JPH05256482A - Operation controller for heat source apparatus - Google Patents

Abstract

PURPOSE:To stably supply heat by predicting a flow rate of supplying thermal load, deciding a heat accumulation plan and an operation schedule of a heat source apparatus, and correcting the schedule as required. CONSTITUTION:Operating indexes of heat reservoirs 4, 5 are decided based on a predicted value of a flow rate of supplying thermal load 9 by considering volumes of the reservoirs 4, 5, effective use of night power, a peak load operation, an efficient operation in which manufactured heat that day is completely wasted in that day and management of chilled/warm water. Further, an operating plan of heat source apparatuses 1, 2 of a time (e.g. 24 hours) for realizing an efficient operation is formed based on the indexes and rated capacities of the apparatuses 1, 2. The indexes of the reservoirs 4, 5 and the plan of the apparatuses 1, 2 are monitored, executed to monitor a deviation of the plan from an actual fact, and the indexes of the reservoirs 4, 5 and the plan of the apparatuses 1, 2 are corrected as required. Thus, heat can be stably supplied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat source device operation control device used for heating and cooling and other heat producing facilities, and particularly to heat source device operation for realizing high efficiency of heat storage tank and heat source device and stable supply of heat. Regarding the control device.

[0002]

2. Description of the Related Art Conventionally, in heating and cooling facilities such as high-rise buildings, houses, and public facilities, a heat storage tank is installed to produce heat quantity such as cold water, hot water or steam by a heat source device at a time when heat consumption is low such as at night. The heat is stored in the heat load device, and the stored heat amount is directed to part or all of the heat load consumed by the heat load device in the daytime.

Therefore, by producing and utilizing such heat quantity, not only the heat source load of the heat source equipment in the daytime can be reduced, but also the equipment capacity of the heat source equipment can be reduced.
As a result, it contributes to improvement of operation efficiency and load factor of the heat source device. Further, when air conditioning is performed using electric power, it is possible to effectively use inexpensive nighttime electric power under an industrial adjustment contract with an electric power company to produce heat quantity, which greatly contributes to a reduction in running cost.

By the way, normally, in this type of cooling and heating facility, a plurality of heat source devices are installed and a heat storage tank for cold / hot water is used. Then, cold water / hot water is produced by a heat source device such as a heat pump, stored in a heat storage tank, and supplied to a heat load device such as a heating / cooling device as necessary, depending on the amount of heat stored in the heat storage tank at this time. It is necessary to control the number of operating heat source devices. So, conventionally,
Regarding the control of the number of operating heat source devices, as described below,
Street control methods are being considered.

One of them is a method of detecting the actual heat storage amount of the heat storage tank, comparing the detected heat storage amount with a preset heat storage target, and increasing / decreasing the number of heat source devices according to the deviation. is there.

The other is to predict the amount of heat consumed by the heat load device in advance, and determine the number of heat source devices from the difference between the heat storage target and the actual amount of heat storage at a predetermined time based on this predicted value. This is a method of increasing / decreasing control.

[0007]

However, in the two operation control methods as described above, not only the worker needs to reset the heat storage target according to the change of the heat load during the season or on the weekdays, but also When using a heat source device that manufactures cold and hot water at the same time, it is necessary to set a heat storage target that satisfies both cold and hot water at the same time, so the setting work is extremely complicated.

Further, since the heat storage amount, the heat load supply amount, the heat production amount, and the like are all handled by the heat amount, when the heat consumption of the heat load device is incomplete, the temperature of the water returned from the heat load device. When, for example, 12 ° C is supposed to be lowered to 10 ° C, not only water cannot be fed but also the heat source device cannot be used to reduce the temperature to a predetermined temperature again. This is extremely difficult to control the amount of heat of water, and cannot be said to be realistic or practical control.

Further, the change of the heat load device is largely due to the change of the heat flow rate, and the original heat quantity is given by the product of the temperature and the flow rate, but in reality, it is managed only by the temperature. , Efficient operation of heat source equipment is impossible.

The present invention has been made in view of the above circumstances, and realizes efficient operation of a heat source device and determines a heat storage plan and an operation schedule of the heat source device by highly accurate prediction of a heat load supply flow rate, It is an object of the present invention to provide a heat source device operation control device capable of stably supplying heat by appropriately modifying an operation schedule and the like as necessary.

[0011]

In order to solve the above-mentioned problems, the heat source device operation control device according to the present invention is consumed in a predetermined period by using past flow rate records according to the day of the week mode, the season and the time zone. Based on the heat load supply flow rate prediction value predicted by this supply flow rate prediction means, the heat storage target up to the predetermined period, the heat source device utilization priority and the cold temperature. Heat storage plan processing means for determining an operation index such as water management, and heat source operation for determining an operation schedule of the heat source device for the predetermined period based on the operation index determined by the heat storage plan processing means and the supply flow rate predicted value. The plan processing means, the operation index of the heat storage tank by the heat storage planning processing means, and the monitoring of the operation schedule by the heat source operation planning processing means and the actual operation state Monitoring means for monitoring, operation plan correction processing means for correcting or re-planning the operation index and the operation schedule based on the monitoring result by this monitoring means, and operation / stop of heat source equipment according to the operation schedule. And a means for executing.

[0012]

Therefore, according to the present invention, by taking the above-mentioned means, the past flow rate results according to the day of the week mode, the season, and the time zone are used to consume within the predetermined period N (N = for example, the last 24 hours). The expected heat load supply flow rate is predicted, and based on this heat load supply flow rate predicted value, the capacity of the heat storage tank, effective use of nighttime power, peak cut operation, efficient operation that uses up the heat produced on that day, and management of hot and cold water The destination N that decides the operation index of the heat storage tank while considering the above, and realizes efficient operation based on the operation index of the heat storage tank and the rated capacity of the heat source device.
Develop a heat source equipment operation plan for hours.

Then, the operation index of the heat storage tank and the operation plan of the heat source device are monitored, and the actual deviation from the plan is monitored by actually executing the operation index of the heat storage tank and the heat source device. Since the operation plan is corrected, it is possible to efficiently operate the heat source device and stably supply heat.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a heat source equipment operation control apparatus according to the present invention. This embodiment comprises a heat storage plant 1 installed in the basement of a high-rise building and a heat source device control device 20 for executing an operation / stop command of a heat source device forming a part of the heat storage plant 1. ..

The heat storage plant 1 includes various heat pumps 2 and 3 which are heat source devices for producing heat, a cold water tank 4 and a hot water tank 5 which store the heat produced by the heat pumps 2 and 3, and these A heat load device 9 is provided which receives the heat stored in the hot water tanks 4 and 5 by the water pump 6 through the cold water header 7 and the hot water header 8 and consumes it in the form of air conditioning, cooling, hot water supply and the like. Here, the heat pump 2 for cold water can convert water at around 10 ° C into water at around 5 ° C. On the other hand, the heat recovery type heat pump 3 is 5 °
Cold water of about C and hot water of about 45 ° C. can be produced at the same time, and the heat output at this time can be used for both, so the heat production efficiency is very good.

Further, in the heat storage plant 1, thermometers 10a, ..., Cold water tanks 4 for measuring temperatures on the inlet side and the outlet side of the heat pump 2 for cold water and the heat recovery type heat pump 3 are provided.
A thermometer 10b for measuring the temperature distribution of the warm water tank 5, ..., A thermometer 10c for measuring the back-and-forth water temperature of each heat supply system are provided, and water supply for measuring the water supply flow rate to the heat pumps 2,3. A flow meter 11 is provided. The temperature and water flow rate measured by the thermometers 10a, 10b, 10c and the water flow meter 11, that is, the process measurement value 12
Is sent to the arithmetic and control unit 22 via the input unit 21 of the heat source device control unit 20.

The heat source device control device 20 includes an input device 2
1. In addition to the arithmetic and control unit 22, an input / output device 23 for inputting weather information and outputting required information, information from the input / output device 23 and a preset day mode,
A man-machine input device 24 that sends information such as a time zone to the arithmetic and control unit 22 and a heat source device operation / stop command 25 obtained by the arithmetic operation of the arithmetic and control unit 22 via the output unit 26 by the heat source controller 27 or the like. Composed,
The heat source controller 27 executes additional operation / stop control of the heat source device. Next, in the apparatus configured as described above, the operation of the arithmetic and control unit 22 will be described in particular. The heat source device control device 20 roughly divides and performs the following five processes. (1) Supply heat quantity prediction processing (2) Heat storage planning processing (3) Heat source equipment operation planning processing (4) Process monitoring / operation planning monitoring processing (5) Heat source equipment operation planning correction processing

Of these processes, (1) supply heat amount prediction process, (2) heat storage planning process, and (3) heat source equipment operation planning process are performed as a regular planning process before the start of each time zone. .. The time zone referred to here is, for example, * time zone 1 (22:00 to 8:00) * time zone 2 (8:00 to 13:00) ... summer (8:00 to 16:00) ... … Winter (8:00 to 22:00) …… Other seasons * Time zone 3 (13:00 to 16:00) …… Summer (16:00 to 18:00) …… Winter * Time zone 4 ( 16:00 to 22:00) …… Summer (18:00 to 22:00) …… It means winter.

On the other hand, (4) process monitoring / operation plan monitoring processing is executed at a certain monitoring cycle (for example, 15 minutes or 30 minutes) in each time zone, and the operation plan needs to be changed. In this case, (5) heat source equipment operation plan correction processing or re-planning processing for repeatedly executing the processing of (2) and (3) is performed. The flow of these series of processes is as shown in FIG. 2, and each process will be described in detail below.

First, after setting the mode of the day of the week, the season and the weather forecast information, that is, the processing parameters in the input / output device 23 and the man-machine input device 24 (S1), it is determined whether the scheduled planning process before each time zone is performed. Determine (S2),
If it is the regular schedule processing, the following supply heat amount prediction processing is executed (S3). (1) Supply Heat Quantity Prediction Process (S3) This supply heat quantity prediction process is divided into (a) time zone-specific supply flow rate prediction processing and (b) time-specific supply flow rate prediction processing. (A) Supply flow rate prediction process for each time period

This process is executed before the start of each time period, but before that, the past hourly one day's worth and the actual supply flow rate for each time period have been saved for each day of the week. For example, the day mode is set as * holiday (M = 1) * weekday (M = 2) * unique day (M = 3), and the time zone is set as follows. * Time zone 1 (T = 1) (22: 00-8: 00)
(Night) * Time zone 2 (T = 2) (8:00 to 13:00)
...... Summer (8:00 to 16:00) ...... Winter (8:00 to 22:00) …… Other seasons * Time zone 3 (T = 3) (13:00 to 16:00)
...... Summer (16:00 to 18:00) ...... Winter * Time zone 4 (T = 4) (16:00 to 22:00)
...... Summer (18:00 to 22:00) ...... Winter

Therefore, in this heat supply amount predicting process, if the day-of-the-week mode and the seasonal data of the day are set from the man-machine input device 24, not only the past heat load average flow rate pattern Y _MT can be easily obtained, but also continued. , two days before, one day before the actual flow rate _{Y MT (k-1),} Y MT (k-2) is obtained, using the following model can predict the day of thermal load flow prediction Y _MT (k) .. For the sake of convenience of explanation, in the case of the average flow rate, the word "average" is added before Y _MT for description. Y _MT (k) = a1 · {Y _MT (k-1) −average Y _MT } + a2 · {Y _MT (k-2) −average Y _MT } + ………… + b · ΔW + average Y _MT …… ( 1) However, in the above formula, Y _MT (k): Flow rate prediction [Gcal] of the time zone T of the day [Gcal] Average Y _MT : Heat load average flow rate [Gcal] ΔW: Predicted temperature value-Average temperature [° C] a1, a2, ..., b: Parameter

It is These a1, a2, ..., B are parameters of the model, and can be given in advance, or it is also possible to perform successive least squares estimation (Kalman filter) in real time.

As described above, the predicted flow rate value Y _MT (k) [Gca] for each time zone (T = 1, 2, ..., 4) of the day is as described above.
l], the hourly average flow rate y of the day M
Proportional division from _MT (i) (i = 1, ...... 24) for each day gives
Predicted value y _MT (k, i) (i = 1,…
24) You can get [Gcal]. (B) Hourly supply flow rate prediction processing This prediction processing is performed during the daytime, for example, (8:00 to 22:00).
It is executed every process cycle before process monitoring / plan execution.

Now, the time before the previous time, the actual flow rate at the previous time y _MT (k, i
-1) and y _MT (k, i-2) are obtained, the predicted heat load flow rate y _MT (k, i) at the next time is predicted using the following model. y _MT (k, i) = a1 · {y _MT (k, i-1) −average Y _MT (i-1)} + a2 · {Y _MT (k, i-2) −average Y _MT (i-2) )} ＋ ………… ＋ b ・ △ h (k-1) ＋ average Y _MT (i) …… (2) where y _MT (k, i): Predicted flow rate at time i in time zone T of the day. [Gcal / s hour] Δh (i): Enthalpy at time i-Average enthalpy [kcal / kg] Y _MT (i): Average flow rate at time i a1, a2, ..., b: Parameter

[0027] In addition, k represents a day and i represents a time. Further, a1, a2, ..., B are parameters of the model, which can be given in advance, or can be subjected to successive least squares estimation (Kalman filter) in real time. (2) About heat storage planning process (S4)

Next, a heat storage planning process for planning the operation of the heat storage tank is performed based on the predicted value of heat supply, the heat source equipment and the facility capacity of the heat storage tank (cold water tank 4, hot water tank 5) (S4). First, in the heat storage planning process, operation indexes such as a heat storage target, a heat source device utilization priority, and cold / hot water management are determined for each of the following time zones.

These operation indexes are determined according to the following policies from the viewpoint of stable heat supply and efficient operation. In other words, the operation indicators are to increase the utilization rate of nighttime electric power from the viewpoint of electric power cost, to use up the heat produced on the day to reduce heat loss, to reduce the amount of electric power by a scheduled adjustment contract, and to level the electric power demand. In order to achieve peak power cuts, to manage the stable supply of heat, control hot and cold water,
That is, in the simultaneous production of cold / hot water, the cold water and hot water production amounts are determined as follows in accordance with the policy of safely storing according to the heat storage amount. (A) Heat storage target

The amount of heat storage θ handled by this heat storage target is obtained from the temperature profile of the heat storage tank. In the case of cold water heat storage, the temperature of section i is θ _i [° C] and the heat load from the heat storage tank is as shown in FIG. Water supply specified temperature θ _so [° C] to the device 9 and volume V _i [m ^{3 of the} section i ] And the heat storage efficiency η,

[0031]

[Equation 1]

It is obtained from the arithmetic expression of Here, the above (3)
The first term of the formula means the amount of water in the part where the temperature of the heat storage tank is equal to or lower than the specified water supply temperature, and the second term means the amount of water up to the specified water supply temperature in the part where the temperature of the heat storage tank exceeds the specified water supply temperature. ..
In the case of hot water heat storage, the amount of heat transferable water that can be sent can be obtained by considering the opposite form to the above.

The heat storage target is an index showing how much heat of the heat transferable water storage is stored at a certain predetermined time, and is determined according to the following a to d. Here, the predetermined time is the time zone end time described above.

A. Time zone 1 for effective use of nighttime electricity
The heat storage amount at the end time (8 o'clock) is set to the larger one of the maximum heat storage facility capacity for both cold and hot water and the integrated value of the predicted heat supply amount after the end time of time zone 1. B. To use up the heat produced on that day, 1
The heat storage amount at the end time of 22:00 (the end time of time zone 2 or time zone 4) is set to the minimum.

C. In summer and winter with peak cut operation, the heat storage amount at the end time of time zone 2 (13:00 or 16:00) is either the maximum of the facility capacity or the integrated value of the predicted supply flow rate after the end time of time zone 2 The larger one.

D. In summer and winter when the peak cut operation is performed, the heat storage amount at the end time (16:00 or 18:00) of the time zone 3 is minimized. Here, the minimum heat storage amount is an amount that can cover the starting loss when one heat source device is operated.
Since the starting loss of the heat source device is generally about 0.5 hours, it is represented by the minimum heat storage amount = 0.5 hours of the supplied heat amount + 0.5 hours of the manufacturing capacity of the heat source device. (B) Utilization Priority of Heat Source Equipment This priority means an order determined on the premise of a heat source equipment capable of obtaining a desired amount of heat. For example, first priority: heat recovery heat source device 3 capable of double-counting cold / hot water production Second priority: air-cooled heat pump 2 However, when making cold water, the heat pump is given first priority. (C) Cold / hot water management An indicator of which of the cold / hot water is preferentially used for heat production is determined based on the supply flow ratio of the cold / hot water. In other words, future cold water load / future hot water load> cold water led threshold if cold water led future hot water load / future cold water load> hot water led threshold warm water led if other than the above two cases

Here, the cold-warm water equilibrium means that hot water stores heat between maximum heat storage amounts, but cold water does not store heat up to the maximum heat storage amount. This is an index for operating the heat recovery heat source device 3 efficiently. In addition, the chilled water initiative mainly determines the chilled water operation schedule and then the hot water operation schedule. Contrary to cold water initiative, hot water is mainly decided, and then cold water is decided. (3) About operation plan processing (S5) of heat source equipment. In this process, an operation plan of the heat source device, that is, a control schedule is created based on the operation index created in the supplied heat quantity prediction value process and the heat storage plan process (S5).

First, every hour, N hours later (for example, N = 2)
This is to create an operation plan of the heat source equipment every hour according to the operation index from the predicted heat storage amount at the planning target time predicted based on the supply flow rate predicted value and the measured value of 4). It consists of (a) occurrence of a heat source equipment operation combination, (b) judgment of heat source equipment operation restriction, and (c) evaluation of heat source equipment operation schedule.

That is, in this operation planning process, an operation combination of heat source devices is generated, an operation schedule is determined by an operation combination satisfying the constraint, and a plurality of operation schedules having different operation combination initial values are sequentially evaluated. , Confirm the operation schedule. (A) Occurrence of operating combinations of heat source equipment

First, the operating combination of the heat source equipment is determined from the use priority of the heat source equipment. The operation combination when there is a heat recovery type heat source device and a heat pump dedicated to cold water is as shown in FIG. The operation schedule is determined by selecting an operation combination satisfying the constraint among the above-mentioned operation combinations until the final time of the hourly time zone.

The method for selecting this operation combination is as shown in FIG. That is, to set the time zone initial operation state, create an operation plan for the current time zone with the operation combination at the last time of the previous time zone as the initial value, or use an operation combination other than the above as the initial value for the current time. An operation plan for the belt is created (S21 to S23), the following trial calculation is performed based on the initial operation combination, and the operation schedule plan for the current time zone is trial calculated (S24). I. Continue the driving combination from the previous time.

B. If the constraint is not satisfied when the operation combination at the previous time is continued, another combination (without stopping) is used for trial calculation, and the result of the trial calculation satisfies the constraint, and the combination that does not change the most in the operating state is the current time. The driving combination of

C. When all the other combinations do not satisfy the constraint, the combination of all units stopped is selected and the constraint is determined. When the constraint is not satisfied, it is determined that this operation combination cannot be realized. D. If there is an operation combination that satisfies the constraint, the time is advanced by 1 hour and the operation is executed until the time zone end time (S27 to S30). (B) Constraint determination of driving combination (S25) The constraint conditions for determining whether the driving combination can be executed are as follows.

A. On / off hunting impossibility judgment ... When on / off hunting occurs in the operation plan. For example, it is the case where the time before last is on, the time before is off and the current time is on, and conversely, the time before two is off, the time before is on and the current time is off. B. Judgment of the number of start and stop times ... When the number of operation stoppages of the heat source device per day exceeds the set value (for example, 5 times).

C. Judgment of heat storage amount ... Maximum heat storage amount judgment and minimum heat storage judgment. The maximum heat storage amount judgment is a case where it is determined that the heat storage amount exceeds the maximum heat storage amount in the estimated heat storage amount transition,
The minimum heat storage determination is a case where it is determined that the heat storage amount is less than the minimum heat storage amount in the estimated heat storage amount transition. D. Residual heat production judgment: It is when it is judged that the heat storage target cannot be achieved by the current heat production. E. Power consumption judgment: When the power consumption exceeds the contract power consumption. (C) Evaluation of operation schedule

The evaluation value of the calculated operation schedule is calculated, and the operation schedule having the smallest evaluation value is determined from among the plurality of operation schedules (S26). Consider the following five evaluation values. I. On-off evaluation value The on-off evaluation value means the number of operation stoppages. The calculation method is

[0047]

[Equation 2] Ask from. Where is: time zone start time, ie: time zone end time, x (t): time t,
x (t) = 1: ON, x (t) = 0: OFF, EXOR:
Exclusive OR, a: weighting coefficient, a = 10: regular adjustment contract time zone, a = 1: other than regular adjustment contract time zone. B. Minimum heat storage retention The minimum heat storage retention is the number of times that the minimum heat storage is exceeded.
The calculation method is

[0048]

[Equation 3] Ask by. Here, b: a value for determining whether or not it is below the minimum heat storage amount b = 1: r (t) <r _min b = 0: r (t) ≧ r _min r (t): expected heat storage amount at time t r _min : minimum heat storage amount c. Thermal storage target retention The thermal storage target retention is the difference between the expected thermal storage amount at the end of the time zone and the thermal storage target, and is calculated from | r _ref −r (ie) | (7). Where r _ref : heat storage target, r (i
e): The expected heat storage target at the final time of the time zone. D. Simultaneous cold / hot start degree The cold / simultaneous start degree is the number of times the cold / hot water of the heat recovery machine is not started simultaneously.

[0049]

[Equation 4] Here, c: a value for determining whether hot water is simultaneously started, c = 1: hot water is not simultaneously started, c = 0:
Hot water is started at the same time. E. Effective utilization rate of heat recovery machine The effective utilization rate of the heat recovery machine is the degree to which the heat recovery machine is not effectively used. The calculation method is

[0050]

[Equation 5] Consists of. Here, d: a value for determining whether or not the heat recovery is effectively used, d = 0.25: xh (t) = 1 and the heat recovery device is on, d = 0.75: xh (t) = 1 and hot water only is on

Xh (t): a determination value of whether hot water is produced at time t, xh (t) = 1: hot water production is present, and xh (t) = 0: hot water production is not produced. .. In this evaluation method, the evaluation values of (a) to (e) are prioritized and determined. The order of this determination is the following priority according to the following rules. a When the evaluation value is improved, the operation schedule is updated. b If the evaluation values are the same, the next evaluation value is determined. c If the evaluation value does not improve, do not update the operation schedule. 1st priority: Select the operation combination with the smallest number of on / off times. 2nd priority: Select the operation combination with the minimum heat storage target retention rate. 3rd priority: Select the operation combination with the lowest cold / heat simultaneous start rate. 4th priority: Select the operation combination with the lowest heat recovery effective utilization rate Fifth priority: Select the operation combination with the lowest minimum heat storage rate The operation schedule of the heat source equipment can be determined by performing these processes. (4) Process monitoring / plan monitoring processing

Since it is desirable to continuously perform the process monitoring / plan monitoring process, the process monitoring is performed in a cycle of n minutes (S
6). As a result, the arithmetic and control unit 22 outputs an operation stop command of the heat source device to the heat source controller 27 via the output device 26. I. Operation plan monitoring

The operation plan is monitored as follows, and if it is necessary to re-plan, the heat storage plan process and the heat source device operation plan process are executed (S7). When the plan can be finely adjusted, a plan correction process is executed as described later. The monitoring items of the operation plan are as follows. In other words, * Whether or not the heat storage target, which is an operation index, is maintained * Whether or not there is a stoppage of heat source equipment other than the operation schedule * Whether or not there is a deviation from the supply flow rate forecast that exceeds a specified limit (for example, 15%) Is monitored, and if it is determined that the operation plan needs to be changed based on the monitoring result, the planning process or the plan correcting process is executed. B. Operating status monitoring

Since the process state changes from moment to moment,
Observe this change. That is, it is monitored whether or not stable heat supply and stable operation (stable operation of equipment) are being performed (S8). The items to be monitored are as follows. In other words, * whether the supply temperature holds the specified temperature * whether it holds the minimum heat storage amount * whether it holds the maximum heat storage amount * whether the inlet temperature of the heat source equipment is normal As a result of the monitoring, if necessary, the heat source equipment that does not follow the operation schedule is forcibly started and stopped. (5) Heat source equipment operation plan correction processing

After the above-mentioned monitoring, it is judged whether or not there is a need to change the plan, and if this change can be corrected, the operation plan is corrected (S9 to S11). This operation plan correction processing judges whether or not a plan change is necessary after the above-mentioned monitoring, and this change is made by extending / shortening / prolonging / advancing / moving the current operation schedule. Fix the defect of. Here, extension means to extend the scheduled stop time of the heat source device to the rear, shortening means to advance the scheduled stop time of the heat source device, procrastination means to extend the scheduled start time of the heat source device to later, and advancement means the heat source. To move the scheduled start time of the equipment earlier, and to move means to change the scheduled start time and scheduled stop time of the heat source equipment. However, when it is necessary to start a heat source device that is not scheduled to be operated according to the current operation schedule, the operation planning process (3) is executed to perform re-planning (S12).

Therefore, according to the configuration of the above embodiment, it is premised that the flow rate information is handled, and the past actual flow rate according to the time zone, the day of the week mode and the seasonal mode is used for a predetermined period. Since the heat load supply flow rate to be consumed is predicted, the heat load supply flow rate can be predicted appropriately.
Moreover, based on the predicted value of the heat load supply flow rate, based on the heat storage plan such as the capacity of the heat storage tank, effective use of nighttime electric power, the heat cut operation, the efficient operation of completely using the heat produced on that day, and the management of cold / hot water. Since it stores heat,
In consideration of the heat storage tank capacity, anticipate daytime heat load and effectively use nighttime electric power to enable planned heat storage, thereby leveling daytime electric power demand and realizing efficient operation. You can control the planned operation of.

Further, since the planned control is premised, even if an error occurs in the load prediction, it is possible to realize the stable supply of heat while making appropriate corrections. In addition, if it is determined from the results of the process monitoring process that it is necessary, the heat source equipment is forcibly started / stopped.Therefore, an emergency control that responds to the momentary changes in the process is provided. With this, it is possible to realize an even more stable supply of heat.

The present invention is not limited to the above embodiment. That is, although the above embodiment is an example of controlling one plant, it is needless to say that a plurality of plants can be simultaneously controlled by the same means. In addition, although this embodiment has been described with respect to the heat recovery heat source device and the cold water dedicated heat pump, the present invention can be similarly carried out when there is no heat recovery heat source device or when there is a hot water dedicated heat pump. Besides, the present invention can be variously modified and implemented without departing from the scope of the invention.

[0059]

As described above, according to the present invention, it is possible to economically operate by effectively utilizing nighttime electric power, it is possible to equalize the demand for daytime electric power, and to avoid unnecessary operation and loss. Efficient operation can be systematically controlled by avoiding a lot of operations, heat of specified temperature can be constantly supplied to consumers, and systematic control can be performed regardless of the day of the week or time of year throughout the year. Have the effect of. Furthermore, since the flow rate, which is the most important factor for fluctuations in heat load, can be controlled, efficient operation and stable heat supply can be reliably achieved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a heat source device operation control device according to the present invention.

FIG. 2 is an operation flow chart for explaining a series of processes of the device of the present invention.

FIG. 3 is an explanatory diagram for obtaining a heat storage amount in the case of cold water heat storage.

FIG. 4 is a diagram showing an example of an operation combination of heat source devices.

FIG. 5 is a flowchart illustrating a heat source device operation plan process.

[Explanation of symbols]

1 ... Heat storage plant, 2, 3 ... Heat pump (heat source equipment), 4,5 ... Heat storage tank, 9 ... Heat load, 10a, 10b,
10c ... Thermometer, 11 ... Water flow meter, 20 ... Heat source equipment control device, 21 ... Input device, 22 ... Arithmetic control device, 24 ...
Man-machine input device, 27 ... Heat source controller.

Claims (1)

[Claims] 1. A heat source device operation control device for producing a heat quantity consumed by a heat load device by using a plurality of heat source devices and storing the heat in a heat storage tank, the past flow rate performance according to a day of the week mode, a season and a time zone. Based on the heat load supply flow rate predicted value predicted by the supply flow rate predicting means, and the heat storage target up to the predetermined period ,
Heat storage plan processing means for determining operation priorities of heat source equipment such as utilization priority and cold / hot water management, and heat source equipment for the predetermined period based on the operation index and the supply flow rate predicted value determined by the heat storage plan processing means. A heat source operation plan processing means for determining the operation schedule of the heat storage tank, an operation index of the heat storage tank by the heat storage plan processing means, and a monitoring means for monitoring the operation schedule by the heat source operation plan processing means and the actual operation state, and this monitoring A heat source device operation control device comprising: an operation plan correction processing unit that corrects or re-plans the operation index and the operation schedule based on a monitoring result by the unit.