JP4090189B2 - Generator control method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for controlling a generator in a power retail business, and more specifically, controls a plurality of generators owned by a power generator in order for the power retailer to supply power to a power consumer. Regarding the method.
[0002]
[Prior art]
Conventionally, since the implementation of the power retail business has been regulated by laws and regulations, there is no conventional example of a generator control method in the power retail business. A power retailer that conducts a power retail business enters into a contract for power supply and demand with a plurality of power consumers and a plurality of power generation businesses. The electric power retailer aggregates the electric power demands of the electric power consumers, and creates an operation plan for the generator owned by the electric power generator so as to satisfy the aggregated demand. The electric power retailer controls each generator according to the created operation plan, thereby supplying necessary electric power to each electric power consumer.
[0003]
The electric power demand in the electric power consumer fluctuates depending on the time of day. However, in many cases, the fluctuation pattern for one day of the power demand almost coincides with the fluctuation pattern of any past day. For this reason, when a generator operation plan is created in accordance with the power demand, the generator operation plan substantially matches the operation plan of any day in the past. In addition, due to factors such as the day of the week, the fluctuation pattern for one day of power demand may differ greatly from the fluctuation pattern of the previous day. From this point of view, the power retailer is required to perform a process (hereinafter referred to as supply and demand adjustment) of generating a generator operation plan by collecting the power demand at least once a day.
[0004]
[Problems to be solved by the invention]
However, since the actual power consumption (hereinafter referred to as “received power”) at the power consumer fluctuates in real time, the supply / demand adjustment once a day makes the difference between the received power at the power consumer and the generated power at the power generation company. There will be a difference between them. If the amount of power received is greater than the amount of power generated, the insufficient power is supplied from the existing power company, and the power retailer pays the power company as a penalty. Conversely, if the amount of power generation is greater than the amount of power received, excess power is supplied to the existing power company, but the power retailer can only receive a very cheap fee for the supplied power.
[0005]
In addition, a generator owned by a power generation company has various characteristics such as maximum power generation amount, power generation cost, and power generation amount control method. In addition, a contract between the electric power retailer and the power generation company may impose certain restrictions on the control mode of the generator by the electric power retailer.
[0006]
Therefore, the present invention provides a method for controlling a generator that can control a generator having various characteristics owned by a power generation company and supply power that follows the amount of power received that varies in real time. For the purpose.
[0007]
[Means for Solving the Problems and Effects of the Invention]
  A first invention is a generator control method for controlling a plurality of generators owned by a power generation company in order for an electric power retailer to supply electric power to an electric power consumer,
  A demand plan acquisition step for acquiring a demand plan from an electric power consumer;
  An operation plan creation step for creating a generator operation plan based on the demand plan,
  An operation plan transmission step for transmitting an operation plan of the generator to each generator,
  A received power amount receiving step for receiving a received power amount in real time in a power consumer;
  A power generation reception step of receiving real-time power generation by a power generation company;
  An operation plan correction step for correcting the operation plan of the generator so that the received amount of received power and the amount of generated power match,
  A real-time control step for sending to each generator a modified operation plan of the generator;,
  An abnormality processing step for correcting the operation plan of the generator to reflect the operation status of the abnormal generator when an abnormality occurs in the generator;including.
[0008]
  According to the first invention as described above, the operation plan of the generator is corrected in real time so that the amount of power received by the electric power consumer and the amount of power generation by the power generation company coincide with each other. Power is generated according to the operation plan. Thereby, the electric power retailer can generate the electric power which follows the amount of electric power received which fluctuates in real time, and can supply it to an electric power consumer.Further, according to the first invention, when an abnormality occurs in the generator, the operation plan is corrected, and the generator generates power according to the corrected operation plan. Thereby, the power retailer can correctly control the subsequent power generation amount even when an abnormality occurs in the generator.
[0009]
In a second aspect based on the first aspect, the operation plan creating step creates a generator operation plan at the first time interval,
The operation plan correction step is characterized in that the operation plan of the generator is corrected at a second time interval shorter than the first time interval.
[0010]
According to the second aspect, the generator operation plan is created at the first time interval, and is corrected at a shorter time interval. By changing the power generation amount of the generator at such a short time interval, the power retailer can generate power that follows the power reception amount that fluctuates in real time and supply it to the power consumer.
[0011]
In a third aspect based on the first aspect, the operation plan correction step predicts a future power demand in the power consumer based on the received amount of received power, and corrects the operation plan of the generator based on the predicted power demand. It is characterized by that.
[0012]
According to the third aspect of the present invention, prior to correcting the operation plan of the generator, future power demand is predicted based on the received power reception amount. By using the prediction of future power demand, a power retailer can generate power with high follow-up by the amount of power received that varies in real time and supply it to the power consumer.
[0013]
According to a fourth aspect of the present invention, in the first aspect of the present invention, the operation plan correcting step includes a generator for pattern operation that can change the power generation amount only in accordance with a predetermined operation pattern, and a power generation amount in real time. The control generator is classified into control generators that can be controlled, and the operation plan of the adjustment generator is preferentially corrected.
[0014]
According to the fourth aspect, the generator is classified into two types, and the operation plan of the adjustment generator is corrected with priority. Thereby, the power retailer can avoid changing the operation plan of the pattern operation generator when controlling the amount of power generation in real time.
[0015]
In a fifth aspect based on the first aspect, the real-time control step calculates, for each generator, a control amount required by the generator based on an operation plan after the correction of the generator, The control amount is transmitted at a necessary timing.
[0016]
According to the fifth aspect, the control amount required by the generator is calculated, and the calculated control amount is transmitted at a timing required by the generator. Thereby, even if it is a case where the control methods of the electric power generation amount of a generator differ, a generator can be controlled uniformly. Further, since the control amount is transmitted only at a necessary timing, the communication amount between the retailer system and the power generation company system can be reduced.
[0017]
In a sixth aspect based on the fifth aspect, when the generator has a function of immediately switching the power generation amount according to the control amount, the real time control step sends the control amount to the generator every time the control amount is calculated. And transmitting.
[0018]
According to the sixth aspect of the invention, it is possible to appropriately control the power generation amount by properly supplying the control amount to the generator having the function of immediately switching the power generation amount according to the control amount.
[0019]
In a seventh aspect based on the fifth aspect, the real-time control step changes the calculated control amount when the generator has a function of holding the control amount and switching the power generation amount according to the held control amount. The control amount is sometimes transmitted to the generator.
[0020]
According to the seventh aspect of the invention, the control amount is appropriately supplied to the generator having the function of holding the control amount and switching the power generation amount according to the held control amount, and the power generation amount can be correctly controlled. it can.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing a configuration of a retailer system 10 including a generator control system 12 according to an embodiment of the present invention. The retailer system 10 illustrated in FIG. 1 cooperates with the customer system 20 and the power generation company system 30 to supply electric power required by the customer facility 21 from the generator 31. Although omitted in FIG. 1, this system includes a plurality of customer facilities and a plurality of generators. The retailer system 10 controls a plurality of generators to generate electric power required in a plurality of customer facilities.
[0024]
In a typical system, the customer system 20 is installed near the customer facility 21, for example, in the same premises. Similarly, the power generation company system 30 is installed near the generator 31. The retailer system 10 is installed at a location away from the customer system 20 and the power generation company system 30. The retailer system 10 and the customer system 20 and the retailer system 10 and the power generation company system 30 are all connected by a communication network.
[0025]
The customer facility 21 and the generator 31 are both connected to the power transmission network 1 provided by the power company. The customer facility 21 receives power from the power transmission network 1 as necessary. The generator 31 generates power according to the control from the power generation company system 30 and supplies the generated power to the power transmission network 1. The power meters 22 and 32 measure a power reception amount 42 in the customer facility 21 and a power generation amount 43 in the generator 31, respectively. In FIG. 1, the generator 31 directly supplies the generated power to the power transmission network 1. However, the generator 31 is installed in the factory, and a part of the generated power is supplied to the factory for private use. In some cases, the remaining power is supplied to the power transmission network 1. In the following description, including the above case, the amount of power generated by the generator 31 refers to the amount of power supplied to the power transmission network 1 among the power generated by the generator 31.
[0026]
The power retailer supplies all or a part of the amount of received power 42 in accordance with a contract with a power consumer. FIG. 2 is a diagram illustrating a power supply form by a power retailer. In FIG. 2, fluctuations for one day of the power reception amount 42 in the customer facility 21 and the power generation amount 43 in the generator 31 are shown. The amount of power received 42 varies in real time as shown in FIG. 2, and is generally large in the daytime period and small in other time periods. The power retailer controls the generator 31 to supply the power generation amount 43 shown by the hatched portion in FIG.
[0027]
The supply forms shown in FIGS. 2A to 2C are respectively referred to as a first partial supply, a second partial supply, and a simultaneous equal amount supply. In the first partial supply (FIG. 2A), the power retailer supplies a predetermined pattern of power out of the amount of power received 42. In the second partial supply (FIG. 2 (b)), a predetermined pattern of electric power is supplied from the electric power company, and the electric power retailer sets the electric power corresponding to the difference between the amount of power received 42 and the supply from the electric power company. Supply. In the same amount supply (FIG. 2C), the retailer system 10 supplies power equal to the amount of received power 42.
[0028]
In the case of simultaneous supply of the same amount, the retailer system 10 controls the generator 31 via the power generation company system 30 so that the power reception amount 42 and the power generation amount 43 that fluctuate in real time coincide with each other. . In this case, the electric power corresponding to the difference between the received power amount 42 and the generated power amount 43 is supplied from a power plant (not shown) owned by the power company connected to the power transmission network 1. The electric power retailer pays the electric power company as a penalty for the electric power supplied from the electric power company. Therefore, the retailer system 10 needs to control the power generator 31 so that the power reception amount 42 and the power generation amount 43 match as much as possible. This situation is the same when the power retailer performs the second partial supply.
[0029]
The generator 31 is classified into a pattern operation generator and an adjustment generator according to a contract between a power retailer and a power generator. The generator for pattern operation refers to a generator that can change the amount of power generation only in accordance with a predetermined operation pattern. The adjustment generator refers to a generator capable of controlling the amount of power generation in real time. The electric power retailer mainly assigns the generator for pattern operation to the fixed electric power demand of the electric power consumer, and assigns the generator for adjustment to the remaining electric power demand.
[0030]
FIG. 3 is a diagram illustrating an example of an operation pattern of the generator for pattern operation. The operation pattern shown in FIG. 3 specifies the power generation amount for one day of the generator. It is assumed that the power generation amount included in the operation pattern can be switched every 30 minutes. Further, the power generation amount is expressed using a ratio to the maximum power generation amount of the generator. For a pattern operation generator having a plurality of operation patterns, when one of these operation patterns is selected, the power generation amount for one day is determined. Needless to say, if an operation pattern is determined for the generator for adjustment, it can be used as a generator for pattern operation.
[0031]
In order to control the generator for pattern operation, it is necessary to supply an operation pattern from the retailer system 10. Pattern operation generators are classified into three types according to the operation pattern supply method. The type A pattern operation generator generates power according to a control value set from the outside, and holds the set control value. The retailer system 10 controls the type A pattern operation generator by supplying a control value when the control value included in the operation pattern changes. The type B generator for pattern operation generates power according to a control value set from the outside and does not hold the set control value. The retailer system 10 controls the type B pattern operation generator by supplying control values at predetermined time intervals. The type C pattern operation generator holds an operation pattern set from the outside, and generates power according to the held operation pattern. The retailer system 10 controls the type C pattern operation generator by supplying operation patterns at predetermined time intervals. In addition, the supply method of the operation pattern of the generator for adjustment is the same as the type B.
[0032]
FIG. 4 is a diagram illustrating a generator control method performed by the retailer system 10. As shown in FIG. 4, the retailer system 10 includes a power reception plan creation system 11 and a generator control system 12 and performs two types of supply and demand adjustment of plan control and real-time control at different time intervals. The retailer system 10 performs plan control only once a day, and performs real-time control every 5 minutes. FIGS. 4A and 4B show the data flow in the plan control and the real time control, respectively.
[0033]
In the plan control (FIG. 4A), the retailer system 10 creates a generator operation plan for one day in advance, and controls the generator 31 using the created operation plan. The plan control is performed every day at a certain time, for example, 23:30. The power reception plan creation system 11 receives the demand amount 40 of the next day in the customer facility 21 from the customer system 20 and creates a power reception plan 41 for the next day. The generator control system 12 creates an operation plan 44 for one day of the generator 31 based on the created power reception plan 41 and transmits it to the power generator system 30. The power generation company system 30 confirms the received operation plan 44.
[0034]
In the real time control (FIG. 4B), the retailer system 10 controls the generator 31 according to the amount of power received 42 that varies in real time. The generator control system 12 receives the received power amount 42 and the generated power amount 43 from the power meters 22 and 32, for example, every 5 minutes, and operates the generator based on the received received power amount 42 and the generated power amount 43. Modify the plan. Thereafter, the generator control system 12 converts the corrected operation plan into a control amount 45 according to the characteristics of the generator 31 and transmits the control amount 45 to the generator business system 30.
[0035]
FIG. 5 is a block diagram showing a configuration of the generator control system 12 according to the embodiment of the present invention. The generator control system 12 shown in FIG. 5 includes a demand prediction unit 50, a supply and demand adjustment unit 51, an operation plan transmission unit 52, a control amount transmission unit 53, a constraint database 60, a charge database 61, a generator database 62, and an operation pattern table. 63 and an operation plan table 64.
[0036]
The constraint condition database 60, the charge database 61, and the generator database 62 accumulate various data required when the supply and demand adjustment unit 51 creates a generator operation plan. The constraint database 60 stores constraint conditions that the generator operation plan should satisfy. The charge database 61 stores charge calculation data for evaluating a generator operation plan. The generator database 62 stores, for the generator 31, data indicating one of pattern operation / adjustment, an operation pattern, and the like.
[0037]
The operation pattern table 63 stores the operation pattern of the generator selected by the supply and demand adjustment unit 51. FIG. 6 is a diagram illustrating an example of the operation pattern table 63. The operation pattern table shown in FIG. 6 indicates that the operation pattern is selected as follows for each generator. That is, the operation patterns 1, 4 and 2 are sequentially selected for the generators # 1 to # 3 which are the generators for pattern operation. Further, no operation pattern is selected for the generators # 4 and # 5, which are generators for adjustment, and the generator # 6 is stopped.
[0038]
The operation plan table 64 stores the generator operation plan created by the supply and demand adjustment unit 51. FIG. 7 is a diagram illustrating an example of the operation plan table 64. The operation plan table shown in FIG. 7 accumulates the power generation amount to be generated by each generator every 5 minutes for one day. The power generation amount is expressed using a ratio to the maximum power generation amount of each generator. The arrow included in the operation plan table indicates that the power generation amount is the same as that five minutes ago.
[0039]
FIG. 8 is a flowchart showing the operation of the generator control system 12. 9 to 11 are flowcharts of subroutines called from the flowchart shown in FIG. The generator control system 12 performs planned control and real-time control according to these flowcharts. Hereinafter, these flowcharts will be described including the operations of the demand prediction unit 50, the supply and demand adjustment unit 51, the operation plan transmission unit 52, and the control amount transmission unit 53.
[0040]
The generator control system 12 first determines whether or not the current time is the time (23:30) at which the planned control is performed (step S101). The generator control system 12 proceeds to step S102 if the current time is a time for performing the planned control, and proceeds to step S105 otherwise.
[0041]
When performing the plan control, the generator control system 12 acquires the power reception plan 41 of the next day from the power reception plan creation system 11 (step S102). The acquired power reception plan 41 is supplied to the supply and demand adjustment unit 51.
[0042]
Next, the generator control system 12 calls a subroutine for adjusting supply and demand for the next day (step S103). In step S <b> 103, the supply and demand adjustment unit 51 refers to the constraint condition database 60, the charge database 61, and the generator database 62, and creates a generator operation plan for the next day so as to satisfy the given power reception plan 41. The created operation plan is accumulated in the operation plan table 64. At the same time, for the pattern generator, the operation pattern identification number is stored in the operation pattern table 63. Details of supply and demand adjustment will be described later.
[0043]
Next, the generator control system 12 calls a subroutine for transmitting the next day's operation plan to each generator (step S104). FIG. 9 is a flowchart of a subroutine for transmitting an operation plan for the next day. In this subroutine, the operation plan transmission unit 52 transmits the operation plan for the next day to each generator as shown below.
[0044]
First, the operation plan transmission unit 52 selects the first generator (step S201). Next, the operation plan transmission unit 52 transmits the operation plan for the next day to the selected generator (step S202). Next, the operation plan transmission unit 52 checks whether or not the operation plan for the next day has been transmitted to all the generators (step S203). When the next day's operation plan is transmitted to all the generators, the operation plan transmission unit 52 ends the process. Otherwise, the operation plan transmission unit 52 selects the next generator (step S204) and returns to step S202.
[0045]
Next, the generator control system 12 determines whether or not the current time is a time (every 5 minutes) at which real-time control is performed (step S105). The generator control system 12 proceeds to step S106 if the current time is a time for performing real-time control, and proceeds to step S110 otherwise.
[0046]
When performing real-time control, the generator control system 12 receives the received power amount 42 from the power meter 22 (step S106). Next, the generator control system 12 predicts the power demand for the next 30 minutes based on the received power reception amount 42 (step S107). In step S <b> 107, the demand prediction unit 50 predicts power demand for the next 30 minutes at intervals of 5 minutes based on the amount of received power 42 received from the power meter 22. For example, the demand prediction unit 50 accumulates a history of the received power amount 42 for a certain period, determines whether the received power amount is increasing or decreasing, and predicts the power demand for the next 30 minutes. . In performing this prediction, the demand prediction unit 50 may refer to the history of the power generation amount 43 and the power reception plan 41 provided earlier in addition to the history of the power reception amount 42. The calculated predicted value of power demand is provided to the supply and demand adjustment unit 51.
[0047]
Next, the generator control system 12 receives the power generation amount 43 from the power meter 32 (step S108). Next, the generator control system 12 calls a subroutine for adjusting supply and demand for the next 30 minutes (step S109). In step S109, the supply and demand adjustment unit 51 refers to the constraint condition database 60, the charge database 61, and the generator database 62, and generates power for the next 30 minutes based on the calculated predicted power demand and the received power generation amount 43. Create an operation plan for the aircraft. In the operation plan, the amount of power generated every 5 minutes is specified for each generator. The created operation plan is accumulated in the operation plan table 64.
[0048]
FIG. 10 is a flowchart of a subroutine for adjusting supply and demand. This subroutine is called from steps S103 and S109. In the supply and demand adjustment, the power generation amount of each generator is assigned so as to satisfy a given demand amount and to minimize the power generation cost. The supply and demand adjustment unit 51 creates an operation plan for the next day when called from step S103, and creates an operation plan for the next 30 minutes when called from step S109. The supply and demand adjustment process shown in FIG. 10 includes a partial adjustment process (steps S301 to S305) for creating an operation plan for only the adjustment generator, and an overall adjustment for creating a plan for all the generators including the pattern operation generator. Processing (steps S307 to S310). The overall adjustment process is performed only when a satisfactory result is not obtained by the partial adjustment process.
[0049]
In the partial adjustment process, the supply and demand adjustment unit 51 first initializes the operation plan table 64 (step S301). Next, the supply and demand adjustment unit 51 determines whether or not the plan control is being executed, that is, whether or not this subroutine is called from Step S103 (Step S302). When the generator control system 12 is executing the plan control (when calling from step S103), the supply and demand adjustment unit 51 selects an operation pattern that satisfies the power reception plan 41 from the past operation patterns, and The operation pattern table 63 is set (step S303). When the generator control system 12 is executing real-time control (when calling from step S109), the supply and demand adjustment unit 51 uses the operation pattern specified by the operation pattern table 63 as it is. The process proceeds to step S304 without performing any processing.
[0050]
Next, the supply and demand adjustment unit 51 sets the operation pattern specified by the operation pattern table 63 in the operation plan table 64 (step S304). That is, the supply and demand adjustment unit 51 sequentially reads the contents of the operation pattern table 63, reads the operation pattern having the read identification number from the generator database 62, and writes it in the operation plan table 64. Next, the supply and demand adjustment unit 51 allocates the remaining power demand to the adjustment generator (step S305). Thus, the operation plan for the pattern generator is created in step S304, and the operation plan for the adjustment generator is created in step S305.
[0051]
Next, the supply and demand adjustment unit 51 determines whether or not the operation plan created by the partial adjustment process satisfies a predetermined condition (step S306). Whether or not the operation plan satisfies a predetermined condition is determined using the constraint condition database 60 or the like. The supply and demand adjustment unit 51 ends the process if the operation plan satisfies a predetermined condition, and otherwise proceeds to step S307 to perform the overall adjustment process.
[0052]
When the operation plan created by the partial adjustment process does not satisfy the predetermined condition, the supply and demand adjustment unit 51 creates the generator operation plan again by the overall adjustment process (steps S307 to S310). For this reason, the supply and demand adjustment unit 51 first initializes the operation plan table 64 again (step S307). Next, the supply and demand adjustment unit 51 freely allocates pattern operation generators so as to satisfy the given demand, and accumulates the results in the operation pattern table 63 (step S308). Next, similarly to steps S304 and S305, the supply and demand adjustment unit 51 sets the operation pattern specified by the operation pattern table 63 in the operation plan table 64 (step S309), and the remaining power for the adjustment generator is set. Is assigned (step S310).
[0053]
As described above, in the supply and demand adjustment process shown in FIG. 10, it is possible to avoid a change in the operation plan of the pattern operation generator by preferentially correcting the operation plan of the adjustment generator. In addition, in the supply and demand adjustment process shown in FIG. 10, the entire adjustment process is performed even when the real-time control is being executed, and the operation pattern of the pattern operation generator can be changed. The overall adjustment process may not be performed.
[0054]
Next, the generator control system 12 calls a subroutine for calculating and transmitting a control amount based on the corrected operation plan for each generator (step S110). FIG. 11 is a flowchart of a subroutine for transmitting a control amount to the generator. In this subroutine, the control amount transmission unit 53 converts the corrected operation plan into a control amount and transmits it according to the operation pattern supply method of each generator.
[0055]
The controlled variable transmission unit 53 first selects the first generator (step S401). Next, the control amount transmission unit 53 performs case classification according to the type of generator (step S402). The control amount transmission unit 53 proceeds to step S403 when the generator is a pattern operation generator, and proceeds to step S406 when the generator is an adjustment generator. When the generator is a pattern operation generator, the control amount transmission unit 53 further classifies the case according to the operation pattern supply method (step S403). When the operation pattern supply method is type A, B, or C, the control amount transmission unit 53 proceeds to steps S404, S406, and S408, respectively.
[0056]
When the generator is a type A pattern operation generator, the control amount transmission unit 53 checks whether or not the control amount accumulated in the operation plan table 64 has changed from the previous time (step S404). Next, when there is a change in the control amount, the control amount transmission unit 53 transmits the control amount after the change to the generator 31 (step S405). Next, the control amount transmission unit 53 proceeds to step S408.
[0057]
When the generator is a type B pattern operation generator or an adjustment generator, the control amount transmission unit 53 checks whether or not the current time is a time for transmitting the control amount (step S406). Next, the generator control system 12 transmits the control amount to the generator 31 when the current time is the time for transmitting the control amount (step S407). Next, the control amount transmission unit 53 proceeds to step S408.
[0058]
When the generator is a type C pattern operation generator, the control amount transmission unit 53 does not perform real-time control on the generator, and thus proceeds to step S408 without performing any processing. .
[0059]
Next, the control amount transmission unit 53 checks whether or not the corrected operation plan has been transmitted to all the generators (step S408). When the corrected operation plan is transmitted to all the generators, the control amount transmission unit 53 ends the process. Otherwise, the control amount transmission unit 53 selects the next generator (step S409) and returns to step S402.
[0060]
Next, the operation of the generator control system 12 when an abnormality occurs in the generator will be described. FIG. 12 is a flowchart showing the operation of the generator control system 12 when an abnormality occurs in the generator. The process shown in FIG. 12 is executed as an interrupt process routine when an abnormality occurs in the generator.
[0061]
When an abnormality occurs in the generator, the generator control system 12 first receives information about the abnormal generator (step S501). In step S <b> 501, the generator control system 12 receives a notification that an abnormality has occurred in the generator 31 from the power generator system 30 via the communication network. Alternatively, the generator control system 12 may itself detect that an abnormality has occurred in the generator 31 by detecting that the power generation amount 43 of the generator 31 is significantly different from the specified power generation amount.
[0062]
Next, the generator control system 12 sets the “abnormal generator” column of the operation pattern table 63 to “stopped” (step S502), and ends the interrupt process.
[0063]
Thereafter, the generator control system 12 performs the real-time control in steps S105 to S109 shown in FIG. 10 when it is time to perform the real-time control. However, since the column of abnormal generators included in the operation pattern table 63 is already “stopped”, supply and demand adjustment according to the status of the abnormal generators is performed.
[0064]
FIG. 13 is a diagram illustrating a state in which a plurality of generators are controlled by the generator control system 12. In FIG. 13, the generator control system 12 is connected to four power generation company systems 30a to 30d, and each of the power generation company systems 30a to 30d controls the generators 31a to 31d, respectively. The generators 31a to 31c are type A, B, and C pattern operation generators, respectively, and the generator 31d is an adjustment generator. Thus, even when a plurality of generators having different operation pattern supply methods are connected, the generator control system 12 can control these generators in a unified procedure.
[0065]
FIG. 14 is a diagram illustrating the amount of communication between the generator control system 12 and the power generation company systems 30a to 30d illustrated in FIG. When the power generation amount of the generators 31a to 31d shown in FIG. 13 changes as shown in FIG. 14 (a), between the generator control system 12 and the power generation company systems 30a to 30d, FIG. Communication is performed at the timing shown in FIG. In FIG. 14B, the pulse shown on the time axis indicates that communication is performed at that time.
[0066]
The generator control system 12 performs planned control once a day, for example, at 23:30 every day. For this reason, the generator control system 12 transmits the operation plans 44a to 44d in the same manner to the power generation company systems 30a to 30d at 23:30 every day.
[0067]
The generator control system 12 performs real-time control every 5 minutes. For this reason, the generator control system 12 transmits a control amount 45b every 30 minutes to the power generation company system 30b. On the other hand, since the type A pattern operation generator 31a has a function of holding the control amount, the generator control system 12 generates power when the control amount changes, that is, at 8:00, 14:00, and 22:00. A control amount 45a is transmitted to the business operator system 30a. Further, since the type C pattern operation generator 31c cannot be controlled in real time, the generator control system 12 does not transmit the control amount to the power generator system 30c in real time. The generator control system 12 transmits a control amount 45d to the adjustment generator 31d every 5 minutes. As described above, the communication amount between the generator control system 12 and the power generation company system 30 can be reduced by switching the method of supplying the corrected operation plan according to the characteristics of the generator.
[0068]
As described above, the generator control system according to the present embodiment acquires a demand plan from a power consumer at a frequency of once a day, and creates a generator operation plan based on the acquired demand plan. Transmit to each generator and receive the amount of power received by the power consumer and the amount of power generated by the power generation company every 5 minutes, and modify the generator operation plan so that the amount of received power and the amount of power generation match each Send to generator. Thereby, the electric power which follows the amount of electric power received which fluctuates in real time can be generated, and it can supply to an electric power consumer.
[0069]
In the present embodiment, the power generator system and the generator are arranged one-on-one, but one power generator system may control a plurality of generators. The generator controlled by the retailer system may include a generator owned by itself in addition to the generator owned by the generator.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a retailer system including a generator control system according to an embodiment of the present invention.
FIG. 2 is a diagram showing a power supply form by a power retailer.
FIG. 3 is a diagram showing an example of an operation pattern of a generator.
FIG. 4 is a diagram showing a generator control method by a retailer system.
FIG. 5 is a block diagram showing a configuration of a generator control system according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating an example of an operation plan table.
FIG. 7 is a diagram illustrating an example of an operation pattern table.
FIG. 8 is a main flowchart showing the operation of the generator control system according to the embodiment of the present invention.
FIG. 9 is a flowchart of an operation plan transmission subroutine of the generator control system according to the embodiment of the present invention.
FIG. 10 is a flowchart of a supply and demand adjustment subroutine of the generator control system according to the embodiment of the present invention.
FIG. 11 is a flowchart of a control amount transmission subroutine of the generator control system according to the embodiment of the present invention.
FIG. 12 is a flowchart showing a process when an abnormality occurs in the generator control system according to the embodiment of the present invention.
FIG. 13 is a diagram illustrating a state in which a plurality of generators are controlled by the generator control system according to the embodiment of the present invention.
FIG. 14 is a diagram showing a communication amount between the generator control system and the power generation company system according to the embodiment of the present invention.
[Explanation of symbols]
1 ... Electric power transmission network
10 ... Retailer system
11 ... Power reception plan creation system
12 ... Generator control system
20 ... Consumer system
21 ... Consumer equipment
22, 32 ... Electric power meter
30 ... Power generation system
31 ... Generator
40 ... Demand for next day
41 ... Receiving plan
42 ... Amount of power received
43 ... Power generation
44 ... Operation plan
45 ... Control amount
50 ... Demand forecasting department
51 ... Supply and demand adjustment department
52. Operation plan transmission unit
53. Control amount transmitter
60 ... Constraint database
61 ... Rate database
62 ... Generator database
63 ... Driving pattern table
64 ... Operation plan table

Claims (7)

A generator control method for controlling a plurality of generators owned by a power generation company in order for an electric power retailer to supply electric power to a power consumer,
A demand plan acquisition step for acquiring a demand plan from an electric power consumer;
An operation plan creation step for creating an operation plan for the generator based on the demand plan;
An operation plan transmission step for transmitting an operation plan of the generator to each of the generators;
A received power amount receiving step for receiving a received power amount in real time in a power consumer;
A power generation reception step of receiving real-time power generation by a power generation company;
An operation plan correction step for correcting the operation plan of the generator so that the received power amount and the generated power amount match,
A real-time control step for transmitting to each of the generators a modified operation plan of the generator ;
And an abnormality processing step of correcting an operation plan of the generator to reflect an operation state of the abnormal generator when an abnormality occurs in the generator. The operation plan creation step creates an operation plan of the generator at a first time interval,
2. The generator control method according to claim 1, wherein in the operation plan correction step, the operation plan of the generator is corrected at a second time interval shorter than the first time interval.   The operation plan correcting step predicts a future power demand in a power consumer based on the received amount of received power, and corrects the operation plan of the generator based on the predicted power demand. The generator control method as described.   The operation plan correction step includes a pattern operation generator that can change the power generation amount of the generator only in accordance with a predetermined operation pattern, and an adjustment generator that can control the power generation amount in real time; The generator control method according to claim 1, wherein the operation plan of the adjustment generator is corrected with priority.   The real-time control step calculates a control amount required for the generator based on an operation plan after correction of the generator for each generator, and performs the control at a timing required by the generator. The method of controlling a generator according to claim 1, wherein the quantity is transmitted.   In the real-time control step, when the generator has a function of immediately switching the power generation amount according to the control amount, the control amount is transmitted to the generator every time the control amount is calculated. The generator control method according to claim 5.   In the real-time control step, when the generator has a function of holding the control amount and switching the power generation amount according to the held control amount, the control amount is changed when the calculated control amount changes. The generator control method according to claim 5, wherein transmission is performed to the generator.

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