CN1924471A - Energy-saving air conditioner controller capable of smoothing electricity consumption peak - Google Patents

Abstract

This invention relates to one air conditioning energy saving control device with buffer peak, which comprises the following parts: micro processor, indoor temperature sensor, air conditioning outdoor power switch control circuit, occupancy controller and memory module for memoryDeltT and interval occupancy relative memory module, micro processor composed of temperature control module, current temperature read module, DeltT computer module, supply circle set module, circle initial time set module, outdoor supply occupancy module; Temperature control module output is connected to operation control circuit and the outdoor supply occupancy computing module is connected to controller.

Description

A kind of energy-saving air conditioner controller with mild peak of power consumption

(1) technical field

The present invention relates to the application in air-conditioning economize on electricity, administration of energy conservation of a kind of air conditioner energy saving technology, Computer Control Technology, electronic technology and the communication technology.

(2) background technology

Owing to electricity shortage, the hardship of serious electric network power-fail is tasted varieties of in the city in recent years.The exhausting of the energy affects that energy prices on every side are higher and problem continues to worsen that each is economized, and particularly the enterprise of coastal economy comparison developed regions is just enduring the hardship of the energy to the fullest extent, and in electricity shortage, enterprise can only move 3 to 4 days weekly.Manufacturing development is added increasing population and is used air-conditioning, and this double factor has promoted energy-consuming to increase apace, makes energy problem become national and even global problem.The energy use efficiency of China is 1/3 of a developed country at present, and a large amount of energy are being consumed as idle work.Energy problem has become the great bottleneck of restriction China economic development.The contradiction of electricity shortage when also just aggravating peak of power consumption along with the increasing air-conditioning use of growth in the living standard.Because the seasonality of air conditioning electricity, period and explosive, some electric power expert is referred to as " the electrical network killer " who influences safe power supply with it.

Little air-conditioning has become the large electricity consumer, and concerning the each household resident, this is not a big numeral, but calculates the air-conditioning in the whole nation, and numeral is just surprisingly big.The statistics of China refrigerating and air conditioning industry association shows, China every one hundred houses family air-conditioning installation amount was 61.79 in 2003, National urban family is about 1.2 hundred million, Urban House room air conditioner owning amount is 7,400 ten thousand, the air-conditioning electricity needs is about 7,500 ten thousand kilowatts, is about about 20% of national generating capacity in 2003.Add the power load of central air-conditioning, add up to 12,500 ten thousand kilowatts, account for 33% of national installed power.Statistics shows that in East China Power Grid peak load summer in 2004, the ratio of air-conditioning temperature-reducing load surpasses 30%, and Beijing, Shanghai surpass 40%, and Hong Kong has reached 60%.By every year the quiet 1,700 ten thousand cover air-conditionings that increase calculate, present Urban House room air conditioner owning amount will be above 100,000,000 in 2005 in China, if supposing the annual time of using of every air-conditioning is words about 500 hours, 1000 watts of power consumption of 100,000,000 cover average every covers of air-conditioning are guarded calculating so, and this just will consume 500,*1*,100,0=1,000 hundred million degree with regard to family's air-conditioning.Because the seasonality of air conditioning electricity, period and explosive, add air conditioner load near and surpass whole network load 40% and become seasonal large electricity consumer, and the frequency modulation air-conditioning that uses has at present increased energy consumption when peak of power consumption, therefore need have a kind of technology to come mild peak of power consumption in the controller of air-conditioning, this is extremely important to power grid security.

Under heating cycle, the every reduction of indoor temperature can save energy 5-10% for 1 ℃; Under the cooling operating mode, every rising can save energy 10-20% for 1 ℃.Therefore in air-conditioning system, introduce thermal comfort index control, energy-conservation significant for system.Every 1 degree electricity of thermal power generation at present discharging carbon dioxide 0.8-2.5 kilogram, the price of carbon dioxide discharge-reduction quota per ton is about 4 dollars on international carbon element market, save kilowatt-hour, just be equivalent to save the water purification of 0.4 kilogram of standard coal and 4 liters, also can reduce the carbon dioxide of about 0.27 kilogram dust, 0.8-2.5 kilogram and 0.037 kilogram dischargings such as sulfur dioxide.Can not only save a large amount of valuable energy as society by adopting scientific method to use air-conditioning to reach using electricity wisely, also alleviate the pressure of environment simultaneously greatly, significant.

(3) summary of the invention

In order to overcome the deficiency that air conditioner energy saving is poor in the prior art, power consumption causes city peak of power consumption electric energy shortage greatly, the invention provides a kind of good energy saving property, have the energy-saving air conditioner controller of mild peak of power consumption function.

Technical scheme of the present invention is:

A kind of energy-saving air conditioner controller with mild peak of power consumption, comprise microprocessor, be used to detect the indoor temperature transmitter of indoor temperature, the power switch control circuit of air-conditioner outdoor unit, described microprocessor comprises temperature control modules, described temperature control modules comprises that indoor temperature is provided with unit, temperature comparing unit, the output that described indoor temperature transmitter, temperature are provided with module connects the temperature comparing unit, and the output of described temperature comparing unit connects " ON/OFF " control circuit of air-conditioner outdoor unit.

Described air conditioning control device also comprises the occupancy controller of the power supply that is used for dynamically setting off-premises station and is used for temperature value that storage system sets and the poor Δ T and the memory module of interrupting the dutycycle correspondence table of indoor temperature value.

Described microprocessor also comprises:

Data read module is used to read the data of indoor temperature transmitter;

Δ T computing module is used to calculate the poor of the temperature value that sets and current indoor temperature value;

The supply stop circle setting module, be used to set off-premises station power-up period;

Cycle zero-time setting module is used for setting at random the zero-time of the dutycycle power-up period of current off-premises station power supply;

Off-premises station power supply dutycycle computing module is used for according to Δ T, Δ T and interruption dutycycle correspondence table, and the interpolation calculation of tabling look-up obtains off-premises station power supply dutycycle.

The output of described off-premises station power supply dutycycle computing module connects occupancy controller.

Described microprocessor also comprises the power saving rate measurement module, and the electric power thus supplied, the temperature control modules electric power thus supplied that are used for according to the off-premises station power supply calculate power saving rate, and its formula is (3), (4):

$T_{\mathrm{two}-\mathrm{off}}=\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{TC}-\mathrm{off}}\left\{\begin{array}{cc}\mathrm{when}& t_{\mathrm{off}}\end{array}\right\}...\left(3\right);$

$\mathrm{Arate}(\%)=\frac{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}-T_{\mathrm{two}-\mathrm{off}}}{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{on}}+\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}}*100...\left(4\right);$

Wherein, ∑ t _TC-offBe owing to "off" state summation perdurabgility that temperature control modules produced, t in cycle break period _OffBe the "off" state time of temperature control modules in the one-period; ∑ t _OffBe illustrated in the one-period, temperature control modules control is "off" state perdurabgility down, ∑ t _OnBe illustrated in the one-period, temperature control modules control is "open" state perdurabgility down, T _Two-offBe illustrated in the one-period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.

Described air conditioning control device also comprises the outdoor temperature data acquisition unit that is used to detect outdoor temperature, and the outdoor temperature data acquisition unit connects data read module.

The correspondence table of described Δ T and dutycycle is represented with following formula (6):

$\mathrm{rate}(\%)=\frac{t_{\mathrm{off}}}{t_{\mathrm{on}}+t_{\mathrm{off}}}*100=f_1\left(\mathrm{\ΔT}\right),\mathrm{where},T_{\mathrm{out}}-T_{\mathrm{in}}\≥8,\mathrm{rate}(\%)=85...6)$

Wherein, f ₁Represented Δ T and the functional relation of interrupting dutycycle output, when the difference of system's outdoor temperature and indoor temperature value surpassed 8 ℃, dutycycle was 85%; t _OnBe "open" state perdurabgility in the one-period; t _OffBe "off" state perdurabgility in the one-period, T _OutBe current outdoor temperature; T _InBe current indoor temperature.

Described air-conditioning terminal is a plurality of, and described Current Temperatures read module reads the Current Temperatures of the temperature sensor of each air-conditioning terminal, and the output of described off-premises station power supply dutycycle computing module connects the occupancy controller of each air-conditioning terminal.

The output of described power saving rate measurement module connects display.

Described microprocessor comprises temperature control part branch, the additional control section of air-conditioning, and described temperature control part branch is a temperature control modules; The additional control section of described air-conditioning comprises Current Temperatures read module, Δ T computing module, supply stop circle setting module, cycle zero-time setting module, off-premises station power supply dutycycle computing module, power saving rate measurement module.

Beneficial effect of the present invention mainly shows: 1, by append the additional control section of air-conditioning on original air-conditioning temperature control basis, adopt the mode of periodicity power failure to control the energy-conservation of air-conditioning, with supply stop circle and cycle zero-time setting module, the peak of power consumption when the peak clipping method that realizes on average staggering is concentrated the use air-conditioning gently; 2, be provided with power saving rate measurement module and connect display, allow the user understand the electric energy of actual saving; 3, office block, factory can use communication interface to connect remote computer, the interruption dutycycle of each air-conditioning of the unified control of remote computer, set mild electricity consumption electric energy with supply stop circle and cycle zero-time.

(4) description of drawings

Fig. 1 is the temperature control principle figure of application point with the room temperature for present air-conditioning;

Fig. 2 is the energy-saving air conditioner controller schematic diagram with mild peak of power consumption;

Fig. 3 is that power failure is controlled the schematic diagram of measuring with actual power saving rate when air-conditioning pyrogenicity operating mode;

Fig. 4 is that power failure is controlled the schematic diagram of measuring with actual power saving rate when air-conditioning refrigeration operating mode;

Fig. 5 is the software and hardware block diagram of the energy-saving air conditioner controller of the mild peak of power consumption of a kind of energy;

Fig. 6 is for interrupting dutycycle control curve map;

The calculating schematic diagram of actual power saving rate when Fig. 7 controls for the power failure dutycycle;

Fig. 8 is the temperature Change curve map in some day in a certain Area during Summer;

Fig. 9 is with on average staggering supply stop circle time started mild electrical network peak of power consumption schematic diagram;

Figure 10 is the control block diagram of power failure dutycycle of the outdoor refrigeration host computer of some air-conditionings of a kind of computer centralized Control.

(5) specific embodiment

Below in conjunction with accompanying drawing the present invention is further described.

Embodiment one

Referring to Fig. 1-Fig. 8: a kind of energy-saving air conditioner controller with mild peak of power consumption, comprise microprocessor, be used to detect the indoor temperature transmitter of indoor temperature, the power switch control circuit of air-conditioner outdoor unit, described microprocessor comprises the temperature control part branch, the temperature control part branch is a temperature control modules, described temperature control modules comprises that indoor temperature is provided with the unit, the temperature comparing unit, described indoor temperature transmitter, the output that temperature is provided with module connects the temperature comparing unit, and the output of described temperature comparing unit connects " ON/OFF " control circuit of air-conditioner outdoor unit.

Described air conditioning control device also comprises the occupancy controller of the power supply that is used for dynamically setting off-premises station and is used for temperature value that storage system sets and the poor Δ T and the memory module of interrupting the dutycycle correspondence table of indoor temperature value.

Described microprocessor comprises that also air-conditioning adds control section:

Data read module is used to read the data of indoor temperature transmitter;

Δ T computing module is used to calculate the poor of the temperature value that sets and current indoor temperature value;

The supply stop circle setting module, be used to set off-premises station power-up period;

Cycle zero-time setting module is used for setting at random the zero-time of the dutycycle power-up period of current off-premises station power supply;

Off-premises station power supply dutycycle computing module is used for according to Δ T, Δ T and interruption dutycycle correspondence table, and the interpolation calculation of tabling look-up obtains off-premises station power supply dutycycle.

The output of described off-premises station power supply dutycycle computing module connects occupancy controller.

Described air conditioning control device also comprises the outdoor temperature data acquisition unit that is used to detect outdoor temperature, and the outdoor temperature data acquisition unit connects data read module.

The correspondence table of described Δ T and dutycycle is represented with following formula (6):

$\mathrm{rate}(\%)=\frac{t_{\mathrm{off}}}{t_{\mathrm{on}}+t_{\mathrm{off}}}*100=f_1\left(\mathrm{\ΔT}\right),\mathrm{where},T_{\mathrm{out}}-T_{\mathrm{in}}\≥8,\mathrm{rate}(\%)=85...6)$

Wherein, f ₁Represented Δ T and the functional relation of interrupting dutycycle output, when the difference of system's outdoor temperature and indoor temperature value surpassed 8 ℃, dutycycle was 85%; t _OnBe "open" state perdurabgility in the one-period; t _OffBe "off" state perdurabgility in the one-period, T _OutBe current outdoor temperature; T _InBe current indoor temperature.

Described microprocessor also comprises the power saving rate measurement module, and the electric power thus supplied, the temperature control modules electric power thus supplied that are used for according to the off-premises station power supply calculate power saving rate, and the output of power saving rate measurement module connects display, and its formula is (3), (4):

$T_{\mathrm{two}-\mathrm{off}}=\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{TC}-\mathrm{off}}\left(\begin{array}{cc}\mathrm{when}& t_{\mathrm{off}}\end{array}\right)...\left(3\right);$

$\mathrm{Arate}(\%)=\frac{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}-T_{\mathrm{two}-\mathrm{off}}}{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{on}}+\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}}*100...\left(4\right)$

Wherein, ∑ t _TC-offBe owing to "off" state summation perdurabgility that temperature control modules produced, t in cycle break period _OffBe the "off" state time of temperature control modules in the one-period; ∑ t _OffBe illustrated in the one-period, temperature control modules control is "off" state perdurabgility down, ∑ t _OnBe illustrated in the one-period, temperature control modules control is "open" state perdurabgility down, T _Two-offBe illustrated in the one-period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.

Fig. 2 has appended air-conditioning additional control section 30, occupancy controller 32 and outdoor temperature sensor 31 on original basis.

The additional control section 30 of described air-conditioning mainly is connected with D/A converter 2, I/O interface 16 and display 23 by A/D and constitutes, as shown in Figure 5,

Gather the humiture data of indoor and outdoor and the rotating speed of setting indoor machine fan by described A/D and D/A converter 2; Described I/O interface 16 obtains " ON/OFF " information of AX2 relay tip 29e, BX2 relay tip 29d from power saving rate measurement mechanism 29 from power saving rate hardware measuring unit 17; Described I/O interface 16 sends " ON/OFF " information to occupancy controller 20 according to the result of calculation of off-premises station power supply dutycycle computing module 13, described occupancy controller 20 control relay Rx121 " ON/OFF " action; Described display 23 shows from the information such as actual power saving rate that power saving rate calculates and demonstration output module 15 calculates.

Fig. 3 is the system principle of compositionality figure of air-conditioning at time electric control of pyrogenicity situation and power saving rate control survey device.In Fig. 3, the control of economizing on electricity of 24 pairs of electric heater units 23 of electricity-saving control device.And, measure actual power saving rate according to power saving rate measurement mechanism 25.Electric heater unit 23 is made of the thermostat 23b of heater 23a and this heater 23a serial connection, and power supply AC220v provides electric energy to the electric heater machine 23 that comprises thermostat 23b, by electricity-saving control device 24 it is controlled.In Fig. 3, the contact of electric heater machine 23 and the RX1 relay 24b that controlled by the occupancy controller 24a of electricity-saving control device 24 is connected in series with another contact 24c of RX1 relay, so heater 23a and thermostat 23b couple together the formation current supply circuit by RX1 relay tip 24c.The contact 24c of RX1 relay is a normally closed contact, when economizing on electricity control, electricity-saving control device 24 all is not in normally off, remain when situation to electric heater unit 23 power supplies, heater 23a carries out " ON/OFF " control according to the action of thermostat 23b.Thermostat 23b when detect indoor temperature set temperature when following its contact close, surmount the time contact that sets temperature and disconnect.The economize on electricity control of described electricity-saving control device 24 is carried out compulsory periodic interruption of power supply mode to electric heater unit 23 and is realized.Here, electricity-saving control device 24 control of economizing on electricity is by economize on electricity control module 24a RX1 relay 24b to be carried out " ON/OFF " control, also will produce corresponding " ON/OFF " state like this on RX1 relay tip 24c.That is, when RX1 relay 24b was in "off" state, electric power was fed to electric heater unit 23 and also just is in the state of cutting off the electricity supply.When cutting off the electricity supply, heater 23a must be in the state that does not have power supply.

In the described electricity-saving control device 24 micro computer is housed,, RX1 relay 24b is carried out periodically " ON/OFF " control according to the interruption dutycycle that sets in advance.For example, one hour is divided into 4 " ON/OFF " cycles, if the time duration in each " ON/OFF " " pass " in the cycle is 3 minutes, that is to say by RX1 relay 24b and undertaken carrying out 3 minutes "off" states again after the "open" state in 12 minutes that the power saving rate of this control mode is 20% in theory.The computing formula of power saving rate is formula (1):

$\mathrm{rate}(\%)=\frac{t_{\mathrm{off}}}{t_{\mathrm{on}}+t_{\mathrm{off}}}*100...\left(1\right)$

In the formula: t _OnBe "open" state perdurabgility in the one-period; t _OffBe "off" state perdurabgility in the one-period.

But the above-mentioned power saving rate that obtains only is to have considered to carry out the power savings that periodically " ON/OFF " control is produced by RX1 relay 24b.In fact, above-mentioned thermostat 23b can carry out " ON/OFF " action to reach the temperature in the control room to heater 23a too, for the action with thermostat makes a distinction with the effect of interrupting the power failure that dutycycle produced, introduce the notion of temperature control action rate here among the present invention.A temperature control action sequence figure describes below Fig. 7, high level represents that heater 23a is in the energising situation, low level represents that the attemperating unit heater 23a that works is in the no power situation, therefore can calculate temperature control action rate in 1 hour by this temperature control action sequence figure, in 1 hour, have 6 temperature controls action, amounting to the time is the 3+1+2.5+2.5+1.5+1=11.5 branch, and its temperature control rate hourly is (11.5/60) * 100=19.The computing formula of temperature control action rate is formula (2):

$\mathrm{TCrate}(\%)=\frac{\mathrm{\Σ}{t}_{\mathrm{TC}-\mathrm{off}}}{\mathrm{\Σ}{t}_{\mathrm{TC}-\mathrm{on}}+\mathrm{\Σ}{t}_{\mathrm{TC}-\mathrm{off}}}*100...\left(2\right)$

In the formula: ∑ t _TC-offIt is "off" state summation perdurabgility in the time cycle; ∑ t _TC-onIt is "open" state summation perdurabgility in the time cycle.

When considering to have adopted the power failure duty-cycle to economize on electricity, the computational problem that an actual power saving rate is arranged, that is to say the actual conduction time that will consider when calculating actual power saving rate heater 23a, be the result who is acted on simultaneously by RX1 relay 24b and thermostat 23b this actual conduction time.Describe with Fig. 3, when the contact of thermostat 23b is in " pass " operating state, at this moment heater 23a also is in " pass " state, even cut off power supply forcibly to electric heater unit 23, this action of cutting off the electricity supply is produced by thermostat 23b action, thereby can not be called economize on electricity in this time of cutting off the electricity supply.Therefore to obtain actual power saving rate, also must deduct " pass " state time of thermostat 23b, just need to adopt the power saving rate measurement mechanism 25 among Fig. 3 in order accurately to measure actual power saving rate from " pass " state time of RX1 relay 24b.The AX1 relay 25b of the "on" position that detects heater 23a and the BX1 relay 25c that whether is in power supply state that detection comprises the electric heater unit 23 of thermostat 23b are arranged in power saving rate measurement mechanism 25.Power saving rate measuring unit 25a is set in power saving rate measurement mechanism 25 in addition, dispose micro computer in this unit, according to the operating state that the state-detection of AX1 relay tip 25e " ON/OFF " is monitored AX1 relay 25c, according to the operating state that the state-detection of BX1 relay tip 25d " ON/OFF " is monitored BX1 relay 25b, record and this these operating state constantly in the internal memory of micro computer.Here, above-mentioned supply of electric power Stateful Inspection means are to realize with the AX1 relay 25c of AX1 relay tip 25e with BX1 relay 25b, running state monitoring means with BX1 relay tip 25d.Fig. 3 has represented the control example of a state of 1 hour that the electric power thus supplied of electric heater unit 23 is write down with the time order in the internal memory of the micro computer of power saving rate measuring unit 25a.The operating state of AX1 relay 25c has been represented the "on" position of electric heater 23a, and the operating state of BX1 relay 25b has been represented the power supply state to electric heater unit 23.On this time sequencing figure, low level is represented the "off" state that relay is in; High level is represented the "open" state of relay.That is to say that the operating state of AX1 relay 25c is a "open" state to heater 23a during high level, is "off" state during low level.Simultaneously, the operating state of BX1 relay 25b, high level are to be supply of electric power states to electric heater device 23, and low level is represented the dump state.Therefore when the power saving rate of realistic border, to deduct the low level state time of AX1 relay 25c during this time period from the low level state time of BX1 relay 25b.For Fig. 3, such as operating state T1 was arranged in one hour at BX1 relay 25b, T2, four "off" states of T3 and T4, be 3 minutes the perdurabgility of each "off" state, that is to say that in one hour it is 12 minutes that BX1 relay 25b is in "off" state total time, but notice in Fig. 3, when the low level state of AX1 relay 25c does not appear in the operating state of BX1 relay 25b among T1 and the T2 in the time period of " pass ", the low level state that in T3 and T4, has occurred AX1 relay 25c respectively, this time of twice was respectively 2.5 minutes and 1 minute, when the power saving rate of realistic border, will deduct this two times so, promptly, 12-2.5-1=8.5 minute, actual power saving rate is (8.5/60) * 100=14%.Therefore calculating actual power saving rate can finish in two steps, at first calculate in a time period, under the situation that power supply is cut off temperature control cold time accumulated value that works, with formula (3):

$T_{\mathrm{two}-\mathrm{off}}=\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{TC}-\mathrm{off}}\left(\begin{array}{cc}\mathrm{when}& t_{\mathrm{off}}\end{array}\right)...\left(3\right)$

In the formula: T _Two-offBe illustrated in the time period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.Had this cumulative time just can calculate actual power saving rate by through type (4):

$\mathrm{Arate}(\%)=\frac{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}-T_{\mathrm{two}-\mathrm{off}}}{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{on}}+\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}}*100...\left(4\right)$

In the formula: Arate (%) is illustrated in a time period

Middle actual power saving rate,

Be illustrated in the cumulative time that power supply is cut off in this time period.

There has been above-mentioned formula just can count with sky, the moon, year be the actual power saving rate of unit; Equally also can obtain with the sky is the actual power saving rate change curve of unit.In this patent, power failure dutycycle setting value is kept at respectively in two tables of data with temperature control action sequence data, these data are used for carrying out the statistics of actual power saving rate.With (ON/OFF) of state value (True/False) expression action, be example with movement state diagram shown in Figure 7 in table, can access the record of table 1, table 2, wherein table 1 is represented the sequential recording of dutycycle setting value, table 2 expression temperature control action sequence record.Listed the record in the 9:00 one hour in time since August in 2005 morning on the 1st in the table.

Table 1 power failure duty cycle sequence record data table

Date	Time	State
			…	…	…
2005-8-1	9:00:00	True
			2005-8-1	9:12:00	False
2005-8-1	9:15:00	True
			2005-8-1	9:27:00	False
2005-8-1	9:30:00	True
			2005-8-1	9:42:00	False
2005-8-1	9:45:00	True
			2005-8-1	9:57:00	False
…	…	…

Table 2 temperature control action sequence record data table

Date	Time	State
			…	…	…
2005-8-1	9:00:00	True
			2005-8-1	9:06:00	False
2005-8-1	9:09:00	True
			2005-8-1	9:17:30	False
2005-8-1	9:18:30	True
			2005-8-1	9:30:30	False
2005-8-1	9:33:00	True
			2005-8-1	9:41:30	False
2005-8-1	9:45:00	True
			2005-8-1	9:51:30	False
2005-8-1	9:53:00	True
			2005-8-1	9:59:00	False
…	…	…

The actual conditions data of operation of air conditioner have been write down in these two tables, from these recorded data, through type (1), formula (2), formula (3) and formula (4) calculate the indexs such as power failure rate, temperature control action rate and actual power saving rate of section sometime.

During for the air conditioner refrigerating situation, the method of the realization of considering and above-mentioned air-conditioning pyrogenicity situation are roughly the same, here economize on electricity to as if the refrigerating part of air-conditioning, air-conditioning refrigeration compressor when the refrigeration work state consumes the electric energy more than 70% in the whole air-conditioning approximately, has goodish energy-saving effect so the off-premises station (compressor) 27 of air-conditioning is carried out power failure economize on electricity control.Fig. 4 is the schematic diagram that air conditioner refrigerating is adopted power failure economize on electricity control.Air-conditioning is made of the indoor set 26 of air-conditioning and the off-premises station 27 of air-conditioning.The indoor set 26 of air-conditioning mainly is made of control module 26a, indoor fan 26b, temperature sensor 26c, Bx2 relay 26d and the Bx2 relay tip 26e etc. of air-conditioning, the control module 26a of air-conditioning carries out temperature control according to the detection of the temperature sensor 26c that is connected, and the air-conditioner outdoor unit 27 that Bx2 relay tip 26e is connected by Bx2 relay 26d carries out " ON/OFF " control.Use the off-premises station 27 of 28 pairs of air-conditionings of electricity-saving control device to carry out power failure economize on electricity control simultaneously.Come measurements and calculations power failure rate, temperature control action rate and actual power saving rate by power saving rate measurement mechanism 29, computational methods and above-mentioned formula (1), formula (2), formula (3) and formula (4) are just the same.Just change to some extent at hardware aspect, here the some parts in the above-mentioned pyrogenicity air-conditioning is replaced, electric heater unit 23 is replaced with air-conditioner outdoor unit 27, electricity-saving control device 24 replaces with electricity-saving control device 28, power saving rate measurement mechanism 25 replaces with power saving rate measurement mechanism 29, thermostat 23b replaces with Bx3 relay 26d and the Bx3 relay tip 26e that air-conditioning temperature controller 26a is controlled, simultaneously with PMV control module 24a, RX1 relay 24b, RX1 relay tip 24c, power saving rate measuring unit 25a, AX1 relay 25c, AX1 relay tip 25e, BX1 relay 25b, BX1 relay tip 25d PMV control module 28a, RX2 relay 28b, RX2 relay tip 28c, power saving rate measuring unit 29a, AX2 relay 29c, AX2 relay tip 29e, BX2 relay 29b, BX2 relay tip 29d replaces, and its effect is identical during with effect and air-conditioning pyrogenicity situation.

Described electricity-saving control device 28 carries out supply stop circle control according to supply stop circle that sets in supply stop circle among Fig. 5 and the cycle zero-time setting module 12 and cycle zero-time, supply stop circle can be selected in 10 minutes to 20 minutes, having adopted 15 minutes in the present embodiment is a supply stop circle, the supply stop circle action time started is adopted the random fashion decision, produces formula and is represented by formula (5);

Pstart＝INT(RANDC()*15) (5)

The number that is produced according to formula (5) is the random integers between 0 to 14, the probability that occurs any numerical value between 0 to 14 from the angle of probability all is identical, if the words of 100,000 operation of air conditioner are arranged on certain electrical network, it is identical that the air-conditioning supply stop circle action time started about 6666 is so just arranged, that is to say in certain supply stop circle of 15 minutes, there is the air-conditioning about 6666 to enter supply stop circle at first, there is the air-conditioning about 6666 to enter supply stop circle after one minute again, effect as shown in Figure 7, it is obvious especially when this effect is reflected in peak of power consumption, if to account for the load of whole electrical network be 40% to air conditioner load during peak of power consumption, the power failure dutycycle all is set to 15% words, as 15% of the mild peak of power consumption of this energy of air-conditioning, concerning whole electrical network, can play 6% of mild peak of power consumption value at least, be referred to as the peak clipping method that on average staggers in this patent.The peak clipping method that realizes on average staggering is relatively simple, when air-conditioning one energising, the additional control section of air-conditioning carries out the initialization supply stop circle and cycle zero-time setting module 12 is realized above-mentioned functions, this function can not produce any influence to the personal user, and be very favorable to whole power grid security, if estimate that present air-conditioning number is 100,000,000, adopt the newly-increased generated energy that just is equivalent to power station, newly-built Three Gorges after this technology.

For refrigeration air-conditioner, wind speed is an important indicator that influences people's thermal comfort, and air-flow also is the most cheap a kind of air-conditioning means simultaneously.If improve indoor air temperature when improving air velocity, this not only helps the energy-conservation of system can also improve indoor air quality greatly.Many researchs and experimental result shown when temperature is higher, wind speed reach 1m/s when above human body still feel comfortably cool.Because measuring wind needs air velocity transducer, this will cause the increase cost, because the rotating speed of blower fan is to become a kind of proportionate relationship with wind speed, in order to reduce cost and to simplify control algolithm, in this patent, adopted according to the rotating speed of setting indoor fan motor season, made problem obtain simplifying.In Fig. 8, dispose indoor set wind speed setting module, this module mainly is after obtaining information in season from system, if the judgment is Yes in summer, be no more than the rotating speed that improves blower fan under the noise prescribed limit situation as far as possible at fan noise, set wind speed generally speaking and can reach 1 to 1.4m/s, if the judgment is Yes in the winter time, rotating speed by this limit module blower fan is controlled at wind speed below the 0.5m/s, in other words, in case after obtaining information in season from system time, air-flow makes that just as an invariant air-conditioning control is more simple.

Consider from health perspectives, the temperature difference with indoor and outdoor in this patent is controlled in 8 ℃, adopted the method for adjusting indoor temperature according to outdoor temperature dynamic ground, be controlled under such temperature difference, no matter the people enters comfortable indoor from sweltering heat outdoor, still from comfortable indoor outdoor to sweltering heat, can both very fast adjustment adapt to, avoided because dizziness appears in the excessive people of causing of indoor/outdoor temperature-difference, easily degradation is uncomfortable under tired, general malaise and the immunologic function reacts; In case keep the operation of off-premises station when adopting the indoor and outdoor temperature difference to surpass 8 ℃ in this patent with very large interruption rate (85%), mainly be to keep indoor dehumidification function.

Therefore in the present embodiment for the control of summer air-conditioning, in indoor set wind speed setting module 14, set the indoor machine fan motor speed earlier then by D/A converter 2 control indoor set wind speed; In addition by operated key input indoor temperature control desired value, it is 26 ℃ for the temperature value of default situation system automatic setting; The dutycycle of regulating a period of time of air-conditioning power supply and interrupt then according to the indoor temperature that the sets control desired value and the difference of at present measured indoor temperature value, the control curve is by as shown in Figure 6, from the curve controlled form, the temperature value of setting (26 ℃) is more little with the dutycycle of the big more power failure of difference of at present measured indoor temperature value, the dutycycle that interrupt a period of time that measured indoor temperature value is powered near the temperature value (26 ℃) of default more is big more, when temperature value (26 ℃) consistent or that set in system is following when both or at indoor/outdoor temperature-difference during above 8 ℃, keeping power supply dutycycle to refrigeration host computer 85%, is formula (6) from the algorithm of its control:

$\mathrm{rate}(\%)=\frac{t_{\mathrm{off}}}{t_{\mathrm{on}}+t_{\mathrm{off}}}*100=f_1\left(\mathrm{\ΔT}\right)\mathrm{where},T_{\mathrm{out}}-T_{\mathrm{in}}\≥8,\mathrm{rate}(\%)=85...\left(6\right)$

In the formula (6): Δ T represents the poor of temperature value that system sets and measured indoor temperature value, more little from the dutycycle of the big more power failure of this difference of curve, otherwise the dutycycle of power failure is big more, how many how many power supplies this control algolithm can reach needs, the difference that is to say the temperature value that set by system and measured indoor temperature value is that variable function obtains outdoor refrigeration motor power failure dutycycle data, and Δ T is outdoor temperature and at that time indoor temperature poor at that time in the formula (6); T _OutBe current outdoor temperature; T _InBe current indoor temperature.

Fig. 6 has represented that the difference of temperature value that formula (6) sets and measured indoor temperature value is the variable function relation, and abscissa is the poor of the temperature value that sets and measured indoor temperature value, and ordinate is the dutycycle of power failure.Adopted in this patent in case indoor, the outdoor temperature difference when surpassing 8 ℃, the power failure of air-conditioning maintain a bigger value, such as getting 85, represent that so the power-on time of air-conditioning will be limited in per hour in 9 minutes.

The measurement of described outdoor temperature: 1, can increase an outdoor temperature sensor 5 that is installed in the outdoor place of sheltering from heat or light, outdoor temperature sensor 5 in Fig. 5 converts outdoor temperature to data by A/D converter 2 and sends to indoor and outdoor surroundings data read module 6, can increase cost though this mode is fairly simple; 2, the temperature sensor of utilization in outdoor unit, the outdoor temperature sensor 5 in Fig. 5 converts outdoor temperature to data by A/D converter 2 and sends to indoor and outdoor surroundings data read module 6.Because when start just, temperature sensor in the outdoor unit can be used as and detects outdoor temperature at that time, obtain starting shooting after at that time the outdoor temperature, utilize the daily temperature Changing Pattern of this area to infer that sometime outdoor temperature, the daily temperature Changing Pattern in area shown in Figure 6 are to be stored in the meteorological data memory module 7 according to the rule of temperature Change over the years of the locality mode with data then.For inferring and evaluation method, 8:20 enters office such as 1 morning of July, open air-conditioning, at this moment the temperature that detects in the air-conditioner outdoor unit group is 26 ℃, is 26 ℃ with regard to estimating outdoor temperature, As time goes on, outdoor temperature can change, Fig. 8 has represented certain area in summer one day temperature Change curve is 35 ℃ according to the outside air temperature in this history estimating at 2 o'clock in afternoon, infers and the computing of estimation is inferred in the module 9 in the outdoor environment humiture and carried out; 3, utilize temperature sensor indoor in the air-conditioning, indoor temperature during with the startup air-conditioning is as present outdoor temperature (condition is whether will detect the operation of air conditioner dwell time above 1 hour), Changing Pattern according to this city, the outdoor temperature of this every day in season goes to estimate outdoor temperature then, and supposition is identical with said method 2 with evaluation method; 4, utilize meteorological data, obtain at that time outdoor temperature according to the daily temperature Changing Pattern of this area then, this is a kind of not by the non-mode that directly obtains outdoor temperature of indoor and outdoor temperature sensor, and this mode is effective to the air-conditioning centralized Control in the office block.

Embodiment two

Referring to Fig. 1-Figure 10: for the enterprises and institutions of air-conditioning centralized management, can set the power failure dutycycle by the mode of network, different with embodiment one is that each the air-conditioning terminal in the enterprises and institutions is networked, therefore increased air conditioner energy saving management micro computer 41, interrupt dutycycle receiving element 42 and power saving rate data transmission unit 43, described micro computer 41 can use general PC, micro computer 41 is according to climatic condition, the Energy Saving Control index calculates the interruption dutycycle of every air-conditioning, send to the terminal of each air-conditioning then by network, interrupt dutycycle receiving element 42 according to the interruption dutycycle instruction that receives, directly control occupancy controller.

Described occupancy controller is realized by power amplification chip or electronic device, carries out the periodically effect of " ON/OFF " action through power amplification rear drive RX2 relay 28b or RX1 relay 24b; Described power saving rate data transmission unit 43 will send to micro computer 41 by network with the actual power saving rate that the method described in the embodiment one obtains, the actual power saving rate data that micro computer 41 is sended over according to the power saving rate data transmission unit 43 of each air-conditioning, count a day fractional energy savings, month fractional energy savings, annual energy-saving rate and various relevant reduce expenses and to the contribution data of environment, to realize effective management of the energy, the power consumption index emulation that can give according to the air conditioner load situation and the power supply department of our unit and the dutycycle of every air-conditioning of tentative calculation equally.

Other structures of present embodiment are identical with embodiment one with principle.

Claims (7)

1, a kind of energy-saving air conditioner controller with mild peak of power consumption, comprise microprocessor, be used to detect the indoor temperature transmitter of indoor temperature, the power switch control circuit of air-conditioner outdoor unit, described microprocessor comprises temperature control modules, described temperature control modules comprises that indoor temperature is provided with unit, temperature comparing unit, the output that described indoor temperature transmitter, temperature are provided with module connects the temperature comparing unit, the output of described temperature comparing unit connects " ON/OFF " control circuit of air-conditioner outdoor unit, it is characterized in that:

Described air conditioning control device also comprises the occupancy controller of the power supply that is used for dynamically setting off-premises station and is used for temperature value that storage system sets and the poor Δ T and the memory module of interrupting the dutycycle correspondence table of indoor temperature value;

Described microprocessor also comprises:

Data read module is used to read the data of indoor temperature transmitter;

Δ T computing module is used to calculate the poor of the temperature value that sets and current indoor temperature value;

The supply stop circle setting module, be used to set off-premises station power-up period;

Cycle zero-time setting module is used for setting at random the zero-time of the dutycycle power-up period of current off-premises station power supply;

Off-premises station power supply dutycycle computing module is used for according to Δ T, Δ T and interruption dutycycle correspondence table, and the interpolation calculation of tabling look-up obtains off-premises station power supply dutycycle;

The output of described off-premises station power supply dutycycle computing module connects occupancy controller.

2, a kind of energy-saving control device as claimed in claim 1 with mild peak of power consumption, it is characterized in that: described microprocessor also comprises the power saving rate measurement module, the electric power thus supplied, the temperature control modules electric power thus supplied that are used for according to the off-premises station power supply calculate power saving rate, and its formula is (3), (4):

$T_{\mathrm{two}-\mathrm{off}}=\begin{array}{ccc}\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{TC}-\mathrm{off}}& (\mathrm{when}& t_{\mathrm{off}})---\left(3\right);\end{array}$

$\mathrm{Arate}(\%)=\frac{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}-T_{\mathrm{two}-\mathrm{off}}}{\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{on}}+\underset{1}{\overset{n}{\mathrm{\Σ}}}{t}_{\mathrm{off}}}*100---\left(4\right);$

Wherein, ∑ t _TC-offBe owing to "off" state summation perdurabgility that temperature control modules produced, t in cycle break period _OffBe the "off" state time of temperature control modules in the one-period; ∑ t _OffBe illustrated in the one-period, temperature control modules control is "off" state perdurabgility down, ∑ t _OnBe illustrated in the one-period, temperature control modules control is "open" state perdurabgility down, T _Two-offBe illustrated in the one-period, power supply is cut off and temperature control is worked the simultaneous cumulative time of no power.

3, a kind of energy-saving control device as claimed in claim 1 with mild peak of power consumption, it is characterized in that: described air conditioning control device also comprises the outdoor temperature data acquisition unit that is used to detect outdoor temperature, and the outdoor temperature data acquisition unit connects data read module;

The correspondence table of described Δ T and dutycycle is represented with following formula (6):

$\begin{array}{cccc}\mathrm{rate}(\%)=\frac{t_{\mathrm{off}}}{t_{\mathrm{on}}+t_{\mathrm{off}}}*100=f_1\left(\mathrm{\ΔT}\right)& \mathrm{where}& T_{\mathrm{out}}-T_{\mathrm{in}}\≥8& \mathrm{rate}(\%)=85---\left(6\right)\end{array}$

Wherein, f ₁Represented Δ T and the functional relation of interrupting dutycycle output, when the difference of system's outdoor temperature and indoor temperature value surpassed 8 ℃, dutycycle was 85%; t _OnBe "open" state perdurabgility in the one-period; t _OffBe "off" state perdurabgility in the one-period, T _OutBe current outdoor temperature; T _InBe current indoor temperature.

4, a kind of energy-saving control device as claimed in claim 2 with mild peak of power consumption, it is characterized in that: described air conditioning control device also comprises the outdoor temperature data acquisition unit that is used to detect outdoor temperature, and the outdoor temperature data acquisition unit connects data read module;

The correspondence table of described Δ T and dutycycle is represented with following formula (6):

$\begin{array}{cccc}\mathrm{rate}(\%)=\frac{t_{\mathrm{off}}}{t_{\mathrm{on}}+t_{\mathrm{off}}}*100=f_1\left(\mathrm{\ΔT}\right)& \mathrm{where}& T_{\mathrm{out}}-T_{\mathrm{in}}\≥8& \mathrm{rate}(\%)=85---\left(6\right)\end{array}$

Wherein, f ₁Represented Δ T and the functional relation of interrupting dutycycle output, when the difference of system's outdoor temperature and indoor temperature value surpassed 8 ℃, dutycycle was 85%; t _OnBe "open" state perdurabgility in the one-period; t _OffBe "off" state perdurabgility in the one-period, T _OutBe current outdoor temperature; T _InBe current indoor temperature.

5, as the described a kind of energy-saving control device of one of claim 1-4 with mild peak of power consumption, it is characterized in that: described air-conditioning terminal is a plurality of, described Current Temperatures read module reads the Current Temperatures of the temperature sensor of each air-conditioning terminal, and the output of described off-premises station power supply dutycycle computing module connects the power supply occupancy controller of each air-conditioning terminal.

6, as the described a kind of energy-saving control device with mild peak of power consumption of one of claim 1-4, it is characterized in that: the output of described power saving rate measurement module connects display.

7, as the described a kind of energy-saving control device with mild peak of power consumption of one of right 1-4, it is characterized in that: described microprocessor comprises temperature control part branch, the additional control section of air-conditioning, and described temperature control part branch is a temperature control modules; The additional control section of described air-conditioning comprises Current Temperatures read module, Δ T computing module, supply stop circle setting module, cycle zero-time setting module, off-premises station power supply dutycycle computing module, power saving rate measurement module.

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