EP1859331A1 - Procede de commande de refroidissement sur un transformateur de puissance - Google Patents

Procede de commande de refroidissement sur un transformateur de puissance

Info

Publication number: EP1859331A1
Authority: EP; European Patent Office
Prior art keywords: cooling; oil; winding temperature; cooling stage; transformer
Prior art date: 2005-03-15
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.): Granted

Application number

EP05815353A

Other languages

German (de)

English (en)

Other versions

EP1859331B1 (fr

Inventor

Thorsten Krueger

Manfred Stadelmayer

Karsten Viereck

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.)

Maschinenfabrik Reinhausen GmbH

Scheubeck GmbH and Co

Original Assignee

Maschinenfabrik Reinhausen GmbH

Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG

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.)

2005-03-15

Filing date

2005-11-22

Publication date

2007-11-28

2005-11-22 Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH

2005-11-22 Priority to PL05815353T priority Critical patent/PL1859331T3/pl

2007-11-28 Publication of EP1859331A1 publication Critical patent/EP1859331A1/fr

2008-10-29 Application granted granted Critical

2008-10-29 Publication of EP1859331B1 publication Critical patent/EP1859331B1/fr

2025-11-22 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000001816 cooling Methods 0.000 title claims abstract description 60
238000000034 method Methods 0.000 title claims abstract description 21
238000004804 winding Methods 0.000 claims abstract description 22
239000002826 coolant Substances 0.000 claims abstract description 8
230000005540 biological transmission Effects 0.000 description 2
239000011159 matrix material Substances 0.000 description 2
230000001174 ascending effect Effects 0.000 description 1
238000012512 characterization method Methods 0.000 description 1
230000007423 decrease Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000004043 responsiveness Effects 0.000 description 1
230000001960 triggered effect Effects 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1

Classifications

- 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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling

Definitions

the invention relates to a method for controlling devices for cooling an oil-filled power transformer as a function of its oil or winding temperature.
Oil-filled power transformers are internationally characterized by their design and type of cooling with a 4-letter code.
the first two letters refer to the type of cooling of the transformer itself; for this there is the abbreviation ON for "Oil Natural”, OF for “Oil Forced”, OP for “Oil Forced”, but with an oil cooling system with axial pump, OD for "Oil Directed”, as well as GF for "Gas Forced” (for transformers with SF 6 cooling) as a special design
the following two letters indicate the respective type of cooling medium, for which there is AN for "Air Natural”, AF for "Air Forced”, WF for "Water Forced”.
transformers By combining different types of cooling of transformers as well as different types of cooling medium therefore exist a variety of types of transformers, which can be represented by the illustrated coding.
an oil-filled power transformer usually has several cooling stages, which can be based on different types of cooling or types of cooling medium.
the object of the invention is to provide a method that decreases the user this complex activities.
This object is achieved by a method having the features of the first claim.
this method it is only necessary to identify the type and types of cooling of the respective power transformer and to specify the above-explained letter-coded characterization of the respective type of cooling of the transformer and the cooling medium in its respective cooling stages.
These few necessary details about the power transformer are known to the user; They are included on the type plate and can be easily, easily and without transmission errors in a corresponding control unit.
the method according to the invention makes use of the circumstance that the calculation rules to be used for calculating the specific 01 and winding temperatures, including the respective variables and parameters, are clearly defined in the cited IEC and therefore mandatory for the user to use. Therefore, these values are already stored non-volatile in the factory so that practically only one parameter has to be entered manually: The 4-letter coding for each existing cooling stage of the corresponding power transformer.
the offered by the Applicant electronic control unit TAPCON ® is the 260th
Figure 1 shows the method according to the invention in a schematic representation of all sequentially proceeding process steps
Figure 2 is an expanded view of important steps in the process and the
This calculation is made in accordance with the specific requirements of IEC 354 applicable to the particular transformer. For this calculation, the top oil temperature, the load current, the load factor - that is the quotient of the load current and the rated current - and other specific ones provided by the IEC Parameter used.
the term "separate comparison" means that it is first checked whether the calculated value ⁇ exceeds the limit value S 1 for the first cooling stage, if this is the case the first cooling stage is activated and it is checked whether the calculated value ⁇ is so great that it also exceeds the threshold value ⁇ 2 of the second cooling stage, in which case the second cooling stage is also activated, and this comparison is continued in an analogous manner for any further cooling stages.
the control unit used for carrying out the method in this example has four switching contacts S1 ... S4; It is for a transformer with up to four different ones
Cooling stages 1 ... 4 usable. If fewer cooling stages are available for the respective transformer, the remaining contacts remain unused.
Cooling level 0, d. H. Normal operation is usually always called ONAN.
Cooling stages with the same type of cooling are indicated in ascending order with an index that corresponds to the number
Each cooling stage is associated with characteristic parameters, the gradient gr, the winding exponent y and the winding time constant tau, which depend on the type of transformer and the
Cooling stage 1 ... n - here as a percentage switching point in degrees Celsius above the respectively calculated
Control unit existing contacts S1 ... S4 are occupied here.
Switching contact 5 when exceeding the limit value ⁇ 4 for the last cooling stage 4 triggers a warning signal that signals that the regular cooling stages are obviously not able to
Another switching contact 6 is triggered, although the limit value for this warning message is still significantly exceeded; then the entire transformer is shut down to prevent damage.
the cooling stages 1... 3 are designed in the ONAF design and, as explained above, are therefore supplemented by an index 1.
the last cooling stage 4 in this example is of the OPAF type.
both the calculated oil temperature and the calculated winding temperature can be used as the comparison variable in the method according to the invention, which is why here consistently both types of calculated temperature are provided with the same reference symbol ⁇ . Differences arise, however, in terms of responsiveness, since the winding temperature changes much faster than the oil temperature, which follows with a certain inertia of this.

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Transformer Cooling (AREA)
Protection Of Transformers (AREA)
Housings And Mounting Of Transformers (AREA)

EP05815353A 2005-03-15 2005-11-22 Procede de commande de refroidissement sur un transformateur de puissance Expired - Lifetime EP1859331B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL05815353T PL1859331T3 (pl)	2005-03-15	2005-11-22	Sposób sterowania chłodzeniem na transformatorze mocy

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE102005011835		2005-03-15
PCT/EP2005/012455 WO2006097142A1 (fr)	2005-03-15	2005-11-22	Procede de commande de refroidissement sur un transformateur de puissance

Publications (2)

Publication Number	Publication Date
EP1859331A1 true EP1859331A1 (fr)	2007-11-28
EP1859331B1 EP1859331B1 (fr)	2008-10-29

Family

ID=35597791

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP05815353A Expired - Lifetime EP1859331B1 (fr)	2005-03-15	2005-11-22	Procede de commande de refroidissement sur un transformateur de puissance

Country Status (6)

Country	Link
EP (1)	EP1859331B1 (fr)
AT (1)	ATE412935T1 (fr)
DE (1)	DE502005005836D1 (fr)
ES (1)	ES2314737T3 (fr)
PL (1)	PL1859331T3 (fr)
WO (1)	WO2006097142A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN104035457B (zh) *	2014-05-29	2016-10-05	河北省电力建设调整试验所	一种根据变压器热老化率实时控制变压器冷却装置的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4360849A (en) *	1981-03-04	1982-11-23	Rte-Asea Corporation	Power distribution system
US6714022B2 (en) *	2001-02-20	2004-03-30	Gary Hoffman	Apparatus and method for cooling power transformers
US6906630B2 (en) *	2001-02-28	2005-06-14	General Electric Company	Transformer management system and method

2005
- 2005-11-22 EP EP05815353A patent/EP1859331B1/fr not_active Expired - Lifetime
- 2005-11-22 ES ES05815353T patent/ES2314737T3/es not_active Expired - Lifetime
- 2005-11-22 DE DE502005005836T patent/DE502005005836D1/de not_active Expired - Lifetime
- 2005-11-22 PL PL05815353T patent/PL1859331T3/pl unknown
- 2005-11-22 AT AT05815353T patent/ATE412935T1/de not_active IP Right Cessation
- 2005-11-22 WO PCT/EP2005/012455 patent/WO2006097142A1/fr not_active Ceased

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006097142A1 *

Also Published As

Publication number	Publication date
ATE412935T1 (de)	2008-11-15
WO2006097142A1 (fr)	2006-09-21
DE502005005836D1 (de)	2008-12-11
EP1859331B1 (fr)	2008-10-29
PL1859331T3 (pl)	2009-04-30
ES2314737T3 (es)	2009-03-16

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