CN102410596A - Combined cooling and power scheduling system of water source heat pump and scheduling method thereof - Google Patents
Combined cooling and power scheduling system of water source heat pump and scheduling method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 12
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- 238000005057 refrigeration Methods 0.000 claims description 46
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Abstract
The invention provides a combined cooling and power scheduling system for adjusting power supply and cold water. The system comprises a water source heat pump, a thermal power generating unit, a centralized heat absorption type refrigerator which is installed at a hot water outlet of the water source heat pump, an air conditioner, an electric energy meter, a fan coil, a cold water gauge, first and second remote centralized controllers which are used for collecting power consumption data of the electric energy meter and cold water consumption data detected by the cold water gauge, and a scheduling control device which is used for controlling the water source heat pump, the thermal power generating unit, the air conditioner and the fan coil to operate by using the first and second remote centralized controllers. By collecting a pipeline distance between the user and the unit, a power supply output and a cold water output of the unit are rationally scheduled by utilizing the pipeline distance, so that a power load is leveled, the effects of 'load shifting' are achieved and the fuel resource is prevented from wasting; and meanwhile, the scheduling is more timely and accurate.
Description
Technical field
The present invention relates to city integrated energy supply system, relate in particular to a kind of utilization realizes the control of power system optimization to the scheduling of refrigeration duty method.
Background technology
Because the adjustment of the Chinese economic development and the industrial structure, the electric power peak-valley difference that power system exists is increasing year by year.The electric power peak-valley difference widens and makes power equipment on average utilize hourage to descend, and generating efficiency descends, and economic benefit reduces, and electric power netting safe running receives grave danger.Now peak load regulation network mainly adopts pure condensate formula fired power generating unit, but is characterized in: off-capacity, energy consumption are huge, less economical; And the thermoelectric online group of extraction condensing type is moved with " electricity determining by heat " mode by relevant regulation, cause electric load low ebb phase generated energy superfluous, and electric load peak period generated energy is not enough.Fig. 1 is an electric load curve.
The heating hot water of water resource heat pump output, because the restriction of fed distance and flow rate of hot water is sent to the user and had certain distance, the electric power of output then can arrive the user moment; In the prior art, not according to the distance between water resource heat pump and the user, rationally water resource heat pump is carried out the system and method for scheduling controlling, make scheduling more in time, accurately, the energy avoids waste.
Summary of the invention
The objective of the invention is to set up a kind of unit combined dispatching system and flat standardization dispatching method of electric load thereof to user's refrigeration; Obtain cold water behind the water-heating cooling of water resource heat pump output, adopt this cold water the user to be freezed, when needs reduce the current supply through fan coil; Use the generated energy of fired power generating unit; Freeze through air-conditioning, replenish because the refrigeration that reduction current supply causes is not enough, thereby filled up low power consumption.Make this system according to the distance between water resource heat pump and the user, rationally go out strength and fired power generating unit generated energy, and the power consumption of air conditioner user and refrigerating capacity are controlled the energy consumption when being adjusted in peak of power consumption and low ebb water resource heat pump is cold.
To achieve these goals, the present invention adopts following technical scheme:
A kind of unit combined dispatching system to user's refrigeration comprises: supply side equipment, detection and control appliance and a plurality of user side equipment; Supply side equipment comprises: be used to provide the water resource heat pump (A) of hot water and the fired power generating unit of generating, and the centralized heat absorption formula refrigeration machine of water resource heat pump hot water exit installation; Each user side equipment comprises: the power-actuated refrigerating plant that is sent by above-mentioned unit; Fan coil provides the cold water refrigeration by above-mentioned refrigeration machine; Non-refrigeration power consumer apparatus; Detection and control appliance comprise: the remote centralized controller, and gather the following data in a period of time: the cold water of said unit goes out strength and generated output electric weight; The power consumption total amount; The energy consumption of cold water; Each user and thermal source are the distance between the above-mentioned water resource heat pump; Integrated dispatch control device (115); According to above-mentioned distance; Calculate next period owing to reduce the not enough amount of cold feed in the fan coil that cold feed causes, this under-supply amount is replenished with the refrigerating capacity of said refrigerating plant, i.e. refrigerating plant power consumption is freezed; Calculate the power load power consumption total amount that next period comprises refrigerating plant thus; It is asked standard deviation; When this difference hour; Reach the flat standardization of power load, obtained the cooling power control signal of water resource heat pump, output electric power signal and the refrigerating plant power consumption control signal and the refrigerating capacity signal of fired power generating unit; The remote centralized controller is controlled the generated output electric weight of making strength and fired power generating unit of water resource heat pump according to the cooling power control signal of water resource heat pump, the output electric power signal of fired power generating unit; And control the refrigerating plant refrigerating capacity respectively and close the fan coil amount according to refrigerating plant power consumption control signal and refrigerating capacity signal.Said refrigerating plant is an air-conditioning.
Said remote centralized controller comprises the first long-range control centralized system device and the second long-range control centralized system device, and the first remote centralized controller is gathered the information of supply side equipment, and the second remote centralized controller is gathered the information of user side equipment.
Said detection and control appliance also comprise: the ammeter that detects said power consumer apparatus power consumption; Control the remote control switch of the refrigerating capacity of said refrigerating plant; Be used to detect the consumption gauge table of the data that said fan coil cold water consumes; The flowing water valve remote control switch of control fan coil; The control actuating unit of water resource heat pump.
Said integrated dispatch control device comprises: the non-refrigeration power consumption of reception user data, user's cold water consumption data, user pipe range information, water resource heat pump cold water go out the first data receiving element of the generated output electric weight of strength, fired power generating unit; The data decoder unit that all data that receive are decoded; The data memory unit that decoded all data are stored; Generate the scheduling control signal computing unit of scheduling control signal; Said scheduling control signal is carried out the encoded signals encoder; And the scheduling control signal after will encoding passes to the transmitting element of the first remote centralized controller, the second remote centralized controller.
Said control actuating unit comprises scheduling control signal transmitting-receiving coded stack, drive circuit and control device; Said scheduling control signal generates the instruction of water resource heat pump scheduling controlling after the decoding of scheduling control signal transmitting-receiving coded stack; Through the signal triggering control device of overdrive circuit output, control device is controlled the valve event of water resource heat pump again.
The integrated dispatch control device is connected with cloud computing calculation services system through power optical fiber, and the data of gathering are carried out cloud computing.
The second remote centralized controller comprises air-conditioning ammeter pulse counter, cold water flow pulse counter, the coded stack that connects successively, and interconnective control signal Rcv decoder and remote control signal generator.
Also proposed a kind of dispatch control method, unit has been carried out reasonably scheduling controlling to above-mentioned dispatching patcher.
Existing for prior art; Beneficial effect of the present invention is: rationally the power supply of cogeneration units is exerted oneself to exert oneself with cold water and dispatch, make electric load equal standardization, reached the effect of " peak load shifting "; The fuel source that avoids waste makes scheduling more in time, accurately simultaneously.
Description of drawings
Fig. 1 is electric load curve figure;
Fig. 2 is a combined heat and power dispatching patcher circuit diagram of the present invention;
Fig. 3 is the composition diagram of the second remote centralized controller;
Fig. 4 is the composition diagram of water resource heat pump control actuating unit 118;
Fig. 5 is the composition diagram of integrated dispatch control device 115;
Fig. 6 is the connection layout of cloud computing calculation services system 917;
Fig. 7 is load curve and the primitive curve comparison diagram after the flat standardization.
The specific embodiment
Below in conjunction with the description of drawings specific embodiment of the present invention.
Please with reference to shown in Figure 1, a kind of combined heat and power dispatching patcher of the present invention comprises: supply side equipment, detection and control appliance and user side equipment.
Supply side equipment comprises: be used for the water resource heat pump of output hot water and the fired power generating unit of generating, and the centralized heat absorption formula refrigeration machine of hot water exit's installation, when this unit reduces the hot water supply at it, be merely able to improve generated energy;
User side equipment comprises:
Through power cable 113 air-conditioner 108 parallelly connected with said fired power generating unit, the electric energy that said air-conditioner 108 is produced by said fired power generating unit drives and freezes; And the non-refrigeration power consumer apparatus (not drawing in the accompanying drawing 1) of fired power generating unit power supply;
Fan coil 110 through pipeline 114 is connected with the cold water delivery port of said water resource heat pump provides the cold water refrigeration by water resource heat pump;
Detection and control appliance comprise:
The air-conditioner remote control switch 117 of control air-conditioner 108;
The fan coil current consume gauge table 111, are used to detect the data that said fan coil 110 current consume;
The flowing water valve remote control switch 116 of control fan coil 110;
The first remote centralized controller 1121 is gathered the cold generated output electric weight that goes out strength and fired power generating unit of water resource heat pump; And, send integrated dispatch control device 115 to the cold generated output electric weight that goes out strength and fired power generating unit of the water resource heat pump of gathering;
The second remote centralized controller 1122 is gathered the power consumption data that the special-purpose electric energy meter 109 of said air-conditioner heat pump detects; Pipeline range information between record fan coil 110 and the water resource heat pump; Gather the fan coil current and consume the current consumption data that gauge table 111 detects; And then send power consumption data, the pipeline range information of fan coil 110, the current consumption data of air-conditioner to integrated dispatch control device 115;
Integrated dispatch control device 115 by the pipeline range information of the generated output electric weight of the cold water flow of water resource heat pump, fired power generating unit, user's fan coil 110, user's non-refrigeration electricity consumption data, generates scheduling control signal;
The first remote centralized controller 1121 receives the scheduling control signal that integrated dispatch control device 115 is sent, and moves with the control actuating unit 118 of this scheduling control signal control water resource heat pump;
The second remote centralized controller 1122 receives the scheduling control signal that integrated dispatch control device 115 is sent, and drives air-conditioner remote control switch 117, the 116 execution switching on and shutting down actions of fan coil flowing water valve remote control switch respectively with this scheduling control signal;
The centralized heat absorption formula refrigeration machine of installing at the hot water outlet place of water resource heat pump (not drawing in the accompanying drawing 1) is used for refrigeration with delivering to fan coil 110 behind the water-heating cooling.
Please with reference to Fig. 1, said electric energy meter 109 is coupled with said air-conditioner 108; Air-conditioner remote control switch 117 connects air-conditioner 108, is used to control the switch of air-conditioner 108.Electric energy meter 109 is connected separately with air-conditioner 108 through lead, is used to detect the power consumption data of said air-conditioner 108 refrigeration.Said current consume gauge table 111, are coupled with said fan coil 110, are used to detect the refrigeration power consumption data of institute's fan coil 110.6. said fan coil 110 is provided with controlled valve.
The second remote centralized controller 1122 is gathered the power consumption data of special-purpose electric energy meter 109 detections of air-conditioner and is sent integrated dispatch control device 115 to; Gather the fan coil current and consume the current consumption data that gauge table 111 detects, and put down in writing pipeline range information between this fan coil 110 and the water resource heat pump, and then send cold water consumption data and pipeline range information to integrated dispatch control device 115.
Please with reference to shown in Figure 2; The second remote centralized controller 1122 comprises air-conditioning ammeter pulse counter, non-refrigeration ammeter pulse counter (not shown), discharge pulse counter, pulse-code converter, metering signal amplifying emission device, control signal Rcv decoder and control signal remote control transmitter; Air-conditioning ammeter pulse counter connects the special-purpose electric energy meter 109 of air-conditioner; Be used to detect the power consumption data that the special-purpose electric energy meter 109 of air-conditioner detects, be sent to integrated dispatch control device 115 after power consumption data pulse signal coded conversion device that the detection of air-conditioning ammeter pulse counter obtains and metering signal amplifying emission device are handled;
Non-refrigeration ammeter pulse counter connects the non-refrigeration ammeter of user; Be used to detect the non-refrigeration power consumption of user data (promptly; User's power consumption data except that the air conditioner refrigerating power consumption), be sent to integrated dispatch control device 115 after the non-refrigeration power consumption of user data process pulse-code converter and metering signal amplifying emission device are handled;
The discharge pulse counter connects current and consumes gauge table 111; Be used to detect the data on flows that current consume gauge table 111, data on flows is sent to integrated dispatch control device 115 through the pipeline range information between pulse-code converter and metering signal amplifying emission device processing back and fan coil 110 and the water resource heat pump;
The control signal Rcv decoder; The scheduling control information that reception integrated dispatch control device 115 sends is also decoded, and through the control signal remote control transmitter control signal is sent to air-conditioner remote control switch 117, the 116 execution actions of flowing water valve remote control switch then.
Please with reference to shown in Figure 3; Unit control actuating unit 118 comprises scheduling control signal transmitting-receiving coded stack 302, drive circuit 303 and control device 304; Said scheduling control signal generates the machine unit scheduling control instruction after 302 decodings of scheduling control signal transmitting-receiving coded stack; Through the moving signal triggering control device 304 of overdrive circuit 303 outputs, control device 304 is controlled the valve event of water resource heat pump again.
Please with reference to Fig. 4, integrated dispatch control device 115 comprises:
Receive the non-refrigeration power consumption of user data, user's current consumption data, user pipe range information, the cold water flow of water resource heat pump, the generated output electric weight first data receiving element 201 of fired power generating unit; The data decoder unit 202 that all data that receive are decoded; The data memory unit 203 that decoded all data are stored; Generate the scheduling control signal computing unit 204 of scheduling control signal; Said scheduling control signal is carried out encoded signals encoder 205; And the scheduling control signal after will encoding passes to the transmitting element 206 of the first remote centralized controller 1121, the second remote centralized controller 1122.
Please with reference to Fig. 5, integrated dispatch control device 115 is connected with cloud computing calculation services system 917 through power optical fiber 120, and drives 917 calculating of cloud computing calculation services system, to obtain scheduling control signal; Integrated dispatch control device 115 receives cloud computing calculation services system 917 through power optical fiber 120 and calculates the scheduling control signal that obtains, and gives the first remote centralized controller, the second remote centralized controller via power cable or this scheduling control signal of wireless transmission method issue then.
The dispatching method of dispatching patcher of the present invention may further comprise the steps:
2 research steps
I. measure
(1) measures supply side: the constant cold activity of force H of going out of water resource heat pump
WSHPWith fired power generating unit generated output power P
CHP(t);
(2) measure user side: (i=0～N);
A) 0～N user apart from the pipeline of unit apart from S
i
With Δ T is the sampling period, collection 0～T following data in the time period:
B) the power consumption power P of 0～N the former day part of user
i(t);
C) the cold water consumed power H of 0～N the former day part of user
i(t);
D) 0～N user's installed capacity
of the air-conditioning of day part in the past
Ii calculates
(1) calculates the total power consumption of all users
(2) according to the day part total electricity consumption P that calculates in (1)
Sum(t) and fired power generating unit generated output power P
CHP(t), the electric load P of the following a period of time T～2T of prediction
Load(t), fired power generating unit generated output power P
CHP(t);
(3) user grouping: calculate the equivalent distances of each user to unit
With identical s
iThe user be divided into same group, count l group, l=s
i, add up to L group, L is a natural number, v be current at ducted flow velocity, Δ T is to be the above-mentioned sampling period unit adjusting time;
(4) the L group to getting in (3), obtain respectively:
H
Load(l)=∑ H
i(t, l); H
i(t is that l group user i is in t cold water consumed power constantly l);
Iii. control is calculated
(1) object function
Equivalent load after the wherein flat standardization defines as follows:
p
load(t)＝P
load(t)-(p
CHP(t)-P
CHP)+p
EHPs(t)(7)
Wherein, p
Load(t) be equivalent power load power after regulating, p
CHP(t) be generated output after regulating, p
EHPsAll user's power consumptions when (t) being t;
Equivalence electric load mean value defines as follows:
(2) constraint equation
A) refrigeration duty equilibrium equation
The refrigeration deficiency of refrigerating plant electricity consumption refrigeration water resource heat pump cold water is the core of method, the not enough power if Δ h (t) the expression t period freezes, and then, its expression formula is:
Δh(t)＝|H
WSHP-h
WSHP(t)| (9)
Wherein, h
WSHP(t) be to regulate that the back water resource heat pump is cold to go out activity of force;
T period Cold water supply deficiency is organized by each user and is used air-conditioning power consumption refrigeration to obtain, because the time delay of cold water transmission, also there is time-delay in the influence that cold water is not enough, and this time-delay is organized the variation of distance along with the user and changed; For example, according in the preceding text all users being divided into approximate 0,1; .., l ..; L user's group, for the 1st user group, the time that cold water flows to it is a unit scheduling duration; So the cold water deficiency also will have influence on the 1st user group in the t+1 period, in like manner, the cold water deficiency will have influence on l user's group at t+1; Eventually the above, t period current undersupply will be compensated through electricity consumption in t～t+L period respectively by the air-conditioning of 0～L user group, concrete formula is:
h
EHP(t+l l) is the t+l refrigeration work consumption sum of l group user air-conditioning constantly; h
EHP(t l) is the t refrigeration work consumption sum of l group user air-conditioning constantly;
If h in the formula
EHP(t l) can get 0, and on the one hand, some period, not all user's group was all participated in compensation; On the other hand, if surpassed the total activation time of regulation, the current undersupply does not have influence on the user's group that is in far-end yet, and these user's groups also will not participated in compensation so;
B) water resource heat pump:
The cold restriction of exerting oneself:
0≤h
WSHP(t)≤H
WSHP (6)
Water resource heat pump is thermoelectric than constraint:
h
WSHP(t)＝COP
WSHP·p
WSHP(t) (7)
Wherein, H
WSHPBe the water resource heat pump rated capacity; COP
WSHPBe the water resource heat pump coefficient of performance; h
WSHP(t) exert oneself for the cold of water resource heat pump t period; p
WSHP(t) be the power consumption of water resource heat pump t period;
C) user side air-conditioning constraint
Thermoelectric than constraint:
h
EHP(t，l)＝COP·p
EHP(t，l) (8)
The air-conditioning upper limit of exerting oneself:
0≤p
EHP(t，l)≤min(P
EHP(l)，H
load(l)/COP) (9)
Wherein, COP distributing air-conditioning thermoelectricity compares coefficient;
Last air-conditioning power consumption refrigeration both can compensate the deficiency of cold water refrigeration, and therefore the load of the low-valley interval that also can increase electric power, need obtain the refrigeration power consumption sum of all user's groups of day part:
P wherein
EHP(t, the power consumption of l group user air-conditioning when l) being t;
With the H that measures in the step I
WSHPWith the P that predicts among the step I i
CHP(t); Step I i) calculates variable P in
Load(t), H
Load(l), P
EHP(l) in substitution formula (1)～(10) and unite and find the solution, when object function Δ p is minimum of a value, tries to achieve and optimize back gained performance variable: the generated output p of fired power generating unit
CHP(t), the cold h that exerts oneself of water resource heat pump
WSHP(t), the different air-conditioning power consumption constantly of user p
EHP(t is l) with refrigerating capacity h
EHP(t, l);
Iv. send control signals to supply and user and carry out action
According to gained performance variable after the optimization of iii, variable signal is sent to supply side and user, carry out specifically action, as follows:
Generated output p according to fired power generating unit
CHP(t), the cold h that exerts oneself of water resource heat pump
WSHP(t), control fired power generating unit, water resource heat pump regulated the action of day part in the time in future;
According to the different air-conditioning power consumption constantly of user p
EHP(t is l) with refrigerating capacity h
EHP(t, l), control user side different distance user uses the air conditioner refrigerating amount, and closes the fan coil amount.
Fig. 7 is the flat standardization design sketch of the electric load after regulating, and can be known that by accompanying drawing 7 load electric has reached the effect of flat standardization.
Claims (9)
1. the unit combined dispatching system to user's refrigeration is characterized in that, comprising: supply side equipment, detection and control appliance and a plurality of user side equipment;
Supply side equipment comprises: be used to provide the water resource heat pump (A) of hot water and the fired power generating unit of generating, and the centralized heat absorption formula refrigeration machine of water resource heat pump hot water exit installation, so that water resource heat pump can provide cold water;
Each user side equipment comprises: the power-actuated refrigerating plant (108) that is sent by above-mentioned unit; Fan coil (110) provides the cold water refrigeration by above-mentioned refrigeration machine; Non-refrigeration power consumer apparatus;
Detection and control appliance comprise:
The remote centralized controller, gather the following data in a period of time: the cold water of said water resource heat pump goes out strength and fired power generating unit generated output electric weight; The power consumption total amount; The energy consumption of cold water; Each user and thermal source are the distance between the above-mentioned water resource heat pump;
Integrated dispatch control device (115); According to above-mentioned distance; Calculate next period owing to reduce the not enough amount of cold feed in the fan coil that cold feed causes, this under-supply amount is replenished with the refrigerating capacity of said refrigerating plant, i.e. refrigerating plant power consumption is freezed; Calculate the power load power consumption total amount that next period comprises refrigerating plant thus; It is asked standard deviation; When this difference hour; Reach the flat standardization of power load, obtained the cooling power control signal of water resource heat pump, output electric power signal and the refrigerating plant power consumption control signal and the refrigerating capacity signal of fired power generating unit;
The remote centralized controller is according to the cooling power control signal of water resource heat pump, the output electric power signal of fired power generating unit, and the refrigeration of control water resource heat pump goes out the generated output electric weight of strength and fired power generating unit; And control the refrigerating plant refrigerating capacity respectively and close the fan coil amount according to refrigerating plant power consumption control signal and refrigerating capacity signal.
2. dispatching patcher according to claim 1 is characterized in that: said refrigerating plant is an air-conditioning.
3. dispatching patcher according to claim 2; It is characterized in that: said remote centralized controller comprises the first long-range control centralized system device and the second long-range control centralized system device; The first remote centralized controller is gathered the information of supply side equipment, and the second remote centralized controller is gathered the information of user side equipment.
4. dispatching patcher according to claim 3 is characterized in that: said detection and control appliance also comprise: the ammeter that detects said power consumer apparatus power consumption; Control the remote control switch (117) of the refrigerating capacity of said refrigerating plant; Be used to detect the consumption gauge table (111) of the data that said fan coil (110) cold water consumes; The flowing water valve remote control switch (116) of control fan coil (110); The control actuating unit (118) of water resource heat pump.
5. a kind of dispatching patcher according to claim 4 is characterized in that, said integrated dispatch control device (115) comprising:
The non-refrigeration power consumption of reception user data, user's cold water consumption data, user pipe range information, water resource heat pump cold water go out the first data receiving element (201) of the generated output electric weight of strength, fired power generating unit;
The data decoder unit (202) that all data that receive are decoded;
The data memory unit (203) that decoded all data are stored;
Generate the scheduling control signal computing unit (204) of scheduling control signal;
Said scheduling control signal is carried out encoded signals encoder (205); And
Scheduling control signal behind the coding is passed to the transmitting element (206) of the first remote centralized controller (1121), the second remote centralized controller (1122).
6. require each described dispatching patcher according to aforesaid right; It is characterized in that; Said control actuating unit (118) comprises scheduling control signal transmitting-receiving coded stack (302), drive circuit (303) and control device (304); Said scheduling control signal generates the instruction of water resource heat pump scheduling controlling after the decoding of scheduling control signal transmitting-receiving coded stack, through the signal triggering control device of overdrive circuit output, control device is controlled the valve event of water resource heat pump again.
7. dispatching patcher according to claim 6 is characterized in that, integrated dispatch control device (115) is connected with cloud computing calculation services system (917) through power optical fiber (120), and the data of gathering are carried out cloud computing.
8. dispatching patcher according to claim 7; It is characterized in that; The second remote centralized controller comprises air-conditioning ammeter pulse counter, cold water flow pulse counter, the coded stack that connects successively, and interconnective control signal Rcv decoder and remote control signal generator.
9. the control method according to each described dispatching patcher of claim 1-8 is characterized in that, comprises the steps:
I. measure
(1) measure supply side: water resource heat pump constant freezes, and activity of force be rated power H
WSHPWith fired power generating unit generated output power P
CHP(t);
(2) measure user side: (i=0～N);
A) 0～N user apart from the pipeline of unit apart from S
i
With Δ T is the sampling period, collection 0～T following data in the time period:
B) the power consumption power P of 0～N the former day part of user
i(t);
C) the cold water consumed power H of 0～N the former day part of user
i(t);
D) 0～N user's installed capacity
of the air-conditioning of day part in the past
Ii calculates
(1) calculates the total power consumption of all users
(2) according to the day part total electricity consumption P that calculates in (1)
Sum(t) and fired power generating unit generated output power P
CHP(t), the electric load P of the following a period of time T～2T of prediction
Load(t), fired power generating unit generated output power P
CHP(t);
(3) user grouping: calculate the equivalent distances of each user to unit
With identical s
iThe user be divided into same group, count l group, l=s
i, add up to L group, L is a natural number, v be current at ducted flow velocity, Δ T is to be the above-mentioned sampling period unit adjusting time;
(4) the L group to getting in (3), obtain respectively:
H
Load(l)=∑ H
i(t, l); H
i(t is that l group user i is in t cold water consumed power constantly l);
Iii. control is calculated
(1) object function
Equivalent load after the wherein flat standardization defines as follows:
p
load(t)＝P
load(t)-(p
CHP(t)-P
CHP)+p
EHPs(t) (2)
Wherein, p
Load(t) be equivalent power load power after regulating, p
CHP(t) be generated output after regulating, p
EHPsAll user's power consumptions when (t) being t; Equivalence electric load mean value defines as follows:
(2) constraint equation
A) refrigeration duty equilibrium equation
It is the core of method that the air conditioning electricity refrigeration replaces water resource heat pump cold feed deficiency, the not enough power if Δ h (t) the expression t period freezes, and then, its expression formula is:
Δh(t)＝|H
WSHP-h
WSHP(t)| (4)
Wherein, h
WSHP(t) be that regulate the back water resource heat pump cold goes out activity of force;
T period current undersupply will be compensated through electricity consumption in t～t+L period respectively by the air-conditioning of 0～L user group, and concrete formula is:
h
EHP(t+l l) is the t+l refrigeration work consumption sum of l group user air-conditioning constantly; h
EHP(t l) is the t refrigeration work consumption sum of l group user air-conditioning constantly;
If h in the formula
EHP(t l) can get 0, and on the one hand, some period, not all user's group was all participated in compensation; On the other hand, if surpassed the total activation time of regulation, the current undersupply does not have influence on the user's group that is in far-end yet, and these user's groups also will not participated in compensation so;
B) water resource heat pump:
The cold restriction of exerting oneself:
0≤h
WSHP(t)≤H
WSHP (6)
Water resource heat pump is thermoelectric than constraint:
h
WSHP(t)＝COP
WSHP·p
WSHP(t) (7)
Wherein, H
WSHPBe the water resource heat pump rated capacity; COP
WSHPBe the water resource heat pump coefficient of performance; h
WSHP(t) exert oneself for the cold of water resource heat pump t period; p
WSHP(t) be the power consumption of water resource heat pump t period;
C) user side air-conditioning constraint
Thermoelectric than constraint:
h
EHP(t，l)＝COP·p
EHP(t，l) (8)
The air-conditioning upper limit of exerting oneself:
0≤p
EHP(t，l)≤min(P
EHP(l)，?H
load(l)/COP)?(9)
Wherein, COP distributing air-conditioning thermoelectricity compares coefficient;
Last air-conditioning power consumption refrigeration both can compensate the deficiency of cold water refrigeration, and therefore the load of the low-valley interval that also can increase electric power, need obtain the refrigeration power consumption sum of all user's groups of day part:
P wherein
EHP(t, the power consumption of l group user air-conditioning when l) being t;
With the H that measures in the step I
WSHPWith the P that predicts among the step I i
CHP(t), calculate variable P among the step I i
Load(t), H
Load(l), P
EHP(l) in substitution formula (1)～(10) and unite and find the solution, when object function Δ p is minimum of a value, tries to achieve and optimize back gained performance variable: the generated output p of fired power generating unit
CHP(t), the cold h that exerts oneself of water resource heat pump
WSHP(t), the different air-conditioning power consumption constantly of user p
EHP(t is l) with refrigerating capacity h
EHP(t, l);
Iv. send control signals to supply and user and carry out action
According to gained performance variable after the optimization of iii, variable signal is sent to supply side and user, carry out specifically action, as follows:
Generated output p according to fired power generating unit
CHP(t), the cold h that exerts oneself of water resource heat pump
WSHP(t), control fired power generating unit, water resource heat pump regulated the action of day part in the time in future;
According to the different air-conditioning power consumption constantly of user p
EHP(t is l) with refrigerating capacity h
EHP(t, l), control user side different distance user uses the air conditioner refrigerating amount, and closes the fan coil amount.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104006488A (en) * | 2014-04-28 | 2014-08-27 | 国家电网公司 | Air conditioner control system and method for controlling running of air conditioner thereof |
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| CN104777855A (en) * | 2015-03-23 | 2015-07-15 | 上海理工大学 | On-line detection system of water chilling unit and control method thereof |
| CN106196234A (en) * | 2016-07-29 | 2016-12-07 | 西安建筑科技大学 | Optimizing operation method worked in coordination with by a kind of reclaimed water resource heat pump heating system |
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