CN104170199B - The energy-saving effect computational methods of transformer - Google Patents
The energy-saving effect computational methods of transformer Download PDFInfo
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- CN104170199B CN104170199B CN201280070204.1A CN201280070204A CN104170199B CN 104170199 B CN104170199 B CN 104170199B CN 201280070204 A CN201280070204 A CN 201280070204A CN 104170199 B CN104170199 B CN 104170199B
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- transformer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
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Abstract
The electric power evaluation system of transformer is system of the evaluation with the loss of the corresponding transformer of load, is had：Collect the electric power measuring device with the electric data such as load corresponding effective electricity, power factor, electric current；The computer for the electric data being collected into by electric power measuring device is connected, received with electric power measuring device.And, when the energy-saving effect of the transformer of the loss to evaluating transformer calculates, computer receives the electric data during transformer operating after renewal, and the loss of the transformer after renewal is obtained based on it, is exported using the difference of the loss with the transformer before renewal as loss is reduced.In addition, by the loss of the transformer before the renewal of each load factor and display in the form of the loss of the transformer after renewal is compared with the display apparatus.Thus, customer can easily carry out the comparison of existing transformer and consumption (loss) electricity of newly-installed transformer, be apparent to advantage economically.
Description
Technical field
The present invention relates to the energy-saving effect computational methods of transformer, are related to consumption (loss) electricity suitable for evaluation transformer
Power, the energy-saving effect computational methods for understanding energy-saving effect.
Background technology
The viewpoint for improving, economizing on resources for the concern to global environmental problems, concern of each enterprise to energy-conservation are carrying
It is high.
As the system for calculating energy-saving effect method, such as Patent Document 1 discloses importing good inverse of efficiency
The method that energy-saving effect is evaluated in the case of becoming device.
In addition, in patent document 2, disclose and measure circuit is set in the transformer of customer, by real-world operation state
Under electricity received as electronic data, the system of the update scheme of the transformer based on reception data recovery customer.
Prior art literature
Patent document
Patent document 1：No. 3976988 publications of Japanese Patent Publication No.
Patent document 2：Japanese Patent Publication No. 2003-85430 publications
The content of the invention
Invention technical problems to be solved
It is above-mentioned patent document 1 discloses inverter has been imported in existing equipment in the case of, according to import inverter
The difference of cumulative consumption (loss) electric power before and cumulative consumption (loss) electric power after importing inverter, computing consumption (damage
Consumption) electricity, the method for the electricity charge of calculated savings.
But for transformer, although it is same with generator and motor be categorized as electrical equipment, with generator and
Whirler as motor is different, is static machine, be the energy consumption (loss) of its own less, the electrical equipment of efficiency high.Enter
And in transformer, the considerably less amorphous alloy transformer of non-loaded loss is the very high transformer of efficiency, energy-saving effect
It is high.
So, because transformer is the good machine of efficiency (being usually more than 97%), with energy expenditure amount moving greatly
Power machinery is different, in the absence of monitoring on the change of consumption (loss) electric power changed at the time of transformer, shows because adding up
Consume the invention of the advantage caused by the saving of (loss) electric power economically.
In addition, in patent document 2, only in the case where having imported new transformer, the consumption (damage in calculation of performance indicators
Consumption) electric power difference, emphasize therefore caused by energy-saving effect.
But in the patent document 2, when customer imports new transformer, it can not understand and change after importing being present
Preceding the problem of comparing the energy-saving effect, the economic effect that have what degree.
For the present invention for solving the above problems, its object is to provide a kind of energy-saving effect calculating side of transformer
Method, it can easily carry out existing transformer and the consumption (damage changed at the time of newly-installed transformer in transformer
Consumption) electric power comparison, be apparent to accumulative advantage economically.
For solving the technological means of problem
The electric power evaluation system of the transformer of the present invention, it is to work as between load and supply unit transformer to be present to supply electricity
During power, the electric power evaluation system with the transformer of the loss of the corresponding transformer of load is evaluated, is had：Collect corresponding with load
The electric power measuring device of the electric datas such as effective electricity, power factor, electric current；It is connected, is received by electricity with electric power measuring device
The computer for the electric data that power measuring device is collected into.
Then, Calculation Estimation transformer loss transformer energy-saving effect when, above computer receive renewal after
Transformer operating when electric data, based on the electric data calculate renewal after transformer loss, after renewal
The difference of the loss in transformer before the loss and renewal of transformer exports as loss is reduced.
In addition, by the loss of the transformer before the renewal of each load factor with the loss of the transformer after renewal compared with
Form show on the display apparatus.
In addition, consumption (loss) electricity of the transformer before the renewal of time per unit and the transformer after renewal are disappeared
Expense (loss) electricity is shown on the display apparatus in the form of being compared.
In addition, the consumption (loss) by consumption (loss) electricity according to the transformer before renewal and the transformer after renewal
The energy-conservation amount of money that electricity is obtained is shown on the display apparatus in the form of saving the amount of money compared with contract.
In addition, consumption (the damage by consumption (loss) electricity according to the transformer before renewal and the transformer after renewal
Consumption) the accumulative energy-conservation amount of money changed over time obtained of electricity or amount display are on the display apparatus.
The effect of invention
In accordance with the invention it is possible to provide a kind of energy-saving effect computational methods of transformer, in industrial transformer, energy
It is enough easily to carry out existing transformer and the comparison of consumption (loss) electric power changed at the time of newly-installed transformer, it is easy to
Understand accumulative advantage economically.
Brief description of the drawings
Fig. 1 is the structure chart of the electric power evaluation system of the transformer of an embodiment of the invention.
Fig. 2 is the bar chart for the variation for representing load factor hourly.
Fig. 3 is the bar chart of the real data for the variation for representing load factor hourly.
Fig. 4 is to illustrate to consider power factor come the curve map of the situation of computational load rate according to the effective electricity of 1 hour.
Fig. 5 is to illustrate electric current under the sampling interval according to regulation come the curve map of the situation of computational load rate.
Fig. 6 is the stream for representing to obtain the poor processing before the renewal of transformer with the loss after renewal according to equivalent load rate
Cheng Tu.
Fig. 7 is the curve map with the loss of the transformer after renewal before renewal when contrast represents to change load factor.
Fig. 8 is the low-loss curve map of drop when representing to make the load factor change.
Fig. 9 is the curve map of the change of the effect for the amount of energy saving for representing the unit interval.
Figure 10 is when transformer updates, for contrasting the curve map with the comparison of the amount of energy saving of contract part.
Figure 11 is to represent the curve map because adding up effect caused by energy-conservation.
Embodiment
Illustrate an embodiment of the invention with Fig. 1 to Figure 11 below.
First, the structure of the electric power evaluation system of the transformer of an embodiment of the invention is illustrated with Fig. 1.
Fig. 1 is the structure chart of the electric power evaluation system of the transformer of an embodiment of the invention.
Present embodiment is three-phase alternating-current supply, loads the system progress of the in the case of of working with three-phase alternating current for power supply
Explanation.
The structure of the electric power evaluation system of the transformer of present embodiment, by power supply 00, transformer 10, load 20, electric power
Measuring device 30, I/F unit 40, computer 100, display device 111, keyboard 121, mouse 122, HDD140 are formed.
Power supply 00 is, for example, three-phase alternating-current supply, can be the internal electric source that external power source can also be equipment.
Transformer 10 is that the height of the voltage of the alternating electromotive force of primary side (input side) is entered into line translation using electromagnetic induction,
To the electric power equipment of secondary side (outlet side) output.In present embodiment, transformer is three-phase transformer.
Load 20 is the machine of real consumption electric power in a device, e.g. motor, compressor etc..
Electric power measuring device 30 is for measuring electric current, voltage, electrical power, electricity under exchanging, collecting the device of data.
I/F unit 40 is the unit for making electric power measuring device 30 be connected with computer 100, with electric power measuring device 30
Connected by special order wire, be connected with computer 100 by general serial i F.
Computer 100 is CPU (Central Processing Unit) 101, serial i F102, main storage means 103, figure
Shape IF110, input and output IF120, auxilary unit IF130 are by way of bus combination.
Each portion of CPU101 control computers 100, main storage means 103 will be loaded into for the program that electric power is evaluated and held
OK.
Serial i F102 is the interface for being connected with I/F unit 40.
Main storage means 103 are generally made up of volatile storages such as RAM, storage CPU101 perform program, reference
Data.
Figure IF110 is the interface for being used to connect the display devices 111 such as LCD (Liquid Crystal Display).
Input and output IF120 is the interface for connecting input/output unit.In Fig. 1 example, the He of keyboard 121 is connected with
Mouse 122 as pointer device.
Auxilary unit IF130 is to be used to connect HDD (Hard Disk Drive) 140 and DVD drive (Digital
Versatile Disk) auxilary unit such as (not shown) interface.
HDD140 has the memory capacity of Large Copacity, stores the data collection program for performing present embodiment
141st, power system calculation program 142, display program 143, electricity charge exchange program 144.
Data collection program 141 is the program for collecting data from electric power measuring device 30.
Power system calculation program 142 is the program for being counted, being processed to the data of collection.
Show that program 143 is for the data after the data being collected into and processing to be shown using table or curve map
Program.
Electricity charge exchange program 144 is to be used to that the program that (loss) electricity is scaled the electricity charge will to be consumed.
Then, illustrate that the electric power evaluation system of the transformer of an embodiment of the invention carries out with Fig. 2 to Fig. 8
One electric power evaluation method.
First, concept and the actual measurement of load factor are illustrated with Fig. 2 and Fig. 3.
Fig. 2 is the bar chart for the variation for representing load factor hourly.
Fig. 3 is the bar chart of the real data for the variation for representing load factor hourly.
Loss reducing effect computational methods when being updated to the transformer newly imported from existing transformer, it was usually in the past
Calculate the load factor of " during certain " after renewal, the damage of the transformer before being updated based on the load factor according to performance Index Calculation
Consumption, and the loss of the transformer after being updated according to performance Index Calculation, the method that effect is calculated by their difference.
Originally " load loss ", " non-loaded loss " calculating change of the equivalent load rate according to described in performance indications to be used
The loss of depressor, but the calculating of equivalent load rate is complicated, so typically more use Rate of average load, in the feelings more than load change
May correctness deficiency under condition.In addition, the calculating of the loss is nor continuously calculated, but mostly with monthly 1 time or
The frequency of annual 1 time manually carries out loss calculation.
Here, in present embodiment, as described below according to equivalent load rate, pass through the automatically computed losses of computer 100.
, be on the basis of load factor in order to determine the energy loss of transformer.The duration of runs of actual transformer is complicated
Ground changes, so splitting to diurnal load diagram by the unit interval, digital simulation is the equivalent load rate of stair-stepping bar chart.
Load factor is expressed by following (formula 1).
Load factor=(apparent energy)/transformer capacity
=(effective power ÷ power factors)/transformer capacity
≈ (effective electricity ÷ power factors)/transformer capacity ... (formula 1)
Equivalent load rate when sampling interval=1 hour, period are 1, is obtained by following (formula 2) in the context of fig. 3.
【Number 1】
Equivalent load rate：... (formula 2)
In addition, the Rate of average load in the case of Fig. 3 is obtained by following (formula 3).
【Number 2】
Rate of average load：... (formula 3)
Then, with Fig. 4~Fig. 6 illustrate according to load factor obtain because transformer renewal caused by Dissipation change processing.
Fig. 4 is to illustrate to consider power factor come the curve map of the situation of computational load rate according to the effective electricity of 1 hour.
Fig. 5 is the curve map for the situation for illustrating the Current calculation load factor under the sampling interval according to regulation.
Fig. 6 is the stream for representing to obtain the poor processing before the renewal of transformer with the loss after renewal according to equivalent load rate
Cheng Tu.
The first method of load factor is obtained, is that electric power measuring device 30 collects effective electricity and power factor, according to them
The method obtained.Herein, effective electricity is the effective electricity of 1 hour as shown in Figure 4.
The second method of load factor is obtained, is the electric current under the sampling interval as defined in electric power measuring device 30 is collected, according to
The method that they are obtained.
As shown in figure 5, the method for obtaining electric current is original method for the consideration method of load factor, but because sampling
Interval is limited, so being positioned as method simpler than first method.
Then, illustrate to obtain the poor processing with the loss after renewal before the renewal of transformer with Fig. 6.
First, the equivalent load rate (S01) of the transformer after renewal is obtained as stated above according to following (formula 4).In addition,
Load factor before renewal can provide from outside, can also use the value for measuring and obtaining as stated above.
【Number 3】
... (formula 4)
Herein, Pe is the equivalent load rate obtained, and Pi is i-th of load factor of the load factor or sampling in the i of section, is existed
It is N number of.For example, in example above, Pi is the load factor in 1 hour section, is during which 1, so N=24.
Then, the total losses W1 [kW] of the transformer after renewal is calculated according to equivalent load rate according to following (formula 5)
(S02)。
W1={ non-loaded loss [W]+load loss [W] × (equivalent load rates)2}/1000×N
... (formula 5)
Then, the total losses W2 [kW] of the transformer before renewal is calculated according to equivalent load rate according to following (formula 6)
(S03)。
W2={ non-loaded loss [W]+load loss [W] × (equivalent load rates)2}/1000×N
... (formula 6)
Then, the reduction before and after the renewal of transformer is obtained according to following (formula 7) Δ W [kW] (S04) is lost.
Δ W=W2-W1 ... (formula 7)
Then, reduction loss Δ W [kW] (S05) is shown on curve map or form.
Then, example of the display because of energy-saving effect caused by renewal transformer is illustrated with Fig. 7 and Fig. 8.
Fig. 7 is the curve map with the loss of the transformer after renewal before renewal when contrast represents to change load factor.
Fig. 8 is the low-loss curve map of drop when representing to make the load factor change.
As shown in fig. 7, the loss of transformer shows relative to the curve map of load factor quadratic function.Load factor=0%
When loss be the loss also occurred when not loading i.e. it is non-loaded loss (iron loss).In order to suppress the loss, it is necessary to using damage
Consume iron core of few material as transformer, using non-crystaline amorphous metal as the amorphous alloy transformer of the iron core of transformer in, energy
It is enough to suppress the non-loaded loss to greatest extent.
During load factor=100%, load loss (copper loss) is maximum, and the loss of transformer is also maximum.
Reduction loss Δ W before and after the renewal of transformer is as shown in Figure 8.
The poor w2 of loss during load factor=0% is maximum, describes conic section afterwards, be gradually reduced to load factor=
The poor w1 of loss when 100%.
If showing the curve in the display device 111 of system, user just can visually understand energy-saving effect.
Then, illustrate what the electric power evaluation system of the transformer of an embodiment of the invention was carried out with Fig. 9 and Figure 11
Second electric power evaluation method.
Fig. 9 is the curve map of the change of the effect for the amount of energy saving for representing time per unit.
Figure 10 is when transformer updates, for contrasting the curve map with the comparison of the amount of energy saving of contract part.
Figure 11 be represent because of energy-conservation and caused by add up the curve map of effect.
As shown in figure 9, the consumption that the time per unit after renewal transformer can be saved is shown in display device 111
The change of (loss) electricity (amount of energy saving).Thereby, it is possible to directly visually understand because import transformer and caused by benefit.More
Consumption (loss) electric power of transformer before new can use the data shown in Fig. 1, can also be obtained according to performance indications.
In addition, when importing transformer, in the case of the contract for having the energy-conservation amount of money between customer, as shown in Figure 10, display
The energy-conservation amount of money under time change.The amount of money is saved according to consumption (loss) electric power data being collected into by electricity charge exchange program 144
Calculated.The energy-conservation amount of money between customer is set to P [yen].
And then as shown in figure 11, the energy-conservation amount of money is added up and caused by because importing transformer by display, customer can be visual
Ground understands the benefit for importing the high transformer of new energy-saving effect.
The explanation of symbol
00 ... power supply, 10 ... transformers, 20 ... loads, 30 ... electric power measuring devices, 40 ... I/F units, 100 ... computers,
111 ... display devices, 121 ... keyboards, 122 ... mouses, 140 ... HDD.
Claims (6)
1. a kind of energy-saving effect computational methods of transformer, carry out supply electric power when transformer between load and supply unit be present
When, evaluate the loss with the corresponding transformer of load, it is characterised in that：
As electric power measuring device collect and the corresponding electric data of load,
With being connected with the electric power measuring device, the calculating for the electric data being collected into by the electric power measuring device is received
Machine,
It is described electric when the transformer that the computer receives after renewal from the electric power measuring device per the stipulated time operates
Data, the load factor of per stipulated time of the transformer after being updated based on the electric data computing, according to this per the stipulated time
Equivalent load rate of the multiple value computings of load factor per specified time limit, based on the equivalent load factor, load loss and non-loaded damage
The loss of transformer after consumption every specified time limit, continuously computing updated, also, based on the change before the renewal obtained in advance
The load loss of depressor, non-loaded loss and equivalent load rate, the continuously change before renewal described in computing per the specified time limit
The loss of depressor, using the difference of the loss of the transformer after the loss of the transformer before the renewal and the renewal as reduction
It is lost continuously to export.
2. the energy-saving effect computational methods of transformer as claimed in claim 1, it is characterised in that：
The electric data is effective power and power factor, or electric current.
3. the energy-saving effect computational methods of transformer as claimed in claim 1, it is characterised in that：
The loss of transformer before the renewal of each load factor is shown in the form of the loss of the transformer after renewal is compared with
Show on the display apparatus.
4. the energy-saving effect computational methods of transformer as claimed in claim 1, it is characterised in that：
By the loss of electricity of the transformer after the loss of electricity of the transformer before the renewal of time per unit and renewal to be compared
Compared with form show on the display apparatus.
5. the energy-saving effect computational methods of transformer as claimed in claim 1, it is characterised in that：
The energy-conservation amount of money that the loss of electricity of transformer after loss of electricity according to the transformer before renewal and renewal is obtained or
Amount and the contract energy-conservation amount of money or amount, are shown on the display apparatus in the form of being compared.
6. the energy-saving effect computational methods of transformer as claimed in claim 1, it is characterised in that：
Changed over time what the loss of electricity of the transformer after the loss of electricity according to the transformer before renewal and renewal was obtained
The accumulative energy-conservation amount of money or amount display on the display apparatus.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/054025 WO2013124960A1 (en) | 2012-02-20 | 2012-02-20 | Method for calculating energy saving effect of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104170199A CN104170199A (en) | 2014-11-26 |
| CN104170199B true CN104170199B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280070204.1A Active CN104170199B (en) | 2012-02-20 | 2012-02-20 | The energy-saving effect computational methods of transformer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5937670B2 (en) |
| CN (1) | CN104170199B (en) |
| WO (1) | WO2013124960A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698269B (en) * | 2015-03-12 | 2017-11-28 | 国家电网公司 | A kind of transformer transformation is front and rear to save quantity of electricity measuring and calculating device and measuring method |
| JP6101319B2 (en) * | 2015-08-14 | 2017-03-22 | 株式会社ジェルシステム | Power loss monitoring system and cubicle |
| CN105976269B (en) * | 2016-05-20 | 2020-10-09 | 广东芬尼克兹节能设备有限公司 | Centralized monitoring method and system for unit electric quantity |
| CN113092914B (en) * | 2021-04-09 | 2022-11-29 | 广东电网有限责任公司 | Transformer loss monitoring method and transformer loss monitoring system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3976988B2 (en) * | 1999-09-13 | 2007-09-19 | 株式会社日立製作所 | Calculation method of power saving effect in energy saving driving support method |
| JP2003085430A (en) * | 2001-09-12 | 2003-03-20 | Hitachi Ltd | Order reception supporting method for transformer |
| CN101741097B (en) * | 2009-12-29 | 2014-02-12 | 中国电力科学研究院 | Distribution transformer capacity sequence grade optimizing method |
-
2012
- 2012-02-20 WO PCT/JP2012/054025 patent/WO2013124960A1/en active Application Filing
- 2012-02-20 JP JP2014500774A patent/JP5937670B2/en active Active
- 2012-02-20 CN CN201280070204.1A patent/CN104170199B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013124960A1 (en) | 2013-08-29 |
| JP5937670B2 (en) | 2016-06-22 |
| CN104170199A (en) | 2014-11-26 |
| JPWO2013124960A1 (en) | 2015-05-21 |
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