by drive circuit, disconnect the out-put supply of inverter, connect the out-put supply of utility grid, provide AC power by utility grid to communication base station supplied by AC/DC electricity system, and return step a);

When the direct voltage of Switching Power Supply is abnormal with the alternating voltage of utility grid, then enter step e);

E) control circuit judges that whether the direct voltage of Switching Power Supply is normal;

When the direct voltage of Switching Power Supply is normal, and host computer is without " quick charge " instruction, the alternating voltage of inverter is abnormal, and utility grid alternating voltage is normal, then control circuit exports control command to drive circuit, the change over switch in communication base station new forms of energy central power supply system major loop is controlled by drive circuit, disconnect the out-put supply of inverter, connect the out-put supply of utility grid, AC power is provided to communication base station supplied by AC/DC electricity system by utility grid, send fault message to host computer, and return step a);

When the direct voltage of Switching Power Supply is abnormal, then enter step f);

If f) direct voltage of Switching Power Supply is abnormal, then control circuit exports control command to drive circuit, the change over switch in communication base station new forms of energy central power supply system major loop is controlled by drive circuit, disconnect the out-put supply of inverter and utility grid, stop providing AC power in communication base station supplied by AC/DC electricity system, send fault message to host computer, and return step a).