WO2019085391A1 - Method and system for separate metering during heating operation of multi-split air conditioner - Google Patents

Method and system for separate metering during heating operation of multi-split air conditioner Download PDF

Info

Publication number
WO2019085391A1
WO2019085391A1 PCT/CN2018/082113 CN2018082113W WO2019085391A1 WO 2019085391 A1 WO2019085391 A1 WO 2019085391A1 CN 2018082113 W CN2018082113 W CN 2018082113W WO 2019085391 A1 WO2019085391 A1 WO 2019085391A1
Authority
WO
WIPO (PCT)
Prior art keywords
time period
indoor unit
heating operation
set time
power
Prior art date
Application number
PCT/CN2018/082113
Other languages
French (fr)
Chinese (zh)
Inventor
刘志胜
毛守博
何建奇
隋志蔚
Original Assignee
青岛海尔空调电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔空调电子有限公司 filed Critical 青岛海尔空调电子有限公司
Publication of WO2019085391A1 publication Critical patent/WO2019085391A1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing

Definitions

  • the invention belongs to the technical field of air conditioners, and in particular relates to a multi-system hot-flow household metering method and system.
  • Multi-connection refers to a heating (heat pump) system consisting of one or more outdoor units and multiple indoor unit systems installed in different application spaces. More online, with its advantages of saving installation space, energy saving and environmental protection, easy control and management, and obtaining a large number of applications in commercial and office places.
  • the multi-connected household billing system has certain requirements in some large and medium-sized business sites. It can not only realize the different compartments according to the energy consumption, but also encourage users to develop energy-saving habits and achieve energy saving for the overall operation.
  • the existing multi-line system household charging method is relatively complicated. Not only each multi-line system needs to be configured with one intelligent digital electric meter, and each internal machine must be configured with a corresponding electric meter. This results in a relatively expensive price for the household billing system, which limits the general application of household billing.
  • the invention provides a multi-connection mechanism thermal operation household measurement method, which improves the fairness of the household measurement, and does not need a electricity meter, and the cost is relatively low.
  • a multi-connection mechanism hot running household metering method the multi-connection includes an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit, the method comprising:
  • PF n is the power of the fan of the nth heating operation indoor unit during the set time period T
  • WE n is the no-load power of the electronic control board of the nth heating operation indoor unit in the set time period T,
  • Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit during the set time period T,
  • H n 1.01 ⁇ G n ⁇ (Tout n -Tai n );
  • H n is the heat exchange amount of the nth heating operation indoor unit in the set time period T;
  • G n is the air supply mass flow rate of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T;
  • Tout n is the outlet air temperature of the nth heating operation indoor unit at the air outlet in the set time period T;
  • Tai n is the inlet air temperature at the air inlet of the nth heating operation indoor unit during the set time period T;
  • P w 1 is the power of the compressor in the set time period T
  • P w 2 is the power of the outdoor fan in the set time period T
  • L is 1, 2, 3, ..., M
  • M is the number of outdoor electromechanical control valves
  • Pz n is the total power of the nth heating operation indoor unit in the set time period T;
  • N2 is the number of indoor units in standby state
  • W w 0 is the no-load power of the outdoor electromechanical control board in the set time period T;
  • a n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T;
  • a z is the total heat exchange area of the heat exchanger of all the heating operation indoor units in the set time period T;
  • H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
  • Tout n is obtained by a temperature sensor disposed at an air inlet of the nth heating operation indoor unit
  • the Tai n is obtained by a temperature sensor disposed at an air inlet of the nth heating operation indoor unit.
  • K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit
  • a n is the nth heating operation indoor unit
  • Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
  • A, B, and C are fitting constants, fmax and fmin are the maximum frequency and minimum frequency at which the compressor can operate, f is the frequency at which the compressor actually operates, and I0 is the rated current of the compressor at the current frequency.
  • the system further includes: an air outlet temperature acquiring module, configured to pass the formula Obtaining Tout n ; wherein, K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit; A n is the nth heating operation indoor unit The heat exchange area of the heat exchanger in the fixed time period T; Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
  • the advantages and positive effects of the present invention are: the multi-system hot-run household measurement method and system of the present invention, obtaining the power and the change of each heating operation indoor unit in the set time period T Heat, obtain the power of the outdoor unit in the set time period T, distribute the no-load power consumption of the outdoor electromechanical control board evenly to all indoor units, and heat exchange according to the heating time of each indoor unit in the set time period Area ratio (when cold-proof state) or heat exchange ratio (when normal heating state) distributes outdoor unit compressor power consumption, outdoor fan power consumption, and outdoor electromechanical control valve power consumption to each heating operation room Calculating the total power consumption of each heating operation indoor unit during the set time period T; improving the fairness and accuracy of the household measurement; and, the measurement method of the embodiment does not increase the multi-connection hardware cost
  • the utility model does not use the electricity meter, realizes the multi-line energy consumption household distribution, reduces the household metering cost, and facilitates the promotion and application of the household metering; moreover, the method of the embodiment is simple and
  • FIG. 1 is a flow chart of an embodiment of a multi-system hot-run household measurement method according to the present invention
  • FIG. 2 is a structural block diagram of an embodiment of a multi-function hot-run household metering system proposed by the present invention.
  • the multi-connection mechanism hot running household metering method of the invention does not increase the cost of multi-connection hardware, does not use the digital electricity meter, realizes the heating operation household metering on the basis of the existing multi-line hardware, and reduces the household metering cost. Improve the fairness and accuracy of household measurement.
  • the multi-connection includes an outdoor unit, a plurality of indoor units, and a centralized controller (or a monitoring server); the outdoor unit is respectively connected to each indoor unit through a refrigerant pipeline, and is disposed on each of the refrigerant tubes connected to the outdoor unit and the outdoor unit.
  • An electronic expansion valve for controlling the flow rate of the heat medium the outdoor unit communicates with each indoor unit through a communication line, the outdoor unit can detect the running state of the indoor unit, the outdoor unit sends the operation data to the indoor unit, and can control the indoor unit Run and stop.
  • the centralized controller (or monitoring server) is connected to the centralized control port of the outdoor electromechanical control board (or the communication line with the internal and external machines is connected by hand-in-hand) to realize the information sent by the receiving outdoor unit and send control to the outdoor unit. signal.
  • the centralized controller (or monitoring server) has a large storage space, and can store the data sent by the outdoor unit in time.
  • the centralized controller (or monitoring server) can communicate with the outdoor unit in time when the fault occurs, and control the outdoor unit to stop and avoid There is a deviation in the recorded data.
  • the measurement method is described by taking the full DC frequency conversion multiple connection as an example.
  • Full DC frequency conversion multi-connection means that the motors used in compressors, outdoor fans and indoor fans are all DC variable frequency permanent magnet motors.
  • Multi-line power consumption includes outdoor unit power consumption and indoor unit power consumption.
  • Outdoor unit power consumption includes no-load power consumption of outdoor electromechanical control board, compressor power consumption, outdoor fan power consumption, outdoor electromechanical control valve power consumption, indoor unit Power consumption includes indoor fan power consumption, no-load power consumption of indoor electrical control panel, and power consumption of electronic expansion valve.
  • the multi-system hot-run household measurement method of the present embodiment mainly includes the following steps, as shown in FIG. 1 .
  • Step S1 Obtain the power of each heating operation indoor unit within the set time period T.
  • the power of the indoor unit mainly includes the power of the indoor fan, the no-load power of the indoor electromechanical control board, and the power of the electronic expansion valve.
  • P n is the power of the nth heating operation indoor unit in the set time period T, which is calculated by the indoor electrical control board.
  • PF n is the power of the fan of the nth heating operation indoor unit during the set time period T, which can be calculated by the control circuit of the fan and then sent to the indoor electrical control board.
  • T the set time period
  • WE n is the no-load power of the electronic control board of the nth heating operation indoor unit in the set time period T.
  • Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit for a set period of time T.
  • Step S2 obtaining the heat exchange amount of each heating operation indoor unit in the set time period T.
  • H n is the amount of heat exchange (ie, heat generation) of the nth heating operation indoor unit during the set time period T.
  • G n is the blown mass flow rate of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T.
  • G n 0 when the fan is not running, and G n is a constant greater than 0 when the fan is running.
  • the value of G n is determined according to the fan speed, which corresponds to the fan speed. The larger the speed, the larger the G n value.
  • the preset fan speed-G n correspondence table is stored in the memory of the indoor electrical control board. When G n is needed, it can be obtained by looking up the table, which is simple and convenient.
  • Tout n is the outlet air temperature at the air outlet of the nth heating operation indoor unit during the set time period T.
  • Tai n is the inlet air temperature at the air inlet of the nth heating operation indoor unit during the set time period T.
  • Tout n there are two options for obtaining Tout n .
  • the formula is adopted. Obtain the outlet air temperature Tout n at the outlet.
  • the Tout n obtained by the formula can better characterize the wind temperature and avoid measurement errors.
  • K n is the heat transfer coefficient of the heat exchanger under the heating condition of the fan of the nth heating operation indoor unit at the set rotation speed.
  • K n is related to the fan model, and under the same model, K n is related to the fan speed. The larger the fan speed, the larger the K n .
  • the preset fan speed-heat exchange coefficient K n correspondence table is stored in the memory of the indoor electrical control board. When K n is needed, it can be obtained by looking up the table, which is simple and convenient.
  • a n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T.
  • a n is related to the heat exchanger model and is constant and stored in the memory of the indoor electrical control board.
  • Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T; Tsat is calculated by first detecting the compressor discharge pressure by the pressure sensor and calculating the saturation temperature Tsat corresponding to the exhaust pressure.
  • Tai n is acquired by a temperature sensor disposed at the air inlet of the nth heating operation indoor unit.
  • Tout n is obtained by a temperature sensor disposed at the air inlet of the nth heating operation indoor unit, and the Tai n is disposed at the nth.
  • a temperature sensor at the air inlet of the indoor unit for heating operation is obtained.
  • the heat exchange amount is zero.
  • Step S3 Obtain the power P w of the outdoor unit in the set time period T.
  • the power of the outdoor unit mainly includes the power of the compressor, the power of the outdoor fan, the no-load power of the outdoor electromechanical control board, and the power of the outdoor electromechanical control valve.
  • the formula for calculating the power P w of the outdoor unit during the set time period T is:
  • P w 1 is the power of the compressor in the set time period T
  • P w 2 is the power of the outdoor fan in the set time period T, which can be calculated by the control circuit of the fan and then sent to the outdoor electrical control board
  • L is 1, 2, 3, ..., M
  • M is the number of outdoor electromechanical control valves.
  • the outdoor electromechanical control valve includes all the electromagnetic valves, expansion valves and other electronic control valves of the outdoor unit.
  • the Pw is not included in the outdoor electromechanical control board no-load power.
  • Vq and iq are the q-axis voltage and current of the compressor real-time vector transformation.
  • the three-phase input currents i A , i B , and i C of the compressor are obtained, and CLARK conversion and PARK conversion are performed, and converted into vector control components iq and id.
  • R is the compressor motor resistance
  • L q is the compressor motor q-axis inductance
  • L d is the compressor motor d-axis inductance
  • ⁇ r is the compressor motor speed
  • ⁇ f is the compressor motor no-load electromotive force
  • ⁇ is the efficiency of the compressor drive module, and the calculation formula is:
  • Fmax and fmin are the maximum and minimum frequencies at which the compressor can operate and are constant.
  • f is the frequency at which the compressor actually operates, and I0 is the rated current of the compressor at the current frequency.
  • This step realizes the self-calculated outdoor unit power, which provides conditions for the calculation of the subsequent indoor unit power consumption.
  • Step S4 Calculate the total power consumption of each heating operation indoor unit in the set time period T.
  • the heating operation indoor unit includes two states: an anti-cold state and a normal heating state.
  • the saturation temperature Tsat corresponding to the compressor discharge pressure ⁇ the set anti-cold air temperature value (for example, 28 ° C)
  • the heating operation indoor unit is in an unstable operation state, that is, an anti-cold air state.
  • the saturation temperature Tsat corresponding to the exhaust pressure is set to the set cold air temperature value (for example, 28 ° C)
  • the set cold air temperature value for example, 28 ° C
  • Pz n is the total power of the nth heating operation indoor unit in the set time period T.
  • Wz n is the total power consumption of the nth heating operation indoor unit during the set time period T.
  • W w 0 is the no-load power of the outdoor electromechanical control panel during the set time period T.
  • a n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T.
  • a n is related to the heat exchanger model and is constant and stored in the memory of the indoor electrical control board.
  • a z is the total heat exchange area of the heat exchanger for all heating operation indoor units during the set time period T.
  • a z A 1 + A 2 + A 3 + ... + A N1 .
  • the heat transfer area of all the heating operation indoor units is summed by the outdoor electromechanical control board, and A z is calculated.
  • H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
  • H z H 1 + H 2 + H 3 + ... + H N1 .
  • N2 is the number of indoor units in the standby state.
  • N1+N2 is the number of all indoor units.
  • the indoor electrical control board sends the calculated P n , H n , A n to the outdoor electromechanical control board, and the outdoor electromechanical control board calculates Wz n .
  • the no-load power W w 0 of the outdoor electromechanical control board in the set time period T is equally distributed by all indoor units. It is distributed proportionally by the heating operation indoor unit. When the heating operation indoor unit is in the cold-proof state, it is proportionally distributed according to the heat exchange area. When the heating operation indoor unit is in the normal heating state, it is proportionally distributed according to the heat exchange capacity (heating capacity). Improve the fairness and accuracy of household measurement.
  • the no-load power of the outdoor electrical control board is basically equivalent to the standby power of the outdoor unit. Therefore, all indoor units need to be equally divided to improve the accuracy and fairness of the household measurement.
  • the heating operation indoor unit is in a cold-proof state, the heating operation indoor unit is proportionally distributed according to the size of the heat exchange area.
  • the calculation of the heat exchange area is simple and easy to implement; when the indoor unit of the heating operation is in the normal heating state, the indoor unit of the heating operation is proportionally distributed according to the amount of heat exchange. The heat exchange amount is measured accurately, which makes the household distribution accurate.
  • the no-load power consumption (W w 0 ⁇ T) of the outdoor electromechanical control board is shared equally by all indoor units, the compressor power consumption of the outdoor unit, the power consumption of the outdoor fan, and the power consumption of the outdoor electromechanical control valve. , that is, P w ⁇ T, which is shared by the indoor unit of the heating operation, and is proportionally distributed according to the heat exchange area of the indoor unit (in the case of preventing cold air) or the amount of heat exchange (in the normal heating state); that is, according to each The ratio of the heat exchange area or the heat exchange amount of the indoor heating operation indoor unit during the set time period distributes the outdoor unit power consumption P w ⁇ T to each heating operation indoor unit.
  • the hot operation process of the multi-connection mechanism after calculating the total power consumption of the indoor unit for each set time period T, it is saved in the memory of the outdoor electromechanical control board and uploaded to the centralized controller (or service monitor) for storage. .
  • the total power consumption of the indoor unit in each set time period is calculated, and the cumulative power consumption of each indoor unit is calculated.
  • the set time period T is 1 second to facilitate power consumption calculation.
  • the household energy metering method is used to obtain the power and heat exchange amount of each heating operation indoor unit in the set time period T, and obtain the power of the outdoor unit in the set time period T,
  • the no-load power consumption of the outdoor electrical control panel is evenly distributed to all indoor units, and the proportion of heat exchange area (in the case of anti-cold wind state) or the amount of heat exchange in the set time period is calculated according to each heating operation indoor unit (normal In the heating state, the power consumption of the outdoor unit compressor, the power consumption of the outdoor fan, and the power consumption of the outdoor electromechanical control valve are distributed to each heating operation indoor unit, and each heating operation indoor unit is calculated for a set time period T.
  • the metering method of the embodiment does not increase the cost of multiple online hardware, does not use the electricity meter, realizes the multi-line energy consumption household distribution, and reduces
  • the household metering cost is convenient for the promotion and application of the household metering; moreover, the method of the embodiment is simple and easy to implement.
  • the outdoor electrical control board After the power-on, the outdoor electrical control board starts the clock signal, communicates with the centralized controller (or service monitor), the indoor electrical control board, and corrects the outdoor unit clock, the indoor unit clock, and the centralized controller (or service monitoring). Consistent.
  • the outdoor electrical control board reads the accumulated value of the power consumption of each indoor unit in the previous period from its storage and sends it to the centralized controller (or service monitor).
  • the centralized controller (or service monitor) will receive the accumulated value.
  • the centralized controller (or service monitor) to facilitate subsequent search for the cause of the difference. Then, the centralized controller (or service monitor) sends a signal (or the indoor unit start signal) that allows the indoor unit to be turned on to the outdoor electromechanical control board, and the outdoor electromechanical control board controls the indoor unit after standby for 3 minutes according to the received start signal. Run, and then perform steps S1 to S4 to perform household metering.
  • the present embodiment also proposes a multi-connection mechanism hot-run household metering system, and the multiple connections include an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit.
  • the metering system mainly includes: an indoor unit power obtaining module, an indoor unit heat exchange quantity obtaining module, an outdoor unit power obtaining module, and a heating power running indoor unit total power consumption obtaining module, as shown in FIG. 2 .
  • the outdoor unit power obtaining module is configured to obtain the power P w of the outdoor unit during the set time period T: Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T, For the power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3, ..., M, M is the number of outdoor electromechanical control valves.
  • the outdoor unit power obtaining module includes a compressor power calculating unit, an efficiency calculating unit, and the like.
  • the total power consumption obtaining module of the heating operation indoor unit is used for calculating the total power consumption of each heating operation indoor unit in the set time period T: when the nth heating operation indoor unit is in the cold prevention state: When the nth heating operation indoor unit is in normal heating state:
  • Pz n is the total power of the nth heating operation indoor unit in the set time period T
  • N2 is the number of indoor units in the standby state
  • W w 0 is the outdoor electric control board within the set time period T No-load power
  • a n is the heat exchange area of the heat exchanger in the nth heating operation indoor unit during the set time period T
  • a z is the heat exchange of all heating operation indoor units in the set time period T
  • H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
  • the system further includes an air outlet temperature acquisition module, and an air outlet temperature acquisition module is used to pass the formula Obtaining Tout n ;
  • K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit;
  • a n is the nth heating operation indoor unit
  • Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
  • the system further includes a standby indoor unit total power consumption obtaining module, and the standby indoor unit total power consumption obtaining module is configured to obtain the total power consumption of each standby state indoor unit in the set time period T when the multi-connection mechanism is hot running.
  • the multi-connection mechanism of the embodiment is operated by the household metering system to obtain the power and heat exchange amount of each heating operation indoor unit in the set time period T, and obtain the power of the outdoor unit in the set time period T,
  • the no-load power consumption of the outdoor electrical control panel is evenly distributed to all indoor units, and the proportion of heat exchange area (in the case of anti-cold wind state) or the amount of heat exchange in the set time period is calculated according to each heating operation indoor unit (normal In the heating state, the power consumption of the outdoor unit compressor, the power consumption of the outdoor fan, and the power consumption of the outdoor electromechanical control valve are distributed to each heating operation indoor unit, and each heating operation indoor unit is calculated for a set time period T.
  • the metering method of the embodiment does not increase the cost of multiple online hardware, does not use the electricity meter, realizes the multi-line energy consumption household distribution, and reduces
  • the household metering cost is convenient for the promotion and application of the household metering; moreover, the method of the embodiment is simple and easy to implement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

A method for separate metering during heating operation of a multi-split air conditioner. The method comprises: obtaining the power and the heat exchange amount of each heating indoor unit within a set period of time T (S1, S2), obtaining the power of an outdoor unit within the set period of time T (S3), averagely allocating no-load power consumption of an electric control board of the outdoor unit to all the indoor units, according to the proportion of the heat exchange area or the proportion of the heat exchange amount of each heating indoor unit within the set period of time, allocating the power consumption of the compressor of the outdoor unit, the power consumption of an outdoor fan, and the power consumption of an electric control valve of the outdoor unit to all the heating indoor units, and calculating the total power consumption of each heating indoor unit within the set period of time T (S4). Fairness and accuracy of separate metering are improved. Moreover, according to the metering method, separate allocation of energy consumption of a multi-split air conditioner can be implemented without increasing the hardware costs of the multi-split air conditioner or using an electric meter so that the costs of separate metering can be reduced, and popularization and application of separate metering can be facilitated. Also disclosed is a system for separate metering during heating operation of a multi-split air conditioner.

Description

一种多联机制热运行分户计量方法及系统Multi-connection mechanism thermal operation household measurement method and system 技术领域Technical field
本发明属于空调技术领域，具体地说，是涉及一种多联机制热运行分户计量方法及系统。The invention belongs to the technical field of air conditioners, and in particular relates to a multi-system hot-flow household metering method and system.
背景技术Background technique
多联机是指由一个或多个室外机，和多台安装在不同应用空间的室内机系统组成的制热(热泵)系统。多联机以其节省安装空间，节能环保，便于控制和管理等优势，在商业和办公场所获得大量应用。Multi-connection refers to a heating (heat pump) system consisting of one or more outdoor units and multiple indoor unit systems installed in different application spaces. More online, with its advantages of saving installation space, energy saving and environmental protection, easy control and management, and obtaining a large number of applications in commercial and office places.
多联机的分户计费系统在一些大中型的商业场所有一定需求，它不仅可以实现不同分隔空间按照用能付费，而且可以促使用户养成节能习惯，实现整体运行的节能。The multi-connected household billing system has certain requirements in some large and medium-sized business sites. It can not only realize the different compartments according to the energy consumption, but also encourage users to develop energy-saving habits and achieve energy saving for the overall operation.
现有的多联机系统分户计费方法比较复杂，不仅每个多联机系统需要配置一台智能数字电度表，而且每台内机都要配置相应的电表。这导致分户计费系统价格比较昂贵，限制了分户计费的普遍应用。The existing multi-line system household charging method is relatively complicated. Not only each multi-line system needs to be configured with one intelligent digital electric meter, and each internal machine must be configured with a corresponding electric meter. This results in a relatively expensive price for the household billing system, which limits the general application of household billing.
发明内容Summary of the invention
本发明提供了一种多联机制热运行分户计量方法，提高了分户计量的公平性，且无需电度表，成本比较低。The invention provides a multi-connection mechanism thermal operation household measurement method, which improves the fairness of the household measurement, and does not need a electricity meter, and the cost is relatively low.
为解决上述技术问题，本发明采用下述技术方案予以实现：In order to solve the above technical problems, the present invention is implemented by the following technical solutions:
一种多联机制热运行分户计量方法，所述多联机包括室外机以及与所述室外机分别连接的多个室内机，所述方法包括：A multi-connection mechanism hot running household metering method, the multi-connection includes an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit, the method comprising:
(1)获得每台制热运行室内机在设定时间段T内的功率：(1) Obtain the power of each heating operation indoor unit within the set time period T:
P n＝PF n+WE n+Wf n， P n =PF n +WE n +Wf n ,
其中，P n为第n台制热运行室内机在设定时间段T内的功率， Where P n is the power of the nth heating operation indoor unit within the set time period T,
PF n为第n台制热运行室内机的风机在设定时间段T内的功率， PF n is the power of the fan of the nth heating operation indoor unit during the set time period T,
WE n为第n台制热运行室内机的电控板在设定时间段T内的空载功率， WE n is the no-load power of the electronic control board of the nth heating operation indoor unit in the set time period T,
Wf n为第n台制热运行室内机的电子膨胀阀在设定时间段T内的功率， Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit during the set time period T,
n＝1,2,3,……,N1，N1为制热运行室内机的数量；n=1, 2, 3, ..., N1, N1 is the number of indoor units for heating operation;
(2)获得每台制热运行室内机在设定时间段T内的换热量：(2) Obtain the heat exchange amount of each heating operation indoor unit in the set time period T:
H n＝1.01·G n·(Tout n-Tai n)； H n =1.01·G n ·(Tout n -Tai n );
其中，H n为第n台制热运行室内机在设定时间段T内的换热量； Wherein, H n is the heat exchange amount of the nth heating operation indoor unit in the set time period T;
G n为第n台制热运行室内机的风机在设定时间段T内的设定转速下的送风质量流量； G n is the air supply mass flow rate of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T;
Tout n为第n台制热运行室内机在设定时间段T内的出风口处的出风温度； Tout n is the outlet air temperature of the nth heating operation indoor unit at the air outlet in the set time period T;
Tai n为第n台制热运行室内机在设定时间段T内的进风口处的进风温度； Tai n is the inlet air temperature at the air inlet of the nth heating operation indoor unit during the set time period T;
(3)获得室外机在设定时间段T内的功率P w： (3) Obtain the power P w of the outdoor unit during the set time period T:
Figure PCTCN2018082113-appb-000001
Figure PCTCN2018082113-appb-000001
其中，P w1为压缩机在设定时间段T内的功率，P w2为室外风机在设定时间段T内的功率，
Figure PCTCN2018082113-appb-000002
为室外机电控阀在设定时间段T内的功率，L为1,2,3……，M，M为室外机电控阀的数量； Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T,
Figure PCTCN2018082113-appb-000002
For the power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3, ..., M, M is the number of outdoor electromechanical control valves;
(4)计算每台制热运行室内机在设定时间段T内的总功耗：(4) Calculate the total power consumption of each heating operation indoor unit during the set time period T:
当制热运行室内机为防冷风状态时：
Figure PCTCN2018082113-appb-000003
When the heating operation indoor unit is in the cold-proof state:
Figure PCTCN2018082113-appb-000003
当制热运行室内机正常制热状态时：
Figure PCTCN2018082113-appb-000004
When the heating operation indoor unit is in normal heating state:
Figure PCTCN2018082113-appb-000004
其中，Pz n为第n台制热运行室内机在设定时间段T内的总功率； Wherein, Pz n is the total power of the nth heating operation indoor unit in the set time period T;
N2为待机状态的室内机的数量；N2 is the number of indoor units in standby state;
W w0为室外机电控板在设定时间段T内的空载功率； W w 0 is the no-load power of the outdoor electromechanical control board in the set time period T;
A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积； A n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T;
A z为所有制热运行室内机在设定时间段T内的换热器的总换热面积； A z is the total heat exchange area of the heat exchanger of all the heating operation indoor units in the set time period T;
H z为所有制热运行室内机在设定时间段T内的总换热量。 H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
进一步的，通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得Tout n，通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得Tai n。 Further, Tout n is obtained by a temperature sensor disposed at an air inlet of the nth heating operation indoor unit, and the Tai n is obtained by a temperature sensor disposed at an air inlet of the nth heating operation indoor unit.
又进一步的，通过公式
Figure PCTCN2018082113-appb-000005
获得Tout n；其中，K n为第n台制热运行室内机的风机在设定转速下的换热器制热工况下换热系数；A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积；Tsat为在设定时间段T内的压缩机排气压力对应的饱和温度，首先通过压力传感器检测出压缩机排气压力，再计算出排气压力对应的饱和温度Tsat；Tai n通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得。 Further, through the formula
Figure PCTCN2018082113-appb-000005
Obtaining Tout n ; wherein, K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit; A n is the nth heating operation indoor unit The heat exchange area of the heat exchanger in the fixed time period T; Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
更进一步的，所述方法还包括：在多联机制热运行时，获得每台待机状态室内机在设定时间段T内的总功耗；计算公式为：
Figure PCTCN2018082113-appb-000006
其中，WE1 j为第j台待机状态室内机的电控板在设定时间段T内的空载功率，Wf1 j为第j台待机状态室内机的电子膨胀阀在设定时间段T内的功率，j＝1,2,3,……,N2，N2为待机状态室内机的数量。 Further, the method further includes: obtaining, when the multi-link mechanism is hot running, obtaining total power consumption of each standby state indoor unit within a set time period T; the calculation formula is:
Figure PCTCN2018082113-appb-000006
Wherein, WE1 j for the j-th stage of the standby state of the indoor unit control board electrical load power for the set time period T, Wf1 j for the j-th stage standby indoor electronic expansion valve within a set time period T Power, j = 1, 2, 3, ..., N2, N2 are the number of indoor units in standby.
再进一步的，通过公式P w1＝Vq·iq/η，计算出P w1；其中，Vq、iq为压缩机的q轴电压和电流；η为压缩机驱动模块效率，计算公式为： Still further, by the equation P w 1 = Vq · iq / η, calculate P w 1; wherein, Vq, iq is the q-axis voltage and the compressor current; [eta] is the efficiency of the compressor drive module, is calculated as:
Figure PCTCN2018082113-appb-000007
其中，A、B、C为拟合常数，fmax、fmin为压缩机能够运行的最大频率和最小频率，f为压缩机实际运行的频率，I0为压缩机在当前频率下的额定电流。
Figure PCTCN2018082113-appb-000007
Among them, A, B, and C are fitting constants, fmax and fmin are the maximum frequency and minimum frequency at which the compressor can operate, f is the frequency at which the compressor actually operates, and I0 is the rated current of the compressor at the current frequency.
一种多联机制热运行分户计量系统，所述多联机包括室外机以及与所述室外机分别连接的多个室内机，所述系统包括：室内机功率获得模块，用于获得 每台制热运行室内机在设定时间段T内的功率：P n＝PF n+WE n+Wf n，其中，P n为第n台制热运行室内机在设定时间段T内的功率，PF n为第n台制热运行室内机的风机在设定时间段T内的功率，WE n为第n台制热运行室内机的电控板在设定时间段T内的空载功率，Wf n为第n台制热运行室内机的电子膨胀阀在设定时间段T内的功率，n＝1,2,3,……,N1，N1为制热运行室内机的数量；室内机换热量获得模块，用于获得每台制热运行室内机在设定时间段T内的换热量：H n＝1.01·G n·(Tout n-Tai n)；其中，H n为第n台制热运行室内机在设定时间段T内的换热量；G n为第n台制热运行室内机的风机在设定时间段T内的设定转速下的送风质量流量；Tout n为第n台制热运行室内机在设定时间段T内的出风口处的出风温度；Tai n为第n台制热运行室内机在设定时间段T内的进风口处的进风温度；室外机功率获得模块，用于获得室外机在设定时间段T内的功率P w：
Figure PCTCN2018082113-appb-000008
其中，P w1为压缩机在设定时间段T内的功率，P w2为室外风机在设定时间段T内的功率，
Figure PCTCN2018082113-appb-000009
为室外机电控阀在设定时间段T内的功率，L为1,2,3……，M，M为室外机电控阀的数量；制热运行室内机总功耗获得模块，用于计算每台制热运行室内机在设定时间段T内的总功耗：当制热运行室内机为防冷风状态时：
Figure PCTCN2018082113-appb-000010
当制热运行室内机正常制热状态时：
Figure PCTCN2018082113-appb-000011
其中，Pz n为第n台制热运行室内机在设定时间段T内的总功率；N2为待机状态的室内机的数量；W w0为室外机电控板在设定时间段T内的空载功率；A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积；A z为所有制热运行室内机在设定时间段T内的换热器的总换热面积；H z为所有制热运行室内机在设定时间段T内的总换热量。 A multi-connection mechanism hot-run household metering system, the multi-connection includes an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit, the system comprising: an indoor unit power obtaining module, configured to obtain each system The power of the hot running indoor unit during the set time period T: P n = PF n + WE n + Wf n , where P n is the power of the nth heating operation indoor unit in the set time period T, PF n is the power of the fan of the nth heating operation indoor unit in the set time period T, and WE n is the no-load power of the electric control board of the nth heating operation indoor unit in the set time period T, Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit in the set time period T, n=1, 2, 3, ..., N1, N1 is the number of indoor units for heating operation; a heat obtaining module for obtaining a heat exchange amount of each heating operation indoor unit in a set time period T: H n = 1.01 · G n · (Tout n - Tai n ); wherein H n is the nth The heat exchange amount of the indoor heating operation indoor unit during the set time period T; G n is the air supply quality of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T Flow rate; Tout n is the outlet air temperature of the nth heating operation indoor unit at the air outlet in the set time period T; Tai n is the air inlet of the nth heating operation indoor unit within the set time period T The inlet air temperature at the location; the outdoor unit power acquisition module for obtaining the power P w of the outdoor unit during the set time period T:
Figure PCTCN2018082113-appb-000008
Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T,
Figure PCTCN2018082113-appb-000009
The power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3..., M, M is the number of outdoor electromechanical control valves; the total power consumption of the indoor unit for heating operation is obtained by using Calculate the total power consumption of each heating operation indoor unit during the set time period T: when the heating operation indoor unit is in the cold-proof state:
Figure PCTCN2018082113-appb-000010
When the heating operation indoor unit is in normal heating state:
Figure PCTCN2018082113-appb-000011
Wherein, Pz n is the total power of the nth heating operation indoor unit in the set time period T; N2 is the number of indoor units in the standby state; W w 0 is the outdoor electric control board within the set time period T No-load power; A n is the heat exchange area of the heat exchanger in the nth heating operation indoor unit during the set time period T; A z is the heat exchange of all heating operation indoor units in the set time period T The total heat exchange area of the device; H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
进一步的，所述系统还包括：出风温度获取模块，用于通过公式
Figure PCTCN2018082113-appb-000012
获得Tout n；其中，K n为第n台制热运行室内机的风机在设定转速下的换热器制热工况下换热系数；A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积；Tsat为在设定时间段T内的压缩机排气压力对应的饱和温度，首先通过压力传感器检测出压缩机排气压力，再计算出排气压力对应的饱和温度Tsat；Tai n通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得。 Further, the system further includes: an air outlet temperature acquiring module, configured to pass the formula
Figure PCTCN2018082113-appb-000012
Obtaining Tout n ; wherein, K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit; A n is the nth heating operation indoor unit The heat exchange area of the heat exchanger in the fixed time period T; Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
又进一步的，所述系统还包括：待机室内机总功耗获得模块，用于在多联机制热运行时，获得每台待机状态室内机在设定时间段T内的总功耗；计算公式为：
Figure PCTCN2018082113-appb-000013
其中，WE1 j为第j台待机状态室内机的电控板在设定时间段T内的空载功率，Wf1 j为第j台待机状态室内机的电子膨胀阀在设定时间段T内的功率，j＝1,2,3,……,N2，N2为待机状态室内机的数量。 Further, the system further includes: a standby indoor unit total power consumption obtaining module, configured to obtain a total power consumption of each standby state indoor unit in a set time period T during a hot operation of the multi-connection mechanism; for:
Figure PCTCN2018082113-appb-000013
Wherein, WE1 j for the j-th stage of the standby state of the indoor unit control board electrical load power for the set time period T, Wf1 j for the j-th stage standby indoor electronic expansion valve within a set time period T Power, j = 1, 2, 3, ..., N2, N2 are the number of indoor units in standby.
更进一步的，所述室外机功率获得模块包括：压缩机功率计算单元，用于通过公式P w1＝Vq·iq/η，计算出P w1；其中，Vq、iq为压缩机的q轴电压和电流；效率计算单元，用于通过公式
Figure PCTCN2018082113-appb-000014
计算η，其中，A、B、C为拟合常数，fmax、fmin为压缩机能够运行的最大频率和最小频率，f为压缩机实际运行的频率，I0为压缩机在当前频率下的额定电流。 Still further, the power of the outdoor unit obtaining module comprises: a compressor power calculation unit configured by the equation P w 1 = Vq · iq / η, calculate P w 1; wherein, Vq, iq is the q-axis compressor Voltage and current; efficiency calculation unit for passing the formula
Figure PCTCN2018082113-appb-000014
Calculate η, where A, B, and C are fitting constants, fmax and fmin are the maximum and minimum frequencies at which the compressor can operate, f is the actual operating frequency of the compressor, and I0 is the rated current of the compressor at the current frequency. .
与现有技术相比，本发明的优点和积极效果是：本发明的多联机制热运行分户计量方法及系统，获得每台制热运行室内机在设定时间段T内的功率和换热量，获得室外机在设定时间段T内的功率，将室外机电控板空载功耗平均分配至所有室内机，根据每台制热运行室内机在设定时间段内的换热面积占比(防冷风状态时)或换热量占比(正常制热状态时)将室外机压缩机功耗、室外风机功耗、室外机电控阀功耗分配至每台制热运行室内机，计算出每台制热运行室内机在设定时间段T内的总功耗；提高了分户计量的公平性和准确性；而且， 本实施例的计量方法，不增加多联机硬件成本，不使用电度表，实现多联机能耗分户分配，降低了分户计量成本，便于分户计量的推广应用；而且，本实施例的方法，简单易行，便于实现。Compared with the prior art, the advantages and positive effects of the present invention are: the multi-system hot-run household measurement method and system of the present invention, obtaining the power and the change of each heating operation indoor unit in the set time period T Heat, obtain the power of the outdoor unit in the set time period T, distribute the no-load power consumption of the outdoor electromechanical control board evenly to all indoor units, and heat exchange according to the heating time of each indoor unit in the set time period Area ratio (when cold-proof state) or heat exchange ratio (when normal heating state) distributes outdoor unit compressor power consumption, outdoor fan power consumption, and outdoor electromechanical control valve power consumption to each heating operation room Calculating the total power consumption of each heating operation indoor unit during the set time period T; improving the fairness and accuracy of the household measurement; and, the measurement method of the embodiment does not increase the multi-connection hardware cost The utility model does not use the electricity meter, realizes the multi-line energy consumption household distribution, reduces the household metering cost, and facilitates the promotion and application of the household metering; moreover, the method of the embodiment is simple and easy to implement.
结合附图阅读本发明的具体实施方式后，本发明的其他特点和优点将变得更加清楚。Other features and advantages of the present invention will become apparent from the Detailed Description of the Drawing.
附图说明DRAWINGS
图1是本发明提出的多联机制热运行分户计量方法的一个实施例的流程图；1 is a flow chart of an embodiment of a multi-system hot-run household measurement method according to the present invention;
图2是本发明提出的多联机制热运行分户计量系统的一个实施例的结构框图。2 is a structural block diagram of an embodiment of a multi-function hot-run household metering system proposed by the present invention.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白，以下将结合附图和实施例，对本发明作进一步详细说明。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
本发明的多联机制热运行分户计量方法，不增加多联机硬件成本，不使用数字电度表，在现有多联机硬件的基础上实现制热运行分户计量，降低了分户计量成本，提高了分户计量的公平性和准确性。The multi-connection mechanism hot running household metering method of the invention does not increase the cost of multi-connection hardware, does not use the digital electricity meter, realizes the heating operation household metering on the basis of the existing multi-line hardware, and reduces the household metering cost. Improve the fairness and accuracy of household measurement.
多联机包括室外机、多个室内机、集中控制器(或监控服务器)；室外机通过冷媒管路分别与每个室内机连接，在每个室内机与室外机连接的冷媒管路上均布设有一个电子膨胀阀，用于控制热媒流量；室外机与每个室内机通过通讯线进行通信，室外机可以检测室内机的运行状态，室外机发送运行数据给室内机，并且可以控制室内机的运行和停止。集中控制器(或监控服务器)与室外机电控板的集控端口连接(或者和内外机的通讯线通过手拉手的方式接在一起)，实现接收室外机发送的信息以及向室外机发送控制信号。集中控制器(或监控服务器)具有较大的存储空间，可以将室外机发送的数据及时存储，集中控制器(或监控服务器)能够在出现故障时及时和室外机通讯，控制室外机停机，避免记录数据出现偏差。The multi-connection includes an outdoor unit, a plurality of indoor units, and a centralized controller (or a monitoring server); the outdoor unit is respectively connected to each indoor unit through a refrigerant pipeline, and is disposed on each of the refrigerant tubes connected to the outdoor unit and the outdoor unit. An electronic expansion valve for controlling the flow rate of the heat medium; the outdoor unit communicates with each indoor unit through a communication line, the outdoor unit can detect the running state of the indoor unit, the outdoor unit sends the operation data to the indoor unit, and can control the indoor unit Run and stop. The centralized controller (or monitoring server) is connected to the centralized control port of the outdoor electromechanical control board (or the communication line with the internal and external machines is connected by hand-in-hand) to realize the information sent by the receiving outdoor unit and send control to the outdoor unit. signal. The centralized controller (or monitoring server) has a large storage space, and can store the data sent by the outdoor unit in time. The centralized controller (or monitoring server) can communicate with the outdoor unit in time when the fault occurs, and control the outdoor unit to stop and avoid There is a deviation in the recorded data.
本实施例以全直流变频多联机为例对计量方法进行说明。全直流变频多联机是指压缩机、室外风机、室内风机使用的电机都是直流变频的永磁电机。In this embodiment, the measurement method is described by taking the full DC frequency conversion multiple connection as an example. Full DC frequency conversion multi-connection means that the motors used in compressors, outdoor fans and indoor fans are all DC variable frequency permanent magnet motors.
多联机功耗包括室外机功耗和室内机功耗，室外机功耗包括室外机电控板空载功耗、压缩机功耗、室外风机功耗、室外机电控阀功耗，室内机功耗包括室内风机功耗、室内机电控板空载功耗、电子膨胀阀功耗。多联机制热运行时，有的室内机制热运行，有的室内机处于待机状态。Multi-line power consumption includes outdoor unit power consumption and indoor unit power consumption. Outdoor unit power consumption includes no-load power consumption of outdoor electromechanical control board, compressor power consumption, outdoor fan power consumption, outdoor electromechanical control valve power consumption, indoor unit Power consumption includes indoor fan power consumption, no-load power consumption of indoor electrical control panel, and power consumption of electronic expansion valve. When the multi-link mechanism is hot running, some indoor mechanisms are hot, and some indoor units are in standby state.
本实施例的多联机制热运行分户计量方法主要包括下述步骤，参见图1所示。The multi-system hot-run household measurement method of the present embodiment mainly includes the following steps, as shown in FIG. 1 .
步骤S1：获得每台制热运行室内机在设定时间段T内的功率。Step S1: Obtain the power of each heating operation indoor unit within the set time period T.
室内机的功率主要包括室内风机的功率、室内机电控板的空载功率、电子膨胀阀的功率。The power of the indoor unit mainly includes the power of the indoor fan, the no-load power of the indoor electromechanical control board, and the power of the electronic expansion valve.
根据公式P n＝PF n+WE n+Wf n，计算出P n。 According to the formula P n = PF n + WE n + Wf n, calculate P n.
P n为第n台制热运行室内机在设定时间段T内的功率，由室内机电控板计算得出。 P n is the power of the nth heating operation indoor unit in the set time period T, which is calculated by the indoor electrical control board.
PF n为第n台制热运行室内机的风机在设定时间段T内的功率，可以由风机的控制电路计算获得，然后发送给室内机电控板。在室内机无制热需求或者未设定制热运行时，室内风机不运行，该风机的功率为0。 PF n is the power of the fan of the nth heating operation indoor unit during the set time period T, which can be calculated by the control circuit of the fan and then sent to the indoor electrical control board. When the indoor unit has no heating demand or the heating operation is not set, the indoor fan does not operate, and the power of the fan is zero.
WE n为第n台制热运行室内机的电控板在设定时间段T内的空载功率。 WE n is the no-load power of the electronic control board of the nth heating operation indoor unit in the set time period T.
Wf n为第n台制热运行室内机的电子膨胀阀在设定时间段T内的功率。 Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit for a set period of time T.
n＝1,2,3,……,N1，N1为在设定时间段T内制热运行室内机的数量。n = 1, 2, 3, ..., N1, N1 is the number of indoor units that operate during the set time period T.
步骤S2：获得每台制热运行室内机在设定时间段T内的换热量。Step S2: obtaining the heat exchange amount of each heating operation indoor unit in the set time period T.
室内机电控板根据公式H n＝1.01·G n·(Tout n-Tai n)，计算出H n。 The indoor electromechanical control panel calculates H n according to the formula H n =1.01·G n ·(Tout n -Tai n ).
其中，H n为第n台制热运行室内机在设定时间段T内的换热量(也即制热量)。 Wherein, H n is the amount of heat exchange (ie, heat generation) of the nth heating operation indoor unit during the set time period T.
G n为第n台制热运行室内机的风机在设定时间段T内的设定转速下的送风质量流量。风机不运转时G n＝0，风机运转时G n为大于0的常数。G n的值根据 风机转速确定，与风机转速对应，转速越大，G n值越大。预设风机转速-G n对应表，存储在室内机电控板的存储器内，在需要G n时，通过查表即可获得，简单方便。 G n is the blown mass flow rate of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T. G n =0 when the fan is not running, and G n is a constant greater than 0 when the fan is running. The value of G n is determined according to the fan speed, which corresponds to the fan speed. The larger the speed, the larger the G n value. The preset fan speed-G n correspondence table is stored in the memory of the indoor electrical control board. When G n is needed, it can be obtained by looking up the table, which is simple and convenient.
Tout n为第n台制热运行室内机在设定时间段T内的出风口处的出风温度。 Tout n is the outlet air temperature at the air outlet of the nth heating operation indoor unit during the set time period T.
Tai n为第n台制热运行室内机在设定时间段T内的进风口处的进风温度。 Tai n is the inlet air temperature at the air inlet of the nth heating operation indoor unit during the set time period T.
Tout n的获得有两种方案。作为本实施例的一种优选设计方案，在本实施例中，通过公式
Figure PCTCN2018082113-appb-000015
获得出风口处的出风温度Tout n。通过该公式获得的Tout n，能较好的表征出风温度，避免测量误差。 There are two options for obtaining Tout n . As a preferred design of the embodiment, in the embodiment, the formula is adopted.
Figure PCTCN2018082113-appb-000015
Obtain the outlet air temperature Tout n at the outlet. The Tout n obtained by the formula can better characterize the wind temperature and avoid measurement errors.
其中，K n为第n台制热运行室内机的风机在设定转速下的换热器制热工况下换热系数。K n与风机型号有关，而且在同一型号下，K n与风机转速有关，风机转速越大，K n越大。预设风机转速-换热系数K n对应表，存储在室内机电控板的存储器内，在需要K n时，通过查表即可获得，简单方便。 Wherein, K n is the heat transfer coefficient of the heat exchanger under the heating condition of the fan of the nth heating operation indoor unit at the set rotation speed. K n is related to the fan model, and under the same model, K n is related to the fan speed. The larger the fan speed, the larger the K n . The preset fan speed-heat exchange coefficient K n correspondence table is stored in the memory of the indoor electrical control board. When K n is needed, it can be obtained by looking up the table, which is simple and convenient.
A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积。A n与换热器型号有关，为常数，存储在室内机电控板的存储器内。 A n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T. A n is related to the heat exchanger model and is constant and stored in the memory of the indoor electrical control board.
Tsat为在设定时间段T内的压缩机排气压力对应的饱和温度；Tsat的计算方法为：首先通过压力传感器检测出压缩机排气压力，再计算出排气压力对应的饱和温度Tsat。Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T; Tsat is calculated by first detecting the compressor discharge pressure by the pressure sensor and calculating the saturation temperature Tsat corresponding to the exhaust pressure.
Tai n通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得。 Tai n is acquired by a temperature sensor disposed at the air inlet of the nth heating operation indoor unit.
作为本实施例的另一种优选设计方案，为了便于计算换热量H n，Tout n通过布设在第n台制热运行室内机的进风口处的温度传感器获得，Tai n通过布设在第n台制热运行室内机的进风口处的温度传感器获得。 As another preferred design of the embodiment, in order to facilitate calculation of the heat exchange amount H n , Tout n is obtained by a temperature sensor disposed at the air inlet of the nth heating operation indoor unit, and the Tai n is disposed at the nth. A temperature sensor at the air inlet of the indoor unit for heating operation is obtained.
在室内机无制热需求或者未设定制热运行时，换热量为0。When the indoor unit has no heating demand or no heating operation is set, the heat exchange amount is zero.
步骤S3：获得室外机在设定时间段T内的功率P w。 Step S3: Obtain the power P w of the outdoor unit in the set time period T.
室外机的功率主要包括压缩机的功率、室外风机的功率、室外机电控板的空载功率、室外机电控阀的功率。The power of the outdoor unit mainly includes the power of the compressor, the power of the outdoor fan, the no-load power of the outdoor electromechanical control board, and the power of the outdoor electromechanical control valve.
室外机在设定时间段T内的功率P w的计算公式为：
Figure PCTCN2018082113-appb-000016
The formula for calculating the power P w of the outdoor unit during the set time period T is:
Figure PCTCN2018082113-appb-000016
其中，P w1为压缩机在设定时间段T内的功率，P w2为室外风机在设定时间段T内的功率，可以由风机的控制电路计算获得，然后发送给室外机电控板；
Figure PCTCN2018082113-appb-000017
为室外机电控阀在设定时间段T内的功率，L为1,2,3……，M，M为室外机电控阀的数量。室外机电控阀包括室外机所有的电磁阀、膨胀阀等电控阀。 Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T, which can be calculated by the control circuit of the fan and then sent to the outdoor electrical control board;
Figure PCTCN2018082113-appb-000017
For the power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3, ..., M, M is the number of outdoor electromechanical control valves. The outdoor electromechanical control valve includes all the electromagnetic valves, expansion valves and other electronic control valves of the outdoor unit.
由于室外机电控板的空载功耗由全部室内机平均分担，为了后续计算方便，此处计算P w时不包括室外机电控板空载功率。 Since the no-load power consumption of the outdoor electromechanical control board is shared equally by all the indoor units, for the convenience of subsequent calculation, the Pw is not included in the outdoor electromechanical control board no-load power.
在本实施例中，压缩机功率P w1计算公式为：P w1＝Vq·iq/η。 In the present embodiment, the compressor power P w 1 is calculated as: P w 1 = Vq·iq / η.
其中，Vq、iq为压缩机实时矢量变换的q轴电压和电流。Among them, Vq and iq are the q-axis voltage and current of the compressor real-time vector transformation.
获取压缩机的三相输入电流i A、i B、i C，进行CLARK变换、PARK变换，转换为矢量控制分量iq、id。 The three-phase input currents i A , i B , and i C of the compressor are obtained, and CLARK conversion and PARK conversion are performed, and converted into vector control components iq and id.
Figure PCTCN2018082113-appb-000018
Figure PCTCN2018082113-appb-000018
然后通过上式计算计算出d轴电压V d和q轴电压V q。 Then, the d-axis voltage V d and the q-axis voltage V q are calculated by the above equation.
其中，R为压缩机电机电阻，L q为压缩机电机q轴电感，L d为压缩机电机d轴电感，ω r为压缩机电机转速；ψ f为压缩机电机空载电动势。 Where R is the compressor motor resistance, L q is the compressor motor q-axis inductance, L d is the compressor motor d-axis inductance, ω r is the compressor motor speed; ψ f is the compressor motor no-load electromotive force.
η为压缩机驱动模块效率，计算公式为：η is the efficiency of the compressor drive module, and the calculation formula is:
Figure PCTCN2018082113-appb-000019
Figure PCTCN2018082113-appb-000019
通过实验验证获得压缩机效率计算公式。其中，A、B、C为拟合常数，通过实验模拟获得。在本实施例中，A＝0.95，B＝0.03，C＝0.015。The compressor efficiency calculation formula was obtained through experimental verification. Among them, A, B, and C are fitting constants, which are obtained by experimental simulation. In the present embodiment, A = 0.95, B = 0.03, and C = 0.015.
fmax、fmin为压缩机能够运行的最大频率和最小频率，为常数。在本实施例中，fmax＝100HZ、fmin＝20HZ。f为压缩机实际运行的频率，I0为压缩机在当前频率下的额定电流。Fmax and fmin are the maximum and minimum frequencies at which the compressor can operate and are constant. In the present embodiment, fmax = 100HZ and fmin = 20HZ. f is the frequency at which the compressor actually operates, and I0 is the rated current of the compressor at the current frequency.
该步骤实现了自主核算室外机功率，为后续室内机功耗的计算提供了条件。This step realizes the self-calculated outdoor unit power, which provides conditions for the calculation of the subsequent indoor unit power consumption.
步骤S4：计算每台制热运行室内机在设定时间段T内的总功耗。Step S4: Calculate the total power consumption of each heating operation indoor unit in the set time period T.
制热运行室内机包括两种状态：防冷风状态和正常制热状态。The heating operation indoor unit includes two states: an anti-cold state and a normal heating state.
当压缩机排气压力对应的饱和温度Tsat≤设定的防冷风温度值(如28℃)时，判定制热运行室内机处于非稳定运行状态，即防冷风状态。When the saturation temperature Tsat corresponding to the compressor discharge pressure ≤ the set anti-cold air temperature value (for example, 28 ° C), it is determined that the heating operation indoor unit is in an unstable operation state, that is, an anti-cold air state.
当排气压力对应的饱和温度Tsat＞设定的防冷风温度值(如28℃)时，判定制热运行室内机处于稳定运行状态，即正常制热状态。When the saturation temperature Tsat corresponding to the exhaust pressure is set to the set cold air temperature value (for example, 28 ° C), it is determined that the heating operation indoor unit is in a stable operation state, that is, a normal heating state.
当制热运行室内机为防冷风状态时，室内风机不运行，室内换热器与其周围空气为自然对流和辐射换热，计算公式为：When the indoor unit of the heating operation is in the state of preventing cold air, the indoor fan does not operate, and the indoor heat exchanger and its surrounding air are natural convection and radiation heat exchange, and the calculation formula is:
Figure PCTCN2018082113-appb-000020
Figure PCTCN2018082113-appb-000020
当制热运行室内机为正常制热状态时，室内风机正常运行，室内换热器与其周围空气为强制对流换热，计算公式为：When the heating operation indoor unit is in the normal heating state, the indoor fan operates normally, and the indoor heat exchanger and its surrounding air are forced convection heat exchange. The calculation formula is:
Figure PCTCN2018082113-appb-000021
Figure PCTCN2018082113-appb-000021
其中，Pz n为第n台制热运行室内机在设定时间段T内的总功率。 Wherein, Pz n is the total power of the nth heating operation indoor unit in the set time period T.
Wz n为第n台制热运行室内机在设定时间段T内的总功耗。 Wz n is the total power consumption of the nth heating operation indoor unit during the set time period T.
W w0为室外机电控板在设定时间段T内的空载功率。 W w 0 is the no-load power of the outdoor electromechanical control panel during the set time period T.
A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积。A n与换热器型号有关，为常数，存储在室内机电控板的存储器内。 A n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T. A n is related to the heat exchanger model and is constant and stored in the memory of the indoor electrical control board.
A z为所有制热运行室内机在设定时间段T内的换热器的总换热面积。 A z is the total heat exchange area of the heat exchanger for all heating operation indoor units during the set time period T.
即，A z＝A 1+A 2+A 3+......+A N1。由室外机电控板对所有制热运行室内机的换热面积求和，计算出A z。 That is, A z = A 1 + A 2 + A 3 + ... + A N1 . The heat transfer area of all the heating operation indoor units is summed by the outdoor electromechanical control board, and A z is calculated.
H z为所有制热运行室内机在设定时间段T内的总换热量。 H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
即，H z＝H 1+H 2+H 3+......+H N1。 That is, H z = H 1 + H 2 + H 3 + ... + H N1 .
N2为待机状态的室内机的数量。N1+N2为所有室内机的数量。N2 is the number of indoor units in the standby state. N1+N2 is the number of all indoor units.
室内机电控板将计算出的P n、H n、A n发送给室外机电控板，室外机电控板计算出Wz n。 The indoor electrical control board sends the calculated P n , H n , A n to the outdoor electromechanical control board, and the outdoor electromechanical control board calculates Wz n .
可知，多联机制热运行时，室外机电控板在设定时间段T内的空载功率W w0由所有室内机平均分配，
Figure PCTCN2018082113-appb-000022
由制热运行室内机按比例分配。当制热运行室内机处于防冷风状态时，根据换热面积大小按比例分配
Figure PCTCN2018082113-appb-000023
当制热运行室内机处于正常制热状态时，根据换热量(制热能力)大小按比例分配
Figure PCTCN2018082113-appb-000024
提高了分户计量的公平性和准确性。 It can be seen that when the multi-link mechanism is hot running, the no-load power W w 0 of the outdoor electromechanical control board in the set time period T is equally distributed by all indoor units.
Figure PCTCN2018082113-appb-000022
It is distributed proportionally by the heating operation indoor unit. When the heating operation indoor unit is in the cold-proof state, it is proportionally distributed according to the heat exchange area.
Figure PCTCN2018082113-appb-000023
When the heating operation indoor unit is in the normal heating state, it is proportionally distributed according to the heat exchange capacity (heating capacity).
Figure PCTCN2018082113-appb-000024
Improve the fairness and accuracy of household measurement.
室外机电控板的空载功率基本上等同于室外机的待机功率，因此，需要所有室内机平分，以提高分户计量的准确性和公平性。当制热运行室内机为防冷风状态时，制热运行室内机根据换热面积大小按比例分配
Figure PCTCN2018082113-appb-000025
换热面积计算简单、容易实现；当制热运行室内机为正常制热状态时，制热运行室内机根据换热量大小按比例分配
Figure PCTCN2018082113-appb-000026
换热量测算准确，使得分户分配时准确性高。 The no-load power of the outdoor electrical control board is basically equivalent to the standby power of the outdoor unit. Therefore, all indoor units need to be equally divided to improve the accuracy and fairness of the household measurement. When the heating operation indoor unit is in a cold-proof state, the heating operation indoor unit is proportionally distributed according to the size of the heat exchange area.
Figure PCTCN2018082113-appb-000025
The calculation of the heat exchange area is simple and easy to implement; when the indoor unit of the heating operation is in the normal heating state, the indoor unit of the heating operation is proportionally distributed according to the amount of heat exchange.
Figure PCTCN2018082113-appb-000026
The heat exchange amount is measured accurately, which makes the household distribution accurate.
在多联机制热运行时，待机状态室内机在设定时间段T内的总功耗的计算公式为：
Figure PCTCN2018082113-appb-000027
其中，WE1 j为第j台待机状态室内机的电控板在设定时间段T内的空载功率，Wf1 j为第j台待机状态室内机的电子膨胀阀在设定时间段T内的功率，j＝1,2,3,……,N2，N2为待机状态室内机的数量。 When the multi-link mechanism is hot running, the calculation formula of the total power consumption of the indoor unit in the standby state during the set time period T is:
Figure PCTCN2018082113-appb-000027
Wherein, WE1 j for the j-th stage of the standby state of the indoor unit control board electrical load power for the set time period T, Wf1 j for the j-th stage standby indoor electronic expansion valve within a set time period T Power, j = 1, 2, 3, ..., N2, N2 are the number of indoor units in standby.
多联机制热运行时，室外机电控板空载功耗(W w0·T)由所有室内机平均 分担，室外机的压缩机功耗、室外风机功耗、室外机电控阀功耗，即P w·T，由制热运行的室内机分担，根据室内机的换热面积大小(防冷风状态时)或换热量大小(正常制热状态时)按比例分配；即，根据每台制热运行室内机在设定时间段内的换热面积或换热量的占比将室外机功耗P w·T分配至每台制热运行室内机。 When the multi-link mechanism is hot running, the no-load power consumption (W w 0·T) of the outdoor electromechanical control board is shared equally by all indoor units, the compressor power consumption of the outdoor unit, the power consumption of the outdoor fan, and the power consumption of the outdoor electromechanical control valve. , that is, P w ·T, which is shared by the indoor unit of the heating operation, and is proportionally distributed according to the heat exchange area of the indoor unit (in the case of preventing cold air) or the amount of heat exchange (in the normal heating state); that is, according to each The ratio of the heat exchange area or the heat exchange amount of the indoor heating operation indoor unit during the set time period distributes the outdoor unit power consumption P w ·T to each heating operation indoor unit.
在多联机制热运行过程中，每个设定时间段T计算出室内机的总功耗后，保存至室外机电控板的存储器内，并上传给集中控制器(或服务监控器)存储。In the hot operation process of the multi-connection mechanism, after calculating the total power consumption of the indoor unit for each set time period T, it is saved in the memory of the outdoor electromechanical control board and uploaded to the centralized controller (or service monitor) for storage. .
在一个计费周期内，计算每个设定时间段内的室内机总功耗，并计算每台室内机的累计功耗和。在本实施例中，设定时间段T为1秒，以便于功耗计算。In a billing cycle, the total power consumption of the indoor unit in each set time period is calculated, and the cumulative power consumption of each indoor unit is calculated. In the present embodiment, the set time period T is 1 second to facilitate power consumption calculation.
例如，在一个计费周期内，室外机电控板在上电启动，时间清零(t＝0)，开始计时，从存储器内读取每台室内机在该计费周期内上次运行的功率累计值W0。For example, in a billing cycle, the outdoor electromechanical control board is powered on, the time is cleared (t=0), the timing is started, and each indoor unit is read from the memory and is last run during the billing period. Power accumulation value W0.
在t＝T时，根据步骤S1至S4，计算出第n台制热运行室内机在第一个设定时间段T内的总功耗Wz n(t＝T)，累计功耗值为Wz n(t＝T)+W0。 When t=T, according to steps S1 to S4, the total power consumption Wz n (t=T) of the nth heating operation indoor unit in the first set time period T is calculated, and the cumulative power consumption value is Wz. n (t=T)+W0.
在t＝2T时，根据步骤S1至S4，计算出第n台制热运行室内机在第二个设定时间段T内的总功耗Wz n(t＝2T)，累计功耗值为Wz n(t＝2T)+Wz n(t＝T)+W0。 At t=2T, according to steps S1 to S4, the total power consumption Wz n (t=2T) of the nth heating operation indoor unit in the second set time period T is calculated, and the cumulative power consumption value is Wz. n (t=2T)+Wz n (t=T)+W0.
依次类推，直至该台室内机此次制热运行结束。And so on, until the indoor heating operation of the indoor unit ends.
本实施例的多联机制热运行分户计量方法，获得每台制热运行室内机在设定时间段T内的功率和换热量，获得室外机在设定时间段T内的功率，将室外机电控板空载功耗平均分配至所有室内机，根据每台制热运行室内机在设定时间段内的换热面积占比(防冷风状态时)或换热量占比(正常制热状态时)将室外机压缩机功耗、室外风机功耗、室外机电控阀功耗分配至每台制热运行室内机，计算出每台制热运行室内机在设定时间段T内的总功耗；提高了分户计量的公平性和准确性；而且，本实施例的计量方法，不增加多联机硬件成本，不使用电度表，实现多联机能耗分户分配，降低了分户计量成本，便于分户计量的推广应用；而且，本实施例的方法，简单易行，便于实现。In the multi-connection mechanism of the embodiment, the household energy metering method is used to obtain the power and heat exchange amount of each heating operation indoor unit in the set time period T, and obtain the power of the outdoor unit in the set time period T, The no-load power consumption of the outdoor electrical control panel is evenly distributed to all indoor units, and the proportion of heat exchange area (in the case of anti-cold wind state) or the amount of heat exchange in the set time period is calculated according to each heating operation indoor unit (normal In the heating state, the power consumption of the outdoor unit compressor, the power consumption of the outdoor fan, and the power consumption of the outdoor electromechanical control valve are distributed to each heating operation indoor unit, and each heating operation indoor unit is calculated for a set time period T. The total power consumption within the user; the fairness and accuracy of the household metering are improved; Moreover, the metering method of the embodiment does not increase the cost of multiple online hardware, does not use the electricity meter, realizes the multi-line energy consumption household distribution, and reduces The household metering cost is convenient for the promotion and application of the household metering; moreover, the method of the embodiment is simple and easy to implement.
室外机电控板在上电启动后，启动时钟信号，和集中控制器(或服务监控器)、室内机电控板进行通讯，校正室外机时钟、室内机时钟和集中控制器(或服务监控器)一致。室外机电控板从其储存器内读取前期的每台室内机功耗的累计值，发送给集中控制器(或服务监控器)，集中控制器(或服务监控器)将接收到累计值与自身存储的对应室内机的功率累计值进行比较，如果不存在差异，则从原来存储区域开始存储数据；如果存在差异，则将接收到的累计值存储在新建的存储区，并将差异和时间数据储存在集中控制器(或服务监控器)的异常区，便于后续查找差异原因。然后集中控制器(或服务监控器)发送允许室内机开机的信号(或者室内机开机信号)给室外机电控板，室外机电控板根据接收到的开机信号，待机3min后控制室内机开始运行，然后执行步骤S1至S4，进行分户计量。After the power-on, the outdoor electrical control board starts the clock signal, communicates with the centralized controller (or service monitor), the indoor electrical control board, and corrects the outdoor unit clock, the indoor unit clock, and the centralized controller (or service monitoring). Consistent. The outdoor electrical control board reads the accumulated value of the power consumption of each indoor unit in the previous period from its storage and sends it to the centralized controller (or service monitor). The centralized controller (or service monitor) will receive the accumulated value. Comparing with the accumulated power value of the corresponding indoor unit stored by itself, if there is no difference, the data is stored from the original storage area; if there is a difference, the received accumulated value is stored in the newly created storage area, and the difference is The time data is stored in the anomaly area of the centralized controller (or service monitor) to facilitate subsequent search for the cause of the difference. Then, the centralized controller (or service monitor) sends a signal (or the indoor unit start signal) that allows the indoor unit to be turned on to the outdoor electromechanical control board, and the outdoor electromechanical control board controls the indoor unit after standby for 3 minutes according to the received start signal. Run, and then perform steps S1 to S4 to perform household metering.
基于上述多联机制热运行分户计量方法的设计，本实施例还提出了一种多联机制热运行分户计量系统，多联机包括室外机以及与室外机分别连接的多个室内机，所述计量系统主要包括：室内机功率获得模块、室内机换热量获得模块、室外机功率获得模块、制热运行室内机总功耗获得模块等，参见图2所示。Based on the design of the thermal operation household measurement method of the multi-connection mechanism described above, the present embodiment also proposes a multi-connection mechanism hot-run household metering system, and the multiple connections include an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit. The metering system mainly includes: an indoor unit power obtaining module, an indoor unit heat exchange quantity obtaining module, an outdoor unit power obtaining module, and a heating power running indoor unit total power consumption obtaining module, as shown in FIG. 2 .
室内机功率获得模块，用于获得每台制热运行室内机在设定时间段T内的功率：P n＝PF n+WE n+Wf n，其中，P n为第n台制热运行室内机在设定时间段T内的功率，PF n为第n台制热运行室内机的风机在设定时间段T内的功率，WE n为第n台制热运行室内机的电控板在设定时间段T内的空载功率，Wf n为第n台制热运行室内机的电子膨胀阀在设定时间段T内的功率，n＝1,2,3,……,N1，N1为制热运行室内机的数量。 The indoor unit power obtaining module is configured to obtain the power of each heating operation indoor unit in the set time period T: P n = PF n + WE n + Wf n , wherein P n is the nth heating operation room The power of the machine in the set time period T, PF n is the power of the fan of the nth heating operation indoor unit in the set time period T, and WE n is the electric control board of the nth heating operation indoor unit Set the no-load power in the time period T, Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit in the set time period T, n=1, 2, 3, ..., N1, N1 The number of indoor units operated for heating.
室内机换热量获得模块，用于获得每台制热运行室内机在设定时间段T内的换热量：H n＝1.01·G n·(Tout n-Tai n)；其中，H n为第n台制热运行室内机在设定时间段T内的换热量；G n为第n台制热运行室内机的风机在设定时间段T内的设定转速下的送风质量流量；Tout n为第n台制热运行室内机在设定时间段T内的出风口处的出风温度；Tai n为第n台制热运行室内机在设定时间段T内的进 风口处的进风温度。 The indoor unit heat exchange quantity obtaining module is configured to obtain the heat exchange amount of each heating operation indoor unit in the set time period T: H n = 1.01 · G n · (Tout n - Tai n ); wherein, H n The heat exchange amount of the nth heating operation indoor unit in the set time period T; G n is the air supply quality of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T Flow rate; Tout n is the outlet air temperature of the nth heating operation indoor unit at the air outlet in the set time period T; Tai n is the air inlet of the nth heating operation indoor unit within the set time period T The inlet air temperature at the place.
室外机功率获得模块，用于获得室外机在设定时间段T内的功率P w：
Figure PCTCN2018082113-appb-000028
其中，P w1为压缩机在设定时间段T内的功率，P w2为室外风机在设定时间段T内的功率，
Figure PCTCN2018082113-appb-000029
为室外机电控阀在设定时间段T内的功率，L为1,2,3……，M，M为室外机电控阀的数量。 The outdoor unit power obtaining module is configured to obtain the power P w of the outdoor unit during the set time period T:
Figure PCTCN2018082113-appb-000028
Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T,
Figure PCTCN2018082113-appb-000029
For the power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3, ..., M, M is the number of outdoor electromechanical control valves.
室外机功率获得模块包括压缩机功率计算单元、效率计算单元等。压缩机功率计算单元，用于通过公式P w1＝Vq·iq/η，计算出P w1；其中，Vq、iq为压缩机的q轴电压和电流。效率计算单元，用于通过公式
Figure PCTCN2018082113-appb-000030
计算η，其中，A、B、C为拟合常数，fmax、fmin为压缩机能够运行的最大频率和最小频率，f为压缩机实际运行的频率，I0为压缩机在当前频率下的额定电流。 The outdoor unit power obtaining module includes a compressor power calculating unit, an efficiency calculating unit, and the like. The compressor power calculation unit configured by the equation P w 1 = Vq · iq / η, calculate P w 1; wherein, Vq, iq is the q-axis voltage and compressor current. Efficiency calculation unit for passing the formula
Figure PCTCN2018082113-appb-000030
Calculate η, where A, B, and C are fitting constants, fmax and fmin are the maximum and minimum frequencies at which the compressor can operate, f is the actual operating frequency of the compressor, and I0 is the rated current of the compressor at the current frequency. .
制热运行室内机总功耗获得模块，用于计算每台制热运行室内机在设定时间段T内的总功耗：第n台制热运行室内机为防冷风状态时：
Figure PCTCN2018082113-appb-000031
第n台制热运行室内机正常制热状态时：
Figure PCTCN2018082113-appb-000032
其中，Pz n为第n台制热运行室内机在设定时间段T内的总功率；N2为待机状态的室内机的数量；W w0为室外机电控板在设定时间段T内的空载功率；A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积；A z为所有制热运行室内机在设定时间段T内的换热器的总换热面积；H z为所有制热运行室内机在设定时间段T内的总换热量。 The total power consumption obtaining module of the heating operation indoor unit is used for calculating the total power consumption of each heating operation indoor unit in the set time period T: when the nth heating operation indoor unit is in the cold prevention state:
Figure PCTCN2018082113-appb-000031
When the nth heating operation indoor unit is in normal heating state:
Figure PCTCN2018082113-appb-000032
Wherein, Pz n is the total power of the nth heating operation indoor unit in the set time period T; N2 is the number of indoor units in the standby state; W w 0 is the outdoor electric control board within the set time period T No-load power; A n is the heat exchange area of the heat exchanger in the nth heating operation indoor unit during the set time period T; A z is the heat exchange of all heating operation indoor units in the set time period T The total heat exchange area of the device; H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
所述系统还包括出风温度获取模块，出风温度获取模块用于通过公式
Figure PCTCN2018082113-appb-000033
获得Tout n；其中，K n为第n台制热运行室内机的风机在设定转速下的换热器制热工况下换热系数；A n为 第n台制热运行室内机在设定时间段T内的换热器的换热面积；Tsat为在设定时间段T内的压缩机排气压力对应的饱和温度，首先通过压力传感器检测出压缩机排气压力，再计算出排气压力对应的饱和温度Tsat；Tai n通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得。 The system further includes an air outlet temperature acquisition module, and an air outlet temperature acquisition module is used to pass the formula
Figure PCTCN2018082113-appb-000033
Obtaining Tout n ; wherein, K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit; A n is the nth heating operation indoor unit The heat exchange area of the heat exchanger in the fixed time period T; Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
所述系统还包括待机室内机总功耗获得模块，待机室内机总功耗获得模块用于在多联机制热运行时，获得每台待机状态室内机在设定时间段T内的总功耗；计算公式为：
Figure PCTCN2018082113-appb-000034
其中，WE1 j为第j台待机状态室内机的电控板在设定时间段T内的空载功率，Wf1 j为第j台待机状态室内机的电子膨胀阀在设定时间段T内的功率，j＝1,2,3,……,N2，N2为待机状态室内机的数量。 The system further includes a standby indoor unit total power consumption obtaining module, and the standby indoor unit total power consumption obtaining module is configured to obtain the total power consumption of each standby state indoor unit in the set time period T when the multi-connection mechanism is hot running. ; the calculation formula is:
Figure PCTCN2018082113-appb-000034
Wherein, WE1 j for the j-th stage of the standby state of the indoor unit control board electrical load power for the set time period T, Wf1 j for the j-th stage standby indoor electronic expansion valve within a set time period T Power, j = 1, 2, 3, ..., N2, N2 are the number of indoor units in standby.
具体的多联机制热运行分户计量系统的工作过程，已经在上述多联机制热运行分户计量方法中详述，此处不予赘述。The working process of the specific multi-link mechanism hot-run household metering system has been detailed in the above-mentioned multi-connection mechanism hot-run household metering method, and will not be described here.
本实施例的多联机制热运行分户计量系统，获得每台制热运行室内机在设定时间段T内的功率和换热量，获得室外机在设定时间段T内的功率，将室外机电控板空载功耗平均分配至所有室内机，根据每台制热运行室内机在设定时间段内的换热面积占比(防冷风状态时)或换热量占比(正常制热状态时)将室外机压缩机功耗、室外风机功耗、室外机电控阀功耗分配至每台制热运行室内机，计算出每台制热运行室内机在设定时间段T内的总功耗；提高了分户计量的公平性和准确性；而且，本实施例的计量方法，不增加多联机硬件成本，不使用电度表，实现多联机能耗分户分配，降低了分户计量成本，便于分户计量的推广应用；而且，本实施例的方法，简单易行，便于实现。The multi-connection mechanism of the embodiment is operated by the household metering system to obtain the power and heat exchange amount of each heating operation indoor unit in the set time period T, and obtain the power of the outdoor unit in the set time period T, The no-load power consumption of the outdoor electrical control panel is evenly distributed to all indoor units, and the proportion of heat exchange area (in the case of anti-cold wind state) or the amount of heat exchange in the set time period is calculated according to each heating operation indoor unit (normal In the heating state, the power consumption of the outdoor unit compressor, the power consumption of the outdoor fan, and the power consumption of the outdoor electromechanical control valve are distributed to each heating operation indoor unit, and each heating operation indoor unit is calculated for a set time period T. The total power consumption within the user; the fairness and accuracy of the household metering are improved; Moreover, the metering method of the embodiment does not increase the cost of multiple online hardware, does not use the electricity meter, realizes the multi-line energy consumption household distribution, and reduces The household metering cost is convenient for the promotion and application of the household metering; moreover, the method of the embodiment is simple and easy to implement.
以上实施例仅用以说明本发明的技术方案，而非对其进行限制；尽管参照前述实施例对本发明进行了详细的说明，对于本领域的普通技术人员来说，依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或替换，并不使相应技术方案的本质脱离本发明所要 求保护的技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still The technical solutions are described as being modified, or equivalents are replaced by some of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the technical solutions claimed in the present invention.

Claims (9)

  1. 一种多联机制热运行分户计量方法，所述多联机包括室外机以及与所述室外机分别连接的多个室内机，其特征在于：所述方法包括：A multi-connection mechanism hot-run household metering method, the multi-connection includes an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit, wherein the method includes:
    (1)获得每台制热运行室内机在设定时间段T内的功率：(1) Obtain the power of each heating operation indoor unit within the set time period T:
    P n＝PF n+WE n+Wf n， P n =PF n +WE n +Wf n ,
    其中，among them,
    P n为第n台制热运行室内机在设定时间段T内的功率， P n is the power of the nth heating operation indoor unit within the set time period T,
    PF n为第n台制热运行室内机的风机在设定时间段T内的功率， PF n is the power of the fan of the nth heating operation indoor unit during the set time period T,
    WE n为第n台制热运行室内机的电控板在设定时间段T内的空载功率， WE n is the no-load power of the electronic control board of the nth heating operation indoor unit in the set time period T,
    Wf n为第n台制热运行室内机的电子膨胀阀在设定时间段T内的功率， Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit during the set time period T,
    n＝1,2,3,……,N1，N1为制热运行室内机的数量；n=1, 2, 3, ..., N1, N1 is the number of indoor units for heating operation;
    (2)获得每台制热运行室内机在设定时间段T内的换热量：(2) Obtain the heat exchange amount of each heating operation indoor unit in the set time period T:
    H n＝1.01·G n·(Tout n-Tai n)； H n =1.01·G n ·(Tout n -Tai n );
    其中，H n为第n台制热运行室内机在设定时间段T内的换热量； Wherein, H n is the heat exchange amount of the nth heating operation indoor unit in the set time period T;
    G n为第n台制热运行室内机的风机在设定时间段T内的设定转速下的送风质量流量； G n is the air supply mass flow rate of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T;
    Tout n为第n台制热运行室内机在设定时间段T内的出风口处的出风温度； Tout n is the outlet air temperature of the nth heating operation indoor unit at the air outlet in the set time period T;
    Tai n为第n台制热运行室内机在设定时间段T内的进风口处的进风温度； Tai n is the inlet air temperature at the air inlet of the nth heating operation indoor unit during the set time period T;
    (3)获得室外机在设定时间段T内的功率P w： (3) Obtain the power P w of the outdoor unit during the set time period T:
    Figure PCTCN2018082113-appb-100001
    Figure PCTCN2018082113-appb-100001
    其中，P w1为压缩机在设定时间段T内的功率，P w2为室外风机在设定时间段T内的功率，
    Figure PCTCN2018082113-appb-100002
    为室外机电控阀在设定时间段T内的功率，L为1,2,3……，M，M为室外机电控阀的数量；     Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T,
    Figure PCTCN2018082113-appb-100002
    For the power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3, ..., M, M is the number of outdoor electromechanical control valves;
    (4)计算每台制热运行室内机在设定时间段T内的总功耗：(4) Calculate the total power consumption of each heating operation indoor unit during the set time period T:
    当制热运行室内机为防冷风状态时：
    Figure PCTCN2018082113-appb-100003
    When the heating operation indoor unit is in the cold-proof state:
    Figure PCTCN2018082113-appb-100003
    当制热运行室内机正常制热状态时：
    Figure PCTCN2018082113-appb-100004
    When the heating operation indoor unit is in normal heating state:
    Figure PCTCN2018082113-appb-100004
    其中，Pz n为第n台制热运行室内机在设定时间段T内的总功率； Wherein, Pz n is the total power of the nth heating operation indoor unit in the set time period T;
    N2为待机状态的室内机的数量；N2 is the number of indoor units in standby state;
    W w0为室外机电控板在设定时间段T内的空载功率； W w 0 is the no-load power of the outdoor electromechanical control board in the set time period T;
    A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积； A n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T;
    A z为所有制热运行室内机在设定时间段T内的换热器的总换热面积； A z is the total heat exchange area of the heat exchanger of all the heating operation indoor units in the set time period T;
    H z为所有制热运行室内机在设定时间段T内的总换热量。 H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
  2. 根据权利要求1所述的方法，其特征在于：通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得Tout n，通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得Tai n。 The method according to claim 1, wherein the Tout n is obtained by a temperature sensor disposed at an air inlet of the nth heating operation indoor unit, and is disposed at an air inlet of the nth heating operation indoor unit. The temperature sensor at the location is acquired to obtain Tai n .
  3. 根据权利要求1所述的方法，其特征在于：The method of claim 1 wherein:
    通过公式
    Figure PCTCN2018082113-appb-100005
    获得Tout n；     Through formula
    Figure PCTCN2018082113-appb-100005
    Obtain Tout n ;
    其中，K n为第n台制热运行室内机的风机在设定转速下的换热器制热工况下换热系数； Wherein, K n is the heat transfer coefficient of the heat exchanger under the heating condition of the fan of the nth heating operation indoor unit at the set speed;
    A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积； A n is the heat exchange area of the heat exchanger of the nth heating operation indoor unit in the set time period T;
    Tsat为在设定时间段T内的压缩机排气压力对应的饱和温度，首先通过压力传感器检测出压缩机排气压力，再计算出排气压力对应的饱和温度Tsat；Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the compressor discharge pressure by the pressure sensor, and then calculating the saturation temperature Tsat corresponding to the exhaust pressure;
    Tai n通过布设在第n台制热运行室内机的进风口处的温度传感器采集获得。 Tai n is acquired by a temperature sensor disposed at the air inlet of the nth heating operation indoor unit.
  4. 根据权利要求1所述的方法，其特征在于：所述方法还包括：在多联机制热运行时，获得每台待机状态室内机在设定时间段T内的总功耗；The method according to claim 1, wherein the method further comprises: obtaining, during the hot operation of the multi-connection mechanism, total power consumption of each indoor unit in the standby state for a set period of time T;
    计算公式为：
    Figure PCTCN2018082113-appb-100006
    The calculation formula is:
    Figure PCTCN2018082113-appb-100006
    其中，WE1 j为第j台待机状态室内机的电控板在设定时间段T内的空载功率， Wherein, WE1 j is the no-load power of the electronic control board of the jth standby state indoor unit in the set time period T,
    Wf1 j为第j台待机状态室内机的电子膨胀阀在设定时间段T内的功率， Wf1 j is the power of the electronic expansion valve of the jth standby indoor unit during the set time period T,
    j＝1,2,3,……,N2，N2为待机状态室内机的数量。j=1, 2, 3, ..., N2, N2 are the number of indoor units in the standby state.
  5. 根据权利要求1至4中任一项所述的方法，其特征在于：A method according to any one of claims 1 to 4, characterized in that:
    通过公式P w1＝Vq·iq/η，计算出P w1； By the equation P w 1 = Vq · iq / η, calculate P w 1;
    其中，Vq、iq为压缩机的q轴电压和电流；Where Vq, iq are the q-axis voltage and current of the compressor;
    η为压缩机驱动模块效率，计算公式为：η is the efficiency of the compressor drive module, and the calculation formula is:
    Figure PCTCN2018082113-appb-100007
    Figure PCTCN2018082113-appb-100007
    其中，A、B、C为拟合常数，fmax、fmin为压缩机能够运行的最大频率和最小频率，f为压缩机实际运行的频率，I0为压缩机在当前频率下的额定电流。Among them, A, B, and C are fitting constants, fmax and fmin are the maximum frequency and minimum frequency at which the compressor can operate, f is the frequency at which the compressor actually operates, and I0 is the rated current of the compressor at the current frequency.
  6. 一种多联机制热运行分户计量系统，所述多联机包括室外机以及与所述室外机分别连接的多个室内机，其特征在于：所述系统包括：A multi-connection mechanism hot-running household metering system, the multi-line includes an outdoor unit and a plurality of indoor units respectively connected to the outdoor unit, wherein the system comprises:
    室内机功率获得模块，用于获得每台制热运行室内机在设定时间段T内的功率：P n＝PF n+WE n+Wf n，其中，P n为第n台制热运行室内机在设定时间段T内的功率，PF n为第n台制热运行室内机的风机在设定时间段T内的功率，WE n为第n台制热运行室内机的电控板在设定时间段T内的空载功率，Wf n为第n台制热运行室内机的电子膨胀阀在设定时间段T内的功率，n＝1,2,3,……,N1，N1为制热运行室内机的数量； The indoor unit power obtaining module is configured to obtain the power of each heating operation indoor unit in the set time period T: P n = PF n + WE n + Wf n , wherein P n is the nth heating operation room The power of the machine in the set time period T, PF n is the power of the fan of the nth heating operation indoor unit in the set time period T, and WE n is the electric control board of the nth heating operation indoor unit Set the no-load power in the time period T, Wf n is the power of the electronic expansion valve of the nth heating operation indoor unit in the set time period T, n=1, 2, 3, ..., N1, N1 The number of indoor units operating for heating;
    室内机换热量获得模块，用于获得每台制热运行室内机在设定时间段T内的换热量：H n＝1.01·G n·(Tout n-Tai n)；其中，H n为第n台制热运行室内机在设定时间段T内的换热量；G n为第n台制热运行室内机的风机在设定时间段T内的 设定转速下的送风质量流量；Tout n为第n台制热运行室内机在设定时间段T内的出风口处的出风温度；Tai n为第n台制热运行室内机在设定时间段T内的进风口处的进风温度； The indoor unit heat exchange quantity obtaining module is configured to obtain the heat exchange amount of each heating operation indoor unit in the set time period T: H n = 1.01 · G n · (Tout n - Tai n ); wherein, H n The heat exchange amount of the nth heating operation indoor unit in the set time period T; G n is the air supply quality of the fan of the nth heating operation indoor unit at the set rotation speed within the set time period T Flow rate; Tout n is the outlet air temperature of the nth heating operation indoor unit at the air outlet in the set time period T; Tai n is the air inlet of the nth heating operation indoor unit within the set time period T Inlet temperature at the place;
    室外机功率获得模块，用于获得室外机在设定时间段T内的功率P w：
    Figure PCTCN2018082113-appb-100008
    其中，P w1为压缩机在设定时间段T内的功率，P w2为室外风机在设定时间段T内的功率，
    Figure PCTCN2018082113-appb-100009
    为室外机电控阀在设定时间段T内的功率，L为1,2,3……，M，M为室外机电控阀的数量；     The outdoor unit power obtaining module is configured to obtain the power P w of the outdoor unit during the set time period T:
    Figure PCTCN2018082113-appb-100008
    Where P w 1 is the power of the compressor in the set time period T, and P w 2 is the power of the outdoor fan in the set time period T,
    Figure PCTCN2018082113-appb-100009
    For the power of the outdoor electromechanical control valve in the set time period T, L is 1, 2, 3, ..., M, M is the number of outdoor electromechanical control valves;
    制热运行室内机总功耗获得模块，用于计算每台制热运行室内机在设定时间段T内的总功耗：当制热运行室内机为防冷风状态时：
    Figure PCTCN2018082113-appb-100010
    当制热运行室内机正常制热状态时：
    Figure PCTCN2018082113-appb-100011
    其中，Pz n为第n台制热运行室内机在设定时间段T内的总功率；N2为待机状态的室内机的数量；W w0为室外机电控板在设定时间段T内的空载功率；A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积；A z为所有制热运行室内机在设定时间段T内的换热器的总换热面积；H z为所有制热运行室内机在设定时间段T内的总换热量。     The total power consumption obtaining module of the heating operation indoor unit is used for calculating the total power consumption of each heating operation indoor unit in the set time period T: when the heating operation indoor unit is in the cold prevention state:
    Figure PCTCN2018082113-appb-100010
    When the heating operation indoor unit is in normal heating state:
    Figure PCTCN2018082113-appb-100011
    Wherein, Pz n is the total power of the nth heating operation indoor unit in the set time period T; N2 is the number of indoor units in the standby state; W w 0 is the outdoor electric control board within the set time period T No-load power; A n is the heat exchange area of the heat exchanger in the nth heating operation indoor unit during the set time period T; A z is the heat exchange of all heating operation indoor units in the set time period T The total heat exchange area of the device; H z is the total heat exchange amount of all the heating operation indoor units in the set time period T.
  7. 根据权利要求6所述的系统，其特征在于：所述系统还包括：The system of claim 6 wherein said system further comprises:
    出风温度获取模块，用于通过公式Outlet temperature acquisition module for passing the formula
    Figure PCTCN2018082113-appb-100012
    获得Tout n；其中，K n为第n台制热运行室内机的风机在设定转速下的换热器制热工况下换热系数；A n为第n台制热运行室内机在设定时间段T内的换热器的换热面积；Tsat为在设定时间段T内的压缩机排气压力对应的饱和温度，首先通过压力传感器检测出压缩机排气压力，再计算出排气压力对应的饱和温度Tsat；Tai n通过布设在第n 台制热运行室内机的进风口处的温度传感器采集获得。
    Figure PCTCN2018082113-appb-100012
    Obtaining Tout n ; wherein, K n is the heat transfer coefficient of the heat exchanger under the set speed of the fan of the nth heating operation indoor unit; A n is the nth heating operation indoor unit The heat exchange area of the heat exchanger in the fixed time period T; Tsat is the saturation temperature corresponding to the compressor discharge pressure in the set time period T, firstly detecting the discharge pressure of the compressor through the pressure sensor, and then calculating the discharge air pressure corresponding saturation temperature Tsat; Tai n routed by a temperature sensor at the inlet to the n-th heating operation of the indoor unit collection obtained.
  8. 根据权利要求6所述的系统，其特征在于：所述系统还包括：The system of claim 6 wherein said system further comprises:
    待机室内机总功耗获得模块，用于在多联机制热运行时，获得每台待机状态室内机在设定时间段T内的总功耗；计算公式为：
    Figure PCTCN2018082113-appb-100013
    其中，WE1 j为第j台待机状态室内机的电控板在设定时间段T内的空载功率，Wf1 j为第j台待机状态室内机的电子膨胀阀在设定时间段T内的功率，j＝1,2,3,……,N2，N2为待机状态室内机的数量。     The standby indoor unit total power consumption obtaining module is configured to obtain the total power consumption of each standby state indoor unit in the set time period T during the hot operation of the multi-connection mechanism; the calculation formula is:
    Figure PCTCN2018082113-appb-100013
    Wherein, WE1 j for the j-th stage of the standby state of the indoor unit control board electrical load power for the set time period T, Wf1 j for the j-th stage standby indoor electronic expansion valve within a set time period T Power, j = 1, 2, 3, ..., N2, N2 are the number of indoor units in standby.
  9. 根据权利要求6至8中任一项所述的系统，其特征在于：所述室外机功率获得模块包括：The system according to any one of claims 6 to 8, wherein the outdoor unit power obtaining module comprises:
    压缩机功率计算单元，用于通过公式P w1＝Vq·iq/η，计算出P w1；其中，Vq、iq为压缩机的q轴电压和电流； The compressor power calculation unit configured by the equation P w 1 = Vq · iq / η, calculate P w 1; wherein, Vq, iq compressor current and q-axis voltage;
    效率计算单元，用于通过公式Efficiency calculation unit for passing the formula
    Figure PCTCN2018082113-appb-100014
    计算η，其中，A、B、C为拟合常数，fmax、fmin为压缩机能够运行的最大频率和最小频率，f为压缩机实际运行的频率，I0为压缩机在当前频率下的额定电流。
    Figure PCTCN2018082113-appb-100014
    Calculate η, where A, B, and C are fitting constants, fmax and fmin are the maximum and minimum frequencies at which the compressor can operate, f is the actual operating frequency of the compressor, and I0 is the rated current of the compressor at the current frequency. .
PCT/CN2018/082113 2017-10-31 2018-04-08 Method and system for separate metering during heating operation of multi-split air conditioner WO2019085391A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711051044.7 2017-10-31
CN201711051044.7A CN108050645A (en) 2017-10-31 2017-10-31 A kind of multi-connected machine heating operation divided gauging method and system

Publications (1)

Publication Number Publication Date
WO2019085391A1 true WO2019085391A1 (en) 2019-05-09

Family

ID=62119893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/082113 WO2019085391A1 (en) 2017-10-31 2018-04-08 Method and system for separate metering during heating operation of multi-split air conditioner

Country Status (2)

Country Link
CN (1) CN108050645A (en)
WO (1) WO2019085391A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111667637A (en) * 2020-05-11 2020-09-15 中外运冷链物流有限公司 Method for calculating electricity charge of single refrigeration house of centralized refrigeration system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109855245B (en) * 2019-02-13 2021-09-21 青岛海尔空调电子有限公司 Multi-split air conditioning system and heat exchange amount calculation method thereof
CN110160213B (en) * 2019-04-26 2021-11-26 青岛海尔空调电子有限公司 Method for metering power consumption of indoor unit of multi-connected air conditioner
CN110260452B (en) 2019-05-24 2022-01-04 青岛海尔空调电子有限公司 Multi-split air conditioning system and heat exchange amount calculation method thereof
CN114251806B (en) * 2020-09-24 2023-07-28 广东美的制冷设备有限公司 Air conditioner control method and device, air conditioner and readable storage medium
CN112762574B (en) * 2021-01-21 2022-02-11 广东美的暖通设备有限公司 Indoor unit power consumption detection method, heat recovery multi-split air conditioner, storage medium and device
CN113237258B (en) * 2021-05-31 2023-06-20 青岛海尔空调电子有限公司 Air conditioning unit and defrosting control method thereof
CN113465140B (en) * 2021-06-08 2022-08-02 深圳市英威腾网能技术有限公司 Air conditioner monitoring method and device, air conditioner controller and storage medium
CN114151932B (en) * 2021-11-22 2023-04-18 青岛海信日立空调系统有限公司 Energy consumption monitoring platform of multi-split system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1712843A (en) * 2004-06-21 2005-12-28 乐金电子(天津)电器有限公司 Air conditioning system with plural indoor units and its operation
CN102607741A (en) * 2011-01-22 2012-07-25 格兰富水泵(上海)有限公司 Cold and heat metering control and cost allocation system and method
EP2704367B1 (en) * 2012-08-30 2016-10-12 EnBW Energie Baden-Württemberg AG Consumer control method and control device based on an energy consumption profile
CN106771566A (en) * 2016-12-09 2017-05-31 珠海格力电器股份有限公司 Household-based charging method for multiple online air conditioners, device and system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1712843A (en) * 2004-06-21 2005-12-28 乐金电子(天津)电器有限公司 Air conditioning system with plural indoor units and its operation
CN102607741A (en) * 2011-01-22 2012-07-25 格兰富水泵(上海)有限公司 Cold and heat metering control and cost allocation system and method
EP2704367B1 (en) * 2012-08-30 2016-10-12 EnBW Energie Baden-Württemberg AG Consumer control method and control device based on an energy consumption profile
CN106771566A (en) * 2016-12-09 2017-05-31 珠海格力电器股份有限公司 Household-based charging method for multiple online air conditioners, device and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111667637A (en) * 2020-05-11 2020-09-15 中外运冷链物流有限公司 Method for calculating electricity charge of single refrigeration house of centralized refrigeration system

Also Published As

Publication number Publication date
CN108050645A (en) 2018-05-18

Similar Documents

Publication Publication Date Title
WO2019085391A1 (en) Method and system for separate metering during heating operation of multi-split air conditioner
US20190287147A1 (en) Variable refrigerant flow system with electricity consumption apportionment
CN109061288B (en) Household charging method, device and system for multi-split system and charging terminal
CN102455093B (en) Energy efficiency controlling method for refrigerating system
CN107314498A (en) The efficiency on-line monitoring method and device of a kind of central air conditioner system
Wang et al. Field test investigation of a double-stage coupled heat pumps heating system for cold regions
CN102043907A (en) Real-time cold load determination method of air-conditioner room
CN111723533B (en) Energy-saving calculation method for variable-frequency water pump of ground source heat pump system
CN105091220B (en) Power consumption quantity measuring method, device and the air conditioner of air conditioner
CN106123251B (en) A kind of convertible frequency air-conditioner consumption power calculation algorithms
CN1869533A (en) Energy-saving device of network type digital multivariable central air conditioning system
CN109374963A (en) A kind of air-conditioning voltameter calculation method
CN106839206B (en) Multi-connected air conditioning system and operation control method thereof
CN104654525A (en) Air conditioner host machine increase and decrease control method and device as well as air conditioner system
CN212320014U (en) Cooling system
CN101922783A (en) Enthalpy control-based method and system for controlling energy conservation of air conditioner
CN111947278B (en) Cooling system and control method thereof
CN112330885A (en) Central air conditioner charging method, system, charging management equipment and storage medium
CN108006893A (en) A kind of multi-connected machine heating operation divided gauging method and system
CN201293423Y (en) Highly effective energy-conserving control system of central air-conditioner
CN105091223B (en) Power consumption quantity measuring method, device and the air conditioner of air conditioner
CN105066346B (en) Power consumption quantity measuring method, device and the air conditioner of air conditioner
WO2021160593A1 (en) Thermal energy assembly
CN108583212B (en) New energy automobile heat pump air conditioner components of a whole that can function independently control system
WO2019085390A1 (en) Method and system for separate metering during refrigeration operation of multi-split air conditioner

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18872400

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18872400

Country of ref document: EP

Kind code of ref document: A1