TWI441409B - System for monitoring electricity - Google Patents

Description

Power monitoring system

The present invention relates to a power monitoring system, and further, the present invention is a smart power monitoring system integrated with a plurality of clean energy sources.

In recent years, Taipower has encouraged consumers to set up solar photovoltaics on the roof of their own homes and ensure that the power purchase time for returning to the mains is guaranteed for 20 years. It can be seen that the government hopes that the carbon dioxide emissions in 2025 will return to 2000, and the plan is In 2025, the use of carbon-free renewable energy requires more than 8% of the long-range target. Therefore, the smart micro-grid composed of a variety of renewable energy sources has begun to develop research plans and gradually implement them in various relevant government organizations.

According to statistics, household electricity accounts for about 38% of the nation's electricity consumption. The electricity consumption of water heaters, electric heaters, ventilation equipment and air conditioners accounts for 21% of all household electricity. If these appliances can be developed to have Demand Response is used to implement Demand-Side Management and to develop a system that is both reliable and secure. It will certainly increase the efficiency of electricity consumption and meaningful reduction of greenhouse gas emissions in the future.

So-called clean energy without carbon, such as solar photovoltaic, wind power, fuel cells, etc. Once consumers are installed and used in their own homes with the encouragement of government incentives, the source of household electricity will become diversified. At this time, consumers' electricity habits need to become more active or need to be more conservative. I believe that every consumer will be confused about this situation.

An object of the present invention is to provide a power monitoring system for facilitating user planning power consumption to achieve energy saving according to user settings.

Another object of the present invention is to provide a power monitoring system for monitoring each sub-power system and performing power dispatching.

The invention provides a power monitoring system comprising a plurality of load controllers, a regenerative energy generator, a mains interface and a central control unit. Each of the load controllers is coupled to a load. The renewable energy generator uses a renewable energy source to generate a clean energy power. The mains interface supplies or receives an alternating current. The central control unit is coupled to the load controller, the regenerative energy generator, and the mains interface to preferentially use the clean energy power generated by the regenerative energy generator to be supplied to the load coupled to the load controller. Wherein, when the clean energy generated by the regenerative energy generator is insufficient, at least one specific load controller of the load controller is determined to be turned off according to a user setting to stop the supply of the load coupled to the specific load controller. Wherein, when the clean energy power generated by the regenerative energy generator is sufficient to supply the load coupled to the load controllers to which the load is coupled, the remaining power of the clean energy source can also be fed back to the commercial power by the mains interface.

In addition, the present invention also provides a power monitoring system including: a total renewable energy generator, a total mains interface, a central control unit, and a plurality of sub-central control units. Among them, the total renewable energy generator utilizes a renewable energy source to generate a first clean energy power. The main mains interface supplies or receives a first alternating current. The central control unit is coupled to the regenerative energy generator and the main mains interface. The plurality of sub-central control units are coupled to the central control unit, and each of the sub-central control units is coupled to the plurality of load controllers, the sub-renewable energy generators, and the sub-commercial interfaces. Among them, each load controller is divided into Also coupled to a load. The sub-renewable energy generator utilizes renewable energy to generate second clean energy power. The sub-city interface supplies or receives a second alternating current. Each sub-central control unit is configured to preferentially use the second clean energy power generated by the sub-renewable energy generator to which it is coupled to supply a load coupled to its load controller. Wherein, when the second clean energy generated by the sub-renewable energy generator coupled to one of the sub-central control units is insufficient, the specific sub-determination is determined according to the user setting in the specific sub-central control unit. At least one specific load controller of the load controller of the central control unit is turned off to stop supplying power to the load to which the particular load controller is coupled. Wherein, when the second clean energy power generated by the sub-renewable energy generator coupled by the specific sub-central control unit is still insufficient to supply power, the total central control unit generates the first generated by the total regenerative energy generator Clean energy power is forwarded to the specific sub-central control unit.

The spirit of the present invention is primarily to integrate the sources of power and provide an interface that allows the user to regulate the source of power and regulate the load as desired. Therefore, the power monitoring system proposed by the present invention can plan the most economical power usage plan according to the power of the renewable energy and the habit of the user, so as to achieve the purpose of power saving. Further enhance the user's participation in energy saving and carbon reduction.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

The invention provides a power monitoring system to help consumers conduct energy management It allows consumers to view real-time information on power production and load usage, and allows consumers to plan their own energy-saving plans so that the consumer energy management system can automatically follow the consumer's wishes in the context set by the consumer. Direct Load Control, which allows consumers to understand the results of their planned plans, is a significant improvement in electricity bills, and will certainly increase the incentives for consumers to participate in energy-saving and carbon-reduction programs.

[First Embodiment]

1 is a system block diagram of a power monitoring system 100 in a first embodiment of the present invention. Referring to FIG. 1, the power monitoring system 100 includes a plurality of load controllers 110-1 to 110-2, loads 120-1 to 120-2, a regenerative energy generator 130, a mains interface 140, and a central control unit 150. Each load controller is coupled to a load. In this embodiment, only two load controllers 110-1~110-2 are taken as an example, and the loads 120-1~120-2 are respectively connected. However, the present invention does not limit the number of load and load controllers, and is not limited. The number of loads connected to each load controller. In addition, the load controller may be implemented by a solid state electric or other switch, and the invention is not limited thereto.

The renewable energy generator 130 utilizes a renewable energy source to generate a clean energy power. The mains interface 140 supplies or receives an alternating current, such as the alternating current provided by the station. The central control unit 150 is coupled to the load controllers 110-1 to 110-2, the regenerative energy generator 130, and the mains interface 140 for preferentially using the clean energy power generated by the regenerative energy generator 130 to be supplied to the load 120-1~ 120-2. The central control unit 150 receives the clean energy power generated by the regenerative energy generator 130 and determines whether the clean energy power is sufficient to be supplied to the loads 120-1 to 120-2. When the clean energy generated by the renewable energy generator 130 is insufficient, the central control list Element 150 is supplied with alternating current from mains interface 140 to loads 120-1~120-2. However, in order to achieve power saving, the above user setting can set the limit value of the commercial power and the priority order of the load shutdown. When the central control unit 150 detects that the power supplied by the commercial power supply to the loads 120-1~120-2 exceeds the limit value, the central control unit 150 determines the load controller 110-1 according to the priority order of the load shutdown in the user setting. One of the ~110-2 specific load controllers to stop supplying power to the load to which the particular load controller is coupled.

In the first embodiment of the present invention, when the clean energy generated by the regenerative energy generator 130 is insufficient, the central control unit 150 first turns off part of the load controller according to the priority order of the load shutdown in the user setting. Thereafter, if the clean energy power is still insufficient to supply power to the load coupled to the remaining load controllers, the central control unit 150 causes the mains interface 140 to supply alternating current to the load coupled to the remaining load controllers.

The power monitoring system 100 of FIG. 1 can also include a computer 160 connected to the central control unit 150, and the user can change the user settings through the computer. The user can also use the computer 160 to obtain the current power configuration status or monitor the operation status.

The computer 160 can also be used as a control server. The user uses his personal computer or handheld device to log in to the control server through the network, monitor the operation status of the power monitoring system 100, and know the power configuration status. The user can also change the above user settings after logging in to the control server.

The above-described renewable energy generator 130 is, for example, a solar photovoltaic power generation system and a wind power generation system. The power monitoring system 100 may further include a fuel cell power generation system, and the user setting further includes whether to start the fuel. Battery power generation system. When the clean energy power generated by the regenerative energy generator 130 is insufficient to supply a load or an emergency, the central control unit 150 determines whether to turn on the fuel cell power generation system according to the user setting.

In addition, the power monitoring system 100 may further include a mechanism for estimating the amount of power generated to predict the power generated by the regenerative energy generator 130 based on the current state of the generated energy generated by the regenerative energy generator 130. If the power estimated by the power monitoring system 100 is insufficient to supply the power consumption of the current load, part of the load controller will be turned off to pre-stop power supply to a portion of the load or start the fuel cell power system supply.

In the present embodiment, when the regenerative energy generator 130 is sufficient to supply the loads 120-1 to 120-2, the remaining power of the regenerative energy can be fed back to the manufacturer of the mains supply by the mains interface 140. In addition, the power monitoring system 100 may further include an energy storage device 170 for storing the remaining power of the renewable energy or the nighttime city ionization peak power to the energy storage device. Thereafter, the amount of electricity stored in the energy storage device 170 can be used as backup power. Taking Taipower as an example, Taipower’s electricity tariff method is cheaper than peak power. Therefore, the energy storage device 170 can supply the load to the load during the peak period by storing the energy of the off-peak power. It can save a part of the cost of electricity.

In addition, when the regenerative energy is insufficient to supply the loads 120-1 to 120-2, the amount of electricity in the energy storage device 170 outputs power to the loads 120-1 to 120-2.

Moreover, the system has the function of independent power supply and mains parallel. When there is no mains, for example, when a power outage occurs, the system preferentially supplies the power generated by the energy storage device 170 or the regenerative energy generator 130 to a specific load according to the user's setting, for example, to simulate an integrated circuit. The server (usually needs to operate for half a month, not interruptible).

[Second embodiment]

In the second embodiment of the present invention, a home-based consumer energy management system is proposed, which can use solar photovoltaic, wind power (random type natural energy) to perform electricity meter through a programmable logic controller (PLC). Data collection, Stochastic Dynamic Programming for appliances that can regulate loads (such as lights, fans, air conditioners, etc.), or use of fuel cells (emergency power type clean energy), and emergency Household appliances that can control the load (such as electric lights, fans, etc.) can be used to control and test different situations, and use Human-Machine Interface (HMI) consumers to save energy and use computers for real-time data. The display and storage of historical data allows consumers to understand their important role in improving global warming operations when installing carbon-free clean energy. The main goal of the "smart power monitoring system" in this embodiment is to develop a complex clean energy integrated control system, and can do the most economical distribution and power dispatching, and operate in a clean energy system to facilitate dynamic data verification, indirect extension. Integrating the renewable energy industry and developing a smart hybrid energy power control system device, FIG. 2 is a system block diagram of the power monitoring system 200 in the second embodiment of the present invention. The plurality of clean energy sources used by the power monitoring system 200 are solar photovoltaic power generation systems, wind power generation systems and fuel cell power generation systems, and the "smart control system" is configured to automatically adjust the home appliance usage settings according to consumer habits and to perform real-time dynamic data. Take the purpose. The circuit design of the hybrid energy central control panel is shown in Figure 3. In Figure 3, the hybrid power distribution panel, the various power input and output codes are as follows:

1. FC AC: AC side of fuel cell power generation system

2. TPC AC: Mains AC

3. WT AC: Wind power system output

4. PV AC: AC Photovoltaic Power System AC Terminal

5. WT IN: Wind power system input

6. FC DC: DC terminal of fuel cell power generation system

7. PV DC: DC end of solar photovoltaic system

When the applicant conducted the experiment, the electric power was used as the solar photovoltaic power generation system (device capacity of 5 kW), the wind power generation system (device capacity: 3 kW), the fuel cell power generation system (device capacity: 2 kW), and the commercial power system. The load matching is carried out using the planned controllable load (lamps, computers, electric heaters, window air conditioners, and split air conditioners) of the Yuanzhi University No. 3 Hall (Room 3525) for load testing. The invention adopts a user setting program for power monitoring and scheduling, uses a Mitsubishi Q series PLC module to execute a control program, and uses a PROFACE human-machine interface to input control parameters and monitor operation conditions, and the setting process description is as shown in FIG. 4A. 4B is a flow chart of the parameter and mode setting of FIG. 4A. Please refer to FIG. 4B. This setting includes the following steps:

Step S401: Start.

Step S402: setting the power usage mode. The power usage setting includes the following three modes: (1) Mode 1: Use mains power (TPC), solar power (PV) and wind power (WT) as power sources to regulate the regulated load; (2) Mode 2: Use TPC, PV and WT as the main source of electricity, fuel cell (FC) as the backup power source, and regulate the regulated load; and (3) Mode 3: Use TPC, PV and WT as the power source, not for the controllable load Regulation.

In the above mode 1 and mode 2, the power saving state setting can also be introduced at the same time, and the user is allowed to set the commercial power use restriction. The description of the mode interface setting is shown in Figure 5. When the applicant conducted the experiment, the adjustable load included: electric lamp (0.252 kW for one row of lamps), electric fan (0.08 kW for high and low speed conversion), electric heater (0.6 kW for one electric heating tube), and air conditioner for window (2 kW for compressor) ) and a separate air conditioner (compressor 2.6 kW).

Step S403: Load regulation setting. The load matching setting is mainly to set the order of the controllable home appliances, and the related sequence is shown in Figure 6.

Step S404: setting the actual operation time.

Considering that the user's time at home or out is not fixed, the user is allowed to set different modes at different time points to meet the user's needs and energy-saving efficiency. The setting screen is shown in Figure 7.

Step S405: program startup and parameter monitoring.

The timing of the use of fuel cells in Shaoguan is that when solar power generation and wind power generation are insufficient to meet the minimum demand or emergency conditions (such as power outages), users are allowed to set different start timings and detect and display the power generation status of each system at any time. The display screen can also be shown in the above human interface.

The operation of the components of the power monitoring system of Fig. 2 will be described in detail below. Referring to FIG. 2, the power monitoring system 200 includes a plurality of load controllers 210-1~210-6, and a plurality of loads (including an electric lamp 220-1, an electric fan 220-2, an electric heater 220-3, and a window type air conditioner). Compressor 220-4, separate air compressor compressor 220-5 and display 220-6), central control panel 230, programmable logic controller 240, computer 245, AC meter 250-1~250-4, solar energy Photoelectric power generation system 260, wind power generation system 270, utility power interface 280, fuel cell power generation system 290, and energy storage device 295. Coupling The relationship is shown in Figure 2.

Each power source in the system is coupled to the central control panel 230 via an alternating current meter 250-1~250-4. The central control panel 230 will receive the information of the alternating current meters 250-1 to 250-4 to know the power information of the solar photovoltaic power generation system 260, the wind power generation system 270 and the fuel cell power generation system 290, and the wattage of the commercial power supply. Moreover, the central control panel 230 receives the power provided by the solar photovoltaic power generation system 260, the wind power generation system 270, the mains interface 280, and the fuel cell power generation system 290, and then supplies the power to the loads through the load controllers 210-1 to 210-6. 220-1~220-6, at the same time, the central control panel 230 counts the amount of power supplied to the load 220-1~220-6.

The programmable logic controller 240 will receive the meter information provided by the central control panel 230 and the power consumption information of each load 220-1~220-6, and determine whether the power generated by the renewable energy source is sufficient for each load 220-1~ 220-6. The renewable energy of the present embodiment is exemplified by the solar photovoltaic power generation system 260 and the wind power generation system 270. When the programmable logic controller 240 determines that the power generated by the regenerative energy is insufficient to be supplied to each of the loads 220-1 to 220-6, the programmable logic controller 240 will set the above mode one to three according to the user. Decide on the power to join the mains and whether to turn off some of the load controllers 210-1~210-6.

Among them, the mode in the user setting is added to the mains power, and the user can set the limit value for using the mains. When the programmable logic controller 240 uses the information of the alternating current meter 250-1 to know that the power usage of the commercial power exceeds the limit value set by the user, the partial load controllers 210-1 to 210-6 will be closed. The order of closing is in accordance with the priority order set by the user, as shown in FIG. 6 above.

Mode 2 in the user setting is the same as mode 1. The difference is that mode 2 is added to the fuel cell power generation system 290, and the power generated by the fuel cell power generation system 290 is used as a backup power source. Mode 3 uses utility power, but does not limit the mains and does not regulate the load.

In addition, in the first mode and the second mode, the partial load may be turned off first, and then, if the renewable energy is still insufficient to supply power to the remaining load, the mains power is added.

In this embodiment, when the regenerative energy is sufficient to supply the load 220-1~220-6, the remaining power of the regenerative energy can be fed back to the manufacturer of the mains supply by the mains interface 280. In addition, the power monitoring system 200 may further include an energy storage device 295 that stores the remaining power of the renewable energy or the nighttime peak-to-peak power to the energy storage device 295. Thereafter, the amount of electricity stored in the energy storage device 295 can be used as backup power. Alternatively, when the regenerative energy is insufficient to supply the loads 220-1 to 220-6, the amount of electricity in the energy storage device 295 will output power to the loads 220-1 to 220-6.

The power monitoring system 200 of FIG. 2 can also include a computer 245, a computer 245, and a programmable logic controller 240. The user can know the current power usage and the load deployment status through the computer 245. The user can also change the user settings through the computer 245, and the screen and steps of the setting are as shown in FIGS. 4 to 7. In addition, the power monitoring system 200 can also have a Human Machine Interface (HMI), which allows users to perform power planning and monitoring through the human-machine interface. The human interface can be coupled to the programmable logic controller 240 via the computer 245 or directly to receive the data of the programmable logic controller 240 and set the programmable logic controller 240.

This embodiment can also use a LabView planning program, which will After collecting the data of the programmable logic controller 240, the collected data is collated and used to create an instant image file and an Excel file.

[Third embodiment]

The home-based consumer energy management system proposed in the above embodiments enables consumers to regulate the load of the self-use house to achieve personal energy-saving goals, and to develop a good habit of saving energy and saving electricity. In turn, consumers can evolve from passive use of electricity to an active role that can achieve energy-saving and power-saving, and then develop into the power management of the group through the local. In this way, the power monitoring system of the present invention can join the power dispatching of the area or even the global micro grid. In the future, the competition between consumers will further enhance the Peak-to-Average Ratio.

FIG. 8 is a system block diagram of a power monitoring system 300 in the first embodiment of the present invention. Referring to FIG. 8, the power monitoring system 300 includes a total renewable energy generator 310, a total mains interface 320, a total central control unit 330, and a plurality of sub-power monitoring systems 340-1~340-2. The total renewable energy generator 310 utilizes a renewable energy source to generate a first clean energy source. The main mains interface 320 supplies or receives a first alternating current. The central control unit 330 is coupled to the regenerative energy generator 310 and the total mains interface 320.

The sub-power monitoring system 340-1 includes load controllers 341-1 to 341-2, loads 342-1 to 342-2, a sub-renewable energy generator 343, a sub-mains interface 344, and a sub-central control unit 345. The sub power monitoring system 340-2 includes load controllers 351-1 to 351-2, loads 352-1 to 352-2, a sub-renewable energy generator 353, a sub-mains interface 354, and a sub-central control unit 355. In addition, the child central control unit 345 in the sub-power monitoring systems 340-1~340-2, 355 is coupled to the central control unit 330. The sub-renewable energy generators 343, 353 generate a second clean energy power using the renewable energy. The sub-current electrical interfaces 344, 354 supply or receive a second alternating current. The sub-power monitoring systems 340-1 to 340-2 are, for example, the power monitoring systems 100 and 200 of the first embodiment and the second embodiment described above, and therefore will not be described in detail herein.

The central control unit 330 of the present embodiment is coupled to the sub-central control units 345, 355 of each of the sub-power monitoring systems 340-1~340-2, and draws power of each sub-power monitoring system 340-1~340-2. Using the information and load provisioning conditions, each sub-power monitoring system 340-1~340-2 is remotely controlled. In addition, the central control unit 330 can also know the status of the system operation and the operation status of each of the sub-power monitoring systems 340-1 to 340-2 through the screen. In addition, the total central control unit 330 can know whether the second clean energy power of each of the sub-power monitoring systems 340-1~340-2 is sufficient, and determine the mains in each of the sub-power monitoring systems 340-1~340-2. The amount of electricity used, and then the power is scheduled.

For example, if the second clean energy power generated in the sub power monitoring system 340-1 is insufficient to supply to the load, and the first clean energy power generated by the total regenerative energy generator 310 is sufficient, the total central control unit 330 may The first clean energy power is delivered to the sub-central control unit 345 in the sub-power monitoring system 340-1.

In this embodiment, the central control unit 330 can also be coupled to a load controller (not shown), connect a load (not shown) via the load controller, and decide whether to close the connected load controller. In addition, the central control unit 330 can also be coupled to a total energy storage device (not shown) for storing excess clean energy power. And, when the second clean energy power or the first clean energy power is insufficient, the electric energy stored by the total energy storage device is output. another In addition, the central control unit 330 includes, for example, a general central control panel (not shown) and a unified programmable logic controller (not shown). Since the overall central control panel is similar to the operation of the central control panel 230 in the second embodiment, and the integrated programmable logic controller is similar to the programmable logic controller 240, it will not be described again.

In addition, the central control unit 330 in this embodiment can also be connected to a computer (not shown) for letting the user know the current power usage, the load deployment status, and the sub-power monitoring systems 340-1 through the computer. The operating status of 340-2. The central control unit 330 can also be connected to a total fuel cell power generation system (not shown), and the central control unit 330 determines whether to turn on the fuel cell power generation system according to user settings.

In addition, the total central control unit 330 and the total regenerative energy generator 310, the total mains interface 320, and the fuel cell power generation system of the present embodiment respectively include an alternating current meter for statistically outputting power information, and is controlled by the central control unit 330. Receive statistics.

In summary, the present invention is able to integrate the sources of power and provide an interface that allows the user to regulate the source of power and regulate the load as desired. Therefore, the present invention can plan the most economical power usage plan according to the power of the renewable energy and the habits of the user, so as to achieve the purpose of power saving. Further enhance the user's participation in energy saving and carbon reduction.

100, 200, 300‧‧‧ power monitoring system

110-1, 110-2, 210-1~210-6, 341-1, 341-2, 351-1~351-2‧‧‧ load controller

120-1, 120-2, 342-1, 342-2, 352-1, 352-2‧‧‧ load

130‧‧‧Renewable energy generator

140, 280‧ ‧ mains interface

150‧‧‧Central Control Unit

160, 245‧‧‧ computer

220-1‧‧‧Lights

220-2‧‧‧Electric fan

220-3‧‧‧Electric heater

220-4‧‧‧Compressor for window type air conditioner

220-5‧‧‧Separate air conditioner compressor

220-6‧‧‧ display

230‧‧‧Central Control Panel

240‧‧‧Programmable Logic Controller

250-1~250-4‧‧‧AC meter

260‧‧‧Solar Photoelectric Power System

270‧‧‧Wind power system

290‧‧‧ fuel cell power generation system

170, 295‧‧‧ energy storage devices

310‧‧‧Total renewable energy generator

320‧‧‧Total power interface

330‧‧‧Central Central Control Unit

340-1, 340-2‧‧‧Sub-power monitoring system

343, 353‧ ‧ sub-renewable energy generator

344, 354‧ ‧ sub-city interface

345, 355‧ ‧ sub-central control unit

S401~S405‧‧‧ Parameters and mode setting steps

1 is a system block diagram of a power monitoring system 100 in a first embodiment of the present invention.

2 is a system block diagram of a power monitoring system 200 in a second embodiment of the present invention.

3 is a circuit diagram of a hybrid control central control panel in a second embodiment of the present invention.

4A to 7 are schematic diagrams showing the setting process in the second embodiment of the present invention.

FIG. 8 is a system block diagram of a power monitoring system 300 in a third embodiment of the present invention.

100‧‧‧Power Monitoring System

110-1~110-2‧‧‧ load controller

120-1~120-2‧‧‧load

130‧‧‧Renewable energy generator

140‧‧‧Mains interface

150‧‧‧Central Control Unit

160‧‧‧ computer

170‧‧‧ energy storage device

Claims (19)

A power monitoring system includes: a plurality of load controllers, wherein each load controller is coupled to a load respectively; a regenerative energy generator for generating a clean energy power by using a renewable energy source; For supplying or receiving an alternating current; a central control unit coupled to the load controller, the regenerative energy generator, and the mains interface for preferentially using the clean energy power generated by the regenerative energy generator to supply the a load coupled to the load controller; wherein, when the clean energy source generated by the regenerative energy generator is insufficient, the central control unit causes the mains interface to supply the alternating current to the load control according to a user setting a load coupled to the device; wherein the user setting includes a limit value of the alternating current to define the alternating current supply of the mains interface to the low energy generated by the regenerative energy generator The upper limit of the load, when the alternating current supplied by the mains interface exceeds the limit value, the central control unit according to the The user setting determines that at least one specific load controller of the load controllers is turned off to stop supplying power to the load coupled to the specific load controller; wherein the clean energy power generated by the regenerative energy generator is sufficient to supply When the load coupled to the load controllers is coupled to the load coupled to the load controller, the remaining power of the clean energy source can also be fed back to the commercial power by the utility power interface. As stated in the power monitoring system described in item 1 of the patent scope, The method includes: an energy storage device coupled to the central control unit; wherein, when the clean energy power is sufficient to supply the load coupled by the load controllers, and there is additional power, or nighttime city ionization peak power, The central control unit supplies the additional power to the energy storage device to store energy for the energy storage device, wherein when the clean energy power is insufficient to supply power to the load coupled to the load controllers, The central control unit preferentially uses the power stored by the energy storage device to supply the load coupled to the load controllers. The power monitoring system as set forth in claim 1 further includes: a computer coupled to the central control unit; and a human interface coupled to the computer; wherein the user communicates with the computer through the human interface , change the user settings and get the current power configuration status. The power monitoring system of claim 1, wherein the renewable energy generator comprises a solar photovoltaic power generation system, a wind power generation system, or a combination of the two, wherein the user setting includes when the renewable energy source is generated. When the clean energy generated by the device is insufficient, the central control unit turns off the priority order of the load controllers. As stated in the power monitoring system described in item 1 of the patent scope, Including: an estimated power generation mechanism to predict the power generated by the renewable energy generator based on the current state of the generated energy generated by the renewable energy generator; when the power estimated by the power monitoring system is insufficient to supply the current load The amount will turn off part of the load controller to pre-stop power supply to part of the load. The power monitoring system as recited in claim 1 further includes: a fuel cell power generation system coupled to the central control unit; wherein, when the clean energy power is insufficient to supply power to the load controllers During the load, the central control unit determines whether to activate the fuel cell power generation system according to the user setting, so that the fuel cell power generation system generates power to supply the load coupled to the load controllers. The power monitoring system of claim 1, wherein the central control unit comprises: a central control panel coupled to the load controller, the regenerative energy generator, and the utility interface for preferentially adopting the The clean energy power generated by the regenerative energy generator supplies a load coupled to the load controllers, a programmable logic controller coupled to the central control panel and the load controllers, when the renewable energy is generated When the clean energy generated by the device is insufficient, according to the user setting, it is determined whether to close the specific load controller, so that the central control panel stops supplying power to the load coupled to the specific load controller. The central control panel provides the power information of the clean energy power and the power information of the alternating current supplied by the utility interface to the programmable logic controller. A power monitoring system includes: a total renewable energy generator for generating a first clean energy power by using a renewable energy source; a total mains interface for supplying or receiving a first alternating current; and a total central control unit, Coupling the regenerative energy generator and the total mains interface, a plurality of sub-central control units coupled to the central control unit, and each of the sub-central control units is coupled to: a plurality of load controllers, wherein each load The controller is coupled to a load respectively; a sub-renewable energy generator for generating a second clean energy source by using the regenerative energy; and a sub-city interface for supplying or receiving a second alternating current; wherein each The sub-central control unit is configured to preferentially use the second clean energy power generated by the sub-renewable energy generator to which the sub-regenerative energy generator is coupled, and supply the load coupled to the load controllers to which the load is coupled, wherein The second clean energy generator generated by the sub-renewable energy generator coupled to one of the sub-central control units is not sufficient Determining, according to a user setting inside the specific sub-central control unit, that at least one specific load controller of the load controllers of the specific sub-central control unit is turned off to stop supplying power to the load coupled to the specific load controller ; Wherein, when the second clean energy generated by the sub-renewable energy generator coupled by the specific sub-central control unit is insufficient, the total central control unit generates the first cleansing generated by the total regenerative energy generator Energy power is transferred to the specific sub-central control unit; wherein the second clean energy generator generated by the sub-renewable energy generator coupled to one of the sub-central control units is sufficient to supply When the load coupled to the load controllers is coupled, the remaining power of the second clean energy source can also be fed back to the mains by the sub-city interface. The power monitoring system of claim 8, wherein the specific sub-central control is insufficient when the second clean energy generated by the sub-renewable energy generator coupled to the specific sub-central control unit is insufficient The unit selectively causes the sub-current electrical interface to supply the second alternating current to the load coupled to the load controllers, wherein the user setting includes a second alternating current limit value for defining the second clean When the energy of the power is insufficient, the second alternating current of the electrical interface of the sub-city is supplied to the upper limit of the load, and when the second alternating current supplied by the sub-city electrical interface coupled to the specific sub-central control unit exceeds the limit, the specific The sub-central control unit turns off the specific load controller according to the user setting to stop the supply of power to the load coupled to the particular load controller. For example, in the power monitoring system described in claim 8, each of the sub-central control units is further coupled to: an energy storage device; Wherein the second clean energy power of the sub-renewable energy generator corresponding to the specific sub-central control unit is sufficient to supply the load coupled to the load controllers, and there is additional power, or a nighttime ionization peak In the case of electricity, the specific sub-central control unit supplies the additional power to the energy storage device to store energy for the energy storage device; wherein the sub-renewable energy generator coupled to the specific sub-central control unit When the second clean energy power is insufficient, the specific sub-central control unit preferentially uses the power stored by the energy storage device to which it is coupled to be supplied to the load controllers to which the specific sub-central control unit is coupled. The coupled load. Each of the sub-central control units is further coupled to: a sub-computer; and a sub-human machine interface coupled to the sub-computer of the specific sub-central control unit, as described in claim 8 The user changes the user setting and obtains the current power configuration status through the child machine interface and the child computer. The power monitoring system of claim 8, wherein the total regenerative energy generator and the sub-renewable energy generator comprise a solar photovoltaic power generation system, a wind power generation system, or a combination thereof, wherein The user setting includes a priority order in which the central control unit turns off the load controllers when the second clean energy source generated by the child regenerative energy generator is insufficient. The power monitoring system as recited in claim 8 of the patent application further includes: an estimated power generation mechanism for predicting the power generated by the renewable energy generator based on the current state of the generated energy generated by the renewable energy generator; The power estimated by the monitoring system is insufficient to supply the current load, and part of the load controller will be turned off to stop the power supply to the part of the load in advance. For example, in the power monitoring system described in claim 8, each of the sub-central control units is further coupled to: a sub-fuel cell power generation system; wherein, when the sub-regeneration is coupled to the specific sub-central control unit When the second clean energy of the energy generator is insufficient, the specific sub-central control unit determines whether to activate the sub-fuel cell power generation system according to the user setting, so that the sub-fuel cell power generation system generates electric power to supply to the specific sub-sub The load coupled to the load controllers to which the central control unit is coupled. The power monitoring system of claim 8, wherein each of the sub-central control units comprises: a sub-central control panel, wherein the sub-central control panel of the specific sub-central control unit is coupled to the specific sub-controller The load controller corresponding to the central control unit, the sub-renewable energy generator corresponding to the specific sub-central control unit, and the sub-city electrical interface corresponding to the specific sub-central control unit for preferentially adopting the specific sub-central control unit Corresponding to the sub-renewable energy production The second clean energy power generated by the generator supplies the load coupled to the load controllers corresponding to the specific sub-central control unit, and a programmable logic controller, wherein the specific sub-central control unit The programmable logic controller is coupled to the specific sub-central control panel of the specific sub-central control unit and the load controllers to which the specific sub-central control unit is coupled, when the specific sub-central control unit is coupled to the When the second clean energy generated by the sub-renewable energy generator is insufficient, determining, according to the user setting, whether to turn off at least one specific load controller of the load controllers, so that the specific sub-central control unit The sub-central control panel stops supplying power to the load to which the particular load controller is coupled. The power monitoring system as recited in claim 8 further includes: a total energy storage device coupled to the central control unit; wherein, when the first clean energy power is coupled to the specific sub-central control unit The second clean energy power generated by the sub-renewable energy generator is sufficient to supply the load power of the load controllers coupled to the specific sub-central control unit, and when there is additional power, or when the nighttime city is off-peak power The total central control unit supplies the additional power to the total energy storage device to store energy for the total energy storage device, wherein the sub-renewable energy generator coupled to the specific sub-central control unit generates When the second clean energy power is insufficient, the total central control unit preferentially uses the power stored by the total energy storage device to supply the load coupled to the load controllers coupled to the specific sub-central control unit. The power monitoring system as set forth in claim 8 further includes: a total computer coupled to the central control unit; and a total human interface coupled to the total computer; wherein the user transmits the total The human machine interface and the total computer change the user settings and obtain the current power configuration status of the central control unit and each of the sub-central control units. The power monitoring system as recited in claim 8 further includes: a total fuel cell power generation system coupled to the central control unit; wherein the first clean power generated by the total renewable energy generator is insufficient At this time, the total central control unit determines whether to activate the total fuel cell power generation system according to the user setting, so that the total fuel cell power generation system generates electric power. The power monitoring system of claim 8, wherein the total central control unit comprises: a total central control panel coupled to the sub-central control units, the total regenerative energy generator, and the total mains interface, And outputting the total renewable energy generator and the power of the total mains interface, and recording the power information of the total renewable energy generator and the power of the total mains interface; a unified programmable logic controller coupled to the total The central control panel and the sub-central control units are configured to receive the power information recorded by the central control panel and receive the power configuration status of each of the sub-central control units.