JP2002051465A - Power supply method, power system controller and memory medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably supply powers from power suppliers to users and improve economy and energy-saving efficiency by a method, where the power generating equipment of the power supplier is connected to the loads of the users via non-forwarding power systems and the safe and optimum non-forwarding power system management is realized according to the status. SOLUTION: This power supply system comprises a power system X1 of a power utility, a plurality of non-forwarding systems A2, B3, C4 and D5, a plurality of power suppliers 11 connected to the systems 1-5, a plurality of power users 12 and a monitor/command center 13 managing the powers of the non-forwarding systems A2-D5. The non-forwarding systems A2 and D5 are independent systems and are not linked with the power system X1 of the power utility. The non-forwarding systems B3 and C4 are linked respectively with the power system X1 of the power utility with linkage lines 14 and 15. The respective power suppliers 11 and the respective power users 12 are connected to the monitor/command center 13 with a communication line 16 and transmit/receive various types of data 21 and 22, which are related to the operation, to/from the monitor/command center 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting power generation facilities of a plurality of power suppliers and loads of a plurality of customers via a plurality of power systems, and operating and managing the power systems to the customers. Method and apparatus for providing power.

[0002]

2. Description of the Related Art Usually, most of electric power is supplied via an electric power system owned by an electric power company. The control, protection, and monitoring of the power system are performed by the power company, and the function of stabilizing the frequency for maintaining the power quality is also performed by the central power supply control center (hereinafter referred to as the middle supply) owned by the power company. Various power sources, such as thermal power, hydraulic power, and nuclear power, owned by the power company are connected to this power system, and the IPP, which has recently been constructed, is also connected to the power system in such a manner that the power company buys power.

[0003] In recent years, the liberalization of large customers of electric power has made it possible for large customers to receive electricity from electric power suppliers other than electric power companies via the electric power system of the electric power companies. In this case, it is obliged to pay a postage which is a usage fee of the power system of the power company according to the amount of power.

[0004]

The above-described conventional power supply system is widely used, and a stable and high-quality power system is maintained under the control of a power company. However, as described above, when using a power company-owned power system to transfer power, a contract fee is required,
Even if there is an optimal electricity supplier close to the customer, the consignment may be abandoned. From the viewpoint of economy and energy loss, it is desirable to supply electric power from an electric power supplier that does not require a consignment fee and is located close to the customer.

[0005] In order to solve such problems of the conventional power supply system, it has been considered to install a non-consignment electric power system different from a consignment electric power system of an electric power company to supply electric power. . Such a non-contracted power transmission system has a difference as shown in the following Table 1 from an existing consigned power transmission system of a power company.

[Table 1]

[0006] In particular, the non-consignment power system has a great merit that a consignment fee is unnecessary, and also has a merit that the power transmission loss is reduced if a suitable power supplier is nearby.

Therefore, an object of the present invention is to connect a power generation facility of a power supplier and a load of a consumer via a non-committed power system to realize safe and optimal non-committed power system operation according to the situation. Accordingly, it is an object of the present invention to provide a suitable power supply method and a power system control device that enable stable supply of power from a power supplier to a customer, are excellent in economy, and have high energy saving efficiency.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for connecting a non-commissioned power system to a power transmission system of an electric power company. By appropriately setting the operating conditions for the connection between the power grid and the power generation facilities of the power supplier or between the non-grid power grid and the load of the customer, stable power from the power supplier to the customer can be obtained. Is provided.

According to a first aspect of the present invention, there is provided a power supply method for connecting a power generation facility of a power supplier and a load of a customer via a non-consigned power transmission system and supplying power to the customer. The non-contracted power transmission system is connectable to the power transmission / reception system of the power company through the switching device, and creates switching device operating conditions for opening the switching device based on at least the power receiving condition from the power company, Power data flowing between the committed power system and the non-committed power system is input, and it is determined whether or not the operating condition of the switching device is satisfied using the power data, and the operating condition of the switching device is satisfied. In some cases, the opening / closing means is opened.

[0010] According to the present invention, by appropriately creating the operating condition of the switching means based on at least the power receiving condition from the power company, the switching means is opened according to the situation, and the non-committed power transmission system is constructed. It can be disconnected from the power transmission system of the power company. For example, when the power flow from the power transmission system to the non-commissioned power system is specified as the power reception condition from the power company, when the power flow exceeds a predetermined value, the opening / closing means is opened. And disconnection from the power transmission system of the power company.

According to a second aspect of the present invention, there is provided a power supply method for connecting a power generation facility of a power supplier and a load of a customer via an unconsigned power transmission system to supply power to the customer. The non-contracted power transmission system is connectable to the power transmission / reception system of the power company through the switching means, and creates a switching means operating condition for opening the switching means. Executing supply / demand balance control in a transmission / reception power system and, when the operating condition of the opening / closing means is satisfied, opening the opening / closing means and executing at least the demand / supply balance control and frequency stabilization control. It is.

According to a tenth aspect of the present invention, the invention of the second aspect is grasped from the viewpoint of an apparatus, and includes a switching unit with a power transmission / reception system of an electric power company, and is provided with an electric power supplier. A power system control device for controlling a non-commissioned power system that supplies power from a power generation facility to a load of a customer,
Means for creating an opening / closing means operating condition for opening the opening / closing means, means for executing at least supply / demand balance control in the non-committed power system until the opening / closing means operating condition is satisfied, and Means for outputting a command to open the opening / closing means when the condition is satisfied, and executing frequency stabilization control in addition to the supply / demand balance control.

According to a thirteenth aspect of the present invention, the invention of the second aspect is grasped from the viewpoint of a storage medium storing a program therefor. A storage medium storing a computer-readable program for controlling a non-contracted power transmission system that supplies power from a power generation facility of a power supplier to a load of a consumer, wherein the program includes the switching unit. A process of creating an opening / closing unit operating condition to be opened; and a process of executing at least supply / demand balance control in the non-consigned power transmission system until the opening / closing unit operating condition is satisfied. Outputting a command to open the opening / closing means and executing frequency stabilization control in addition to the supply / demand balance control. It is characterized in that it has been configured.

According to the second, tenth, and thirteenth aspects of the present invention, when the switching means is closed and the non-committed power system is connected to the power transmission system of the electric power company, at least the non-committed power system is connected. It is possible to perform stable supply-demand balance control within the system to perform stable system control of the non-consigned power transmission system, and to improve economic efficiency and energy saving efficiency.
Further, in this case, the frequency of the non-committed power transmission system changes stably in synchronization with the cooperated committed power transmission system. In addition, in the state where the open / close means is opened and the non-committed power system is separated from the committed power system, the effect of frequency stabilization by the committed power system cannot be obtained. The frequency can be stabilized by performing the frequency stabilization control.

According to a third aspect of the present invention, there is provided a power supply method for connecting a power generation facility of a power supplier and a load of a customer via an unconsigned power transmission system to supply power to the customer. The non-consigned power transmission system can be connected to a power transmission system of a power company, and the power generation equipment can be connected to the non-consigned power transmission system through individual switching means for each power supplier or each power generation facility. A switching means operating condition for opening the switching means is created based on the lower limit condition of the power received from the apparatus, and a priority order for operating the corresponding switching means is determined for each power supplier or each power generation facility. Inputting power data flowing between the committed power system and the non-committed power system, and using the power data to determine whether the operating condition of the switching means is satisfied; When matter is established, it is characterized in that the switching means operating conditions in accordance with the priority to the individual switching means until satisfied in the open.

According to an eleventh aspect of the present invention, the invention of the third aspect is grasped from the viewpoint of an apparatus, and is configured to be connectable to a power transmission system of a power company. Alternatively, a power system control device for controlling an unconsigned power system that provides individual switching means for each power generation facility and supplies power from the power generation facility of the power supplier to the load of the customer, at least from the power company. A means for creating an opening / closing means operating condition for opening the opening / closing means based on the lower limit condition of the received power, and a priority order for operating the corresponding opening / closing means for each power supplier or each power generation facility. Means for inputting power data flowing between the power transmission system and the non-power transmission system, and means for determining whether or not the open / close means operating condition is satisfied using the power data. And a means for outputting a command to open the individual opening / closing means until the opening / closing means operating condition is not satisfied according to the priority when the opening / closing means operating condition is satisfied. Is what you do.

According to the third and eleventh aspects of the present invention, the operating condition of the opening / closing means is appropriately created based on at least the lower limit condition of the power received from the electric power company. By opening the switching means, the power generation equipment of the power supplier can be disconnected from the untrusted power transmission system according to its priority. For example, if the power supplied from the power transmission system to the non-commissioned power system satisfies the lower limit condition of the power received from the power company, the power generation equipment is disconnected from the non-committed power system and satisfies the lower limit condition. If not, it is possible to connect the power generation equipment to the non-commissioned power system. Regarding the priority in this case, it is possible to operate such that power generation facilities with low power supply stability are preferentially disconnected and power generation facilities with high stability are connected preferentially.

According to a fourth aspect of the present invention, there is provided a power supply method for connecting a power generation facility of a power supplier and a load of the customer via an unconsigned power transmission system to supply power to the customer. The non-consigned power system is connectable to a power transmission system of a power company, and the load is connectable to the non-contracted power system through individual switching means for each customer or each load. Based on the upper limit condition of the electric power, a switching means operating condition for opening the switching means is created, and for each customer or load, a priority order for operating the corresponding switching means is determined, and And the power data flowing between the non-commissioned power system and input power data, and using the power data to determine whether the open / close means operating condition is satisfied. It is characterized in that the switching means operating conditions in accordance with the priority to the individual switching means until satisfied in the open.

According to a twelfth aspect of the present invention, the invention of the fourth aspect is grasped from the viewpoint of an apparatus, and is configured to be connectable to a power transmission system of an electric power company. An electric power system control device for controlling an unconsigned electric power system that includes individual switching means for each load and supplies electric power from a power generation facility of a power supplier to a load of a consumer, and at least receives electric power from an electric power company. Means for creating opening / closing means operating conditions for opening the opening / closing means based on the upper limit condition, and for each customer or for each load,
Means for determining the priority order for operating the corresponding switching means, means for inputting power data flowing between the committed power system and the non-committed power system, and the operating condition of the switching means is established using the power data. Means for determining whether or not to perform the operation, and, when the operating condition of the opening / closing means is satisfied, means for outputting a command to open the individual opening / closing means until the operating condition of the opening / closing means is not satisfied according to the priority order. , Are provided.

According to the fourth and twelfth aspects of the present invention, the operating condition of the opening / closing means is appropriately created based on at least the upper limit condition of the power received from the electric power company. By opening the switchgear, the load on the customer can be separated from the untrusted power grid according to its priority. For example, if the power supplied from the power grid to the non-grid power system exceeds the upper limit condition of the power received from the power company, it is possible to separate the customer load from the grid power system. It is. With regard to the priority in this case, it is possible to operate such that the load that is less affected by the interruption is preferentially separated.

According to a fifth aspect of the present invention, in the power supply method according to any one of the first to fourth aspects, transmission line construction method information is stored in advance together with a construction cost with respect to a transmission line of the non-contracted transmission system. In advance, potential construction methods are extracted from the transmission line construction method information based on the geographic information where the power generation facilities of the power supplier or the loads of the customers are located. At one time, select one construction method based on the construction cost, and when there is only one extracted construction method, select that construction method,
Transmission line construction is performed according to the selected construction method. According to the present invention, based on the geographical conditions where the power generation facilities of the power suppliers and the loads of the consumers are located,
By selecting an appropriate construction method, transmission line construction can be performed efficiently.

According to a sixth aspect of the present invention, there is provided an electric power supply method for supplying electric power from a plurality of electric power companies to a plurality of loads, wherein the plurality of loads are divided according to function or use, and The required stability of the power is determined in advance, and the power of a power company that supplies the power that satisfies the required stability is supplied to the load according to the function or application. According to the present invention, for a plurality of loads,
Since it is possible to reliably supply power that satisfies the required power stability according to its functions and applications, it is possible to receive a stable power supply according to the required power stability, especially from the viewpoint of the customer. be able to.

According to a seventh aspect of the present invention, there is provided a power supply method for connecting a power generation facility of a power supplier and a load of a customer via an unconsigned power transmission system to supply power to the customer. Select the load to be supplied with power based on the load information for each function or use of the house and the required stability information of the power for each function or use, and supply the power to the selected load for each function or use. It is characterized by doing. According to the present invention, a load to be supplied can be selected based on the required stability of power for each load, and power can be reliably supplied to the selected load. From the standpoint of efficiency, efficient power supply to appropriate suppliers can be realized.

[0024] The invention according to claim 8 is a power supply method for connecting a power generation facility of a power supplier and a load of a customer via an unconsigned power transmission system and supplying power to the customer, wherein at least Loads to be supplied with power are divided into groups based on the load information for each function or use of the customer and the required stability information for each function or use, and the unconsigned power transmission system is supplied for each group. It is characterized by doing. According to the present invention, the loads are grouped based on the required power stability for each load,
Electricity can be supplied for each group via the unregulated power transmission system for each group. Therefore, it is possible to receive a stable power supply from the customer's point of view in accordance with the required power stability, and to realize efficient power supply to the appropriate supply destination from the point of view of the non-contract power transmission company. it can.

According to a ninth aspect of the present invention, in the power supply method according to the eighth aspect, when there are a plurality of the groups, at least one of the non-consolidated transmission power systems is determined based on the required power stability. , And can be connected to a power transmission system of a power company. According to the present invention, in particular, a group of loads that require a relatively high degree of stability can be connected to the power transmission system of a power company. In this case, the group requiring high stability can receive the power supply from the power transmission system of the power company even if the stable power supply from the non-transmission power system cannot be received. as a result,
A stable power supply can always be received.

According to a fourteenth aspect of the present invention, there is provided a power supply method for connecting a power generation facility of a power supplier and loads of a plurality of customers via a non-consigned power transmission system to supply power to the customers. Calculating a power generation schedule for each power generation facility and a power reception schedule for each customer, based on the load demand schedule and power data including at least the power generation capability in the non-consigned power transmission system, Guiding and outputting the calculated power generation schedule to each power generation facility via the communication line, and guiding and outputting the calculated power reception schedule to each customer via the communication line; and At the time of output operation, in order to balance supply and demand in the non-consigned power transmission system, an output command is issued in real time to each power generation facility via a communication line. A step obtaining, is characterized in that it comprises a.

According to the present invention, the operator of the non-commissioned power transmission system determines the power generation schedule of each power generation facility and the power reception schedule of each customer based on the demand schedule of each load, and compares these schedules with each power generation facility. -Notify the customer in advance. As a result, each power generation facility / consumer can perform appropriate output operation and power reception according to the schedule, after performing in-station system switching, startup, and power reception preparation in advance based on those schedules. The operator of the non-commissioned power transmission system can also perform real-time supply and demand balance control (load control, frequency control, various protection controls, and the like) based on output commands to each power generation facility. By optimizing such power generation / reception schedule calculation and supply / demand balance control based on power data such as the amount of power, the reliability of the power, and the transfer fee, a stable power supply can be realized, and It is possible to maximize the profits of consumers and consumers.

[0028] The invention according to claim 15 is a power supply method for connecting a power generation facility of a power supplier and loads of a plurality of customers via a non-consigned power transmission system to supply power to the customers. The non-consigned power transmission system is connectable to a consigned power transmission system of a power company, and storing the contract power information of each customer input; and at least storing the stored contract power information of each customer. Calculating the contract power with the power company using the contract power, and concluding a contract with the power company based on the calculated contract power, and after the contract is concluded, storing power data relating to the supply from the power company. And storing power data relating to the supply of the power supplier, storing power data relating to the consumption of each customer, and charging the power company based on the power data of the power company. Pay for And, the storage to have electric power company,
A power supplier, and a step of calculating a charge to be paid by each customer based on each power data of the customer, and a step of charging the calculated charge to each customer. It is characterized by the following.

According to the present invention, the customer and the power supplier connected to the non-contracted power transmission system do not need to individually contract with the power company, and the operator of the non-contracted power transmission system can use those customers, On behalf of the non-consigned power system, including the power supplier, a collective contract can be made with the power company. Then, based on the stored various power data, the operator of the non-contracted power system collectively pays the power usage fee in the non-contracted power system to the power company and charges each customer a fee. be able to. Therefore, from the customer's point of view, while receiving power supply from both the non-consigned power system and the power company's consigned power system, it is only necessary to collectively pay the power usage fee to the operator of the non-contracted power system. , And the fee settlement is simple.

The explanation of important terms in the present invention,
The definition is as follows. Among the “load functions or applications”, the functions are, for example, lighting, electric motors, etc., and the applications refer to, for example, a series of loads used in a production line. The purpose is sufficient. "Electricity company" is a general electricity company under the Electricity Business Law as of the filing date of this application, and refers to a so-called 10 electricity company, whose successor or transfer of ownership and management of the electricity system including electric wires etc. Includes the relocated company, if any.
The “stability” includes the reliability. "Power generation equipment"
The term includes both a case where each power generation device is referred to as a power generation facility and a case where a plurality of power generation devices are collectively referred to as a power generation facility. In addition, devices that accompany the power generation device (for example, substation devices normally used for the power generation device) are also included.
"Load" refers to the load for each load device,
This includes both cases where a plurality of load devices are collectively referred to as a load. In addition, it is assumed that a device attached to the load device (for example, a substation device normally used for the load device) is also included.
"Received power condition" means all conditions related to power for receiving supply. For example, it includes the maximum power that can be supplied and the direction of the power flow. The `` upper limit condition '' of received power is mainly the condition related to the maximum power that can be supplied from the power company, which is often specified in contracts, but the `` lower limit condition '' is not always clear There are many. Therefore, the "lower limit condition" is an explicit or implicit condition for received power other than the upper limit condition, such as whether electricity must not flow to the grid of the power company or the condition of power flow such as allowable time if it deviates from it. Is used to mean “Transmission power system” refers to a power system owned or managed by a power company. `` Untrusted transmission system ''
Means an electric power system other than the power transmission system.

"Power data" means all data related to power. For example, it includes not only a power value but also a voltage, a current, a frequency, a power amount, a power rate, and the like. “Demand and supply balance control” includes so-called schedule control or real-time control for maintaining a balance between supply and demand. "Frequency stabilization control" is a so-called AFC (Automa
tic Frequency Control). "Arrangement"
Including contracts and promises. “Contract power information” means information on power at the time of contract. For example, it also includes information on how many KWs you want to contract. “Operation” is intended to include all methods for producing a result by a computer. Therefore, in addition to the calculation, for example, a case where the calculation is derived with reference to a table is also included.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments to which the present invention is applied will be described below in detail with reference to the drawings. Note that, from the viewpoint of simplifying the description, the same reference numerals are given to the same components throughout the drawings.

[First Embodiment] [Configuration of First Embodiment] FIG. 1 is a block diagram showing the overall configuration of a power supply system according to a first embodiment of the present invention. As shown in FIG. 1, the power supply system according to the present embodiment includes a power system X1 of a power company and a plurality of non-consolidated transmission systems A which are non-contracted power systems other than the power company.
2, B3, C4, D5, a plurality of power suppliers 11 connected to these systems 1 to 5, and a plurality of power consumers 12
And a monitoring command center 13 that operates the power of the non-consignment transmission systems A2 to D5.

Here, the non-consignment transmission systems A2 and D5 are independent systems that are not linked to the power system X1 of the power company.
On the other hand, the non-consolidated transmission systems B3 and C4 cooperate with the electric power system X1 of the electric power company through the cooperation lines 14 and 15, respectively. Each power supplier 11 and power consumer 12 are connected to a monitoring command center 13 via a communication line 16, and exchange various data 21 and 22 relating to operation. In addition, each electric power supplier 11 and electric power consumer 12
Can transmit and receive power to and from a power system (consignment system) X1 of a power company requiring a consignment fee, as described in the related art.

It should be noted that the signs of the respective parts, for example, the signs of the electric power supplier and the electric power consumer, and the signs of various data, are limited to the minimum necessary for the explanation in order to avoid complication of the drawing. Omitted. In addition, non-consigned systems A2 to D5
What is actually connected to the transmission system X1 is the power source owned by the power supplier 11 and the load owned by the power consumer 12, but here, for simplicity, the transformers and the transformers required for the actual connection are used. Circuit breakers and the like are omitted. Communication line 16
Similarly, the communication device and the like actually used are omitted because they are not the essence of the present invention.

The power supplier 11 is not limited to a person who has a dedicated power generation facility (power supply) for supplying non-contracted power transmission, but also has a surplus power, such as a factory having a private power generation facility. Those that can supply contracted power are also included. Therefore, the amount of power that can be supplied varies depending on the circumstances within each power supplier 11, and the amount of power supplied from each power supplier 11 is smaller than the amount of power supplied from the power grid operated by the power company. Restrictions often apply.

On the other hand, there are various types of power consumers 12, such as factories without private power generation facilities, office buildings, commercial buildings, department stores, supermarkets, hotels, hospitals, and schools. Generally, in such a power consumer, reliability and stability of power required for an owned power load are different. Here, the reliability of the power is a degree at which various risks such as a power failure occur, and may be referred to as the reliability of the power. In addition, the power stability refers to a change in frequency or voltage, and may be referred to as power stability or power quality. In addition, there is a case where stability is included including reliability.

For example, the damage caused by a power failure is clearly different between an office lamp and a product manufacturing device. in this case,
Inexpensive power is suitable for office lamps even if the reliability and stability are low, and manufacturing equipment is required to have expensive but highly reliable and stable power. Since the above-described power supply limitation on the power supply side affects the reliability and stability, it is conceivable to set a power rate according to these.

As described above, the non-consolidated transmission systems A to
D requires power supply and demand balance control in consideration of the circumstances on the power supplier 11 side and the reliability, stability, and price required for the power load on the power consumer 12 side. This is performed at the center 13.

[Control Function and Operation of First Embodiment] [Control of each non-consignment transmission system by monitoring command center]
Monitoring command center 1 for each non-consignment system A2 to D5
Various control functions performed in step 3 and their actions will be described.
In addition, for simplification of description, in the following description, the non-consigned transmission systems A2 to D5 are abbreviated as systems A to D.

[Control of Non-Consignment Transmission System A] The system A connects a plurality of power suppliers 11 (power sources) and a plurality of power consumers 12, and these power sources and consumers are respectively connected to other non-consignment transmission systems. It is also connected to a power system (system D in the example) and a power system of a power company (consignment system). In this case, since the non-consignment grid and the power grid of the power company are not directly linked,
The frequency stabilization control in the non-consigned transmission system is required independently, but when each power supply and the customer send and receive power without permission,
Frequency stabilization control cannot be achieved. For this reason, the monitoring command center 13 which exchanges data between the power supply connected to the system A and the consumer performs the stabilization control of the frequency in the non-consignment transmission system, thereby controlling the power in the non-consignment transmission system. It is possible to increase stability.

From the viewpoint of the customer, as described above, the non-consignment transmission system and the electric power company's power system have different receiving prices, reliability, and stability, respectively. Then, there are three options for the power receiving partner system. These three
It is required to optimally determine the daily schedule of one power receiving ratio. On the other hand, the power supply is configured to be connected to three of the non-consignment systems A and D and the electric power system (consignment system) X of the electric power company, similarly to the customer. In consideration of the price of the electricity tariff in each electric power system, an optimal power selling plan as a power source is desired.

Regarding the system A described above, the monitoring command center 13 has a function of controlling supply / demand load in the system and a function of stabilizing the frequency in the system as described below. (1) Supply and demand load balance control function in the system In the case of the system A, since it is not directly linked to the power system of the power company, in order to stabilize the frequency in the system, the amount of power generation and supply to the system A It is required that the power demand is always balanced. Therefore, the monitoring command center 13 performs the following operation. (A) Optimal calculation of schedule and guide output ・ Optimal calculation of start schedule and load change schedule of each power supply and guide output to each power supply of the result ・ Optimal calculation of power reception schedule of each customer and the result to each customer (B) Electricity supply and demand balance control Demand status is monitored in real time, a correction control command to a power generation command value is calculated to balance power generation and demand in real time, and the correction control command is output to each power supply. . (2) Intra-system frequency stabilization control (constant frequency control) A correction control command to the power generation command value is calculated for the power supply so that the frequency in the system A always becomes the set frequency, and the correction control command is transmitted to each power supply. Output to power supply.

Next, referring to FIG.
3 will be described in detail. For the sake of simplicity, the following description will be made with the exception of the non-consolidated transmission system D. The functions and the operation methods are the same and do not impair the gist of the present invention.

FIG. 2 is a flowchart showing a flow of a series of processes from the schedule optimal calculation and guide output by the monitoring command center 13 to the real-time control of the system A. First, the power demand schedule of the next day is acquired for each customer in the grid A, and the power demand schedule of the grid A is totaled (S201). Next, the power unit price of the grid A and the power grid of the power company (hereinafter abbreviated as grid X),
From the contract power of each customer with the power company and the power generation capacity in the system A, the power receiving schedule from each of the system A and the system X for each customer, and the respective system to the system A and the system X for each power source Is calculated (S20).
2). The calculation result is output as a guide to the power supply side as a power generation schedule for the next day and to the customer as a power reception schedule for the next day, respectively (S203).

For example, when the total of the power demand schedule of the system A is within the power generation capacity, the power is distributed to each power source of the system A by a predetermined method (for example, distribution according to the magnitude of the total power generation). If a power transmission schedule, that is, a power generation schedule, is used, and the surplus power (surplus power) of the generated power is sold to a power company or another non-consigned transmission system, this becomes a power generation schedule (power transmission schedule) for another power system. In this case, as a power supplier, the power transmission distribution can be determined so that the power can be sold to a system that sells higher power at the maximum according to the purchase price of the power on each system side.
As a result, it is possible to maximize the cost merit of both the electric power supplier and the electric power consumer in the grid A, that is, to set an optimal schedule.

If the total of the power demand schedules exceeds the power generation capacity, the power transmission schedule that can be provided to each customer at the maximum is allocated to each customer by a predetermined method (for example, according to the total demand amount). Distribution, etc.), and guide as a power receiving schedule from the system A. In this case, there is a possibility that some customers will exceed the contracted power with the power company, but coordination among the consumers connected in the system A should be made so as not to exceed the contracted power as much as possible. Is also possible. Originally, it should not be necessary to connect a customer who greatly exceeds the power supply capacity connected to the system A in terms of system design.

Each power supply prepares to start up the power generation equipment according to the power generation schedule given by the monitoring command center 13, and after the schedule start time has arrived, performs the system parallel and output operation. Similarly, each customer performs switching of the in-house system (such as operation of a switch for connecting each power load to the system that receives power) and preparation for power reception in accordance with the power receiving schedule given by the monitoring command center 13. After the scheduled start time, power reception starts.

When the output operation of each power supply is started in this way (YES in S204), the monitoring command center 13 performs real-time control of the system A by controlling the output of each power supply (S205). In this case, the output control of each power supply is performed based on the guide of the power generation schedule from the monitoring command center 13 described above, but the power demand on the day does not always go according to the predicted value. Since this difference in supply and demand of power appears as a change in frequency, the monitoring command center 3 gives an output command to each power supply in order to balance the supply and demand of power to the system A in real time. The command value of this output command is a sharing ratio calculated so as to be optimized as a whole in consideration of the efficiency of each power supply and the upper / lower limit value of the output.

Further, a correction control command to each power supply is calculated and output to each power supply so that the frequency in the system A always becomes the set frequency. This correction control command value is output from the power supply and demand balance control described above. Is added to the output command value to be output to the power supply. Also in this case, considering the specificity of each power supply, the addition output value of the correction control is calculated and output so as to be optimal for each power supply. This constant frequency control is also performed when the system frequency fluctuates due to an abnormality on the power supplier side or a drop in the load on the customer, and control is stably performed even for such an abnormality.

FIG. 3 shows the monitoring command center 1 for real-time power supply and demand balance control and frequency control in the system A.
FIG. 3 is a block diagram showing a specific connection configuration and a signal flow in the case where the communication is performed by a third embodiment. For simplicity of the drawing, FIG. 3 shows only a single power supplier (power source) 11 and a single power consumer 12, but in reality, n power suppliers (power sources) ) 11 and m power consumers 12 are connected to the power system X1 and the non-consignment system A2 of the power company, respectively.

The power supplier 11 has a generator X30 and a generator A
31. The generator X30 is a generator provided for the purpose of supplying power to the grid X1, but may not be owned by some suppliers. Generator A
Reference numeral 31 denotes a generator for supplying power to the system A. These generators X30 and A31 are a circuit breaker 40,
They are connected to the systems X1 and A2 via the b breaker 41 and the c breaker 42, respectively.

The power consumer 12 has a power load A32 receiving power from the grid A2 and a power load X33 receiving power from the grid X1.
Have. However, some consumers may not have the power load X1. These loads A
32 and X33 are connected to the systems X1 and A2 via the d circuit breaker 43, the e circuit breaker 44, and the f circuit breaker 45, respectively.

The monitoring command center 13 controls each power supplier 1
1, the power transmission amount 100 (MWOXi) to the system X and the power transmission amount 101 (MWOAi) to the system A,
In this case, the power receiving amount 102 (MWIAj) from the system A, the power receiving amount 103 (MWIXj) from the system X, and the frequency 104 (fA) of the system A are taken in real time. The monitoring command center 13 outputs an output command 105 (DMWOXi: command to generator X, DMWOAi: generator) to each power supplier for power supply / demand balance control and frequency constant control based on the signal thus taken in. A), and outputs a command 106 to each power consumer, such as operation of a switch, as needed. The subscript i of each symbol
Denotes a number representing an individual power supplier, takes a value from 1 to n, and a subscript j denotes a number representing an individual power supplier.
Ｍm.

FIG. 4 shows the real-time supply-demand balance control and the constant frequency control of the system A by the monitoring command center 13.
5 is a control block diagram showing a configuration and a signal flow of the supply-demand balance control unit and the constant frequency control unit when the control is performed, and FIG. 5 is a flowchart showing a flow of a real-time control process of the system A in the monitoring command center 13. As shown in FIG. 4, the supply and demand balance controller uses a supply and demand totalizer 50, a proportional gain 51, and an integrator 52, and the constant frequency controller uses a proportional gain 53 and the like. Can be

Then, as shown in FIG. 5, the supply and demand balance control (S501) and the constant frequency control (S502) are performed by these control units. Are added (S503), the resulting output command value is output to each power supply (S504). 6 and 7 are flowcharts showing subroutines of the supply and demand balance control process (S501) and the constant frequency control process (S502) in FIG. That is, each command value of these control processes is generated as follows.

As shown in FIG. 6, in the supply / demand balance control, first, the supply / demand tallyer 50 calculates the value of ti +
Total deviation 2 between the amount of power transmitted and the amount of power received for system A during Δt seconds 2
00 is calculated (S601). This total deviation 200 is subtracted from the supply and demand set value 201 (normally zero) to obtain a supply and demand deviation 20.
2 is calculated (S602). And this demand-supply deviation 20
2, an output command value 203 is output by the proportional gain 51 and the integrator 52 (S603 to S608).

For example, when the amount of transmitted power and the amount of received power are equal during a certain Δt seconds, the total deviation 200 becomes zero and the supply-demand deviation 202 becomes zero (YES in S603), so that the output command value 203 becomes constant. (S604). On the other hand, when the amount of transmitted power is smaller than the amount of received power, the total deviation 200 is negative and the supply-demand deviation 202 is positive (YE in S605).
S) Therefore, if the proportional gain is positive, the output command value increases (S606). Conversely, if the amount of power transmitted is greater than the amount of power received,
Since the total deviation 200 becomes positive and the supply-demand deviation 202 becomes negative (NO in S605), the output command value decreases due to the positive proportional gain (S607). Then, the output command value 203 obtained in this way is output.

Therefore, the supply and demand balance control unit of the monitoring command center 13 increases the power transmission amount when the power transmission amount is smaller than the power reception amount, and decreases the power transmission amount when the power transmission amount is larger than the power reception amount. Output command value, and acts to secure the supply and demand balance.

On the other hand, as shown in FIG. 7, in the constant frequency control, first, a frequency set value (fset) 210 is set.
Is subtracted from the current system A frequency (fA) 104 to calculate a frequency deviation 211 (S701), and based on the frequency deviation 211, outputs a corrected control command value 212 with the proportional gain 53 (S702 to S707).

For example, when the amount of transmitted power and the amount of received power are equal, the frequency (fA) 104 of the system A becomes the frequency set value (f
set) 210, and the frequency deviation 211 becomes zero (YES in S702).
2 becomes zero (S703). On the other hand, when the power transmission amount is smaller than the power reception amount, the power supply is insufficient, and
(FA) 104 is the frequency set value (fset) 2
It becomes lower than 10. At this time, since the frequency deviation 211 becomes positive (YES in S704), if the proportional gain is positive, the correction control command value 212 becomes a positive value (S705).
Conversely, when the amount of power transmission is larger than the amount of power reception, the supply is excessive, and the frequency (fA) 104 of the system A becomes higher than the frequency set value (fset) 210. At this time, since the frequency deviation 211 becomes negative, the correction control command value 212 becomes a negative value due to the positive proportional gain (S705). Then, the corrected control command value 212 obtained in this way is output (S707), and is added to the output command value 203 for supply and demand balance control as described above (S50).
3).

Accordingly, the constant frequency control unit of the monitoring command center 13 lowers the frequency of the system A when the frequency of the system A is higher than the frequency height, and decreases the frequency of the system A when the frequency of the system A is lower than the frequency set value. A correction control command value for increasing the frequency of the system A is output, and acts to maintain the frequency of the system A at the frequency set value.

In addition, when power is transmitted from the generator X30 to the power load X33 using the power system X1 of the power company, the amount of power transmitted from the generator X30 is 100 (MWXO).
i) and the supply and demand balance control of the power reception amount 103 (MWIXj) of the power load X33 is required. This control basically has the same configuration as the supply and demand balance control in the system A described above.
This can be performed by an output command (DMWOXi) to the generator X30. The description using the above-described flowchart is for the purpose of explaining the present embodiment in an easily understandable manner, and the present invention is not limited to this. The same applies to the following.

As described above, with respect to the grid A that is not linked to the power grid of the power company, the monitoring command center 13 adjusts the load of the daily load change by the customer's power connected to the grid A. The output schedule of each power supplier (power supply) is calculated from the request schedule, and the optimal power receiving schedule is calculated for the customer, and each is guided as today's operation schedule. Then, after the power supply and the customer enter operation, the demand and supply balance in the system is calculated in real time, and the output correction control for the power supply is performed in real time. Further, the system A is a power system X of a power company.
Since it does not cooperate, the monitoring command center 13 performs control for maintaining the frequency, and outputs this control command to each power supply to stably control the frequency. The control of the system A by the monitoring command center 13 can realize a safe and stable supply of power in the system A, and
Both customers will be able to maximize cost benefits.

[Control of Non-Committed Transmission System B] Next, control of the non-committed transmission system B will be described. The system B and the system A described above
The difference is that the grid B is linked to the power grid X of the power company. By cooperating with the power system X of the power company, the frequency of the system B is synchronized with the power system of the power company, and the frequency changes stably. Therefore, the frequency control described in the system A is utilized only when the system B is disconnected from the power system of the power company (for example, when the power system of the power company is abnormal or disconnected systematically).

However, although the power system X and the system B of the power company are linked, the power flow of the link line may be defined by a contract. Specifically, there are contracts such as when a power transmission schedule from the grid B to the power grid X of the power company is determined, or when the power flow is zero and the demand in the grid B is always supplied from the power in the grid B. For example, the upper limit of the power is determined. Accordingly, the monitoring command center 13 performs the same schedule optimal calculation and guide for the system B as for the system A, but performs real-time control in which the change in the cooperation flow with the power system X of the power company is a predetermined flow. It has the function of performing optimal operation control so that

FIG. 8 is a flow chart of the monitoring command center 1 for real-time power supply / demand balance control and frequency control in the system B.
FIG. 3 is a block diagram showing a specific connection configuration and a signal flow in the case where the communication is performed by a third embodiment. For simplification of the drawing, FIG. 8 shows only a single power supplier (power source) 11 and a single power consumer 12, but in reality, n power suppliers (power sources) 11) and m power consumers 12 are connected to the power system X1 and the non-consignment system B3 of the power company, respectively.

FIG. 9 is a control block diagram showing the configuration of the supply and demand balance control unit and the constant frequency control unit and the flow of signals when the monitoring command center 13 performs real-time supply and demand balance control and constant frequency control of the system B. FIG. 10 is a flowchart showing the flow of real-time control processing of the system B in the monitoring command center 13. In the system A, those having the same meanings as those of the components and signals shown in FIGS. 3 and 4 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 9, the difference between the system B and the system A is that the system B cooperates with the electric power system X of the electric power company via the g circuit breaker 46. That is, the g circuit breaker 46
When is on, it is linked, and when it is off, it is not linked. The monitoring command center 13 inputs the on / off state (X-B) of the g circuit breaker 46 and switches the switch 56 of the constant frequency control unit in FIG.

Therefore, as shown in FIG. 10, supply and demand balance control (S1001) and constant frequency control (S100
After the operation 2) is performed, only when the g circuit breaker 46 is off (XB is off), that is, when there is no cooperation (YE in S1003)
S), the switch 56 is turned on, and the correction control command value 21
2 is added to the output command value 203 of the supply and demand balance control (S1004). This makes it possible to keep the frequency of the system B in the non-cooperation state constant. On the other hand, when the g breaker 46 is on (XB is on), that is, in the case of cooperation (NO in S1003), the switch 56 is off, and only the output command value 203 of the supply / demand balance control is the output command value. (S100
5). Then, the resulting output command value is output to each power supply (S1006).

In the supply and demand balance control unit, the power flow set value 2 is set in order to control the power flow at the time of cooperation to a predetermined value.
04, the detected value (MWBX) of the power flow is subtracted, multiplied by a proportional gain 54, and input to the low value selector 55 (LVG). As a result, it is possible to control the power flow so as not to exceed the predetermined value, and to avoid a penalty (excess charge and request for an increase in contract power) imposed when the power flow exceeds the predetermined value.

In addition, the monitoring command center 13 also performs the following various protection controls. For example, when the power flow from the power transmission system to the non-commissioned power system is specified as the power reception condition from the power company, the case where the power flow deviates from the control range for setting the power flow to a predetermined value is set as the opening / closing means. As the operating conditions, when the vehicle deviates in the direction of the upper limit value, the g circuit breaker 46 is opened, and some of the power loads B32 are cut off, or the d circuit breaker 43 of the electric power consumer is opened. Can also be performed. These operations can be automatically performed by various commands 106 from the monitoring command center 13 to the electric power consumers.

In this case, it is desirable to determine in advance the loads that can be cut off and their priorities. Regarding the priority in this case, it is conceivable to preferentially cut off loads that are relatively less affected by the cutoff. Can be Specifically, considering the example of office lighting and manufacturing equipment as described above, for loads requiring stable operation of manufacturing equipment, etc., maintain the power supply as much as possible and stop office lighting and the like. However, it is conceivable to preferentially cut off loads with relatively little effect.

In the above description, both the g breaker 46 and the power load are cut off, but either one may be used. On the other hand, when you are about to deviate from the minimum tide,
Alternatively, when the current deviates in the lower limit direction, such as when the power flow is likely to change from the non-committed power system to the committed power system, the g-breaker 46 is opened and some of the generators B31 are shut off, Alternatively, an operation such as opening the b breaker 41 of the power supplier can be performed. As described above, it is desirable to determine in advance the priority of generators that can be shut off. Further, any one of the g circuit breaker 46 and the generator may be cut off. It is preferable that the received power condition is set to an operating condition of the circuit breaker with a certain margin, rather than immediately set to the operating condition of the circuit breaker.

Also, for example, various commands from the monitoring command center 13 for emergency operations such as operating the a-breaker 40 and the c-breaker 42 of the power supply to allocate the generator X30 to the power supply of the system A. Can be done by That is, the case where “the power supplied from the power transmission system to the non-power transmission system satisfies the lower limit condition of the power received from the power company” is set as the switching unit operating condition, and the generator X30
Is disconnected from the system A, and when this condition is not satisfied, that is, when the lower limit condition is not satisfied, the a circuit breaker 40 and the c circuit breaker 42 of the power supply are operated as an emergency operation. The operation of connecting the generator X30 to the system A can also be performed.

As described above, the monitoring command center 13
As in the control of the system A, the safe and stable supply of electric power can be realized, and the cost merit of both the electric power supplier and the consumer can be maximized. Further, when the g circuit breaker 46 is opened, the frequency constant control is performed in the system B, so that damage to the devices can be suppressed. Further, depending on the scale of the system B, high-speed control becomes possible, and the It can be expected that the receiving balance will be restored. In the above description, the constant frequency control is not performed during the cooperation. However, the frequency constant control may be performed during the cooperation to improve the accuracy of the reception balance control in the system B.

[Control of Non-Consigned Transmission System C] Next, control of the non-consigned transmission system C will be described. About system C, system C
Power is centralized, and multiple generators are installed in one place to control output. Further, the grid C is, similarly to the grid B, a power grid X of the power company.
Works with

In the system C configured as described above, the schedule calculation for load balancing, supply and demand balance control, power flow control, various protection controls, and the like are the same as those of the system B in content, but the output of the generator Control is performed at one power supply location. In addition, when the power supply is concentrated in one place as described above, more detailed power supply operation can be performed. For example, it is possible to optimize the operation focusing on the efficiency (or fuel consumption characteristics) of each power supply, and it is possible to operate the system with high energy efficiency, that is, with excellent environmental conservation.

Accordingly, the control of the system C by the monitoring command center 13 allows the
It is possible to realize a safe and stable supply of electric power, and to maximize the cost merit for both electric power suppliers and consumers.

[Configuration Example of Power Supply System] FIG.
FIG. 2 is a conceptual diagram illustrating an outline of a configuration example of a power supply system according to the embodiment illustrated in FIG. 1. As shown in FIG. 11, the demand areas 301 and 302 are configured to receive power supply from the power suppliers 303 and 304 via the non-commissioned power transmission line 305, and are not connected to the power company transmission network 302. . That is, when the demand areas 301 and 302 are close to the power suppliers 303 and 304, for example, the non-entrusted power transmission line 30 is not used without using the power company transmission network (entrusted transmission network) 306.
5 can be realized.

Further, one power supplier 303 is connected to only the non-committed power line 305, while the other power supplier 304 is connected to the non-committed power line 305 and the power company transmission network 30.
6 are connected to both. In the figure, reference numeral 307 denotes a middle supply (central power supply command center) for monitoring and controlling the load of the power company transmission network 306 at the center. Then, the monitoring command center 13 communicates with the demand areas 301 and 302 and the power suppliers 303 and 302 via the Internet and / or the intranet, or both of them (hereinafter, expressed in a unified manner on the Internet) 308.
It is connected to 304 and to the middle supply 307.

In the figure, reference numeral 309 denotes demand areas 301, 3
02 and the power suppliers 303 and 304
5 and a switch for connection to the power company transmission network 306. The power suppliers 303 and 304 in this case are, specifically, various types of distributed power sources such as private power generation, cogeneration, fuel cells, wind power, and small-scale hydro power. In addition, demand areas 301 and 3
Numeral 02 denotes a factory or a building without a power generation facility, a nearby commercial area, an industrial park, an emerging residential area, and the like.

In this power supply system, the monitoring command center 13 centrally monitors and controls the power suppliers 303 and 304, the consumers in the demand areas 301 and 302, and the load of the power company transmission network 306 via the Internet 308. A signal is transmitted / received to / from the middle supply 307 to control the stable supply of the load on the non-committed power transmission line 305, including the operation of the switch of the non-committed power transmission line 305. Such a monitoring command center 13 may be installed in the electric power suppliers 303 and 304, but may be installed in the demand areas 301 and 302, or
A specific installation location is appropriately selected, for example, it can be independently installed in a nearby location.

[Connection Example of Centralized Monitoring and Control System] FIG.
11 is a conceptual diagram showing an outline of a connection example of a centralized monitoring control system of a monitoring command center 13 in the power supply system of FIG. Non-consigned power suppliers 303 and 304
A power generation facility 311 and a control device D for monitoring the operation thereof
CS312, and an uncommitted power line 305
The power supplier 304 connected to both the power company and the power company transmission network 306 has a switchgear 313.

The monitoring command center 13 is provided with a centralized monitoring and control device 314,
08, DC of the power providers 303 and 304 that are not
It is connected to S312. This centralized monitoring and control device 31
4 also has each demand area 3 via the Internet 308.
01 and 302, and is also connected to a switch 309 and a middle supply 307 of a power company.

According to this centralized monitoring and control system, the centralized monitoring and control device 314 of the monitoring command center 13
Centralized operation of the power generation facility 311 can be realized via the CS 312. Thereby, unmanned operation of the operator of each power generation facility 311 can be realized. In addition to receiving information from the central company 307 of the electric power company via the Internet 308, it controls the load devices of each customer in the demand areas 301 and 302,
In addition, by operating the switch 309, an appropriate operation for stable supply of non-committed power can be performed.

[Layout example of non-committed power line] FIGS. 13 to 15
FIG. 4 is an explanatory diagram showing various examples of laying of the non-committed power line 401. Since the electric power supplier and the demand area are often close to each other, the most suitable method from the geographical point of view is to be adopted for laying the non-commissioned power line. Hereinafter, those cases will be described.

FIG. 13A is a conceptual diagram showing a state in which a non-committed power transmission line 401 is laid in a railway facility. As shown in this figure, for example, it is conceivable to provide a gutter in an empty space of a side road of a railway (including electric railway), or to lay a suitable power transmission line laying area. Since the railroad tracks cover the entire area, it is possible to realize a non-consigned power transmission line 401 that is geographically useful by using railroad facilities. FIG. 13B is a conceptual diagram showing a state in which an unreliable power transmission line 401 is laid in a subway facility. As shown in this figure, for example, it is conceivable to lay a non-committed power transmission line 401 on the upper part of the side wall of a subway.
Similar to the railway, the subway also covers the suburbs from the city center to the suburbs. Therefore, a non-consigned power transmission line 401 that is geographically useful can be realized using the facilities of the subway.

FIG. 14A is a conceptual diagram showing a state in which an unreliable power transmission line 401 is laid in such a manner that it is installed alongside a water supply / city gas line. Water and city gas lines are laid underground in commercial and residential areas.
A non-contracted power transmission line 401 that is geographically useful can be realized using a city gas line. FIG. 14B is a conceptual diagram showing a state in which the non-contract power transmission line 401 is laid in the sewer. As shown in this figure, for example, it is conceivable to lay a power transmission line on the upper part of the side wall of the sewer pipe. Like the water supply and city gas lines, the sewage is laid underground in commercial areas, residential areas, and the like, so that the geographically useful non-contracted power transmission line 401 can be realized using the sewage.

FIG. 15A is a conceptual diagram showing a state in which a non-committed power transmission line 401 is laid under a large depth underground. Underground such as land and roads owned by others, under 30 meters or less, can be laid as a deep underground by anyone other than the owner. And the non-commissioned power line 4 using the deep underground
01 can be easily realized between the power suppliers and the demand regions in the industrial zone. (B) of FIG.
It is a conceptual diagram which shows the state which laid 01. Since undersea cables are widely laid for communication lines and the like, it is conceivable to use the seabed for the non-committed power line 401 as well.

When laying the actual non-commissioned power line,
Various transmission line construction method information as shown in FIGS. 13 to 15 is stored in advance together with the construction cost, and the transmission line construction is performed by using the information in accordance with the procedure shown in FIG. That is, a possible construction method is extracted from transmission line construction method information based on geographical information (such as direct access to the shore) where the power generation facility of the power supplier or the load of the customer is located (S1601). When there are a plurality of extracted construction methods (YES in S1602), one construction method is selected based on the construction cost (S1603), and when there is one extracted construction method (NO in S1602), One of the construction methods is directly selected (S1604),
Perform transmission line construction according to the selected construction method (S160
5). According to this procedure, an appropriate construction method can be selected based on the geographical conditions where the power generation facilities of the power supplier and the loads of the consumers are located, and transmission line construction can be performed efficiently.

[Other Functions of the Monitoring Command Center] In the above description, the basic function of the monitoring command center is to optimize the power supplier in consideration of economy for the purpose of maintaining the power quality of the non-consigned transmission system. Calculation of the optimal power generation schedule and its guide, calculation of the optimal power receiving schedule of the customer in consideration of economy, and the function for stabilizing the guide system (operation schedule calculation, real-time control for load balancing, etc.) However, it is naturally necessary to monitor the power flow of the non-consignment transmission system, protect the system, and control the system switching. In addition, it is necessary to control the system in a single system, the power supply of the system, or the abnormality of the customer.

In order to perform such a function, the monitoring command center collects the operation history data through a network for the customer and the power supply (power supplier), saves and manages the data, and saves the original data to the optimal calculation. The use as. In addition to services related to power generation and power reception, the monitoring command center can also provide, for example, the following various services to users (customers and power sources) of the non-consignment transmission system.・ Support for maintenance plan of power supply and customer's power receiving equipment ・ Price-related services such as power supply and customer power charge calculation, payment agency, etc. ・ Power plant operation agency (including remote operation), maintenance agency

[Effects of the First Embodiment] As described above, according to the present embodiment, the following effects can be obtained. (1) By supplying inexpensive power from the non-contracted power transmission system, power can be supplied economically and in consideration of energy saving. (2) The power supply can be operated with an optimal power generation schedule for a plurality of systems that satisfy conditions such as minimum energy and maximum power selling cost. (3) It is possible for a customer to operate on an optimal power reception schedule from a plurality of systems that satisfy conditions such as minimum energy consumption and minimum power purchase cost. Therefore, by the power system monitoring control according to various unconsigned power systems,
It is possible to supply stable power with high energy saving efficiency, which is cost-effective for consumers and power supply users.

[Second Embodiment] FIG. 17 shows a second embodiment according to the present invention in which an operator of an unconsigned power transmission system, for example, a monitoring command center in the first embodiment described above, transmits the unconsigned transmission line. It is a flowchart which shows the processing procedure from a contract to the charge at the time of system operation | use, when contracting collectively with an electric power company on behalf of the electric power supplier or consumer in an electric power system.

As shown in FIG. 17, the monitoring command center first stores contract power information of each customer that has been input (S1701), and uses at least the stored contract power information of each customer. The contract power with the power company is calculated (S1702), and a contract is concluded with the power company based on the calculated contract power (S1703). Then, in the system operation after the conclusion of the contract, the power data relating to the supply from the power company, the power data relating to the supply of the power supplier, and the power data relating to the consumption of each customer are stored (S17).
04).

In this system operation, every time a fixed period (for example, one month) elapses (YES in S1705),
A fee is paid to the electric power company based on the electric power data of the electric power company (S1706). Further, each electric power company pays based on the stored electric power data of the electric power company, the electric power supplier, and the electric power customer. The charge to be calculated is calculated (S170
7), the calculated fee is charged to each customer (S1708). During system operation, such S170
The series of processing from 4 to S1708 is repeated, and the fee payment and the billing are periodically performed.

According to this procedure, when the non-consigned power system is connected to the power transmission system of the power company and receives power supply from the power company, the consumers and power suppliers connected to the non-contracted power system are The supervision and control center, which is the operator of the non-consigned power system, does not need to make a contract with the power company separately, and on behalf of those consumers and power suppliers, You can make a collective contract. Then, based on the power data relating to the supply from the power company, the monitoring command center pays the power usage fee in the non-consigned power transmission system to the power company in a lump sum and relates to the power company, the customer, and the power supplier. A fee can be charged to each customer based on each power data. Therefore, from the customer's point of view, while receiving power from both the non-consigned power grid and the
With regard to the power usage fee, only the lump sum is paid to the monitoring command center in accordance with the total amount of power consumed, and the fee settlement is simplified.

[Overview of Third to Fifth Embodiments] In the first embodiment described above, from the viewpoint of simplifying the description,
Although it has been described that the power system of the power generation facility or the power company as the power supply source and each load of the customer as the power supply destination are associated in advance, in actual system operation, Based on the required power stability determined according to the function and use of each load, the power supply source or the power system used for power transmission and the load that is the power supply destination are sequentially associated with each other when necessary. . Hereinafter, a plurality of specific procedures from the correspondence between the supply source or the system and the load to the power supply to the load in such a case will be sequentially described as third to fifth embodiments according to the present invention. .

[Third Embodiment] FIG. 18 is a flowchart showing a power supply procedure as a third embodiment according to the present invention, with particular emphasis on the viewpoint of the customer. FIG.
FIG. 19 is a block diagram illustrating a configuration example of an electric power company, an electric power consumer, a load thereof, and the like, which are targets of the procedure in FIG. 18. In FIG. 19, from the viewpoint of simplifying the description, two electric power companies 501 and 502, one electric power consumer 503,
And only its four loads 504-507 are shown. With respect to the configuration of FIG. 19, the procedure until power is supplied to the loads 504 to 507 is as follows.

As shown in FIG. 18, first, a plurality of loads 5
04 to 507 are classified by function or use (S180
1) The required power stability is determined for each function or application (S1802). Here, for example, two loads 50
4,505 are manufacturing equipment, and the remaining two loads 50
Assume that 6,507 is an office light. In this case, the two loads 504 and 505, which are manufacturing devices, determine that the required stability is high, and the remaining two loads 506, 507, which are office lights, determine that the required stability is low.

Next, the loads 504 and 50 having high required stability are set.
For 5 (YES in S1803), the power supplier 501 that supplies power satisfying the high required stability is selected (S1803).
1804) For the loads 506 and 507 with low required stability (NO in S1803), the power provider 502 that supplies power satisfying the low required stability is selected (S180).
5). Here, for example, the power company 501 is a power company, and the power company 502 has a private power generation facility,
It is assumed that the factory supplies the surplus power to non-commissioned power.

Then, the electric power of each of the electric power providers 501 and 502 selected in this way is transferred to the load 504 for each function or application.
To 507 (S1806). That is, as shown in the lower part of FIG. 19, power from a power company 501 as a power company is supplied to loads 504 and 505 as manufacturing equipment via a system 508, while a power plant having a private power generation facility supplies power. Electricity from a certain electric power company 502 is transferred to a load 50 which is an office light via a grid 509.
6,507.

That is, in the example of FIG. 19, with respect to manufacturing equipment having a high required stability, an electric power company such as a power company supplies electric power satisfying the high required stability and an office having a relatively low required stability. For electric lamps, power utilities such as factories with in-house power generation facilities
Electric power that satisfies relatively low required stability is supplied. As described above, according to the procedure illustrated in FIG. 18, it is possible to reliably supply a plurality of loads with power that satisfies the required power stability according to the function and use. Therefore, especially from the viewpoint of the consumer, a stable power supply can be received according to the required power stability.

[Fourth Embodiment] FIG. 20 is a flowchart showing a power supply procedure as a fourth embodiment according to the present invention, in which a particular emphasis is placed on the position of a non-contract power transmission company.
FIG. 21 is a block diagram illustrating a configuration example of a power generation facility, a non-contracted power transmission system, a power consumer, and a load thereof, which are targets of the procedure in FIG. In FIG. 21, only one power generation facility 511, one non-contracted power transmission system 512, one power consumer 513, and four loads 514 to 517 thereof are shown from the viewpoint of simplifying the description. With respect to the configuration of FIG.
The procedure until power is supplied to 4,515 is as follows.

As shown in FIG. 20, first, the power consumer 5
Thirteenth function or application-specific load information and power requirement stability information for each function or application are input (S200).
1). Here, for example, the two loads 514 and 515 are office lights having relatively low required stability, and the remaining two loads 514 and 515 are used.
It is assumed that the two loads 516 and 517 are manufacturing equipment having relatively high required stability. In this case, two loads 514, 5
15, load information “office lamp” and required stability information “low” are input, and the remaining two loads 5
For 16, 517, load information “manufacturing equipment” and required stability information “high” are input.

Next, based on the input load information and the required stability information, a search is made for a load that satisfies a supply destination condition for supplying power from the power generation facility 511 via the non-contracted power transmission system 512 (S2002). . Here, for example, it is assumed that the power generation equipment 511 is a private power generation equipment of a factory and supplies only its surplus power via the non-committed power transmission system 512. The supply destination condition in this case is, for example, “a load having a relatively low required stability, such as an electric light”. When there is a load that satisfies the supply destination condition (Y in S2003)
ES), the load is selected (S2004), and power is supplied to the selected load (S2005). In this example, since the two loads 514 and 515 satisfy the supply destination condition, the power is supplied to the loads 514 and 515 from the power generation facility 511 via the non-committed power 512.

As described above, according to the procedure shown in FIG.
Based on the required power stability of each load, a load to be supplied can be selected, and power can be reliably supplied to the selected load. Therefore, particularly from the standpoint of a non-contract power transmission company, efficient power supply to an appropriate supply destination can be realized.

[Fifth Embodiment] FIG. 22 is a flow chart showing a power supply procedure when a load is grouped according to a required stability level and power is supplied by another system, as a fifth embodiment according to the present invention. FIG. 23 is a block diagram showing a configuration example of a power generation facility, a non-contracted power transmission system, a power consumer, and a load thereof, which are targets of the procedure in FIG. In FIG. 23, from the viewpoint of simplifying the description,
Two power generation facilities 521, 522, two non-contract power transmission systems 523, 524, and a power system 526 of a power company connected to the system 524 via a link line 525, one power consumer 527, and four loads thereof Only 528-531 are shown. With respect to the configuration of FIG.
The procedure up to the supply of power to ５３531 is as follows.

As shown in FIG. 22, first, the power consumer 5
27, load information for each function or application and required power stability information for each function or application are input (S220).
1). Here, for example, the two loads 528 and 529 are office lights having relatively low required stability, and the remaining two loads 528 and 529 are used.
It is assumed that two loads 530 and 531 are manufacturing equipment having relatively high required stability. In this case, two loads 528, 5
29, the load information “office lamp” and the required stability information “low” are input, and the remaining two loads 5
For 30, 301, load information “manufacturing equipment” and required stability information “high” are input.

Next, the loads 528 to 531 are grouped based on the input load information and the required stability information (S2).
202). As described above, here, the two loads 52
8, 529 is an office lamp having a relatively low required stability, and the remaining two loads 530, 531 are manufacturing equipment having a relatively high required stability. The loads 528 and 529 are set as a group 541 having a low required stability, and the loads 530 and 531 are set as a group 542 having a high required stability.

Subsequently, a group 542 having a high required stability level
(YES in S2203), the non-committed power transmission system 524 for power supply satisfying the high required stability is selected (S2203).
2204), for the group 541 with low required stability (NO in S2203), the non-committed power transmission system 523 for power supply that satisfies the low required stability is selected (S220).
5). Here, for example, it is assumed that one of the power generation facilities 521 is a private power generation facility of a factory and supplies only the surplus power through the non-commissioned power transmission system 523. It is assumed that the power generation equipment is dedicated to non-consignment power supply. In this case, one of the power generation facilities 5
The power supplied from 21 satisfies the low required stability, while the power supplied from the other power generation facility 522 satisfies the high required stability. Further, since the non-commissioned power transmission system 524 is connected to the power system 526 of the power company by the cooperation line 525, it is also possible to supply power from the power system 526 of the power company.

Then, each of the groups 541 and 54 is connected via the non-committed power transmission system 523 and 524 thus selected.
Power is supplied to each of the second load (S2206). That is, as shown in the lower part of FIG.
21 is supplied to the loads 528 and 529 of the group 541 having low required stability via the non-committed power transmission system 523, and the power from the power generation equipment 522 dedicated to the non-committed power supply is supplied to the non-committed power system 524. The load is supplied to the loads 530 and 531 of the group 542 having a high required stability.

According to this procedure, the loads can be divided into groups based on the required power stability of each load, and the power can be supplied to each group via the non-contract power transmission system for each group. Therefore, from the viewpoint of the customer, it is possible to receive a stable power supply in accordance with the required stability of the power, and from the viewpoint of the non-consigned power company, the efficiency of the appropriate Power supply can be realized.

In particular, in the example shown in FIG. 23, the non-commissioned power transmission system 524 connecting the load of the group 542 having a high required stability.
Can be connected to the power system 526 of the power company. In this case, the load of the group 542 having a high required stability receives the power supply from the power system 526 of the power company even if the stable power supply from the power generation equipment 522 in the non-commissioned power system cannot be received. Because you can
As a result, stable power supply can always be received.

[Other Embodiments] The present invention is not limited to the above-described embodiments, and various other embodiments can be implemented within the scope of the present invention. For example, the following forms are conceivable. (1) In the above embodiment, the monitoring command center is centralized and independently installed. Instead of providing the monitoring command center independently, a power supply / demand balance control function is provided for a certain power supply. May be provided for each user, or may be configured to be distributed for each function. (2) The communication line between the monitoring command center, the consumer and the power supply may be a public line, the Internet, or an intranet, and the type is not limited. (3) The functions of the supervisory command center are not limited to the conventional mid-sales function of the electric power company. Various management functions (operations such as charge calculation, charge collection, automatic debit, etc.) performed by the electric power company, as well as power suppliers and demand It is conceivable that the maintenance service of the power supplier based on the operation history data of the house, the operation of the power supplier on behalf of the power supplier, the operation of the power receiving operation of the customer, and the planning of equipment renewal can be performed. In this case, the monitoring command center has an information interface for realizing those functions with a power company, a financial institution such as a bank, or the like.

[0117]

As described above, according to the present invention,
The non-consigned power system can be connected to the consigned power system of the electric power company. By properly setting the operating conditions for the connection between the power supply and the load, it is possible to realize safe and optimal operation of the non-contracted power transmission system according to the situation, so that stable power is supplied from the power supplier to the consumer. Can be supplied. In addition, high economic efficiency and energy saving efficiency can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a power supply system according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of a series of processes from a schedule optimal calculation and guide output by a monitoring command center shown in FIG. 1 to real-time control of a system A;

FIG. 3 is a block diagram showing a specific connection configuration and a signal flow when a monitoring command center performs real-time power supply-demand balance control and frequency control in a system A shown in FIG. 1;

FIG. 4 is a control block diagram showing a configuration of a supply and demand balance control unit and a constant frequency control unit and a flow of signals when a monitoring command center performs real-time supply and demand balance control and constant frequency control of system A shown in FIG. 1;

FIG. 5 is a flowchart showing a flow of real-time control processing of a system A in the monitoring command center shown in FIG. 1;

FIG. 6 is a flowchart showing a subroutine of a supply and demand balance control process in FIG. 5;

FIG. 7 is a flowchart showing a subroutine of constant frequency control processing in FIG. 5;

FIG. 8 is a block diagram showing a specific connection configuration and a signal flow when a monitoring command center performs real-time power supply and demand balance control and frequency control in system B shown in FIG. 1;

9 is a control block diagram showing the configuration of a supply and demand balance control unit and a constant frequency control unit and a flow of signals when a monitoring command center performs real-time supply and demand balance control and constant frequency control of system B shown in FIG. 1;

10 is a diagram showing a system B in the monitoring command center shown in FIG.
9 is a flowchart showing the flow of real-time control processing of FIG.

FIG. 11 is a conceptual diagram showing an outline of a configuration example of the power supply system shown in FIG. 1;

FIG. 12 is a conceptual diagram showing an outline of a connection example of a centralized monitoring and control system of a monitoring command center 13 in the power supply system of FIG. 11;

13A is a conceptual diagram illustrating a state where an uncontracted power transmission line is laid in a railway facility, and FIG. 13B is a conceptual diagram illustrating a state where an uncontracted power transmission line is laid in a subway facility.

FIG. 14 (A) is a conceptual diagram showing a state in which a non-commissioned power transmission line is laid along with a water supply / city gas line,
(B) is a conceptual diagram showing a state where an unconsigned power transmission line is laid in a sewer.

15A is a conceptual diagram illustrating a state where an uncontracted power transmission line is laid under a large depth underground, and FIG. 15B is a conceptual diagram illustrating a state where an uncontracted transmission line is laid on the sea floor.

FIG. 16 is a flowchart showing a procedure for selecting a transmission line construction method and performing transmission line construction according to the selected construction method.

FIG. 17 is a flowchart showing a processing procedure from a contract with an electric power company to charging during system operation as a second embodiment according to the present invention.

FIG. 18 is a flowchart showing a power supply procedure emphasizing a viewpoint of a customer as a third embodiment according to the present invention.

FIG. 19 is a block diagram showing a configuration example of an electric power company, an electric power consumer, a load thereof, and the like which are targets of the procedure in FIG. 18;

FIG. 20 is a flowchart showing a power supply procedure emphasizing a standpoint of an unentrusted power transmission company as a fourth embodiment according to the present invention.

21 is a block diagram showing a configuration example of a power generation facility, a non-contracted power transmission system, a power consumer, and a load thereof, which are targets of the procedure in FIG. 20;

FIG. 22 is a flowchart showing a power supply procedure in a case where loads are grouped according to a required stability level and power is supplied by another system, as a fifth embodiment according to the present invention.

23 is a block diagram showing a configuration example of a power generation facility, a non-contracted power transmission system, a power consumer, and a load thereof, which are targets of the procedure in FIG. 22.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric power system 2-5 ... Non-consignment transmission system 11 ... Electric power supplier 12 ... Electric power consumer 13 ... Monitoring command center 14, 15 ... Cooperation line 16 ... Communication line 21, 22 ... Various data 30, 31 ... Generator 40- 46: Circuit breaker 50: Supply and demand totalizer 51, 53, 54 Proportional gain 52: Integrator 55: Low value selector 56: Switch 100, 101 ... Power transmission amount 102, 103 ... Power reception amount 104 ... Frequency 105 ... Output command 106 ... command 200 ... total deviation 201 ... supply and demand set value 202 ... supply and demand deviation 203 ... output command value 210 ... frequency set value 211 ... frequency deviation 212 ... correction control command value 301, 302 ... demand area 303, 304 ... electric power supplier 305 ... Non-contracted power transmission line 306… Power company transmission network 307… Middle supply (Central power supply dispatch office) 308… Internet 309… Switch 311… Power generation Equipment 312 DCS 313 Switching equipment 314 Centralized monitoring and control device 401 Non-contracted power transmission line 501, 502 Power provider 503, 513, 527 Power consumers 504-507, 514-517, 528-531 ... Load 508, 509: System 511, 521, 522: Power generation facilities 512, 523, 524: Non-contract power transmission system 525: Cooperation line 526: Power system of power company

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akimoto Kamiya 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu Office (72) Inventor Toshiki Furukawa 1-1-1, Shibaura, Minato-ku, Tokyo Toshiba Corporation In the head office (72) Inventor Yuji Hoshino 1-1-1, Shibaura, Minato-ku, Tokyo Toshiba Corporation Head office (72) Inventor Kaiichiro Hirayama 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Fuchu Plant ( 72) Inventor Toshio Fujiwara 1 Toshiba-cho, Fuchu-shi, Tokyo Tokyo, Japan Inside the Fuchu Office of Toshiba Corporation (72) Inventor Takenori Kobayashi 1-Toshiba-cho, Fuchu-shi, Tokyo, Tokyo Inside the Fuchu office of Toshiba Corporation F-term (reference) 5B049 AA06 EE31 5G064 AC06 AC09 CB10 CB11 DA03 5G066 AA05 AA20 AE07 AE09

Claims (15)

[Claims] 1. A power supply method for connecting a power generation facility of a power supplier and a load of a customer via a non-commissioned power system and supplying power to the customer, wherein the non-committed power system comprises a switching system. Means for opening and closing the opening / closing means based on at least the power receiving condition from the power company. The power data flowing between the power transmission system and the power transmission system is input, and it is determined whether the operating condition of the switching means is satisfied using the power data. When the operating condition of the switching means is satisfied, the opening / closing means is opened. A power supply method characterized by: 2. A power supply method for connecting a power generation facility of a power supplier and a load of a consumer via a non-commissioned power system and supplying power to the customer, wherein the non-committed power system includes a switching system. Means for connecting to the power transmission system of the power company through the means, and creating an operating condition of the opening and closing means for opening the opening and closing means, until at least the operating condition of the opening and closing means is satisfied, at least the supply and demand balance in the non-entrusted power system. A power supply method, comprising: performing control; and when the operating condition of the opening / closing means is satisfied, opening the opening / closing means and executing at least the supply / demand balance control and frequency stabilization control. 3. A power supply method for connecting a power generation facility of a power supplier and a load of a consumer via a non-commissioned power system to supply power to the customer, wherein the non-committed power system is a power company. And the power generating equipment can be connected to the non-consigned power transmission system through individual opening / closing means for each power supplier or each power generating facility, and at least a lower limit value of power received from a power company. Create a switch operating condition for opening the switch based on the condition, set a priority order for operating the corresponding switch for each power supplier or each power generation facility, Power data flowing between the non-committed power system is input, and it is determined whether or not the switching means operating condition is satisfied using the power data. Power supply wherein said switching means operating conditions in accordance with the priority to the individual switching means until satisfied in the open. 4. A power supply method for connecting a power generation facility of a power supplier and a load of a consumer via a non-commissioned power system to supply power to the customer, wherein the non-committed power system is a power company. And the load can be connected to the non-contracted power system through individual switching means for each customer or each load, and at least the upper limit condition of the power received from the power company is satisfied. And to create a switching means operating condition to open the switching means, for each customer or for each load, determine the priority order to operate the corresponding switching means, the committed power system and the non-committed power system The power data flowing between the input and output are input, and it is determined whether or not the operating condition of the opening / closing means is satisfied using the power data. Power supply method, characterized in that the switching means operating conditions are the individual switching means until satisfied in the open. 5. The power supply method according to claim 1, wherein transmission line construction method information for the transmission line of the non-committed power transmission system is stored in advance together with a construction cost, and Based on the geographic information where the load of the power generation facility or the consumer is located, the possible construction method is extracted from the transmission line construction method information, and when there are a plurality of extracted construction methods, the construction cost is also reduced. And select one construction method,
A power supply method characterized in that when there is only one extracted construction method, the construction method is selected, and transmission line construction is performed according to the selected construction method. 6. A power supply method for supplying electric power from a plurality of electric power companies to a plurality of loads, wherein the plurality of loads are divided according to function or application, and the required stability of electric power is determined for each function or application. And a power supply method for supplying power satisfying the required stability to a load according to the function or application. 7. A power supply method for connecting a power generation facility of a power supplier and a load of a customer via a non-consigned power transmission system and supplying power to the customer, comprising: A power supply for selecting a load to be supplied with electric power based on the load information and the required stability information of electric power for each function or application, and supplying electric power to a load for each selected function or application. Supply method. 8. A power supply method for connecting a power generation facility of a power supplier and a load of the customer via a non-consigned power system and supplying power to the customer, wherein at least a function or a use of the customer is provided. The load to be supplied with power is divided into groups based on the load information and the required stability information for each function or application, and the non-consigned power system is divided and supplied with power for each group. Supply method. 9. The power supply method according to claim 8, wherein, when the plurality of groups exist, at least one of the non-contracted power transmission systems based on the required power stability.
A power supply method characterized by being connectable to a power transmission system of a power company. 10. A power system control device for controlling a non-contracted power system for supplying power from a power generation facility of a power supplier to a load of a customer, comprising a switching unit with a grid system of a power company. Means for creating operating conditions for the opening / closing means for opening the opening / closing means; means for executing at least supply / demand balance control in the non-committed power transmission system until the operating conditions for the opening / closing means are satisfied; Means for outputting a command to open the opening / closing means when the operating condition is satisfied, and executing frequency stabilization control in addition to the supply / demand balance control. 11. An electric power company, configured to be connectable to a transmission power system, provided with individual opening / closing means for each power supplier or each power generation facility, and supplying power from the power generation facility of the power supplier to the load of the customer. What is claimed is: 1. A power system control device for controlling a non-contracted power supply system to be supplied, wherein at least a switching device operating condition for opening the switching device is created based on a lower limit condition of power received from a power company. And, for each power supplier or for each power generation facility, means for determining the priority order to operate the corresponding switching means, and means for inputting power data flowing between the committed power system and the non-committed power system, Means for determining whether or not the open / close means operating condition is satisfied using the power data; and, when the open / close means operating condition is satisfied, the open / close means operates according to the priority order. Conditions the power system control apparatus characterized by comprising: means for outputting a command to open the individual switching means until satisfied, the. 12. An electric power company, configured to be connectable to a transmission power system, provided with individual opening / closing means for each customer or each load, and supplying power from a power generation facility of a power supplier to a load of the customer. A power system control device for controlling a non-committed power system, a means for creating an open / close means operating condition for opening the open / close means based on at least an upper limit condition of power received from a power company, For each customer or for each load, means for determining the priority order of operating the corresponding switching means, means for inputting power data flowing between the committed power system and the non-committed power system, and the power data Means for determining whether the operating condition of the opening / closing means is satisfied, and when the operating condition of the opening / closing means is satisfied, the operating condition of the opening / closing means is not satisfied according to the priority order. Power supply method characterized by comprising a means for outputting a command to open the individual switching means until the. 13. A computer-readable program for controlling a non-contracted power transmission system for supplying power from a power generation facility of a power supplier to a load of a customer, comprising switching means between the power transmission system and a power transmission system of a power company. A program for creating an open / close means operating condition for opening the open / close means; and a supply / demand balance at least in the non-consigned power transmission system until the open / close means operating condition is satisfied. The computer executes a process of executing control and a process of outputting a command to open the opening / closing unit when the operating condition of the opening / closing unit is satisfied and executing frequency stabilization control in addition to the supply / demand balance control. A storage medium characterized by being executed. 14. A power supply method for connecting a power generation facility of a power supplier and loads of a plurality of customers via a non-consigned power transmission system and supplying power to the customers, wherein the demand schedule of the loads is Based on power data including at least the power generation capacity in the non-consigned power system,
Calculating the power generation schedule for each power generation facility and the power reception schedule for each customer; guiding the calculated power generation schedule to each power generation facility via a communication line; and transmitting the calculated power reception schedule to a communication line. And a step of guiding output to each customer via the power generation schedule, during output operation of each power generation facility based on the power generation schedule, in order to balance the supply and demand in the non-consigned power system, via a communication line to each power generation facility Providing an output command in real time by using the power supply method. 15. A power supply method for connecting a power generation facility of a power supplier and loads of a plurality of customers via a non-commissioned power system and supplying power to the customers, wherein the non-committed power system comprises: Connecting to the power transmission system of the power company and storing the input contract power information of each customer; and contracting with the power company using at least the stored contract power information of each customer. Calculating power, concluding a contract with a power company based on the calculated contract power, storing the power data related to the supply from the power company after concluding the contract, the power supply Storing power data pertaining to the supply of power, storing the power data pertaining to the consumption of each consumer, paying a fee to a power company based on the power data of the power company, and storing the data. do it A power company, a power supplier, and a step of calculating a fee to be paid by each customer based on each power data of the customer; anda step of charging the calculated fee to each customer. And a power supply method comprising: