JPH02294230A - Setting method of optimum private power generation level - Google Patents
Setting method of optimum private power generation levelInfo
- Publication number
- JPH02294230A JPH02294230A JP1115486A JP11548689A JPH02294230A JP H02294230 A JPH02294230 A JP H02294230A JP 1115486 A JP1115486 A JP 1115486A JP 11548689 A JP11548689 A JP 11548689A JP H02294230 A JPH02294230 A JP H02294230A
- Authority
- JP
- Japan
- Prior art keywords
- power generation
- generation level
- amount
- power
- actual
- 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
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 9
- 230000005611 electricity Effects 0.000 claims description 23
- 238000003303 reheating Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野】
この発明は、支払電力料金が、買電量、ｉ１ｂ追焚発電
量及び逆送量から定まる系１こお一）て、」二二己支払
電力料金を最低にする最適自家発電レベノレを設定する
方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention is based on a system in which the electricity rate to be paid is determined from the amount of electricity purchased, the amount of additional firing of electricity, and the amount of reverse transmission. The present invention relates to a method of setting an optimal private power generation level that minimizes electricity charges.
［従来の技術］
例えば、製鉄所のように、燃料となる高炉ガス、コーク
ス炉ガスが発生する工場では、これらガスを燃料として
ガス成自家発電を行ない、不足分を電力会社からの買電
で賄っている。そして、緊２（時等に備え自家発電設備
に浦の追焚ができる設６；一を備えている。[Conventional technology] For example, in factories such as steel mills that generate blast furnace gas and coke oven gas as fuel, these gases are used as fuel to generate gas-generated private power, and the shortage is made up by purchasing electricity from the electric power company. I'm paying for it. In addition, in case of emergencies, the in-house power generation equipment is equipped with a facility to reheat the ura.
しかし、従来は燃料浦が高価であり、浦追焚ｔ１１価は
買電単価より高く、特別の場合以外は浦の追焚をするこ
とは無かった。However, in the past, fuel ura was expensive, and the ura refiring price was higher than the unit price of electricity purchased, so ura was not reheated except in special cases.
［発明の解決しようとする問題点］
しかし、燃料油の価格が安くなると、時間帯によっては
買電単価が油追焚単価より高くなることがある。そこで
、このような場合には、油の追焚発電をしたほうが有利
になるが、変動する電力使用量に対し、どの程度油の追
焚をすべきかのｊｌ１断基準が無かった。[Problems to be Solved by the Invention] However, when the price of fuel oil decreases, the unit price of electricity purchase may become higher than the unit price of reheating oil depending on the time of day. Therefore, in such a case, it would be more advantageous to generate power by reheating oil, but there was no standard for determining how much reheating oil should be done in response to fluctuating power consumption.
この発明は、上記のような問題を解消できるようにした
最適自家発電レベルの設定方法を提洪することを目的と
するものである。The object of the present invention is to provide a method for setting an optimal private power generation level that can solve the above-mentioned problems.
［問題点を解決するだめの手段、作用］この発明の最適
自家発電レベルの設定方法は、支払電力料金が、買電量
、油追焚発電口及び逆送全から定まる系において、総使
用電力の変動状況を実状に合ったモデル波形に近似し、
買電量、油追焚量及び逆送量から上記支払電力材金を最
低にする最適発電レベルを求めておき、一方短時間の買
？ｌＸｍ及び逆送量の実績からその時点での実績発電レ
ベルを求め、これを上記最適発電レベルにするよう発電
ロを調整することである。[Means and effects for solving the problem] The method of setting the optimum in-house power generation level of the present invention is based on the method of setting the optimal private power generation level based on the total power consumption in a system where the electricity charge is determined by the amount of electricity purchased, the oil refueling power generation outlet, and the total amount of reverse feed. Approximate the fluctuation situation to a model waveform that matches the actual situation,
Find the optimal power generation level that minimizes the above-mentioned power payment amount from the amount of electricity purchased, the amount of oil reheating, and the amount of reverse feed. The actual power generation level at that point in time is determined from the actual results of lXm and the amount of reverse feed, and the power generation rate is adjusted so that this becomes the above-mentioned optimum power generation level.
こうして、買電量および逆送量の実績から求めた実績発
電レベルを、最適発電レベルに調整することにより、支
払電力料金を最低にすることができる。In this way, by adjusting the actual power generation level obtained from the actual power generation amount and reverse transmission amount to the optimum power generation level, it is possible to minimize the power charge paid.
［実施例］
以下、本発明の１実施例を三角波形近似にモデルパター
ン化した例について説明する。[Example] Hereinafter, an example in which an example of the present invention is converted into a model pattern using triangular waveform approximation will be described.
実際の総使用電力は、第１図（ａ）に示すように細かい
変動を伴いながら大きく三角波形に変動することが多い
。そこで、この変動を（ｂ）図に示すように、三角波形
にパターン化して考える。The actual total power consumption often fluctuates greatly in a triangular waveform with small fluctuations, as shown in FIG. 1(a). Therefore, consider patterning this variation into a triangular waveform as shown in Figure (b).
第２図に示すように、総使用電力が変動している場合、
ガス成発電出力より上の部分の電力が不足となる。この
不足分を買電又は油追焚で対応するが、当然単価の安い
方で対応する。即ち、買電単価が浦追焚単価より安いと
きば買電で対応するが、逆に油追焚単価が買電単価より
安いときは油の追焚で対応する。しかし、浦追焚で対応
ずる場合、追焚発本出力がＴ線をこえると、今度は逆送
量が加わってくるため油追焚発電レベルをいかに定める
べきかが問題となる。As shown in Figure 2, when the total power consumption fluctuates,
There will be a shortage of electricity above the gas generation power output. This shortfall will be covered by purchasing electricity or reheating oil, whichever has the lowest unit price. That is, when the unit price of electricity purchased is lower than the unit price of Ura re-firing, it is handled by purchasing electricity, but conversely, when the unit price of oil re-firing is lower than the unit price of electricity purchased, it is handled by re-firing oil. However, when dealing with oil refiring, when the main output of the refiring exceeds the T line, the amount of reverse feed is added, which raises the issue of how to determine the oil refiring power generation level.
そこで、買電単価ＡＣ ＞油追焚単価Ｂｃ〉逆送発電単
！ＣＣという条件のもとで、第３図に示すモデルで
支払電力料金
一買電料金＋油追焚発電費用＋逆送発電費用が最低とな
る最適発電レベルｂＳを求める。Therefore, electricity purchase unit price AC > oil reheating unit price Bc > reverse power generation unit! Under the condition of CC, the optimal power generation level bS is determined using the model shown in FIG. 3, which minimizes the paid power fee, the power purchase fee, the oil additional combustion power generation cost, and the reverse transmission power generation cost.
支払電力料金は、 となる。The electricity charge paid is becomes.
これは、発電レベルｂについての２次関数であるため、
支払電力料金を最低にする最適発電レベルｂＳを求める
と、
となる。Since this is a quadratic function regarding the power generation level b,
The optimal power generation level bS that minimizes the paid electricity rate is determined as follows.
次に、第４図に示すモデルで、パルス取り込みされてい
る受電（買電）ｍと逆送量を用いて、過去Ｎ分間の実績
受電ｆｌＡと実績逆送１ｕＢを把握し、これらの量から
実績発電レベルｂを求める。Next, using the model shown in Figure 4, using the pulse-captured power reception (power purchase) m and the reverse transmission amount, determine the actual power reception flA and the actual reverse transmission 1uB for the past N minutes, and from these amounts, Find the actual power generation level b.
ここで、△ａｂｃの面積をＳとし、ｈ−１とすると、
Ｂ−Ｓｘｂ２ Ａ−Ｓｘ （１−ｂ） ２となり、実精
発電レベルｂは、
となる。Here, if the area of Δabc is S and h-1, then B-Sxb2 A-Sx (1-b) 2, and the actual refined power generation level b is as follows.
そこで、今後Ｎ分間は総使用電力が実績把握時と同じよ
うに変動するとして、実績発電レベルｂを、予め求めて
ある最適発電レベルｂｓにするよう発電量を調整する。Therefore, assuming that the total power consumption will fluctuate for the next N minutes in the same way as when the actual results were determined, the amount of power generation is adjusted so that the actual power generation level b becomes the optimal power generation level bs determined in advance.
例えば、第５図に示すように、実績発電レベルｂが最適
発電レベルｂｓより下がっているときは、：Ａ整ｆｉｔ
（ａ＋ｂ）だけ出力を増し発電レベルを上げる。For example, as shown in Fig. 5, when the actual power generation level b is lower than the optimum power generation level bs,
Increase the output by (a+b) to raise the power generation level.
例えば、昼間時間帯で、最適発電レベルｂＳ−０，８５
のとき、
となり、この調整Ｑ（ａ＋ｂ）だけ出力を増す。For example, during the daytime, the optimal power generation level bS-0,85
When , the output is increased by this adjustment Q(a+b).
なお、実績発電レベルが最適発電レベルを越えている場
合は、上記と同様の手順により調整ｍを求め、出力を減
ずる。Note that if the actual power generation level exceeds the optimum power generation level, the adjustment m is obtained by the same procedure as above and the output is reduced.
こうして、短時間の実績発電レベルを求め、これを最適
発電レベルに調整する操作を繰返すことにより、総使用
電力の変動に対応して支払電力料金を最低にすることが
できる。In this way, by repeating the operation of determining the actual power generation level for a short time and adjusting it to the optimum power generation level, it is possible to minimize the electricity charge paid in response to fluctuations in the total power consumption.
［発明の効果］
この発明の最適自家発電レベルの設定方法はＬ記のよう
なもので、支払電力料金が買電量、浦追焚発ｆＢ 量及
び逆送量から定まる系において、支払電力料金を最低に
することができる。[Effects of the Invention] The method for setting the optimum private power generation level of this invention is as shown in L. In a system where the electricity charge is determined from the amount of purchased electricity, the amount of Ura-additional FB and the amount of reverse feed, the method of setting the optimum private power generation level of this invention is can be the lowest.
第１図は総使用電力の食動状況を三１ｆＪ波形にパター
ン化する説明図、第２図はガス成発電出力と総使用電力
との関係を示す説明図、第３図は最適発電レベルを求め
るモデル図、第４図は実績発電レベルを求めるモデル図
、第５図は調整口を求めるモデル図である。Figure 1 is an explanatory diagram that patterns the feeding status of total power consumption into a 31fJ waveform, Figure 2 is an explanatory diagram that shows the relationship between gas-generated power generation output and total power consumption, and Figure 3 is an explanatory diagram that shows the optimal power generation level. Figure 4 is a model diagram for determining the actual power generation level, and Figure 5 is a model diagram for determining the adjustment port.
Claims (1)
定まる系において、総使用電力の変動状況を実状に合っ
たモデルは波形に近似し、買電量、油追焚量及び逆送量
から上記支払電力料金を最低にする最適発電レベルを求
めておき、一方短時間の買電量及び逆送量の実績からそ
の時点での実績発電レベルを求め、これを上記最適発電
レベルにするよう発電量を調整することを特徴とする最
適自家発電レベルの設定方法。In a system where the electricity charge is determined by the amount of electricity purchased, the amount of oil reheating, and the amount of reverse feed, a model that fits the actual situation of fluctuations in total power consumption approximates the waveform, and the amount of power purchased, the amount of oil reheat, and the amount of reverse feed The optimal power generation level that minimizes the above-mentioned paid power rate is determined from the amount, and the actual power generation level at that point is determined from the short-term power purchase amount and reverse transmission amount, and this is set as the above-mentioned optimal power generation level. A method for setting an optimal private power generation level, which is characterized by adjusting the amount of power generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1115486A JPH02294230A (en) | 1989-05-09 | 1989-05-09 | Setting method of optimum private power generation level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1115486A JPH02294230A (en) | 1989-05-09 | 1989-05-09 | Setting method of optimum private power generation level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02294230A true JPH02294230A (en) | 1990-12-05 |
Family
ID=14663715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1115486A Pending JPH02294230A (en) | 1989-05-09 | 1989-05-09 | Setting method of optimum private power generation level |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02294230A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010148185A (en) * | 2008-12-17 | 2010-07-01 | Jfe Steel Corp | Generated power adjustment method of power generation facility of manufacturing plant |
-
1989
- 1989-05-09 JP JP1115486A patent/JPH02294230A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010148185A (en) * | 2008-12-17 | 2010-07-01 | Jfe Steel Corp | Generated power adjustment method of power generation facility of manufacturing plant |
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