CN205692007U - Wisdom energy management system - Google Patents

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Please refer to fig. 1-2. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Fig. 1 shows a schematic diagram of the smart energy management system of the present invention, which includes a plurality of subsystems such as an information acquisition system, a control system, and a communication system.

The information acquisition system is based on a single chip microcomputer and/or a PLC, acquires relevant data of energy equipment through a sensor and/or a monitor, and converts the acquired data into analog quantity or digital quantity;

the control system comprises an upper computer extension and an upper computer main, wherein the upper computer main is communicated with the upper computer extensions, and the upper computer extensions are communicated with the single-chip microcomputers;

the communication system is used for realizing communication between the information acquisition system and the control system, and comprises one or more of industrial control communication, meter reading communication and network communication.

In yet another embodiment, the energy source comprises distributed energy and centralized energy. The distributed energy refers to an energy comprehensive utilization system distributed at a user end, renewable energy or natural gas is used as main driving energy, a cold, heat and electricity combined supply technology is used as a basis, energy gradient utilization which directly meets various requirements of users is realized, and the energy supply system is characterized by high efficiency, cleanness and flexibility. The driving energy supply equipment (energy equipment for short) comprises solar energy, a gas boiler, an electric boiler, a chemical raw material boiler, a biomass boiler, an energy storage device, air conditioning equipment such as an air source heat pump, a water (ground) source heat pump and carbon dioxide cooling and heating equipment and is used for supplying cold and heat energy and other energy. The energy equipment can adopt an external power supply mode, and can also be additionally provided with power generation equipment, such as biomass energy power generation equipment, wind energy power generation equipment, photovoltaic power generation equipment and geothermal power generation equipment. The distributed energy and the centralized energy can adopt the clean energy equipment, so that the environmental pollution can be effectively avoided.

Other facilities for distributed and centralized energy include heat pipe networks, and end systems that mate with energy devices, such as indoor fan coils, floor radiant heating systems, and the like. In actual use, the distributed energy can utilize the existing heating power pipe network or only build the heating power pipe network in a small area, thereby avoiding laying construction of large-scale pipelines, reducing damage to urban infrastructure and reducing heat loss in a heat supply pipe network.

By taking regional users (such as communities, hospitals, schools, hotels and the like) as units, a plurality of energy devices and other related facilities form a distributed energy station, and a plurality of distributed energy stations form an equipment system of intelligent energy.

In another embodiment, the information acquisition unit is based on the single chip microcomputer and acquires the data related to the energy equipment, including the data of the energy equipment and external data related to the energy equipment, such as environmental parameters, by combining various software and hardware. The single chip microcomputer is an integrated circuit chip, which comprises a microprocessor MPU, a random access memory RAM, a read only memory ROM, various I/O interfaces and an interrupt system, and can execute different functions by combining different software and hardware.

The single chip microcomputer comprises an acquisition module, a phase loss/phase error detection module, a system protection module, a mode conversion module, a communication module and an output module, and the following interfaces are arranged:

(1) switching value input interface: communication address acquisition, a pressure switch, a fan protection switch and the like.

(2) Switching value output interface: compressor ac contactor, fan ac contactor, water pump ac contactor, etc.

(3) Analog input interface: temperature collection points, wind speed collection, pressure collection, flow collection, current collection, voltage collection and the like.

(4) PID output interface: a stepping motor for controlling the electronic expansion valve, etc.

(5) Communication interface: 485 communication, m-bus communication, serial port communication, etc.

(6) A humidity acquisition interface: humidity collection, etc.

A temperature acquisition part: the system comprises exhaust temperature acquisition, equipment water outlet temperature acquisition, equipment backwater temperature acquisition, air temperature acquisition, economizer inlet temperature acquisition, economizer outlet temperature acquisition and defrosting temperature acquisition, and a plurality of standby temperature acquisition points.

Phase loss and phase error detection: the phase loss and the phase error of the three-phase power supply are detected, so that the steering of the fan and the water pump is effectively prevented, and the phase loss protection can prevent the motor from being burnt out due to the phase loss.

And (3) system protection: corresponding protection can be performed according to the collected signals of the high-voltage switch, the low-voltage switch, the water flow switch, the fan protection switch and the two-way valve interlocking signal, the exhaust temperature protection and the three-phase protection switch.

Mode conversion: the mode conversion part includes a heating mode, a cooling mode and a defrosting mode.

The single chip microcomputer also comprises a first fuzzy algorithm module which is used for calculating indoor real-time cold and heat loss according to the acquired related data of the energy equipment and feeding back a calculation result to the single chip microcomputer so as to control the operation of the energy equipment.

Indoor real-time cold and hot loss can be calculated through indoor and outdoor temperature and humidity difference, and the water outlet temperature, the return water temperature, the water flow and the water pressure of the energy equipment, and according to the indoor real-time cold and hot loss, the single chip microcomputer can control the operation of the energy equipment, including parameters such as water pump power, water outlet quantity and water pressure, so that system energy conservation and system energy efficiency optimization are realized.

Taking real-time acquisition of the indoor temperature as an example, a plurality of temperature values are continuously acquired, and in order to reduce errors, the first fuzzy algorithm module calculates an average value by removing the maximum value and the minimum value, so that an accurate indoor temperature value is obtained. Other data including the water outlet temperature, the backwater temperature, the current and the voltage of the energy equipment, the indoor and outdoor humidity, the wind speed, the air pressure and the like are also calculated through the mode.

The single chip microcomputer can be combined with energy equipment in an embedded mode, and can be embedded into an air source heat pump to control the starting and the operation of the air source heat pump by taking the air source heat pump as an example. When the air source heat pump is used as energy equipment for heating, refrigerating or heating water, the air source heat pump needs to be matched with other facilities, and the other facilities comprise a heating pipe network and a terminal system matched with the energy equipment, such as an indoor fan coil and a floor radiation heating system.

The single chip microcomputer comprises an energy equipment protection unit and is used for avoiding energy equipment damage caused by voltage, current, water flow, temperature or hardware faults before equipment is started and in equipment operation. The method comprises the following specific steps:

(1) and detecting the two-way valve: when the water pump is ready to be started, the system firstly judges whether the two-way valve has a fault or not, and alarms if the two-way valve has the fault.

(2) And water flow detection: when the circulating pump is started for a plurality of seconds, water flow detection is started, if the water flow switch is continuously disconnected for 5 seconds, the circulating pump is stopped, the circulating pump stops stopping other machines, and when the water flow switch is continuously disconnected for 2 times per hour, the main machine stops detecting for 1 hour.

(3) And high-voltage detection: when the high voltage detection fault occurs and the high voltage switch is continuously opened for 5-150 seconds or more than 2 times per hour, the operation of the corresponding compressor is immediately stopped. And when the fault is recovered, the fault alarm is relieved, and the system operation is recovered. The corresponding compressor is locked when the high-voltage switch is continuously opened for more than 150 seconds or opened for more than 2 times per hour. The power supply of the unit needs to be restarted to continue working.

(4) And low-voltage detection: when the low voltage detection fault occurs and the low voltage switch is continuously opened for 20-150 seconds or more than 2 times per hour, the operation of the corresponding compressor is immediately stopped. And when the fault is recovered, the fault alarm is relieved, and the system operation is recovered. The corresponding compressor is locked when the low-voltage switch is continuously opened for more than 150 seconds or opened for more than 2 times per hour. The power supply of the unit needs to be restarted to continue working.

(5) And a fan protection switch: when the fan protection fails in the running process of the fan and the failure time exceeds 30S, the fan, the compressor and the four-way valve are immediately stopped, and a failure alarm is displayed.

(6) Phase loss and phase error detection: when the dial switch is turned on, it indicates that the phase-lack and error detection is enabled. If the three-phase power of the unit is out of phase or in wrong sequence, the circuit can give an alarm.

(7) And protection of exhaust temperature: when the exhaust temperature is greater than or equal to the exhaust protection temperature (if 120 ℃), the machine is stopped and no alarm is given. When the action protection is carried out for more than two times every 30 minutes, the machine is stopped to display faults and give an alarm, when the exhaust temperature after the gas outlet protection is carried out is lower than or equal to the exhaust protection temperature (120 ℃) for reducing emission return difference within 3 minutes, otherwise, the exhaust protection is locked to display faults.

(8) And low-temperature protection of a water outlet: when refrigerating and the compressor starts 1 minute, the temperature of the water outlet is continuously less than or equal to 3 degrees and continues for 10S, equipment except the circulating pump stops running until the temperature of the water outlet is recovered to be more than 5 degrees, the unit can normally work, and when the temperature of the water outlet is more than 2 times per hour, the compressor is locked.

(9) And overtemperature protection of the water outlet: when the air conditioner is in a heating mode, the temperature of a water gap starts to be detected after the compressor runs for 1 minute, when the temperature of the water outlet is continuously greater than or equal to the heating set temperature for a plurality of seconds, equipment except the circulating pump stops running, when the temperature of the water outlet is recovered to be lower than the heating set temperature, the unit can normally work, and when the action is performed for more than 2 times per hour, the compressor is locked.

The air source heat pump is used as main energy equipment, the distributed energy station is built by taking a residential quarter or a community as a unit, and each equipment (the air source heat pump) in the distributed energy station is embedded into the single chip microcomputer. And an upper computer extension in the distributed energy station summarizes the air source heat pump operation data and the environment data acquired by each single chip microcomputer and forms a distributed database. The distributed database backs up and processes the data. The data of the distributed energy stations are transmitted to an upper computer main machine (main server) through corresponding upper computer extension machines, and the upper computer main machine summarizes the data uploaded by the upper computer extension machines to form a total database. And the host computer manages and controls the extension sets and the energy equipment of the host computer according to the relevant data and the processing result.

The distributed database data processing comprises data screening and selective uploading. Because the data volume such as equipment operation data and environmental data is huge, the data volume is totally uploaded to the host computer switchboard, and the requirements on software and hardware are higher. Therefore, a distributed database is required to screen data, and the data screening includes screening target device data or device operation key data. For example, after a new distributed energy source station is created, if the master server needs to monitor all data of the new distributed energy source station, all data of the new distributed energy source station is uploaded through the distributed database, and data of other distributed energy source stations which operate stably is not uploaded or is uploaded in a small amount. And for the air source heat pumps of all distributed energy stations, data such as alarm information and equipment outlet water temperature are key data, and after the data are screened by the distributed database, the data are selectively uploaded to the main server so as to facilitate remote centralized control.

Fig. 2 shows do the utility model discloses wisdom energy management system's control system schematic diagram adopts the form of host computer switchboard and host computer extension, multistage management and control energy equipment. The upper computer main machine is communicated with the upper computer extension sets, receives data transmitted by the upper computer extension sets, and sends out control instructions to the upper computer extension sets so as to control the energy equipment.

In another embodiment, the communication between the extension of the upper computer and the single chip microcomputer and/or the PLC adopts industrial control communication, Wifi communication and TCP or UDP protocol communication.

Wisdom energy management system uses with corresponding software cooperation, can realize wisdom energy management, include:

collecting relevant data of energy equipment, and processing, transmitting and summarizing the data;

further processing the data related to the energy equipment, and transmitting and summarizing the data;

and managing and controlling the energy equipment.

The energy equipment related data comprise energy equipment operation parameters and environment parameters, including the water outlet temperature, the return water temperature, the current and the voltage of the energy equipment, and indoor and outdoor temperature, pm2.5, wind speed, air pressure and noise.

In another embodiment, the intelligent energy management method further comprises configuring the priority of connection between the single chip microcomputer and/or the PLC and the upper computer extension; if the connection between the single chip microcomputer and/or the PLC and the upper computer extension with the first priority fails, the single chip microcomputer and/or the PLC is connected with the upper computer extension in the following order according to the priority, and the upper computer extension which is successfully connected sends alarm information to the upper computer switchboard.

In another embodiment, the processing of the energy equipment related data includes processing the energy equipment related data by using a cloud computing unit and sending a processing result to an upper computer switchboard, and the upper computer switchboard controls the energy equipment according to the processing result. The database system comprises a plurality of different feedback models, the feedback models are matched with the corresponding feedback models according to the cloud computing result, and the matched feedback models are sent to the energy equipment, so that the energy equipment is controlled.

In another embodiment, the processing of the relevant data of the energy equipment comprises adopting a fuzzy algorithm, calculating indoor real-time cold and heat loss according to the collected relevant data of the energy equipment, and feeding back a calculation result to a single chip microcomputer and/or a PLC (programmable logic controller), so as to control the operation of the energy equipment.

In another embodiment, the processing comprises calculating the energy efficiency ratio of the energy equipment and the indoor real-time cold and heat loss according to the acquired indoor and outdoor temperature difference and humidity, and the water outlet temperature and the water return temperature of the energy equipment by adopting a fuzzy algorithm, and feeding back the calculation result to a single chip microcomputer and/or a PLC (programmable logic controller), so as to perform frequency conversion control on the energy equipment.

The equipment refrigeration energy efficiency ratio EER is the refrigeration capacity/refrigeration consumption power;

and the equipment heating energy efficiency ratio COP is heating quantity/heating power consumption.

The energy efficiency ratio of the equipment reflects the energy saving conditions of different equipment. The larger the energy efficiency ratio value is, the smaller the electric power consumption required for using the product is, and the lower the power consumption of the equipment per unit time is. For energy equipment with lower energy efficiency, the singlechip and/or the PLC reports to the extension set of the upper computer and the switchboard step by step, and operation and maintenance personnel repair or replace the equipment according to the report.

The indoor real-time cold and heat loss is one of important energy-saving indexes of a building, and the indoor real-time cold and heat loss can be calculated according to parameters such as the indoor area of the building, the output energy of equipment, the indoor temperature and the like. Through the real-time cold and hot loss of building and equipment energy efficiency ratio, can predict the cold and hot demand in the building room and the cold and hot supply capacity of equipment to control energy equipment better, including carrying out frequency conversion control to energy equipment.

In another embodiment, managing the energy device further includes:

predicting the current outdoor temperature, humidity and wind speed according to historical weather;

predicting the indoor cold and heat demand;

and controlling the cold and heat output of the energy equipment.

Firstly, according to historical weather data including historical temperature, wind speed, humidity and the like, a weather prediction model is constructed, and the current weather including temperature, wind speed, humidity and the like is predicted.

And secondly, predicting indoor cold and heat demands according to outdoor temperature and humidity, wind speed and indoor real-time cold and heat losses by combining human body comfortable temperature and humidity empirical values.

And thirdly, controlling the cold and heat output of the energy equipment according to the weather prediction result and the indoor cold and heat demand prediction result.

Under the condition, the user can also set the indoor temperature and the air speed by himself, the single chip microcomputer feeds the set value of the user back to the extension set and the switchboard of the upper computer step by step, and the control system collects the data and corrects the indoor cold and heat demand according to the data. And similarly, the control system corrects the weather prediction model in real time according to the weather prediction model acquired by the single chip microcomputer, so that the weather prediction is more accurate.

In yet another embodiment, managing the energy device includes: according to indoor and outdoor temperature, humidity and indoor real-time cold and hot loss, the opening of the electromagnetic valve is controlled, and therefore automatic adjustment of hydraulic balance of the system is achieved.

In heating and refrigeration, system hydraulic balance is a key technology, hydraulic imbalance is one of main reasons for energy waste, and meanwhile, hydraulic balance is a premise for ensuring that other energy-saving measures can be reliably implemented. Currently, mechanical control is mostly performed by means of a balancing valve. And the utility model discloses in, according to indoor outer temperature, humidity and indoor real-time cold and hot loss and equipment output energy, perhaps indoor cold and hot volume demand predicted value, can real-time adjustment solenoid valve aperture to realize the balanced automatically regulated of system water conservancy.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.