CN105570961A - Heat supply system of cascade electric heating regenerative furnace and control system and control method of heat supply system - Google Patents

Heat supply system of cascade electric heating regenerative furnace and control system and control method of heat supply system Download PDF

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Publication number
CN105570961A
CN105570961A CN201610101849.7A CN201610101849A CN105570961A CN 105570961 A CN105570961 A CN 105570961A CN 201610101849 A CN201610101849 A CN 201610101849A CN 105570961 A CN105570961 A CN 105570961A
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China
Prior art keywords
control
heating
controller
heat
cascade
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Pending
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CN201610101849.7A
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Chinese (zh)
Inventor
姜立兵
邓英
邢作霞
康爱国
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Beijing Shenggongda New Energy Technology Co Ltd
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Beijing Shenggongda New Energy Technology Co Ltd
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Priority to CN201610101849.7A priority Critical patent/CN105570961A/en
Publication of CN105570961A publication Critical patent/CN105570961A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00Central heating systems using heat accumulated in storage masses
    • F24D11/001Central heating systems using heat accumulated in storage masses district heating system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1096Arrangement or mounting of control or safety devices for electric heating systems

Abstract

The invention relates to the field of energy sources, in particular to a heat supply system of a cascade electric heating regenerative furnace and a control system and control method of the heat supply system. The heat supply system comprises a cloud platform and the control system connected with the cloud platform. The control system comprises a remote controller and local controllers; the local controllers mainly comprise a coordination controller, a heat balance controller, an air blower controller and a cascade heating controller; and the remote controller is in GPRS communication data connection with the local controllers, and the algorithm of the coordination controller is adopted to carry out system running program control, and complete functions of heating, heat supply, heat storage, energy saving and power grid load regulation of the heating regenerative furnace. The heat supply system can store heat, energy of off-peak electricity is sufficiently utilized, the control system and the control method achieve centralized monitoring in a manner of service of the upper-layer internet and the big-data cloud platform, heating is carried out according to needs, intelligent control is achieved, and the obvious environment-friendly benefits and economic benefits are achieved.

Description

Cascade electrical heating regenerative furnace heating system and control system thereof and control method
Technical field
The present invention relates to energy field, be specially cascade electrical heating regenerative furnace heating system and control system thereof and control method.
Background technology
Along with the requirement of environmental protection is more and more higher, electric furnace progressively replaces with coal burning boiler, and the poor efficiency that can reduce the fossil fuels such as coal to a certain extent directly burns, and reduces the unordered discharge of the gases such as carbon dioxide; But traditional electrical Heating Furnace Control method is simple, can not realize long-range and local control, the timely regulation and control demand of inapplicable heating system.
Summary of the invention
For above-mentioned technology contents, the invention provides a kind of can be applicable to heating electrical heating heating system and control system and control method.
Concrete technical scheme is:
Cascade electrical heating regenerative furnace heating system, comprises electrical heating regenerative furnace, heat exchanger, frequency conversion fan, also comprises cloud platform and the control system be connected; Heating element heater and the heat storage of multiple spot distribution is comprised in electrical heating regenerative furnace; The high temperature heat stored in heat storage utilizes the air channel circulatory system to carry out exchange heat by heat exchanger and water circulation system by frequency conversion fan, water circulation system carries out Flow-rate adjustment by load water pump, hot water is provided in the end-equipment of user, in water circulation system, also comprises water replanishing device.
The control system of cascade electrical heating regenerative furnace heating system, comprises remote controllers and local controller, and local controller mainly comprises tuning controller, thermal equilibrium control device, blower control and cascade heating controller; Tuning controller is connected with thermal equilibrium control device, blower control respectively; Thermal equilibrium control device, blower control are connected with cascade heating controller respectively; Blower control controls frequency conversion fan, and cascade heating controller controls the heating element heater of electrical heating regenerative furnace;
Remote controllers carry out GPRS communication data with the local controller at multiple scene and connect, and adopt the algorithm of tuning controller to carry out system runs program control, complete the function of the heating of electrical heating regenerative furnace, heat-conserving energy-saving multi and network load scheduling.
The control method of the control system of cascade electrical heating regenerative furnace heating system, the remote controllers of cloud platform are obtained by GPRS communicator and add heat and temperature, deliver to tuning controller, the local controller of tuning controller acquisition simultaneously parameter, local scene add heat parameters and heating power heating monitoring parameter, the difference of comparison object and actual heat, export and air blast controller according to cascade heating controller, complete the thermal equilibrium control of heat balance controller, i.e. the process control of the heat storage of electrical heating regenerative furnace; When the heating power heating monitoring temperature of user is less than default temperature, cascade heating controller and air blast controller, control the outside quantity of heat given up of electrical heating regenerative furnace, heating power heating purpose monitoring user temperature, air blast work is till user's temperature reaches design temperature;
When user's temperature is greater than design temperature, blower control controls air blast and quits work, and exothermic process terminates, and heat storage heat storage device continues heating, until heat balance controller realizes the control overflow of heating and accumulation of heat.
Wherein, the long-range control method of remote controllers:
Be sent to long-range data and temperature according to cloud platform and add the relation of heat, setting up a control law long-range, be used in combination with local controller;
By cloud platform data, tomorrow environment temperature Tt, user's local temperature Tn; Suppose, require that the heating temperature that reaches is To, the specific heat of material is k, thermal storage time from t1 to t2, then heat:
Q=∫t 1→t 2[(T o-T t)k]dt+∫t 1→t 2[(T o-T n)k]dt
Wherein, t1 to t2 was the short time in low ebb moment, per hourly marks off multistage short time, from 21 up to 6 time totally 10 hours;
When local controller not in time time, what regulate electrical heating regenerative furnace by remote controllers adds heat, when Long-distance Control with local controls to occur difference or asynchronous time, monitor adjustment with locality and be as the criterion.
Wherein, the local control method of local controller:
Local controller accepts control objectives that is long-range and on-site coordination, after the algorithm computing of local controller, realizes heat storage control by cascade heating controller;
The preset heating temperature of user is compared with observed temperature, obtain temperature gap △ T, as △ T>0, cascade heating controller controls the heating element heater work heating of electrical heating regenerative furnace, when △ T is not more than 0, the output of local controller, air blast controller and thermal equilibrium control device returns tuning controller and carries out loop control again.
Wherein, the control method of cascade heating controller:
Cascade heating controller is that the electrical heating accumulation of heat control system of electrical heating regenerative furnace regulates the control combination of distributed stove silk, according to the heat storage flow control method of local controller setting, realizes cascade computer heating control; Namely change adjustment by the combination of each different capacity heating element heater of grouping control and add heat.
Cascade electrical heating regenerative furnace heating system provided by the invention, can accumulation of heat, utilize trough-electricity heat production, make full use of the energy of trough-electricity, be beneficial to electrical network ebb electric power of dissolving, heating system takes the mode of scattered distribution, direct access user terminal, save pipe network loss, control system and control method realize Centralized Monitoring by internet, upper strata and large data cloud platform service mode, heat-obtaining Based Intelligent Control as required, has significant environmental benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is cascade electrical heating regenerative furnace heating system structure schematic diagram of the present invention;
Fig. 2 is the Control system architecture schematic diagram of cascade electrical heating regenerative furnace heating system of the present invention;
Fig. 3 is the control flow chart of the control system of cascade electrical heating regenerative furnace heating system of the present invention;
Fig. 4 is the control flow chart of local controller of the present invention.
Detailed description of the invention
Accompanying drawings the specific embodiment of the present invention.
For the electrical heating regenerative furnace of 100kW.The heating element heater of electrical heating regenerative furnace is heater strip, and heat storage cascading is in table 1.
Table 1 heat storage cascading allocation list
Cascade electrical heating regenerative furnace heating system, comprises electrical heating regenerative furnace 1, heat exchanger 2, frequency conversion fan 4, also comprises cloud platform 5 and the control system 6 be connected; Heating element heater and the heat storage of multiple spot distribution is comprised in electrical heating regenerative furnace 1; The high temperature heat stored in heat storage utilizes the air channel circulatory system to carry out exchange heat by heat exchanger 2 and water circulation system by frequency conversion fan 4, water circulation system carries out Flow-rate adjustment by load water pump, hot water is provided in the end-equipment 3 of user, in water circulation system, also comprises water replanishing device 7.
The control system of cascade electrical heating regenerative furnace heating system, as shown in Figure 2, comprise remote controllers k-1 and local controller k-7, local controller k-7 mainly comprises tuning controller k-3, thermal equilibrium control device k-9, blower control k-8 and cascade heating controller k-12; Tuning controller k-3 is connected with thermal equilibrium control device k-9, blower control k-8 respectively; Thermal equilibrium control device k-9, blower control k-8 are connected with cascade heating controller k-12 respectively; Blower control k-8 controls frequency conversion fan 4, and cascade heating controller k-12 controls the heating element heater of electrical heating regenerative furnace 1;
Remote controllers k-1 carries out GPRS communication data with the local controller k-7 at multiple scene and connects, adopt the algorithm of tuning controller k-3 to carry out system runs program control, complete the function of the heating of electrical heating regenerative furnace, heat-conserving energy-saving multi and network load scheduling.
The control flow of the control system of cascade electrical heating regenerative furnace heating system as shown in Figure 3.
Set up a cloud platform 5, and apply GPRS, by cloud platform and each local monitor of electrical heating regenerative furnace 1 and control system 6 communication.Cloud platform 5 is divided into three parameter collection parts, based on the condition such as latitude, height above sea level, tomorrow prediction temperature, electric network swim of locality, be input in cloud platform 5 by temperature parameter, meteorologic parameter, electrical network parameter, each moment Real-Time Monitoring value of local monitor is also uploaded to cloud platform 5.Remote controllers K-1 is by intelligence learning, GPRS, and collected by the Real-time Monitoring Data in cloud platform 5, remote worker can control long-range.On the other hand, each parameter value in cloud platform 5, monitor value will be stored in RAM, as parameter collection and adjustment.
By the remote controllers k-1 on cloud platform 5, prediction nocturnal temperature tomorrow is 0 DEG C, and when night 23, setting user temperature is 18 DEG C, by GPRS by preset parameter value communication to local controller k-7.The local control method of local controller k-7 as shown in Figure 4.
End-equipment 3 Current Temperatures of user is every two hours monitored once, and suppose that end-equipment 3 real time temperature of local monitor display user is 14 DEG C, real time temperature transfers to remote controllers k-1.Local controller k-7 calculates the temperature difference needs heat dissipation capacity q=40kWh, and radiation processes loss 5kw, remote controllers k-1 calculates simultaneously needs pure amount of stored heat to be 40kWh, so heat storage amount is 85kW.Cascade heating controller k-12 adopts cascading mode to call 50kW × 1,20kWx1,10kW × 1,5kW × 1, and four groups of heating wire works, specifically in table 2.
The control table of table 2 heat storage cascading stove silk
After the end-equipment 3 monitor display of user reaches design temperature, frequency conversion fan 4 quits work, and exothermic process terminates.Storage heater continues accumulation of heat.
Heat-accumulating process up to 6 time, continues 10 hours from 21 altogether.
Pure amount of stored heat+the heat dissipation capacity of amount of stored heat Q=.
Table 3 low ebb temperature is to agreing heat list
Accumulation of heat through a night accumulates, and heat-accumulating process completes, and daytime can stop electrical heating, utilizes the heat spreader heating of accumulation.

Claims (6)

1. cascade electrical heating regenerative furnace heating system, comprise electrical heating regenerative furnace (1), heat exchanger (2), frequency conversion fan (4), it is characterized in that, also comprise cloud platform (5) and the control system be connected (6); Heating element heater and the heat storage of multiple spot distribution is comprised in electrical heating regenerative furnace (1); The high temperature heat stored in heat storage utilizes the air channel circulatory system to carry out exchange heat by heat exchanger (2) and water circulation system by frequency conversion fan (4), water circulation system carries out Flow-rate adjustment by load water pump, hot water is provided in the end-equipment (3) of user, in water circulation system, also comprises water replanishing device (7).
2. the control system of cascade electrical heating regenerative furnace heating system according to claim 1, it is characterized in that: comprise remote controllers (k-1) and local controller (k-7), local controller (k-7) mainly comprises tuning controller (k-3), thermal equilibrium control device (k-9), blower control (k-8) and cascade heating controller (k-12); Tuning controller (k-3) is connected with thermal equilibrium control device (k-9), blower control (k-8) respectively; Thermal equilibrium control device (k-9), blower control (k-8) are connected with cascade heating controller (k-12) respectively; Blower control (k-8) controls frequency conversion fan (4), and cascade heating controller (k-12) controls the heating element heater of electrical heating regenerative furnace (1);
Remote controllers (k-1) carry out GPRS communication data with the local controller (k-7) at multiple scene and connect, adopt the algorithm of tuning controller (k-3) to carry out system runs program control, complete the function of the heating of electrical heating regenerative furnace, heat-conserving energy-saving multi and network load scheduling.
3. the control method of the control system of cascade electrical heating regenerative furnace heating system according to claim 2, is characterized in that:
The remote controllers (k-1) of cloud platform are obtained by GPRS communicator (k-2) and add heat and temperature, deliver to tuning controller (k-3), tuning controller (k-3) obtains local controller (k-7) parameter simultaneously, local scene adds heat and arranges (k-5) parameter and heating power heating monitoring parameter, the difference (k-6) of comparison object and actual heat, export and air blast controller (k-8) according to cascade heating controller (k-12), complete the thermal equilibrium control of heat balance controller (k-9), the i.e. process control of the heat storage of electrical heating regenerative furnace, default temperature is less than when the heating power heating of user monitors (k-4) temperature, cascade heating controller (k-12) and air blast controller (k-8), control the outside quantity of heat given up of electrical heating regenerative furnace, heating power heating monitoring (k-4) monitor user ' temperature, air blast work is till user's temperature reaches design temperature,
When user's temperature is greater than design temperature, blower control (k-8) controls air blast and quits work, exothermic process terminates, heat storage heat storage device (k-10) continues heating, until heat balance controller (k-9) realizes the control overflow of heating and accumulation of heat.
4. the control method of the control system of cascade electrical heating regenerative furnace heating system according to claim 3, is characterized in that, the long-range control method of described remote controllers (k-1):
Be sent to long-range data and temperature according to cloud platform and add the relation of heat, setting up a control law long-range, be used in combination with local controller (k-7);
By cloud platform data, tomorrow environment temperature Tt, user's local temperature Tn; Suppose, require that the heating temperature that reaches is To, the specific heat of material is k, thermal storage time from t1 to t2, then heat:
Wherein, t1 to t2 was the short time in low ebb moment, per hourly marks off multistage short time, from 21 up to 6 time totally 10 hours;
When local controller (k-7) not in time time, what regulate electrical heating regenerative furnace by remote controllers (k-1) adds heat, when Long-distance Control with local controls to occur difference or asynchronous time, monitor adjustment with locality and be as the criterion.
5. the control method of the control system of cascade electrical heating regenerative furnace heating system according to claim 3, is characterized in that, the local control method of described local controller (k-7):
Local controller (k-7) accepts long-range and control objectives that is on-site coordination, after the algorithm computing of local controller (k-7), realizes heat storage control by cascade heating controller (k-12);
The preset heating temperature of user is compared with observed temperature, obtain temperature gap △ T, as △ T>0, cascade heating controller (k-12) controls the heating element heater work heating of electrical heating regenerative furnace, when △ T is not more than 0, the output of local controller (k-7), air blast controller (k-8) and thermal equilibrium control device (k-9) returns tuning controller (k-3) and carries out loop control again.
6. the control method of the control system of cascade electrical heating regenerative furnace heating system according to claim 3, is characterized in that: the control method of described cascade heating controller (k-12):
The electrical heating accumulation of heat control system that cascade heating controller (k-12) is electrical heating regenerative furnace regulates the control combination of distributed stove silk, according to the heat storage flow control method that local controller (k-7) sets, realizes cascade computer heating control; Namely change adjustment by the combination of each different capacity heating element heater of grouping control and add heat.
CN201610101849.7A 2016-02-24 2016-02-24 Heat supply system of cascade electric heating regenerative furnace and control system and control method of heat supply system Pending CN105570961A (en)

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Publication number Priority date Publication date Assignee Title
CN111414023A (en) * 2020-05-07 2020-07-14 秦洋 Electric control heat supply control system

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CN111414023A (en) * 2020-05-07 2020-07-14 秦洋 Electric control heat supply control system

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