[go: up one dir, main page]

JP2013229999A - Power supply method in waste treatment facility - Google Patents

Power supply method in waste treatment facility Download PDF

Info

Publication number
JP2013229999A
JP2013229999A JP2012100212A JP2012100212A JP2013229999A JP 2013229999 A JP2013229999 A JP 2013229999A JP 2012100212 A JP2012100212 A JP 2012100212A JP 2012100212 A JP2012100212 A JP 2012100212A JP 2013229999 A JP2013229999 A JP 2013229999A
Authority
JP
Japan
Prior art keywords
power
waste treatment
treatment facility
diesel generator
unit price
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2012100212A
Other languages
Japanese (ja)
Inventor
Terutoshi Togami
照敏 戸上
Yoshio Yano
芳穂 矢野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Engineering Co Ltd
Nippon Steel Plant Designing Corp
Original Assignee
NS Plant Designing Corp
Nippon Steel and Sumikin Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NS Plant Designing Corp, Nippon Steel and Sumikin Engineering Co Ltd filed Critical NS Plant Designing Corp
Priority to JP2012100212A priority Critical patent/JP2013229999A/en
Publication of JP2013229999A publication Critical patent/JP2013229999A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a power supply method in a waste treatment facility which allows for power cost reduction by operating a diesel generator depending on the power purchase price and the price of power generated by the diesel generator.SOLUTION: In the power supply method in a waste treatment facility including a turbine generator which can transmit power to the outside of a facility, and a diesel generator which cannot transmit power to the outside of the facility, supply ratio of power generated from the diesel generator and purchased power is changed depending on the magnitude of contract power and power consumption of the waste treatment facility (ST10), and the magnitude of the price of the purchased power supplied from a commercial power system, and the price of power generated by the diesel generator (ST11, ST12).

Description

本発明は、施設外への送電が可能なタービン発電機と施設外への送電ができないディーゼル発電機とを備える廃棄物処理施設における電力供給方法に関する。   The present invention relates to a power supply method in a waste treatment facility including a turbine generator capable of transmitting power outside the facility and a diesel generator capable of transmitting power outside the facility.

自家用発電機を商用電力系統と連系させ、自家用発電機で不足する電力を商用電力系統から負荷に供給するようにした系統連系運転が従来より広く行われている。このような電力供給システムでは、自家用発電機の余剰電力を電力会社に販売する、いわゆる逆潮流が電気事業法により認められている。   A grid-connected operation in which a private generator is connected to a commercial power system and power that is insufficient in the private power generator is supplied from the commercial power system to a load has been widely used. In such a power supply system, a so-called reverse power flow in which surplus power from a private generator is sold to a power company is recognized by the Electricity Business Act.

例えば、特許文献1では、所定の時間範囲毎に、製造プラント内で使用される使用電力の時間的変化を予測し、その予測した使用電力の時間的変化に基づいて、外部から購入することが必要と予測される買電力量が所定の電力量を超えないように発電電力を調整することを特徴とする製造プラント発電設備の発電電力調整方法の発明が開示されている。   For example, in Patent Document 1, it is possible to predict a temporal change in power usage used in a manufacturing plant for each predetermined time range, and to purchase from the outside based on the predicted temporal change in power usage. An invention of a method for adjusting the generated power of a production plant power generation facility is disclosed, wherein the generated power is adjusted so that the amount of purchased electric power predicted to be necessary does not exceed a predetermined amount of electric power.

また、特許文献2では、電力価値が高い時間帯を、蓄電電力を活用して発電電力を積極的に売電に回すべき時間帯に決定することにより、電力の売買に伴う電気消費者の経済的利益を増大させることができる電力制御装置及び電力制御方法の発明が開示されている。   Further, in Patent Document 2, by determining the time zone in which the power value is high as the time zone in which the stored power is used and the generated power should be actively used for selling power, the economy of the electric consumer accompanying the buying and selling of power An invention of a power control device and a power control method capable of increasing the profit is disclosed.

特開2010−148185号公報JP 2010-148185 A 特開2011−130618号公報JP 2011-130618 A

廃棄物焼却に伴って発生する廃熱によって駆動するタービン発電機と燃料油によって駆動するディーゼル発電機とを備える廃棄物処理施設では、電気事業者による新エネルギー等の利用に関する特別措置法(RPS法)の適用により、タービン発電機から施設外に送電される電力単価が他の電力に比べて高く設定されている。そのため、廃棄物処理施設に設置されている、廃棄物以外の燃料を使用する発電機による外部送電(逆潮流)が禁止されている。
なお、本明細書では、ディーゼル発電機を「DG」と呼ぶことがある。
In a waste treatment facility equipped with a turbine generator driven by waste heat generated by waste incineration and a diesel generator driven by fuel oil, the Special Measures Law (RPS Act) on the use of new energy by electric power companies ), The unit price of power transmitted from the turbine generator to the outside of the facility is set higher than other power. For this reason, external power transmission (reverse power flow) using a power generator that uses fuel other than waste installed in a waste treatment facility is prohibited.
In the present specification, the diesel generator may be referred to as “DG”.

従来、廃棄物処理施設に備えられているディーゼル発電機は、30分間の受電電力量の積算値が契約電力を超えないように起動、停止している。その際、ディーゼル発電機による発電電力が商用電力系統(施設外)へ逆潮流しないように一定の電力を買いつつ、ディーゼル発電機を運転することが一般的であるため、買電を最大もしくは最小とする制御を行っている。
図4は、従来の廃棄物処理施設における電力供給方法を示したフロー図である。従来の方法では、先ず、廃棄物処理施設の契約電力と消費電力を比較し(ST100)、消費電力が契約電力以上である場合、契約電力にディーゼル発電機の最小発電電力を加えた電力で消費電力を賄えるかどうか判断する(ST101)。上記電力和が消費電力以下である場合、買電を最大とし(ST102)、上記電力和が消費電力を上回っている場合、買電を最小としてそれぞれディーゼル発電機を運転する(ST103)。一方、廃棄物処理施設の消費電力が契約電力未満の場合は、ディーゼル発電機を停止して電力供給は買電力のみとする(ST104)。
Conventionally, a diesel generator provided in a waste treatment facility is started and stopped so that the integrated value of the amount of received power for 30 minutes does not exceed the contract power. At that time, it is common to operate the diesel generator while buying constant power so that the power generated by the diesel generator does not flow backward to the commercial power system (outside of the facility), so the power purchase should be maximized or minimized. Control is performed.
FIG. 4 is a flowchart showing a method of supplying power in a conventional waste disposal facility. In the conventional method, first, the contract power and the power consumption of the waste treatment facility are compared (ST100). If the power consumption is equal to or greater than the contract power, the power consumed is the contract power plus the minimum power generated by the diesel generator. It is determined whether power can be covered (ST101). When the power sum is less than or equal to the power consumption, the power purchase is maximized (ST102), and when the power sum exceeds the power consumption, the diesel generator is operated with the power purchase minimized (ST103). On the other hand, if the power consumption of the waste treatment facility is less than the contract power, the diesel generator is stopped and the power supply is limited to the purchased power (ST104).

上述した従来の電力供給方法では、買電単価が高い場合でも運転方法を変えないので、無駄な電力コストが掛かるという問題がある。
一方、特許文献1記載の発明が対象とする製造プラント設備や特許文献2記載の発明が対象とする個人等の電気消費者は、RPS法の規制を受ける廃棄物処理施設と異なり、自由に売電が可能である。従って、特許文献1や特許文献2に記載されている技術は、廃棄物処理施設の電力コストを削減するうえで参考とならない。
The conventional power supply method described above has a problem in that wasteful power costs are incurred because the operation method is not changed even when the power purchase unit price is high.
On the other hand, unlike the waste treatment facility subject to the regulation of the RPS Law, the manufacturing plant equipment covered by the invention described in Patent Document 1 and the electric consumers such as individuals covered by the invention described in Patent Document 2 are free to sell. Electricity is possible. Therefore, the techniques described in Patent Document 1 and Patent Document 2 are not helpful in reducing the power cost of the waste treatment facility.

本発明はかかる事情に鑑みてなされたもので、買電単価とディーゼル発電機による発電単価に応じてディーゼル発電機を運転することで電力コストを削減することが可能な、廃棄物処理施設における電力供給方法を提供することを目的とする。   The present invention has been made in view of such circumstances, and it is possible to reduce the power cost by operating the diesel generator according to the unit price of power purchase and the unit price of power generated by the diesel generator. An object is to provide a supply method.

上記目的を達成するため、本発明は、施設外への送電が可能なタービン発電機と施設外への送電ができないディーゼル発電機とを備える廃棄物処理施設における電力供給方法であって、
前記廃棄物処理施設の契約電力と該廃棄物処理施設の消費電力の大小、及び商用電力系統から供給される買電電力の単価と前記ディーゼル発電機による発電電力の単価の大小に応じて、前記ディーゼル発電機による発電電力と前記買電電力の供給比率を変化させることを特徴としている。
In order to achieve the above object, the present invention is a power supply method in a waste treatment facility comprising a turbine generator capable of transmitting power outside the facility and a diesel generator capable of transmitting power outside the facility,
According to the contract power of the waste treatment facility and the power consumption of the waste treatment facility, and the unit price of purchased power supplied from a commercial power system and the unit price of power generated by the diesel generator, It is characterized by changing the supply ratio of the power generated by the diesel generator and the purchased power.

本発明では、廃棄物処理施設の契約電力と消費電力の大小に加えて、商用電力系統から供給される買電電力の単価とディーゼル発電機による発電電力の単価の大小に応じて、ディーゼル発電機による発電電力と買電電力の供給比率を変化させるようにしているので、発電単価と買電単価を比較して、電力単価が低いほうの供給比率を高めることができる。   In the present invention, in addition to the contract power and the power consumption of the waste treatment facility, the diesel generator is determined according to the unit price of the purchased power supplied from the commercial power system and the unit price of the power generated by the diesel generator. Since the supply ratio between the generated power and the purchased power is changed, the power supply unit price and the purchased unit price are compared, and the supply ratio with the lower power unit price can be increased.

また、本発明に係る廃棄物処理施設における電力供給方法では、以下の制御を行うことを好適とする。
前記ディーゼル発電機による発電電力の最大値MX1及び最小値MN1、並びに前記買電電力の最大値MX2及び最小値MN2を予め設定しておく。そして、
(a)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力以上、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価以下のとき、前記ディーゼル発電機による発電電力を前記最大値MX1もしくは前記買電電力を前記最小値MN2に維持して前記廃棄物処理施設内の負荷に電力を供給する。
(b)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力以上、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価を超えるとき、前記ディーゼル発電機による発電電力を前記最小値MN1もしくは前記買電電力を前記最大値MX2に維持して前記廃棄物処理施設内の負荷に電力を供給する。
(c)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力未満、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価以下のとき、前記買電電力を前記最小値MN2に維持して前記廃棄物処理施設内の負荷に電力を供給する。
(d)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力未満、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価を超えるとき、前記ディーゼル発電機を停止して前記買電電力のみにより前記廃棄物処理施設内の負荷に電力を供給する。
In the power supply method in the waste treatment facility according to the present invention, it is preferable to perform the following control.
The maximum value MX1 and minimum value MN1 of power generated by the diesel generator and the maximum value MX2 and minimum value MN2 of the purchased power are set in advance. And
(A) When the power consumption of the waste treatment facility is equal to or greater than the contract power of the waste treatment facility and the unit price of the generated power by the diesel generator is equal to or less than the unit price of the purchased power, the generated power by the diesel generator Is maintained at the maximum value MX1 or the purchased power at the minimum value MN2, and power is supplied to the load in the waste disposal facility.
(B) When the power consumption of the waste treatment facility is equal to or greater than the contract power of the waste treatment facility and the unit price of the generated power by the diesel generator exceeds the unit price of the purchased power, the generated power by the diesel generator Is maintained at the minimum value MN1 or the purchased power at the maximum value MX2, and power is supplied to the load in the waste disposal facility.
(C) When the power consumption of the waste treatment facility is less than the contract power of the waste treatment facility and the unit price of the generated power by the diesel generator is equal to or less than the unit price of the purchased power, the purchased power is reduced to the minimum Electric power is supplied to the load in the waste treatment facility while maintaining the value MN2.
(D) When the power consumption of the waste treatment facility is less than the contracted power of the waste treatment facility and the unit price of the power generated by the diesel generator exceeds the unit price of the purchased power, the diesel generator is stopped. Then, electric power is supplied only to the purchased electric power to the load in the waste treatment facility.

廃棄物処理施設の消費電力が契約電力以上の場合、発電機による電力供給が必要となる。当該構成では、発電単価が買電単価以下のとき、ディーゼル発電機による発電電力を最大もしくは買電電力を最小にすると共に、発電単価が買電単価を超えるときは、ディーゼル発電機による発電電力を最小もしくは買電電力を最大にして電力コストを削減する。
一方、廃棄物処理施設の消費電力が契約電力未満の場合は、発電単価が買電単価以下のとき、買電電力を最小にしてディーゼル発電機を運転すると共に、発電単価が買電単価を超えるときは、ディーゼル発電機を停止することにより電力コストを削減する。
When the power consumption of the waste treatment facility is equal to or greater than the contract power, power supply by a generator is required. In this configuration, when the unit price of power generation is less than or equal to the unit price of power purchase, the power generated by the diesel generator is maximized or minimized, and when the unit price of power generation exceeds the unit price of power purchase, the power generated by the diesel generator is Reduce power costs by minimizing power or maximizing power purchases.
On the other hand, if the power consumption of the waste treatment facility is less than the contracted power, when the unit price of power generation is less than or equal to the unit price of power purchase, the diesel generator is operated with the power purchased minimum and the unit price of power generation exceeds the unit price of power purchase When it comes to reducing power costs by shutting down the diesel generator.

また、本発明に係る廃棄物処理施設における電力供給方法では、前記廃棄物処理施設の稼動開始時及び稼動停止時に前記ディーゼル発電機を運転するようにしてもよい。   Moreover, in the power supply method in the waste treatment facility according to the present invention, the diesel generator may be operated when the waste treatment facility is started and stopped.

廃棄物処理施設が稼働している間は、廃棄物焼却に伴って発生する廃熱によって駆動するタービン発電機から供給される電力によって廃棄物処理施内の電力を賄うことができることに加え、タービン発電機から供給される電力を施設外へ送電して売電することもできる。そのため、ディーゼル発電機の運転を廃棄物処理施設の稼動開始時及び稼動停止時に限定してもよい。   While the waste treatment facility is operating, in addition to being able to cover the power in the waste treatment facility with the power supplied from the turbine generator driven by the waste heat generated by waste incineration, The power supplied from the generator can be transmitted outside the facility for sale. Therefore, the operation of the diesel generator may be limited when the waste treatment facility is started and stopped.

本発明に係る廃棄物処理施設における電力供給方法では、廃棄物処理施設の契約電力と消費電力の大小に加えて、商用電力系統から供給される買電電力の単価とディーゼル発電機による発電電力の単価の大小に応じて、ディーゼル発電機による発電電力と買電電力の供給比率を変化させるようにしているので、電力単価が低いほうの供給比率を高めることができる。その結果、従来に比べて電力コストの削減が可能となる。   In the power supply method in the waste treatment facility according to the present invention, in addition to the contract power and the power consumption of the waste treatment facility, the unit price of the purchased power supplied from the commercial power system and the power generated by the diesel generator Since the supply ratio of the power generated by the diesel generator and the purchased power is changed according to the unit price, the supply ratio with the lower power unit price can be increased. As a result, the power cost can be reduced as compared with the conventional case.

廃棄物処理施設の電力供給系統の一例を示した模式図である。It is the schematic diagram which showed an example of the electric power supply system of a waste disposal facility. 本発明の一実施の形態に係る廃棄物処理施設における電力供給方法を示したフロー図である。It is the flowchart which showed the electric power supply method in the waste disposal facility which concerns on one embodiment of this invention. 廃棄物処理施設の稼動開始時における廃棄物処理施設の電力状況をシミュレーションしたグラフであり、(A)は消費電力の推移、(B)は買電電力の推移、(C)はディーゼル発電機による発電電力の推移、(D)は電力コストの推移をそれぞれ示している。It is a graph simulating the power situation of the waste treatment facility at the start of operation of the waste treatment facility, (A) is a change in power consumption, (B) is a change in purchased power, (C) is a diesel generator Changes in generated power and (D) show changes in power cost. 従来の廃棄物処理施設における電力供給方法を示したフロー図である。It is the flowchart which showed the electric power supply method in the conventional waste disposal facility.

続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態に付き説明し、本発明の理解に供する。   Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.

本発明の一実施の形態に係る廃棄物処理施設における電力供給方法が適用される廃棄物処理施設20の電力供給系統の一例を図1に示す。
商用電力系統15から廃棄物処理施設20に供給される特別高圧電力は、変圧器12により電圧調整された後、電力継電器13を経由して各負荷16に配電線14を介して供給される。
FIG. 1 shows an example of a power supply system of a waste treatment facility 20 to which a power supply method in a waste treatment facility according to an embodiment of the present invention is applied.
The extra high voltage power supplied from the commercial power system 15 to the waste treatment facility 20 is voltage-adjusted by the transformer 12 and then supplied to each load 16 via the distribution line 14 via the power relay 13.

廃棄物処理施設20には、燃料油によって駆動するディーゼル発電機10と、廃棄物焼却に伴って発生する廃熱によって駆動するタービン発電機11とが備えられている。タービン発電機11は変圧器12と電力継電器13の間の配電線14に、ディーゼル発電機10は電力継電器13と負荷16の間の配電線14にそれぞれ接続されている。即ち、電力継電器13を挟んで商用電力系統15側にタービン発電機11が、負荷16側にディーゼル発電機10が配置されている。   The waste treatment facility 20 includes a diesel generator 10 that is driven by fuel oil and a turbine generator 11 that is driven by waste heat generated by waste incineration. The turbine generator 11 is connected to the distribution line 14 between the transformer 12 and the power relay 13, and the diesel generator 10 is connected to the distribution line 14 between the power relay 13 and the load 16. That is, the turbine generator 11 is disposed on the commercial power system 15 side and the diesel generator 10 is disposed on the load 16 side with the power relay 13 interposed therebetween.

電力継電器13は、ディーゼル発電機10の発電電力が商用電力系統15に逆潮流しないようにするための装置であり、商用電力系統15に逆潮流した瞬間に系統を解列させて逆潮流を防止する。因って、ディーゼル発電機10による発電電力は、配電線14を介して各負荷16にのみ供給される。一方、タービン発電機11による発電電力は、商用電力系統15及び各負荷16に供給可能とされている。   The power relay 13 is a device for preventing the power generated by the diesel generator 10 from flowing backward to the commercial power system 15 and prevents the reverse power flow by disconnecting the system at the moment when the commercial power system 15 flows backward. To do. Therefore, the power generated by the diesel generator 10 is supplied only to each load 16 via the distribution line 14. On the other hand, the power generated by the turbine generator 11 can be supplied to the commercial power system 15 and each load 16.

次に、廃棄物処理施設20の稼動開始時及び稼動停止時における電力供給方法について、図2に示すフロー図を用いて説明する。
(1)ディーゼル発電機10による発電電力の最大値MX1及び最小値MN1、並びに商用電力系統15から供給される買電電力の最大値MX2及び最小値MN2を設定する。
(2)廃棄物処理施設20の消費電力が廃棄物処理施設20の契約電力以上かどうか判断する(ST10)。
(3)廃棄物処理施設20の消費電力が廃棄物処理施設20の契約電力以上の場合、ディーゼル発電機10による発電電力の単価が商用電力系統15から供給される買電電力の単価以下かどうか判断する(ST11)。
Next, a power supply method at the start and stop of the operation of the waste treatment facility 20 will be described with reference to the flowchart shown in FIG.
(1) The maximum value MX1 and the minimum value MN1 of the power generated by the diesel generator 10 and the maximum value MX2 and the minimum value MN2 of the purchased power supplied from the commercial power system 15 are set.
(2) It is determined whether the power consumption of the waste treatment facility 20 is equal to or greater than the contract power of the waste treatment facility 20 (ST10).
(3) If the power consumption of the waste treatment facility 20 is equal to or greater than the contract power of the waste treatment facility 20, whether the unit price of the power generated by the diesel generator 10 is less than or equal to the unit price of the purchased power supplied from the commercial power system 15 Judgment is made (ST11).

(4)ディーゼル発電機10による発電電力の単価が商用電力系統15から供給される買電電力の単価以下の場合、ディーゼル発電機10の定格電力が廃棄物処理施設20の消費電力以下かどうか判断する(ST13)。
(5)廃棄物処理施設20の消費電力がディーゼル発電機10の定格電力以上の場合、運転パターンAにより廃棄物処理施設20内の負荷16に電力を供給する(ST15)。ここで、運転パターンAとは、ディーゼル発電機10による発電電力を最大値MX1とし、商用電力系統15から供給される買電電力を消費電力−発電電力の最大値MX1として、廃棄物処理施設20内の負荷16に電力を供給することである。
(6)一方、廃棄物処理施設20の消費電力がディーゼル発電機10の定格電力未満の場合、運転パターンCにより廃棄物処理施設20内の負荷16に電力を供給する(ST17)。ここで、運転パターンCとは、商用電力系統15から供給される買電電力を最小値MN2とし、ディーゼル発電機10による発電電力を消費電力−買電電力の最小値MN2として、廃棄物処理施設20内の負荷16に電力を供給することである。
(4) When the unit price of the power generated by the diesel generator 10 is equal to or less than the unit price of the purchased power supplied from the commercial power grid 15, it is determined whether the rated power of the diesel generator 10 is equal to or less than the power consumption of the waste treatment facility 20. (ST13).
(5) When the power consumption of the waste treatment facility 20 is equal to or higher than the rated power of the diesel generator 10, power is supplied to the load 16 in the waste treatment facility 20 by the operation pattern A (ST15). Here, the operation pattern A refers to the waste processing facility 20 with the power generated by the diesel generator 10 as the maximum value MX1 and the power purchased from the commercial power system 15 as the power consumption-maximum value MX1 of the generated power. It is to supply electric power to the load 16 inside.
(6) On the other hand, when the power consumption of the waste treatment facility 20 is less than the rated power of the diesel generator 10, power is supplied to the load 16 in the waste treatment facility 20 by the operation pattern C (ST17). Here, the operation pattern C is a waste treatment facility where the purchased power supplied from the commercial power system 15 is set to the minimum value MN2, and the generated power from the diesel generator 10 is set to the minimum value MN2 of the consumed power minus the purchased power. It is to supply electric power to the load 16 in 20.

(7)上記(3)において、ディーゼル発電機10による発電電力の単価が商用電力系統15から供給される買電電力の単価を超えている場合、廃棄物処理施設20の契約電力にディーゼル発電機10の最小発電力MN1を加えた電力が廃棄物処理施設20の消費電力以下かどうか判断する(ST14)。
(8)廃棄物処理施設20の契約電力にディーゼル発電機10の最小発電電力MN1を加えた電力が廃棄物処理施設20の消費電力以下の場合、運転パターンBにより廃棄物処理施設20内の負荷16に電力を供給する(ST16)。ここで、運転パターンBとは、商用電力系統15から供給される買電電力を最大値MX2とし、ディーゼル発電機10による発電電力を消費電力−買電電力の最大値MX2として、廃棄物処理施設20内の負荷16に電力を供給することである。
(9)一方、廃棄物処理施設20の契約電力にディーゼル発電機10の最小発電電力MN1を加えた電力が廃棄物処理施設20の消費電力を超えている場合、運転パターンDにより廃棄物処理施設20内の負荷16に電力を供給する(ST18)。ここで、運転パターンDとは、ディーゼル発電機10による発電電力を最小値MN1とし、商用電力系統15から供給される買電電力を消費電力−発電電力の最小値MN1として、廃棄物処理施設20内の負荷16に電力を供給することである。
(7) In the above (3), when the unit price of power generated by the diesel generator 10 exceeds the unit price of purchased power supplied from the commercial power system 15, the diesel generator is used as the contract power of the waste treatment facility 20. It is determined whether the power obtained by adding 10 minimum generated power MN1 is equal to or lower than the power consumption of the waste disposal facility 20 (ST14).
(8) When the power obtained by adding the minimum generated power MN1 of the diesel generator 10 to the contracted power of the waste treatment facility 20 is equal to or less than the power consumption of the waste treatment facility 20, the load in the waste treatment facility 20 according to the operation pattern B Power is supplied to 16 (ST16). Here, the operation pattern B means that the purchased power supplied from the commercial power system 15 is the maximum value MX2, and the power generated by the diesel generator 10 is the consumed power—the maximum value MX2 of the purchased power. It is to supply electric power to the load 16 in 20.
(9) On the other hand, when the power obtained by adding the minimum generated power MN1 of the diesel generator 10 to the contract power of the waste treatment facility 20 exceeds the power consumption of the waste treatment facility 20, the waste treatment facility is operated according to the operation pattern D. Electric power is supplied to the load 16 in 20 (ST18). Here, the operation pattern D refers to the waste processing facility 20 with the power generated by the diesel generator 10 as the minimum value MN1 and the purchased power supplied from the commercial power system 15 as the power consumption-minimum value MN1 of the generated power. It is to supply electric power to the load 16 inside.

(10)上記(2)において、廃棄物処理施設20の消費電力が廃棄物処理施設20の契約電力未満の場合、ディーゼル発電機10による発電電力の単価が商用電力系統15から供給される買電電力の単価以下かどうか判断する(ST12)。
(11)ディーゼル発電機10による発電電力の単価が商用電力系統15から供給される買電電力の単価以下の場合、運転パターンCにより廃棄物処理施設20内の負荷16に電力を供給する(ST17)。
(12)一方、ディーゼル発電機10による発電電力の単価が商用電力系統15から供給される買電電力の単価を超えている場合、DG停止とする(ST19)。即ち、ディーゼル発電機10を停止して廃棄物処理施設20内の負荷16への電力供給は買電電力のみとする。
(10) In (2) above, when the power consumption of the waste treatment facility 20 is less than the contract power of the waste treatment facility 20, the unit price of the power generated by the diesel generator 10 is supplied from the commercial power system 15 It is determined whether the unit price is equal to or less than the unit price of power (ST12).
(11) When the unit price of power generated by the diesel generator 10 is equal to or less than the unit price of purchased power supplied from the commercial power system 15, power is supplied to the load 16 in the waste treatment facility 20 by the operation pattern C (ST17). ).
(12) On the other hand, when the unit price of the power generated by the diesel generator 10 exceeds the unit price of the purchased power supplied from the commercial power system 15, DG is stopped (ST19). That is, the diesel generator 10 is stopped and the power supply to the load 16 in the waste treatment facility 20 is only purchased power.

なお、ディーゼル発電機10の運転制御において、ディーゼル発電機10が停止と運転を繰り返す状態は、機器保護のうえから望ましくない。そのため、ディーゼル発電機10の停止と運転の間隔を10分以上空けることが望ましい。また、運転パターンの切替についても、チャタリング(過度の運転パターンの変更)を防止するため、1分以上の間隔を空けることが望ましい。   In the operation control of the diesel generator 10, the state in which the diesel generator 10 repeatedly stops and operates is not desirable from the viewpoint of equipment protection. For this reason, it is desirable to leave the interval between the stop and operation of the diesel generator 10 for 10 minutes or more. Also, with regard to switching of operation patterns, it is desirable to leave an interval of 1 minute or more in order to prevent chattering (excessive change of the operation pattern).

表1は、6つのケースを想定し、各ケースが如何なる運転パターンになるか示した表である。但し、ディーゼル発電機による発電電力の最大値は2000kW、最小値は500kW、商用電力系統から供給される買電電力の最大値は850kW、最小値は50kWとしている。   Table 1 is a table showing what operation patterns each case assumes assuming six cases. However, the maximum value of the power generated by the diesel generator is 2000 kW, the minimum value is 500 kW, the maximum value of the purchased power supplied from the commercial power system is 850 kW, and the minimum value is 50 kW.

Figure 2013229999
Figure 2013229999

ケース1の場合、消費電力が2700kWで契約電力900kWを超えているため、発電単価10円/kWと買電単価12円/kWが比較される(ST11)。発電単価が買電単価以下であるため、ディーゼル発電機の定格電力2000kWと消費電力2700kWが比較される(ST13)。消費電力がディーゼル発電機の定格電力以上であるため、ディーゼル発電機は最大発電電力2000kWで運転され、買電電力は2700kW−2000kW=700kWとなる(運転パターンA)。   In case 1, since the power consumption is 2700 kW and exceeds the contract power 900 kW, the power generation unit price 10 yen / kW and the power purchase unit price 12 yen / kW are compared (ST11). Since the power generation unit price is equal to or less than the power purchase unit price, the rated power of 2000 kW of the diesel generator is compared with the power consumption of 2700 kW (ST13). Since the power consumption is equal to or higher than the rated power of the diesel generator, the diesel generator is operated with a maximum generated power of 2000 kW, and the purchased power is 2700 kW-2000 kW = 700 kW (operation pattern A).

ケース2の場合、消費電力が契約電力を超えているため、発電単価12円/kWと買電単価10円/kWが比較される(ST11)。発電単価が買電単価を超えているため、契約電力900kWにディーゼル発電機の最小発電電力500kWを加えた電力1400kWと消費電力2700kWが比較される(ST14)。契約電力にディーゼル発電機の最小発電電力を加えた電力が消費電力以下であるため、買電電力を最大値である850kW、ディーゼル発電機の発電電力を2700kW−850kW=1850kWとして運転される(運転パターンB)。   In case 2, since the power consumption exceeds the contracted power, the power generation unit price 12 yen / kW and the power purchase unit price 10 yen / kW are compared (ST11). Since the power generation unit price exceeds the power purchase unit price, the power 1400 kW obtained by adding the minimum power generation 500 kW of the diesel generator to the contract power 900 kW and the power consumption 2700 kW are compared (ST14). Since the power obtained by adding the minimum generated power of the diesel generator to the contract power is equal to or less than the consumed power, the purchased power is set to a maximum value of 850 kW, and the generated power of the diesel generator is set to 2700 kW−850 kW = 1850 kW Pattern B).

ケース3の場合、消費電力が1800kWで契約電力900kWを超えているため、発電単価10円/kWと買電単価12円/kWが比較される(ST11)。発電単価が買電単価以下であるため、ディーゼル発電機の定格電力2000kWと消費電力1800kWが比較される(ST13)。消費電力がディーゼル発電機の定格電力を下回っているため、買電電力を最小値である50kW、ディーゼル発電機の発電電力を1800kW−50kW=1750kWとして運転される(運転パターンC)。   In case 3, since the power consumption is 1800 kW and exceeds the contract power 900 kW, the power generation unit price 10 yen / kW and the power purchase unit price 12 yen / kW are compared (ST11). Since the power generation unit price is equal to or less than the power purchase unit price, the rated power of 2000 kW of the diesel generator and the power consumption of 1800 kW are compared (ST13). Since the power consumption is lower than the rated power of the diesel generator, the operation is performed with the purchased power as the minimum value of 50 kW and the generated power of the diesel generator as 1800 kW-50 kW = 1750 kW (operation pattern C).

ケース4の場合、消費電力が800kWで契約電力900kW未満であるため、発電単価10円/kWと買電単価12円/kWが比較される(ST12)。発電単価が買電単価以下であるため、買電電力を最小値である50kW、ディーゼル発電機の発電電力を800kW−50kW=750kWとして運転される(運転パターンC)。   In case 4, since the power consumption is 800 kW and less than the contract power 900 kW, the power generation unit price 10 yen / kW and the power purchase unit price 12 yen / kW are compared (ST12). Since the power generation unit price is equal to or less than the power purchase unit price, the operation is performed with the purchased power as a minimum value of 50 kW and the generated power of the diesel generator as 800 kW-50 kW = 750 kW (operation pattern C).

ケース5の場合、消費電力が1200kWで契約電力900kWを超えているため、発電単価12円/kWと買電単価10円/kWが比較される(ST11)。発電単価が買電単価を超えているため、契約電力900kWにディーゼル発電機の最小発電電力500kWを加えた電力1400kWと消費電力1200kWが比較される(ST14)。契約電力にディーゼル発電機の最小発電電力を加えた電力が消費電力を超えているため、ディーゼル発電機は最小発電電力500kWで運転され、買電電力は1200kW−500kW=700kWとなる(運転パターンD)。   In case 5, since the power consumption is 1200 kW and exceeds the contract power 900 kW, the power generation unit price 12 yen / kW and the power purchase unit price 10 yen / kW are compared (ST11). Since the power generation unit price exceeds the power purchase unit price, the power 1400 kW obtained by adding the minimum power generation 500 kW of the diesel generator to the contract power 900 kW and the power consumption 1200 kW are compared (ST14). Since the power obtained by adding the minimum generated power of the diesel generator to the contract power exceeds the consumed power, the diesel generator is operated with a minimum generated power of 500 kW, and the purchased power is 1200 kW-500 kW = 700 kW (operation pattern D ).

ケース6の場合、消費電力が800kWで契約電力900kW未満であるため、発電単価12円/kWと買電単価10円/kWが比較される(ST12)。発電単価が買電単価を超えているため、ディーゼル発電機が停止され、買電電力800kWのみが供給される(運転パターンD)。   In case 6, since the power consumption is 800 kW and the contract power is less than 900 kW, the power generation unit price 12 yen / kW and the power purchase unit price 10 yen / kW are compared (ST12). Since the power generation unit price exceeds the power purchase unit price, the diesel generator is stopped and only the purchased power 800 kW is supplied (operation pattern D).

図3(A)〜(D)は、廃棄物処理施設の稼動開始時における廃棄物処理施設の電力状況をシミュレーションしたグラフである。上記シミュレーションは、夏季(7〜9月)の平日を想定し、10〜17時を重負荷時間として買電単価15円/kW、8〜10時及び17〜22時を昼間時間として買電単価11円/kW、22〜8時を夜間時間として買電単価8円/kWとした。一方、ディーゼル発電機による発電単価については、燃料費は50円/L、2000kW/450Lとし、発電単価11.25円/kWとした。
なお、契約電力やディーゼル発電機の定格電力等その他の条件は、表1のケースと同様である。
3A to 3D are graphs simulating the power status of the waste treatment facility at the start of operation of the waste treatment facility. The above simulation assumes a weekday in the summer (July to September), a power purchase unit price of 15 yen / kW with a heavy load time of 10 to 17:00, a power purchase unit price with a daytime of 8 to 10 and 17 to 22:00 The unit price of power purchase was 8 yen / kW, with 11 yen / kW and 22-8 o'clock as night time. On the other hand, regarding the unit price of power generated by the diesel generator, the fuel cost was 50 yen / L, 2000 kW / 450 L, and the power generation price was 11.25 yen / kW.
Other conditions such as contract power and rated power of the diesel generator are the same as in the case of Table 1.

廃棄物処理施設の稼動開始時であるため、廃棄物処理施設の消費電力は徐々に上昇している(図3(A)参照)。実施例の場合、2日目の10〜16時の間において買電電力が50kWになっているのに対し、従来の電力供給方法による比較例の場合、2日目の6時以降の買電電力はほぼ800kWで一定している(図3(B)参照)。逆に、2日目の10〜16時の間におけるディーゼル発電機による発電電力は、比較例に比べて実施例のほうが大きくなっている。その結果、実施例と比較例の電力コストを比較した場合、2日目の10〜16時の間において、実施例のほうが比較例に比べて電力コストが安くなっていることがわかる。なお、上記電力コストの差は、燃料費が安くなればなるほど大きくなる。   Since it is at the start of operation of the waste treatment facility, the power consumption of the waste treatment facility is gradually increasing (see FIG. 3A). In the case of the example, the purchased power is 50 kW between 10 and 16:00 on the second day, whereas in the comparative example by the conventional power supply method, the purchased power after 6:00 on the second day is It is almost constant at 800 kW (see FIG. 3B). On the contrary, the power generated by the diesel generator between 10 and 16:00 on the second day is larger in the example than in the comparative example. As a result, when the power costs of the example and the comparative example are compared, it can be seen that the power cost of the example is lower than that of the comparative example between 10 and 16:00 on the second day. Note that the difference in power cost increases as the fuel cost decreases.

以上、本発明の一実施の形態について説明してきたが、本発明は何ら上記した実施の形態に記載の構成に限定されるものではなく、特許請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。例えば、上記実施の形態では、ディーゼル発電機の運転は廃棄物処理施設の稼動開始時及び稼動停止時を想定しているが、燃料油が安価な場合、ディーゼル発電機による電力を施設内の設備に供給し、タービン発電機による電力を売電してもよい。   Although one embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above-described embodiment, and is within the scope of matters described in the claims. Other possible embodiments and modifications are also included. For example, in the above embodiment, it is assumed that the operation of the diesel generator is at the start and stop of the operation of the waste treatment facility, but when the fuel oil is cheap, the power from the diesel generator is installed in the facility. The power generated by the turbine generator may be sold.

10:ディーゼル発電機、11:タービン発電機、12:変圧器、13:電力継電器、14:配電線、15:商用電力系統、16:負荷、20:廃棄物処理施設 10: Diesel generator, 11: Turbine generator, 12: Transformer, 13: Power relay, 14: Distribution line, 15: Commercial power system, 16: Load, 20: Waste treatment facility

Claims (3)

施設外への送電が可能なタービン発電機と施設外への送電ができないディーゼル発電機とを備える廃棄物処理施設における電力供給方法であって、
前記廃棄物処理施設の契約電力と該廃棄物処理施設の消費電力の大小、及び商用電力系統から供給される買電電力の単価と前記ディーゼル発電機による発電電力の単価の大小に応じて、前記ディーゼル発電機による発電電力と前記買電電力の供給比率を変化させることを特徴とする廃棄物処理施設における電力供給方法。
A power supply method in a waste treatment facility comprising a turbine generator capable of power transmission outside the facility and a diesel generator capable of power transmission outside the facility,
According to the contract power of the waste treatment facility and the power consumption of the waste treatment facility, and the unit price of purchased power supplied from a commercial power system and the unit price of power generated by the diesel generator, A power supply method in a waste treatment facility, wherein a supply ratio between power generated by a diesel generator and the purchased power is changed.
請求項1記載の廃棄物処理施設における電力供給方法において、前記ディーゼル発電機による発電電力の最大値MX1及び最小値MN1、並びに前記買電電力の最大値MX2及び最小値MN2を予め設定しておき、
(a)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力以上、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価以下のとき、前記ディーゼル発電機による発電電力を前記最大値MX1もしくは前記買電電力を前記最小値MN2に維持して前記廃棄物処理施設内の負荷に電力を供給し、
(b)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力以上、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価を超えるとき、前記ディーゼル発電機による発電電力を前記最小値MN1もしくは前記買電電力を前記最大値MX2に維持して前記廃棄物処理施設内の負荷に電力を供給し、
(c)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力未満、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価以下のとき、前記買電電力を前記最小値MN2に維持して前記廃棄物処理施設内の負荷に電力を供給し、
(d)前記廃棄物処理施設の消費電力が前記廃棄物処理施設の契約電力未満、且つ前記ディーゼル発電機による発電電力の単価が前記買電電力の単価を超えるとき、前記ディーゼル発電機を停止して前記買電電力のみにより前記廃棄物処理施設内の負荷に電力を供給することを特徴とする廃棄物処理施設における電力供給方法。
2. The power supply method in the waste treatment facility according to claim 1, wherein a maximum value MX1 and a minimum value MN1 of power generated by the diesel generator and a maximum value MX2 and a minimum value MN2 of the purchased power are set in advance. ,
(A) When the power consumption of the waste treatment facility is equal to or greater than the contract power of the waste treatment facility and the unit price of the generated power by the diesel generator is equal to or less than the unit price of the purchased power, the generated power by the diesel generator Maintaining the maximum value MX1 or the purchased power at the minimum value MN2 to supply power to the load in the waste treatment facility,
(B) When the power consumption of the waste treatment facility is equal to or greater than the contract power of the waste treatment facility and the unit price of the generated power by the diesel generator exceeds the unit price of the purchased power, the generated power by the diesel generator Maintaining the minimum value MN1 or the purchased power at the maximum value MX2 to supply power to the load in the waste treatment facility,
(C) When the power consumption of the waste treatment facility is less than the contract power of the waste treatment facility and the unit price of the generated power by the diesel generator is equal to or less than the unit price of the purchased power, the purchased power is reduced to the minimum Maintaining the value MN2 to supply power to the load in the waste disposal facility;
(D) When the power consumption of the waste treatment facility is less than the contracted power of the waste treatment facility and the unit price of the power generated by the diesel generator exceeds the unit price of the purchased power, the diesel generator is stopped. A power supply method in a waste treatment facility, wherein power is supplied to a load in the waste treatment facility only by the purchased power.
請求項1又は2記載の廃棄物処理施設における電力供給方法において、前記廃棄物処理施設の稼動開始時及び稼動停止時に前記ディーゼル発電機を運転することを特徴とする廃棄物処理施設における電力供給方法。   The power supply method in the waste treatment facility according to claim 1 or 2, wherein the diesel generator is operated at the start and stop of operation of the waste treatment facility. .
JP2012100212A 2012-04-25 2012-04-25 Power supply method in waste treatment facility Pending JP2013229999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012100212A JP2013229999A (en) 2012-04-25 2012-04-25 Power supply method in waste treatment facility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012100212A JP2013229999A (en) 2012-04-25 2012-04-25 Power supply method in waste treatment facility

Publications (1)

Publication Number Publication Date
JP2013229999A true JP2013229999A (en) 2013-11-07

Family

ID=49677130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012100212A Pending JP2013229999A (en) 2012-04-25 2012-04-25 Power supply method in waste treatment facility

Country Status (1)

Country Link
JP (1) JP2013229999A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104166946A (en) * 2014-08-15 2014-11-26 国家电网公司 Standby and peak shaving auxiliary service cost allocation method facilitating new energy grid-connected consumption
WO2019159416A1 (en) * 2018-02-19 2019-08-22 本田技研工業株式会社 Power supply system and power supply device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104166946A (en) * 2014-08-15 2014-11-26 国家电网公司 Standby and peak shaving auxiliary service cost allocation method facilitating new energy grid-connected consumption
CN104166946B (en) * 2014-08-15 2018-01-19 国家电网公司 Promote the standby and peak regulation assistant service cost sharing method of new-energy grid-connected consumption
WO2019159416A1 (en) * 2018-02-19 2019-08-22 本田技研工業株式会社 Power supply system and power supply device
US11799294B2 (en) 2018-02-19 2023-10-24 Honda Motor Co., Ltd. Supplying at least portion of excess power from one portable power supply device to another portable power supply device

Similar Documents

Publication Publication Date Title
JP6195206B2 (en) Power supply system, power converter, measuring point switching device
WO2012090709A1 (en) Power control apparatus and distributed power supply system
JP5934041B2 (en) Power system, apparatus and method
JP2014230455A (en) Power generator
JP2004194485A (en) Energy system
WO2012101911A1 (en) Power control device and power system
AU2021206016B2 (en) Method and system for controlling an electrical installation
JP2003199254A (en) Cogeneration system and program therefor
JP7386028B2 (en) power supply system
JP6797037B2 (en) Power controller, power control program and thermoelectric supply system
JP2013229999A (en) Power supply method in waste treatment facility
JP2020043757A (en) Power supply system
JPH06176792A (en) Power storage type heat-electricity combined supply system
JP5940263B2 (en) Power control apparatus and power control method
JP2016093081A (en) Power supply system and controller
JP2018152962A (en) Distributed power generation system, and method for giving at least part of operation plan of system to outside of system
JP2007318940A (en) Mutual power supplement controller and control method between distributed cogeneration plants for enterprise
Mukhammadiev et al. Use of pumped storage hydroelectric power plants in Uzbekistan
JP6315431B2 (en) Combined heat and power supply for adjustment
JP7386029B2 (en) power supply system
JP6654327B2 (en) Shipping power system
JP2013158132A (en) Photovoltaic power generation system
JP2006288016A (en) Operation support system of distributed power supply, carbon dioxide emission unit consumption calculation system, and distributed power supply controller
JP6747424B2 (en) Hot water storage system
JP4684119B2 (en) Installation number estimation system and cogeneration system controller