JP5979851B2 - Electricity supply and demand adjustment device - Google Patents

Electricity supply and demand adjustment device Download PDF

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JP5979851B2
JP5979851B2 JP2011263896A JP2011263896A JP5979851B2 JP 5979851 B2 JP5979851 B2 JP 5979851B2 JP 2011263896 A JP2011263896 A JP 2011263896A JP 2011263896 A JP2011263896 A JP 2011263896A JP 5979851 B2 JP5979851 B2 JP 5979851B2
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明則 宮本
明則 宮本
久保田　泰基
泰基 久保田
泰嗣 大澤
泰嗣 大澤
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Osaka Gas Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation

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Description

本発明は、発電電力を電力系統に供給可能な発電設備を有する電力供給者と、電力消費設備と自家発電設備とを有し、電力消費設備による消費電力から自家発電設備による発電電力を減算して導出される不足電力を電力系統からの受電電力で賄うように構成される複数の電力需要者との間での電力の需給を調整する電力需給調整装置に関する。   The present invention includes a power supplier having a power generation facility capable of supplying generated power to a power system, a power consumption facility and a private power generation facility, and subtracts the power generated by the private power generation facility from the power consumption by the power consumption facility. The present invention relates to an electric power supply and demand adjustment device that adjusts the supply and demand of electric power among a plurality of electric power consumers configured to cover the insufficient electric power derived by the received electric power from the electric power system.

特定規模電気事業者などの電力供給者は、電力需要者へ電力を供給するために、自身が備える発電設備から電力を供給するか又は他者から電力を調達する必要がある。また、電力需要者は、自身が消費する電力を発電するための自家発電設備を設置することもできる。自家発電設備を設置した場合、電力需要者は、電力供給者から購入する電力を削減できるため、電力コストを低く抑えることができる。   In order to supply electric power to electric power consumers, an electric power supplier such as a specific-scale electric power supplier needs to supply electric power from a power generation facility provided therein or procure electric power from others. Moreover, the electric power consumer can install the private power generation equipment for generating the electric power which he consumes. When the private power generation facility is installed, the power consumer can reduce the power purchased from the power supplier, and thus the power cost can be kept low.

尚、電力需要者が備える自家発電設備が故障などの事故により計画外で運転停止した場合又は出力が減少した場合、電力需要者は、代わりの電力を電力供給者から購入することになる。つまり、電力供給者は、電力需要者の自家発電設備が事故により停止等した場合を想定して、通常は供給しない発電電力を予備力として備えておくことが必要である。加えて、電力供給者は、上述したような予備力のコストを電力需要者から回収するため、自家発電設備を備える電力需要者との間で自家発補給契約を結んでそのコストの少なくとも一部を電力需要者側へ転換することが一般的である。つまり、電力需要者側からすると、自家発電設備を設置することで電力コストを削減できるというメリットがあるものの、自家発補給契約の存在によってそのメリットが減じられることになっている。   In addition, when the private power generation equipment with which an electric power consumer is equipped stops operation outside a plan by accident, such as a failure, or when an output reduces, an electric power consumer will purchase alternative electric power from an electric power supplier. In other words, it is necessary for the power supplier to have, as a reserve power, power generation that is not normally supplied, assuming that the power generation facility of the power consumer is stopped due to an accident or the like. In addition, the power supplier collects at least a part of the cost by signing a self-supplied supply contract with the power consumer equipped with the private power generation facility in order to collect the reserve power cost as described above from the power consumer. Is generally converted to the power consumer side. In other words, from the power consumer side, although there is a merit that the power cost can be reduced by installing a private power generation facility, the merit is reduced by the existence of a self-supplied supply contract.

特許文献１には、電力供給者と電力需要者との間で自家発補給契約を結んだ上で、電力需要者の自家発補給契約によって発生するコストを最小化することを目的とした装置が記載されている。具体的には、特許文献１には、電力需要者が備える自家発電設備をメンテナンスのために計画的に運転停止する日として電力負荷の少ない日を選択すること、即ち、自家発補給契約に基づいて電力の補給を受ける必要のある日が電力負荷の少ない日となるようにすることが記載されている。   Patent Document 1 discloses an apparatus for minimizing the cost generated by a self-supply replenishment contract of a power consumer after a self-supply replenishment contract is concluded between the power supplier and the power consumer. Have been described. Specifically, in Patent Document 1, selecting a day with less power load as a day for systematically shutting down the private power generation facility provided by the power consumer for maintenance, that is, based on a self-supplied supply contract In other words, it is described that the day when it is necessary to receive the replenishment of power becomes the day when the power load is low.

特開２００４−７２８７１号公報JP 2004-72871 A

特許文献１に記載の装置は、あくまでも電力需要者側が自家発補給契約に基づいて補給を受ける電力を少なくしようと試みるものであり、電力供給者側で備える必要のある予備力の削減を可能とするものではない。例えば、特許文献１では、電力需要者の自家発電設備の計画的な運転停止時での補給電力のみが考慮されており、自家発電設備の事故などの計画外での運転停止に備えるためには、電力供給者側で備える必要のある予備力を削減することはできない。従って、特許文献１に記載の装置があったとしても、電力供給者は、これまで通りの予備力を備える必要があり、自家発電設備を備える電力需要者との間でこれまで通りの自家発補給契約を結ぶ必要があると想定される。   The device described in Patent Document 1 is intended to reduce the amount of power that the power consumer side receives replenishment based on the self-supplied replenishment contract, and can reduce the reserve power that must be provided on the power supplier side. Not what you want. For example, in Patent Document 1, only the supplementary power at the time of planned shutdown of a power consumer's private power generation facility is considered, and in order to prepare for an unplanned shutdown such as an accident of the private power generation facility Therefore, it is not possible to reduce the reserve capacity that needs to be provided on the power supplier side. Therefore, even if there is an apparatus described in Patent Document 1, the power supplier needs to have the same reserve power as before, and the power supply with the power generation equipment as before will be self-generated. It is assumed that a supply contract is required.

以上のように、従来技術は、電力供給者側で備える必要のある予備力の削減を可能にするものではないため、電力需要者側からすると、これまで通りの自家発補給契約の存在によって、自家発電設備を設置することによるメリットが減じられるという問題は残る。   As described above, since the conventional technology does not enable reduction of reserve power that needs to be provided on the power supplier side, from the power consumer side, due to the existence of a self-supplied supply contract as before, The problem remains that the benefits of installing private power generation facilities are reduced.

本発明は、上記の課題に鑑みてなされたものであり、その目的は、電力供給者側で備える必要のある予備力の削減を可能にするような電力の需給調整を行なえる電力需給調整装置を提供する点にある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a power supply / demand adjustment apparatus capable of adjusting power supply / demand so as to enable reduction of reserve power required on the power supplier side. Is to provide

上記目的を達成するための本発明に係る電力需給調整装置の特徴構成は、発電電力を電力系統に供給可能な発電設備を有する電力供給者と、電力消費設備と自家発電設備とを有し、前記電力消費設備による消費電力から前記自家発電設備による発電電力を減算して導出される不足電力を前記電力系統からの受電電力で賄う電力需要者との間での電力の需給を調整する電力需給調整装置であって、
前記自家発電設備の事故を検出する事故検出手段と、
前記事故検出手段が検出した事故により減少する、事故が発生した前記自家発電設備の発電電力を減少発電電力として導出する減少電力導出手段と、
前記減少発電電力を補給するために、前記電力供給者における前記発電設備による発電電力、及び、前記電力需要者における事故が未発生である前記自家発電設備による発電電力の両方を調整対象として、前記電力供給者における前記発電設備による発電電力の調整及び前記電力需要者における前記事故が未発生である前記自家発電設備による発電電力の調整の少なくとも何れか一方を行なわせる電力補給処理を行なう需給調整手段とを備え、
前記事故検出手段は、前記自家発電設備の発電電力が単位時間の間に予め設定された第１設定値以上減少し、且つ、当該自家発電設備が設けられている前記電力需要者の受電電力が同じ前記単位時間の間で予め設定された第２設定値以上増大したときは、当該自家発電設備で事故が発生したと判定する点にある。
本願明細書で「自家発電設備の事故」とは、『意図しない計画外の運転停止又は出力減少が引き起こされる事象』のことであり、自家発電設備の検査や補修などに伴う計画された運転停止又は出力減少とは別である。 The characteristic configuration of the power supply and demand adjustment apparatus according to the present invention for achieving the above object includes a power supplier having a power generation facility capable of supplying generated power to the power system, a power consumption facility, and a private power generation facility, Electricity supply and demand for adjusting the supply and demand of electric power to and from electric power consumers who cover the insufficient electric power derived by subtracting the electric power generated by the private power generation equipment from the electric power consumed by the electric power consumption equipment An adjustment device,
Accident detection means for detecting an accident of the private power generation facility;
Reduced power deriving means for deriving the generated power of the private power generation facility where the accident has occurred as a reduced generated power, which is reduced by the accident detected by the accident detecting means,
In order to replenish the reduced generation power, both the power generated by the power generation facility in the power supplier and the power generation by the private power generation facility in which no accident has occurred in the power consumer are subject to adjustment, It performs power supply processing for causing at least one of the power generation adjustment by that originating Denden force to equipment and adjustment of generated power the accident in the power consumer is by the private power generation facility is not occurred in the electric power supplier Supply and demand adjustment means,
In the accident detection means, the generated power of the private power generation facility decreases by a predetermined first set value or more during a unit time, and the received power of the power consumer provided with the private power generation facility is When it increases more than the preset second set value during the same unit time, it is determined that an accident has occurred in the private power generation facility .
In the specification of the present application, “accident of in-house power generation facility” refers to “an event that causes an unintended unplanned operation stop or output decrease”, and is a planned outage accompanying inspection or repair of the in-house power generation facility. Or it is different from the output reduction.

上記特徴構成によれば、事故検出手段が自家発電設備の事故を検出し、減少電力導出手段が事故により減少するその自家発電設備の発電電力（即ち、減少発電電力）を導出することで、自家発電設備の事故によってどの程度の電力補給が必要になるのかを把握することができる。そして、需給調整手段が、その減少発電電力を補給するために、電力供給者における発電設備による発電電力及び電力需要者における事故が未発生の自家発電設備による発電電力の両方を調整対象として、電力供給者の発電設備による発電電力の調整及び電力需要者の自家発電設備による発電電力の調整の少なくとも何れか一方を行なわせる電力補給処理を行なう。つまり、需給調整手段は、その減少発電電力の補給を行なうために、電力供給者が予め確保している予備力だけを利用するのではなく、電力需要者における事故が未発生の自家発電設備をも予備力として利用できる。従って、電力供給者が予め確保しておくべき予備力を小さくできるので、電力需要者側に転換されるコストを小さくすることができ、結果として、電力需要者が自家発電設備を設置することで得られるメリットが相対的に増加することにもつながる。
加えて、事故検出手段が、自家発電設備の発電電力の時間的な変化、及び、電力需要者の受電電力の時間的な変化を監視するので、自家発電設備に事故が発生した場合に現れる、自家発電設備の発電電力の急減且つ電力需要者の受電電力の急増を検出できる。 According to the above characteristic configuration, the accident detection means detects an accident of the private power generation facility, and the reduced power deriving means derives the generated power (that is, the reduced generated power) of the private power generation facility that is reduced due to the accident. It is possible to grasp how much power supply is required due to an accident at a power generation facility. Then, in order for the supply and demand adjustment means to replenish the reduced generation power, both the power generated by the power generation facility in the power supplier and the power generation by the private power generation facility in which no accident has occurred in the power consumer are adjusted. A power supply process is performed to adjust at least one of adjustment of power generated by the power generation facility of the supplier and adjustment of power generated by the private power generation facility of the power consumer. In other words, the supply and demand adjustment means does not use only the reserve power reserved in advance by the power supplier to replenish the reduced generated power, but uses a private power generation facility in which no accident has occurred in the power consumer. Can also be used as reserve power. Therefore, since the reserve power that the power supplier should secure in advance can be reduced, the cost to be converted to the power consumer side can be reduced, and as a result, the power consumer can install private power generation equipment. It also leads to a relative increase in the benefits obtained.
In addition, since the accident detection means monitors the temporal change of the generated power of the private power generation facility and the temporal change of the received power of the power consumer, it appears when an accident occurs in the private power generation facility. It is possible to detect a sudden decrease in power generated by a private power generation facility and a rapid increase in power received by a power consumer.

本発明に係る電力需給調整装置の別の特徴構成は、前記需給調整手段は、前記電力補給処理において、前記減少発電電力を補給するために前記電力供給者における前記発電設備及び前記電力需要者における前記事故が未発生である自家発電設備の発電電力を増大させるときのコスト増大量の合計が最小になるように、前記電力供給者における前記発電設備及び前記電力需要者における前記事故が未発生である自家発電設備の少なくとも何れか一方に対する発電電力の増大要求を決定して、当該発電電力の増大要求を、対応する前記電力供給者及び前記電力需要者に伝達する点にある。   Another characteristic configuration of the power supply and demand adjustment apparatus according to the present invention is that the supply and demand adjustment means includes the power generation facility in the power supplier and the power consumer in the power supply process to replenish the reduced generated power. The accident in the power supplier and the power consumer has not occurred so that the total amount of cost increase when increasing the generated power of the private power generation facility in which the accident has not occurred is minimized. It is the point which determines the increase request | requirement of the generated electric power with respect to at least any one of a certain private power generation equipment, and transmits the increase request | requirement of the said generated electric power to the said said electric power supplier and the said electric power consumer.

電力供給者の発電設備の発電電力を増大させることで電力系統への供給電力を増大させれば電力系統への電力の補給を行うことができ、及び、電力需要者における事故が未発生の自家発電設備の発電電力を増大させることで電力需要者による電力系統からの受電電力を減少させれば、本来は電力需要者が受電していたはずの電力が電力系統での余剰電力となり、見かけ上は電力需要者の自家発電設備がその余剰電力分を電力系統に補給したことになる。つまり、上記減少発電電力を補給するためには、電力供給者の発電設備の発電電力及び電力需要者の自家発電設備の発電電力を増大する方向に調整する必要があるため、発電設備及び自家発電設備での発電に伴うコストは増大する。
本特徴構成では、需給調整手段が、電力補給処理において、減少発電電力を補給するためのコスト増大量の合計が最小になるように電力供給者における発電設備及び電力需要者における事故が未発生の自家発電設備の少なくとも何れか一方に対する発電電力の増大要求を決定して、その発電電力の増大要求を、対応する電力供給者及び電力需要者に伝達するので、コストの増大を最小にしつつ減少発電電力を補給させることができる。 Increasing the power supplied to the power grid by increasing the power generated by the power generation facility of the power supplier can supply power to the power grid, and private accidents have not occurred in power consumers If the received power from the power grid by the power consumer is reduced by increasing the power generated by the power generation facility, the power that the power consumer should have received is the surplus power in the power grid, and apparently This means that the self-power generation facility of the power consumer has supplied the surplus power to the power system. That is, in order to replenish the reduced generation power, it is necessary to adjust the generation power of the power generation facility of the power supplier and the generation power of the private power generation facility of the power consumer. The costs associated with power generation at the facility increase.
In this feature configuration, in the power supply process, the power supply facility and the power customer have no accidents so that the total amount of cost increase for supplying reduced generated power is minimized. A request to increase the generated power for at least one of the private power generation facilities is determined and the increase request for the generated power is transmitted to the corresponding power supplier and power consumer, so that the power generation is reduced while minimizing the increase in cost. Electric power can be supplied.

本発明に係る電力需給調整装置の更に別の特徴構成は、前記需給調整手段は、前記電力補給処理において、少なくとも前記電力需要者における前記事故が未発生である自家発電設備による発電電力の調整を行なわせる点にある。   Still another characteristic configuration of the power supply and demand adjustment apparatus according to the present invention is that the supply and demand adjustment means adjusts the generated power by a private power generation facility in which at least the accident has not occurred in the power consumer in the power supply processing. There is in point to let you do.

上記特徴構成によれば、少なくとも電力需要者における事故が未発生である自家発電設備による発電電力の調整を利用して電力補給処理が行なわれるため、この電力補給処理を行なう際に利用される電力供給者の発電設備の発電電力を相対的に減少させることができる。   According to the above characteristic configuration, the power supply process is performed using the adjustment of the generated power by the private power generation facility in which no accident has occurred in the power consumer. Therefore, the power used when performing this power supply process The power generated by the power generation facility of the supplier can be relatively reduced.

第１実施形態の電力需給調整装置と電力供給者と電力需要者とで構成される電力需給システムの構成を説明する図The figure explaining the structure of the electric power supply-and-demand system comprised by the electric power supply-and-demand adjustment apparatus of 1st Embodiment, an electric power supplier, and an electric power consumer. 第２実施形態の電力需給調整装置と電力供給者と電力需要者とで構成される電力需給システムの構成を説明する図The figure explaining the structure of the electric power supply-and-demand system comprised by the electric power supply-and-demand adjustment apparatus of 2nd Embodiment, an electric power supplier, and an electric power consumer. 第３実施形態の電力需給調整装置と電力供給者と電力需要者とで構成される電力需給システムの構成を説明する図The figure explaining the structure of the electric power supply-and-demand system comprised by the electric power supply-and-demand adjustment apparatus of 3rd Embodiment, an electric power supplier, and an electric power consumer.

＜第１実施形態＞
以下に図面を参照して第１実施形態の電力需給調整装置３０Ａ（３０）の構成について説明する。電力需給調整装置３０Ａは、電力供給者１０と電力需要者２０との間での電力の需給を調整する装置である。 <First Embodiment>
The configuration of the power supply and demand adjustment apparatus 30A (30) according to the first embodiment will be described below with reference to the drawings. The power supply / demand adjustment device 30 </ b> A is a device that adjusts the power supply / demand between the power supplier 10 and the power consumer 20.

図１は、第１実施形態の電力需給調整装置３０Ａと電力供給者１０と２つの電力需要者２０（２０Ａ、２０Ｂ）とで構成される電力需給システムＳの構成を説明する図である。
電力供給者１０は、特定規模電気事業者等であり、発電電力を電力系統１に供給可能な発電設備１１を有する。本実施形態において、電力供給者１０は、発電設備１１として、電力系統１に接続される発電所１１Ａと太陽光発電所１１Ｂとを有する。発電所１１Ａは、例えば火力発電所など発電電力が可変の設備である。発電所１１Ａの発電電力を調整することで電力供給者１０による電力系統１への供給電力を調整できる。また、太陽光発電所１１Ｂは、発電電力を意図的に調整できず、気候に応じて発電電力が変化する設備としている。本実施形態では、これら発電所１１Ａと太陽光発電所１１Ｂとを一体として電力供給者１０の発電設備１１とする。 FIG. 1 is a diagram illustrating a configuration of an electric power supply and demand system S that includes an electric power supply and demand adjustment device 30A, an electric power supplier 10, and two electric power consumers 20 (20A and 20B) according to the first embodiment.
The power supplier 10 is a specific scale electric power company or the like, and has a power generation facility 11 that can supply generated power to the power system 1. In the present embodiment, the power supplier 10 includes a power plant 11 </ b> A and a solar power plant 11 </ b> B connected to the power system 1 as the power generation facility 11. The power plant 11A is a facility with variable power generation, such as a thermal power plant. The power supplied to the power system 1 by the power supplier 10 can be adjusted by adjusting the power generated by the power plant 11A. Further, the solar power plant 11B is a facility in which the generated power cannot be intentionally adjusted and the generated power changes according to the climate. In the present embodiment, the power plant 11A and the solar power plant 11B are integrated into the power generation facility 11 of the power supplier 10.

各電力需要者２０Ａ、２０Ｂは、電力消費設備２１と自家発電設備２２とを有する。自家発電設備２２は、例えばコージェネレーション装置など、発電電力が可変の設備である。また、本実施形態では、特定の電力需要者２０において、自家発電設備２２に対して、その発電電力が電力消費設備２１の消費電力以下となるような運転制御が行なわれている。つまり、自家発電設備２２は、電力消費設備２１で消費される分の電力を発電でき、電力系統１に電力を供給することはできない。そして、電力需要者２０は、電力消費設備２１による消費電力から自家発電設備２２による発電電力を減算して導出される不足電力を電力系統１からの受電電力で賄うことになる。従って、自家発電設備２２の発電電力を調整することで電力需要者２０による電力系統１からの受電電力を調整できる。   Each power consumer 20 </ b> A, 20 </ b> B has a power consumption facility 21 and a private power generation facility 22. The private power generation facility 22 is a facility whose generated power is variable, such as a cogeneration device. Further, in the present embodiment, operation control is performed for the specific power consumer 20 such that the generated power is equal to or lower than the power consumption of the power consumption facility 21 with respect to the private power generation facility 22. That is, the private power generation facility 22 can generate the power consumed by the power consumption facility 21 and cannot supply power to the power system 1. Then, the power consumer 20 covers the insufficient power derived by subtracting the power generated by the private power generation facility 22 from the power consumed by the power consumption facility 21 with the received power from the power system 1. Therefore, the received power from the power system 1 by the power consumer 20 can be adjusted by adjusting the power generated by the private power generation facility 22.

電力需給調整装置３０Ａは、発電電力検出手段３１と、減少電力導出手段３３と、需給調整手段３５とを備える。後述するように、この発電電力検出手段３１は、本発明の「事故検出手段Ｄ」として機能する。また、図１に示すように、本実施形態の電力需給調整装置３０Ａは、記憶手段３４を更に備える。この電力需給調整装置３０は、一般的なコンピュータによって実現できる。図１は、電力需給調整装置３０を実現するコンピュータが、通信回線などを介して電力供給者１０及び電力需要者２０と通信可能に接続されている形態を示している。   The power supply / demand adjustment apparatus 30 </ b> A includes generated power detection means 31, reduced power derivation means 33, and supply / demand adjustment means 35. As will be described later, the generated power detection means 31 functions as the “accident detection means D” of the present invention. As shown in FIG. 1, the power supply and demand adjustment apparatus 30 </ b> A of the present embodiment further includes a storage unit 34. The power supply / demand adjustment apparatus 30 can be realized by a general computer. FIG. 1 shows a form in which a computer that realizes a power supply and demand adjustment device 30 is connected to a power supplier 10 and a power consumer 20 through a communication line or the like so as to be communicable.

発電電力検出手段３１は、電力供給者１０の発電所１１Ａの発電電力、並びに、電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２の発電電力を検出する装置である。発電電力検出手段３１を用いて実現される事故検出手段Ｄは、メモリ装置（図示せず）などに、発電電力検出手段３１で検出した電力需要者２０の自家発電設備２２の発電電力を継続的に記憶している。その結果、事故検出手段Ｄは、電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２の発電電力の時間的な変化を監視できる。そして、事故検出手段Ｄは、自家発電設備２２の発電電力が単位時間の間に予め設定された設定値以上減少したときは、自家発電設備２２で事故が発生したと判定する。このように、本実施形態において、事故検出手段Ｄが検出する事故とは、電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２で発生する、例えば不測の運転停止・出力減少のような発電電力の計画外の減少のことであり、電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２の検査や補修などの伴う啓作された運転停止・出力減少とは別である。事故検出手段Ｄは、電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２の発電電力の計画外の減少を検出する計画外減少検出手段と言い換えることもできる。   The generated power detection means 31 is a device that detects the generated power of the power plant 11A of the power supplier 10 and the generated power of the private power generation facilities 22 of the power consumers 20A and 20B. The accident detection means D realized by using the generated power detection means 31 continuously supplies the generated power of the private power generation facility 22 of the power consumer 20 detected by the generated power detection means 31 to a memory device (not shown) or the like. I remember it. As a result, the accident detection means D can monitor temporal changes in the power generated by the private power generation facilities 22 of the power consumers 20A and 20B. The accident detection means D determines that an accident has occurred in the private power generation facility 22 when the power generated by the private power generation facility 22 has decreased by a predetermined value or more during a unit time. As described above, in the present embodiment, the accident detected by the accident detection means D is generated power such as an unexpected operation stop / output decrease occurring in each of the private power generation facilities 22 of the power consumers 20A and 20B. This is an unplanned decrease, and is separate from the enlightened shutdown / output decrease accompanying inspection and repair of the private power generation facilities 22 of the power consumers 20A and 20B. The accident detection means D can be rephrased as an unplanned decrease detection means for detecting an unplanned decrease in the generated power of the private power generation facilities 22 of the power consumers 20A and 20B.

減少電力導出手段３３は、事故検出手段Ｄが検出した事故により減少する自家発電設備２２の発電電力を減少発電電力として導出する。本実施形態では、減少電力導出手段３３は、メモリ装置（図示せず）などに、発電電力検出手段３１から伝達される電力需要者２０の自家発電設備２２の発電電力を継続的に記憶しており、事故検出手段Ｄが自家発電設備２２に事故が発生したと判定する前の自家発電設備２２の発電電力を特定できる。従って、減少電力導出手段３３は、その事故前の発電電力が、事故により減少する自家発電設備２２の発電電力（即ち、減少発電電力）であると導出できる。   The reduced power deriving means 33 derives the generated power of the private power generation facility 22 that decreases due to the accident detected by the accident detecting means D as the reduced generated power. In the present embodiment, the reduced power deriving means 33 continuously stores the generated power of the private power generation facility 22 of the power consumer 20 transmitted from the generated power detection means 31 in a memory device (not shown) or the like. Thus, the accident detection means D can identify the generated power of the private power generation facility 22 before determining that an accident has occurred in the private power generation facility 22. Therefore, the reduced power deriving means 33 can derive that the generated power before the accident is the generated power of the private power generation facility 22 that is reduced due to the accident (that is, the reduced generated power).

記憶手段３４は、電力供給者１０の発電所１１Ａ並びに電力需要者２０Ａ、２０Ｂの自家発電設備２２の最高発電電力及び発電コストに関する情報を記憶している。この発電コストに関する情報は、単位電力を発電するのに要するコストでもよく、或いは、商業的に単位電力を発電する対価として要求するコスト（即ち、売電単価）でもよい。この発電コストに関する情報は、電力供給者１０及び電力需要者２０Ａ、２０Ｂから予め提供を受けることで記憶手段３４に記憶されている。   The memory | storage means 34 has memorize | stored the information regarding the power plant 11A of the electric power supplier 10, and the highest electric power generation and the electric power generation cost of the private power generation equipment 22 of electric power consumers 20A and 20B. The information related to the power generation cost may be a cost required to generate unit power, or may be a cost that is requested as a price for generating unit power commercially (that is, a power selling unit price). The information relating to the power generation cost is stored in the storage unit 34 by receiving in advance from the power supplier 10 and the power consumers 20A and 20B.

需給調整手段３５は、減少電力導出手段３３が導出した減少発電電力を補給するために、電力供給者１０の発電所１１Ａによる発電電力及び電力需要者２０の自家発電設備２２による発電電力の両方を調整対象として、電力供給者１０の発電所１１Ａによる発電電力の調整及び電力需要者２０の自家発電設備２２による発電電力の調整の少なくとも何れか一方を行なわせる電力補給処理を行なう。   The supply and demand adjustment means 35 supplies both the power generated by the power plant 11A of the power supplier 10 and the power generated by the private power generation facility 22 of the power consumer 20 in order to replenish the reduced power generated by the power reduction derivation means 33. As an adjustment target, power supply processing is performed to adjust at least one of adjustment of generated power by the power plant 11A of the power supplier 10 and adjustment of generated power by the private power generation facility 22 of the power consumer 20.

具体的には、需給調整手段３５は、電力補給処理において、減少電力導出手段３３が導出した減少発電電力を補給するために電力供給者１０における発電所１１Ａの発電電力、及び、電力需要者２０における事故が未発生である自家発電設備２２の発電電力を増大させるときのコスト増大量の合計が最小になるように、電力供給者１０における発電所１１Ａ及び電力需要者２０における事故が未発生である自家発電設備２２の少なくとも何れか一方に対する発電電力の増大要求を決定して、その発電電力の増大要求を、対応する電力供給者１０及び電力需要者２０に伝達する。   Specifically, the supply and demand adjustment means 35 in the power supply process supplies the generated power of the power plant 11A in the power supplier 10 and the power consumer 20 to replenish the reduced generated power derived by the reduced power deriving means 33. No accident has occurred in the power plant 11A and the power consumer 20 in the power supplier 10 so that the total amount of cost increase when increasing the generated power of the private power generation facility 22 in which no accident has occurred in A request to increase the generated power for at least one of the private power generation facilities 22 is determined, and the request to increase the generated power is transmitted to the corresponding power supplier 10 and power consumer 20.

以下に、電力需要者２０Ｂの自家発電設備２２に事故が発生した場合を例示して需給調整手段３５による電力補給処理の内容を説明する。
電力需要者２０Ｂの自家発電設備２２に事故が発生して、その自家発電設備２２の発電電力が単位時間の間に予め設定された設定値以上した場合、その発電電力の減少は発電電力検出手段３１によって検出される。例えば、自家発電設備２２の発電電力は、自家発電設備２２が事故により運転停止すればゼロに急減する。そして、発電電力検出手段３１を用いて実現される事故検出手段Ｄは、電力需要者２０Ｂの自家発電設備２２に事故が発生したと判定する。 Below, the content of the electric power supply process by the supply and demand adjustment means 35 is demonstrated exemplifying the case where an accident occurs in the private power generation equipment 22 of the electric power consumer 20B.
When an accident occurs in the private power generation facility 22 of the power consumer 20B and the generated power of the private power generation facility 22 exceeds a preset value during a unit time, the decrease in the generated power is generated power detection means. 31. For example, the power generated by the private power generation facility 22 rapidly decreases to zero if the private power generation facility 22 is shut down due to an accident. And the accident detection means D implement | achieved using the generated power detection means 31 determines with the accident having generate | occur | produced in the private power generation equipment 22 of the electric power consumer 20B.

次に、減少電力導出手段３３は、事故検出手段Ｄが検出した事故により減少する電力需要者２０Ｂの自家発電設備２２の発電電力を減少発電電力として導出する。具体的には、減少電力導出手段３３は、自己のメモリ装置（図示せず）に発電電力検出手段３１から伝達される電力需要者２０Ｂの自家発電設備２２の発電電力を継続的に記憶しており、事故検出手段Ｄがその自家発電設備２２に事故が発生したと判定する前の発電電力を特定できる。従って、減少電力導出手段３３は、その事故前の発電電力が、事故により減少するその自家発電設備２２の発電電力（即ち、減少発電電力）であると導出できる。   Next, the reduced power deriving unit 33 derives the generated power of the private power generation facility 22 of the power consumer 20B, which decreases due to the accident detected by the accident detection unit D, as the reduced generated power. Specifically, the reduced power deriving unit 33 continuously stores the generated power of the private power generation facility 22 of the power consumer 20B transmitted from the generated power detection unit 31 to its own memory device (not shown). The accident detection means D can specify the generated power before determining that an accident has occurred in the private power generation facility 22. Therefore, the reduced power deriving means 33 can derive that the generated power before the accident is the generated power of the private power generation facility 22 that is reduced by the accident (that is, the reduced generated power).

このとき、電力需要者２０Ｂの自家発電設備２２に事故が発生しているため、その減少発電電力を補給するために発電電力を増加させることができるのは、残された電力供給者１０における発電所１１Ａ及び電力需要者２０Ａにおける事故が未発生である自家発電設備２２である。具体的には、電力供給者１０の発電所１１Ａの発電電力を増大させることでその後の電力系統１への供給電力を増大させれば電力系統１への電力の補給を行うことができる。また、電力需要者２０Ａの自家発電設備２２の発電電力を増大させることで電力需要者２０Ａによる電力系統１からの受電電力を減少させれば、本来は電力需要者２０が受電していたはずの電力が電力系統１での余剰電力となり、見かけ上は電力需要者２０Ａの自家発電設備２２がその余剰電力を電力系統１に補給したことになる。つまり、上記減少発電電力を補給するためには、電力供給者１０の発電所１１Ａの発電電力及び電力需要者２０Ａの自家発電設備２２の発電電力を増大する方向に調整する必要があるため、発電所１１Ａ及び自家発電設備２２での発電に伴うコストは増大する。   At this time, since an accident has occurred in the private power generation facility 22 of the power consumer 20B, the power generated by the remaining power supplier 10 can be increased in order to supplement the reduced generated power. This is a private power generation facility 22 in which no accident has occurred in the station 11A and the power consumer 20A. Specifically, if the power supplied to the power system 1 is increased by increasing the generated power of the power station 11A of the power supplier 10, the power to the power system 1 can be replenished. Moreover, if the received power from the power grid 1 by the power consumer 20A is decreased by increasing the power generated by the private power generation facility 22 of the power consumer 20A, the power consumer 20 should have been receiving power originally. The electric power becomes surplus electric power in the electric power system 1, and apparently the private power generation facility 22 of the electric power consumer 20 </ b> A replenishes the electric power system 1 with the extra electric power. That is, in order to replenish the reduced generated power, it is necessary to adjust the generated power of the power plant 11A of the power supplier 10 and the generated power of the private power generation facility 22 of the power consumer 20A. The cost associated with power generation at the station 11A and the private power generation facility 22 increases.

そこで、需給調整手段３５は、減少電力導出手段３３が導出した減少発電電力を補給するために電力供給者１０における発電所１１Ａ及び電力需要者２０Ａにおける事故が未発生である自家発電設備２２の発電電力を増大させるときのコスト増大量の合計が最小になるように、電力供給者１０の発電所１１Ａ及び電力需要者２０Ａの自家発電設備２２の少なくとも何れか一方に対する発電電力の増大要求を決定する。   Therefore, the supply and demand adjustment unit 35 generates power from the private power generation facility 22 in which no accident has occurred in the power plant 11A and the power customer 20A in the power supplier 10 in order to replenish the reduced generated power derived by the reduced power deriving unit 33. A request to increase the generated power for at least one of the power plant 11A of the power supplier 10 and the private power generation facility 22 of the power consumer 20A is determined so that the total amount of cost increase when increasing the power is minimized. .

具体的には、需給調整手段３５は、電力供給者１０の発電所１１Ａ及び電力需要者２０Ａの自家発電設備２２に関して、発電電力検出手段３１の検出結果から得られる現在の発電電力と、記憶手段３４が記憶している最高発電電力に関する情報とから、発電電力をどれだけ増大出来るかを示す増大可能電力値を導出できる。
そして、需給調整手段３５は、導出した発電所１１Ａ及び自家発電設備２２に関する増大可能電力値と、記憶手段３４が記憶している発電所１１Ａ及び自家発電設備２２の発電コストに関する情報とに基づいて、発電所１１Ａ及び自家発電設備２２による発電電力の増大をどのように組み合わせて上記減少発電電力を分担させれば電力供給者１０の発電所１１Ａ及び電力需要者２０Ａの自家発電設備２２の発電電力を増大させるときのコスト増大量の合計が最小になるのかを決定する。つまり、需給調整手段３５は、電力供給者１０の発電所１１Ａ及び電力需要者２０の自家発電設備２２に要求する発電電力の増大値（即ち、発電電力の増大要求）を決定して、電力供給者１０及び電力需要者２０の少なくとも何れか一方に対して、発電電力の増大値を反映した発電電力の減少要求を伝達する。これら電力供給者１０及び電力需要者２０に対する発電電力の増大要求は、発電所１１Ａ及び自家発電設備２２が直接制御される遠隔制御情報の形態で通信回線等を介して伝達できる。 Specifically, the supply and demand adjustment means 35 includes the current generated power obtained from the detection result of the generated power detection means 31 and the storage means for the power plant 11A of the power supplier 10 and the private power generation equipment 22 of the power consumer 20A. From the information on the maximum generated power stored in 34, an increaseable power value indicating how much the generated power can be increased can be derived.
Then, the supply and demand adjustment means 35 is based on the derived power value that can be increased with respect to the power plant 11 </ b> A and the private power generation facility 22, and the information regarding the power generation cost of the power plant 11 </ b> A and the private power generation facility 22 that is stored in the storage means 34. The power generation of the power generation facility 11A of the power supplier 10 and the power generation facility 22 of the power consumer 20A can be realized by combining the increase in power generation by the power plant 11A and the private power generation facility 22 to share the reduced power generation. It is determined whether the total amount of cost increase when increasing is minimized. That is, the supply and demand adjustment means 35 determines the increase value of the generated power required for the power plant 11A of the power supplier 10 and the private power generation facility 22 of the power consumer 20 (that is, the request for increase of the generated power) to supply power. The reduction request of the generated power reflecting the increase value of the generated power is transmitted to at least one of the person 10 and the power consumer 20. The request for increasing the generated power to the power supplier 10 and the power consumer 20 can be transmitted via a communication line or the like in the form of remote control information in which the power plant 11A and the private power generation facility 22 are directly controlled.

電力供給者１０及び電力需要者２０Ａにおいて上述したような発電電力の増大要求に応じた発電電力の増大調整が行なわれると、電力供給者１０による電力系統１への供給電力の増大、及び、電力需要者２０Ａによる電力系統１からの受電電力の減少に伴う電力系統１での余剰電力の発生が実現される。その結果、事故が発生した電力需要者２０Ｂの自家発電設備２２による減少発電電力が補給される。   When the power supplier 10 and the power consumer 20 </ b> A perform the increase adjustment of the generated power according to the increase request of the generated power as described above, the increase in the power supplied to the power system 1 by the power supplier 10 and the power Generation | occurrence | production of the surplus electric power in the electric power grid | system 1 with the reduction | decrease of the received electric power from the electric power grid | system 1 by the consumer 20A is implement | achieved. As a result, the reduced electric power generated by the private power generation facility 22 of the electric power consumer 20B where the accident has occurred is replenished.

以上のように、事故検出手段Ｄが自家発電設備２２の事故を検出し、減少電力導出手段３３が事故により減少するその自家発電設備２２の発電電力（即ち、減少発電電力）を導出することで、自家発電設備２２の事故によってどの程度の電力補給が必要になるのかを把握することができる。そして、需給調整手段３５が、その減少発電電力を補給するために、電力供給者１０における発電所１１Ａによる発電電力及び電力需要者２０における事故が未発生の自家発電設備２２による発電電力の両方を調整対象として、電力供給者１０の発電所１１Ａによる発電電力の調整及び電力需要者２０の自家発電設備２２による発電電力の調整の少なくとも何れか一方を行なわせる電力補給処理を行なう。つまり、需給調整手段３５は、その減少発電電力の補給を行なうために、電力供給者１０が予め確保している予備力だけを利用するのではなく、電力需要者２０における事故が未発生の自家発電設備２２をも予備力として利用できる。従って、電力供給者１０が予め確保しておくべき予備力を小さくできるので、電力需要者２０側に転換されるコストを小さくすることができ、結果として、電力需要者２０が自家発電設備２２を設置することで得られるメリットが相対的に増加することにもつながる。   As described above, the accident detection means D detects an accident in the private power generation facility 22, and the reduced power deriving means 33 derives the generated power (that is, the reduced generated power) of the private power generation facility 22 that decreases due to the accident. It is possible to grasp how much power supply is required due to the accident of the private power generation facility 22. Then, in order for the supply and demand adjustment means 35 to replenish the reduced generated power, both the power generated by the power plant 11A in the power supplier 10 and the power generated by the private power generation facility 22 in which no accident has occurred in the power consumer 20 are generated. As an adjustment target, power supply processing is performed to adjust at least one of adjustment of generated power by the power plant 11A of the power supplier 10 and adjustment of generated power by the private power generation facility 22 of the power consumer 20. That is, the supply and demand adjustment means 35 does not use only the reserve power secured in advance by the power supplier 10 in order to replenish the reduced generated power, but does not generate an accident in the power consumer 20. The power generation facility 22 can also be used as reserve power. Therefore, since the reserve capacity that the power supplier 10 should secure in advance can be reduced, the cost to be converted to the power consumer 20 side can be reduced, and as a result, the power consumer 20 installs the private power generation facility 22. It will also lead to a relative increase in the benefits gained from installation.

＜第２実施形態＞
第２実施形態の電力需給調整装置３０Ｂ（３０）は、事故検出手段Ｄの構成が第１実施形態と異なっている。つまり、どの電力需要者２０の自家発電設備２２で事故が発生したのかを判定する手法が、第１実施形態と異なっている。以下に第２実施形態の電力需給調整装置３０Ｂについて説明するが、第１実施形態と同様の構成については説明を省略する。 Second Embodiment
The power supply and demand adjustment device 30B (30) of the second embodiment is different from the first embodiment in the configuration of the accident detection means D. In other words, the method for determining which power consumer 20 has the private power generation facility 22 has an accident is different from that of the first embodiment. The power supply and demand adjustment device 30B of the second embodiment will be described below, but the description of the same configuration as that of the first embodiment will be omitted.

第２実施形態の電力需給調整装置３０Ｂは、発電電力検出手段３１と、受電電力検出手段３２と、減少電力導出手段３３と、需給調整手段３５とを備える。本実施形態では、後述するように、この受電電力検出手段３２が本発明の「事故検出手段Ｄ」として機能する。また、図２に示すように、本実施形態の電力需給調整装置３０Ｂは、記憶手段３４を更に備える。   The power supply and demand adjustment device 30B of the second embodiment includes generated power detection means 31, received power detection means 32, reduced power derivation means 33, and supply and demand adjustment means 35. In the present embodiment, as will be described later, the received power detection means 32 functions as the “accident detection means D” of the present invention. In addition, as shown in FIG. 2, the power supply and demand adjustment apparatus 30 </ b> B of the present embodiment further includes a storage unit 34.

受電電力検出手段３２は、電力需要者２０Ａ、２０Ｂのそれぞれによる電力系統１からの受電電力を検出する装置である。受電電力検出手段３２を用いて実現される事故検出手段Ｄは、メモリ装置（図示せず）などに、受電電力検出手段３２で検出した電力需要者２０Ａ、２０Ｂによる電力系統１からの受電電力を継続的に記憶している。その結果、事故検出手段Ｄは、電力需要者２０Ａ、２０Ｂのそれぞれの受電電力の時間的な変化を監視できる。この場合、電力需要者２０Ａ、２０Ｂのそれぞれにおいて、例えば自家発電設備２２が事故により停止して発電電力が急減すると、受電電力検出手段３２で検出される受電電力が急増する。従って、事故検出手段Ｄは、電力需要者２０Ａ、２０Ｂの受電電力が単位時間の間に予め設定された設定値以上増大したときは、自家発電設備２２で事故が発生したと判定する。   The received power detection means 32 is a device that detects the received power from the power system 1 by each of the power consumers 20A and 20B. The accident detection means D realized by using the received power detection means 32 transmits the received power from the power system 1 by the power consumers 20A and 20B detected by the received power detection means 32 to a memory device (not shown) or the like. Remember me continuously. As a result, the accident detection means D can monitor temporal changes in the received power of the power consumers 20A and 20B. In this case, in each of the power consumers 20A and 20B, for example, when the private power generation facility 22 stops due to an accident and the generated power rapidly decreases, the received power detected by the received power detection means 32 increases rapidly. Therefore, the accident detection means D determines that an accident has occurred in the private power generation facility 22 when the received power of the power consumers 20A and 20B increases by a preset value or more during a unit time.

減少電力導出手段３３は、事故検出手段Ｄが検出した事故により減少する自家発電設備２２の発電電力を減少発電電力として導出する。減少電力導出手段３３は、メモリ装置（図示せず）などに、発電電力検出手段３１から伝達される電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２の発電電力を継続的に記憶しており、事故検出手段Ｄが特定の自家発電設備２２に事故が発生したと判定する前のその特定の自家発電設備２２の発電電力を知ることができる。従って、減少電力導出手段３３は、その事故前の発電電力が、事故により減少する自家発電設備２２の発電電力（即ち、減少発電電力）であると導出できる。   The reduced power deriving means 33 derives the generated power of the private power generation facility 22 that decreases due to the accident detected by the accident detecting means D as the reduced generated power. The reduced power deriving means 33 continuously stores the generated power of the private power generation facilities 22 of the power consumers 20A and 20B transmitted from the generated power detection means 31 in a memory device (not shown) or the like. Thus, it is possible to know the generated power of the specific private power generation facility 22 before the accident detection means D determines that an accident has occurred in the specific private power generation facility 22. Therefore, the reduced power deriving means 33 can derive that the generated power before the accident is the generated power of the private power generation facility 22 that is reduced due to the accident (that is, the reduced generated power).

このようにして、本実施形態の電力需給調整装置３０Ｂは、特定の電力需要者２０の自家発電設備２２で事故が発生したこと、及び、その特定の自家発電設備２２での事故による減少発電電力を特定することができる。   In this way, the power supply and demand adjustment device 30B of the present embodiment reduces the generated power due to the occurrence of an accident at the private power generation facility 22 of the specific power consumer 20 and the accident at the specific private power generation facility 22. Can be specified.

＜第３実施形態＞
第３実施形態の電力需給調整装置３０Ｃ（３０）は、事故検出手段Ｄの構成が第１実施形態及び第２実施形態と異なっている。つまり、どの電力需要者２０の自家発電設備２２で事故が発生したのかを判定する手法が、第１実施形態及び第２実施形態と異なっている。以下に第３実施形態の電力需給調整装置３０Ｃについて説明するが、上記実施形態と同様の構成については説明を省略する。 <Third Embodiment>
In the power supply and demand adjustment device 30C (30) of the third embodiment, the configuration of the accident detection means D is different from those of the first embodiment and the second embodiment. In other words, the method for determining which power consumer 20 own power generation facility 22 has an accident is different from the first embodiment and the second embodiment. The power supply and demand adjustment apparatus 30C of the third embodiment will be described below, but the description of the same configuration as that of the above embodiment will be omitted.

第３実施形態の電力需給調整装置３０Ｃは、発電電力検出手段３１と、受電電力検出手段３２と、減少電力導出手段３３と、需給調整手段３５とを備える。本実施形態では、後述するように、発電電力検出手段３１及び受電電力検出手段３２が本発明の「事故検出手段Ｄ」として機能する。また、図２に示すように、本実施形態の電力需給調整装置３０Ｂは、記憶手段３４を更に備える。   The power supply / demand adjustment apparatus 30C of the third embodiment includes generated power detection means 31, received power detection means 32, reduced power derivation means 33, and supply / demand adjustment means 35. In the present embodiment, as will be described later, the generated power detection means 31 and the received power detection means 32 function as the “accident detection means D” of the present invention. In addition, as shown in FIG. 2, the power supply and demand adjustment apparatus 30 </ b> B of the present embodiment further includes a storage unit 34.

電力需要者２０において、自家発電設備２２に対して、その発電電力が電力消費設備２１の消費電力以下となるような運転制御（即ち、逆潮流を回避するような運転制御）が行なわれている場合、電力消費設備２１の消費電力が減少すると、それに伴って自家発電設備２２の発電電力も減少される。従って、自家発電設備２２の発電電力が急減しても、それが電力消費設備２１の消費電力の急減に伴って行なわれた正常な動作である可能性もある。但し、電力消費設備２１の消費電力が急減していなければ、自家発電設備２２の発電電力が急減するような制御が行なわれることはない。
そこで、本実施形態において、事故検出手段Ｄは、自家発電設備２２の発電電力が単位時間の間に予め設定された第１設定値以上減少し、且つ、その自家発電設備２２が設けられている電力需要者２０の受電電力が同じ単位時間の間で予め設定された第２設定値以上増大したときは、その自家発電設備２２で事故が発生したと判定する。 In the power consumer 20, operation control is performed on the private power generation facility 22 such that the generated power is less than or equal to the power consumption of the power consumption facility 21 (that is, operation control that avoids reverse power flow). In this case, when the power consumption of the power consumption facility 21 decreases, the power generation of the private power generation facility 22 decreases accordingly. Therefore, even if the generated power of the private power generation facility 22 decreases rapidly, there is a possibility that this is a normal operation performed in association with the rapid decrease of the power consumption of the power consumption facility 21. However, if the power consumption of the power consumption facility 21 has not decreased rapidly, control that causes the power generation of the private power generation facility 22 to decrease rapidly is not performed.
Therefore, in the present embodiment, the accident detection means D is provided with the private power generation facility 22 in which the power generated by the private power generation facility 22 decreases by a predetermined first set value or more during a unit time. When the received power of the power consumer 20 increases by a preset second set value or more during the same unit time, it is determined that an accident has occurred in the private power generation facility 22.

減少電力導出手段３３は、事故検出手段Ｄが検出した事故により減少する自家発電設備２２の発電電力を減少発電電力として導出する。減少電力導出手段３３は、メモリ装置（図示せず）などに、発電電力検出手段３１から伝達される電力需要者２０Ａ、２０Ｂのそれぞれの自家発電設備２２の発電電力を継続的に記憶しており、事故検出手段Ｄが特定の自家発電設備２２に事故が発生したと判定する前のその特定の自家発電設備２２の発電電力を知ることができる。従って、減少電力導出手段３３は、その事故前の発電電力が、事故により減少する自家発電設備２２の発電電力（即ち、減少発電電力）であると導出できる。   The reduced power deriving means 33 derives the generated power of the private power generation facility 22 that decreases due to the accident detected by the accident detecting means D as the reduced generated power. The reduced power deriving means 33 continuously stores the generated power of the private power generation facilities 22 of the power consumers 20A and 20B transmitted from the generated power detection means 31 in a memory device (not shown) or the like. Thus, it is possible to know the generated power of the specific private power generation facility 22 before the accident detection means D determines that an accident has occurred in the specific private power generation facility 22. Therefore, the reduced power deriving means 33 can derive that the generated power before the accident is the generated power of the private power generation facility 22 that is reduced due to the accident (that is, the reduced generated power).

このようにして、本実施形態の電力需給調整装置３０Ｃは、特定の電力需要者２０の自家発電設備２２で事故が発生したことを特定して、及び、その特定の自家発電設備２２での事故による減少発電電力が補給されるような制御を行なうことができる。   In this way, the power supply and demand adjustment apparatus 30C of the present embodiment specifies that an accident has occurred in the private power generation facility 22 of the specific power consumer 20, and the accident in the specific private power generation facility 22 It is possible to perform control such that the reduced generated power due to is replenished.

＜別実施形態＞
＜１＞
上記実施形態では、電力需給調整装置３０が、電力供給者１０及び電力需要者２０とは別に設置された構成の電力需給システムＳを例示したが、電力需給システムＳの構成は適宜変更可能である。例えば、電力需給調整装置３０が電力供給者１０と一体に設けられていてもよい。つまり、特定規模電気事業者等の電力供給者１０自身が、上述したような電力補給処理を行ってもよい。
また、上記実施形態では、電力供給者１０が発電設備１１として１機の発電所１１Ａと１機の太陽光発電所１１Ｂとを有し、電力需要者２０が１機の電力消費設備２１と１機の自家発電設備２２とを有する例を説明したが、電力供給者１０が有する発電設備１１の構成内容及び電力需要者２０が有する電力消費設備２１と自家発電設備２２との構成内容は適宜変更可能である。
更に、上記実施形態では、電力需給システムＳが、一つの電力供給者１０と二つの電力需要者２０とを有する例を説明したが、電力供給者１０及び電力需要者２０の数は適宜変更可能である。例えば、電力需給システムＳが、一つ又は複数の電力供給者１０と一つ又は複数の電力需要者２０と電力需給調整装置３０とを有し、その電力需給調整装置３０が、それら電力供給者１０及び電力需要者２０との間で上記電力補給処理を行なってもよい。 <Another embodiment>
<1>
In the above-described embodiment, the power supply / demand adjustment apparatus 30 is exemplified as the power supply / demand system S configured separately from the power supplier 10 and the power consumer 20, but the configuration of the power supply / demand system S can be changed as appropriate. . For example, the power supply and demand adjustment device 30 may be provided integrally with the power supplier 10. That is, the power supplier 10 such as a specific scale electric power company may perform the power supply process as described above.
Moreover, in the said embodiment, the electric power supplier 10 has one power plant 11A and one solar power plant 11B as the power generation equipment 11, and the electric power consumer 20 has one power consumption equipment 21 and 1 Although the example which has the private power generation equipment 22 of a machine was demonstrated, the structure content of the power generation equipment 11 which the electric power supplier 10 has, and the power consumption equipment 21 which the electric power consumer 20 has, and the structure content of the private power generation equipment 22 are changed suitably. Is possible.
Furthermore, although the electric power supply and demand system S demonstrated the example which has the one electric power supplier 10 and the two electric power consumers 20 in the said embodiment, the number of the electric power suppliers 10 and the electric power consumers 20 can be changed suitably. It is. For example, the power supply and demand system S includes one or a plurality of power suppliers 10, one or a plurality of power consumers 20, and a power supply and demand adjustment device 30, and the power supply and demand adjustment device 30 is the power supplier. 10 and the power consumer 20 may perform the power supply process.

＜２＞
上記実施形態では、記憶手段３４が電力供給者１０及び電力需要者２０から発電コストに関する情報を予め記憶しておき、需給調整手段３５が、記憶手段３４に記憶されているその情報を参照して電力補給処理を行なう例を説明したが、発電コストに関する情報は必要に応じて電力需給調整装置３０から電力供給者１０及び電力需要者２０へ問い合わせを行なって収集するように構成してもよい。 <2>
In the said embodiment, the memory | storage means 34 memorize | stores beforehand the information regarding power generation cost from the electric power supplier 10 and the electric power consumer 20, and the demand-and-supply adjustment means 35 refers to the information memorize | stored in the memory | storage means 34. Although an example in which the power supply process is performed has been described, information on the power generation cost may be collected by making an inquiry from the power supply and demand adjustment device 30 to the power supplier 10 and the power consumer 20 as necessary.

＜３＞
上記実施形態では、需給調整手段３５が、電力補給処理において、電力供給者１０の発電設備１１による発電電力の調整及び電力需要者２０の自家発電設備２２による発電電力の調整の少なくとも何れか一方を行なわせる例を説明したが、上記電力補給処理のために、少なくとも電力需要者２０の自家発電設備２２による発電電力の調整が利用されるようにしてもよい。この場合、少なくとも電力需要者２０による受電電力量の調整を利用して上記電力補給処理が行なわれるため、この電力補給処理を行なう際に利用される電力供給者１０の発電設備１１の発電電力を相対的に減少させることができる。 <3>
In the above embodiment, the supply and demand adjustment means 35 performs at least one of adjustment of generated power by the power generation facility 11 of the power supplier 10 and adjustment of generated power by the private power generation facility 22 of the power consumer 20 in the power supply process. Although the example to perform is demonstrated, adjustment of the electric power generated by the private electric power generation equipment 22 of the electric power consumer 20 may be utilized for the said electric power supply process. In this case, since the power supply process is performed using at least the adjustment of the amount of received power by the power consumer 20, the generated power of the power generation facility 11 of the power supplier 10 used when performing this power supply process is used. It can be reduced relatively.

＜４＞
上記実施形態では、事故により自家発電設備２２が運転停止されることでその発電電力がゼロになる場合を例示したが、自家発電設備２２の発電電力が例えば最低発電電力にまで急減するような場合であっても構わない。 <4>
In the above-described embodiment, the case where the generated power becomes zero by stopping the operation of the private power generation facility 22 due to an accident is exemplified. However, the generated power of the private power generation facility 22 suddenly decreases to, for example, the minimum generated power. It does not matter.

本発明は、電力需要者の自家発電設備が事故により停止したとしても、その自家発電設備の減少発電電力を補うことができる電力需給調整装置に利用できる。   INDUSTRIAL APPLICABILITY The present invention can be used for a power supply and demand adjustment device that can compensate for the reduced generated power of a private power generation facility even if the private power generation facility of the power consumer is stopped due to an accident.

１ 電力系統
１０ 電力供給者
１１ 発電設備
２０ 電力需要者
２１ 電力消費設備
２２ 自家発電設備
３０ 電力需給調整装置
３１ 発電電力検出手段
３２ 受電電力検出手段
３５ 需給調整手段
Ｄ 事故検出手段 DESCRIPTION OF SYMBOLS 1 Electric power system 10 Electric power supplier 11 Electric power generation equipment 20 Electric power demander 21 Electric power consumption equipment 22 Private power generation equipment 30 Electric power supply and demand adjustment apparatus 31 Electric power generation detection means 32 Received electric power detection means 35 Supply and demand adjustment means D Accident detection means

Claims (3)

発電電力を電力系統に供給可能な発電設備を有する電力供給者と、電力消費設備と自家発電設備とを有し、前記電力消費設備による消費電力から前記自家発電設備による発電電力を減算して導出される不足電力を前記電力系統からの受電電力で賄う電力需要者との間での電力の需給を調整する電力需給調整装置であって、
前記自家発電設備の事故を検出する事故検出手段と、
前記事故検出手段が検出した事故により減少する、事故が発生した前記自家発電設備の発電電力を減少発電電力として導出する減少電力導出手段と、
前記減少発電電力を補給するために、前記電力供給者における前記発電設備による発電電力、及び、前記電力需要者における事故が未発生である前記自家発電設備による発電電力の両方を調整対象として、前記電力供給者における前記発電設備による発電電力の調整及び前記電力需要者における前記事故が未発生である前記自家発電設備による発電電力の調整の少なくとも何れか一方を行なわせる電力補給処理を行なう需給調整手段とを備え、
前記事故検出手段は、前記自家発電設備の発電電力が単位時間の間に予め設定された第１設定値以上減少し、且つ、当該自家発電設備が設けられている前記電力需要者の受電電力が同じ前記単位時間の間で予め設定された第２設定値以上増大したときは、当該自家発電設備で事故が発生したと判定する電力需給調整装置。 A power supplier having a power generation facility capable of supplying generated power to the power system, a power consumption facility and a private power generation facility, and subtracting the power generated by the private power generation facility from the power consumption by the power consumption facility A power supply and demand adjustment device that adjusts the supply and demand of power with a power consumer that covers the insufficient power to be received with the received power from the power system,
Accident detection means for detecting an accident of the private power generation facility;
Reduced power deriving means for deriving the generated power of the private power generation facility where the accident has occurred as a reduced generated power, which is reduced by the accident detected by the accident detecting means,
In order to replenish the reduced generation power, both the power generated by the power generation facility in the power supplier and the power generation by the private power generation facility in which no accident has occurred in the power consumer are subject to adjustment, It performs power supply processing for causing at least one of the power generation adjustment by that originating Denden force to equipment and adjustment of generated power the accident in the power consumer is by the private power generation facility is not occurred in the electric power supplier Supply and demand adjustment means,
In the accident detection means, the generated power of the private power generation facility decreases by a predetermined first set value or more during a unit time, and the received power of the power consumer provided with the private power generation facility is A power supply and demand adjustment device that determines that an accident has occurred in the private power generation facility when it has increased by a predetermined second set value or more during the same unit time . 前記需給調整手段は、前記電力補給処理において、前記減少発電電力を補給するために前記電力供給者における前記発電設備及び前記電力需要者における前記事故が未発生である自家発電設備の発電電力を増大させるときのコスト増大量の合計が最小になるように、前記電力供給者における前記発電設備及び前記電力需要者における前記事故が未発生である自家発電設備の少なくとも何れか一方に対する発電電力の増大要求を決定して、当該発電電力の増大要求を、対応する前記電力供給者及び前記電力需要者に伝達する請求項１に記載の電力需給調整装置。   In the power supply process, the supply and demand adjustment means increases the generated power of the power generation facility in the power supplier and the private power generation facility in which the accident has not occurred in the power consumer in order to supplement the reduced generated power. A request to increase the generated power to at least one of the power generation facility at the power supplier and the private power generation facility where the accident has not occurred at the power consumer so that the total amount of cost increase when the The power supply and demand adjustment apparatus according to claim 1, wherein a request to increase the generated power is transmitted to the corresponding power supplier and the power consumer. 前記需給調整手段は、前記電力補給処理において、少なくとも前記電力需要者における前記事故が未発生である自家発電設備による発電電力の調整を行なわせる請求項１に記載の電力需給調整装置。The power supply / demand adjustment apparatus according to claim 1, wherein the supply / demand adjustment unit adjusts the generated power by a private power generation facility in which at least the accident has not occurred in the power consumer in the power supply process.
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