阅读说明：本技术 低损耗超高压特高压变压器 (Low-loss ultrahigh voltage transformer ) 是由 不公告发明人 于 2021-05-14 设计创作，主要内容包括：低损耗超高压特高压变压器,技术领域属电力学科,这项专利主要解决现在执行使用的各型超高压特高压变压器损耗大,浪费了大量的电力能源,在长期内增加了不必要的巨大经济损失。具体解决这项技术方案是通过“温导定律”的发明,在超高压特高压变压器设计上的应用,从而达到降低绕组电阻,电阻越小损耗就越小,使超高压特高压变压器损耗降低能达到表[0010]、[0011]设定的最佳有益效果值。但是人们在这项科技道路上的终极目标是零损耗,随着超导材料的发展,在不久的将来一定能实现。(A low-loss ultra-high voltage transformer belongs to the technical field of electric power science, and mainly solves the problems that various ultra-high voltage transformers used in the prior art are large in loss, waste a large amount of electric power energy and increase unnecessary huge economic loss in a long term. The technical scheme is that the invention of 'temperature conduction law' is applied to the design of an extra-high voltage and extra-high voltage transformer, so that the winding resistance is reduced, the smaller the resistance is, the smaller the loss is, and the loss reduction of the extra-high voltage and extra-high voltage transformer can reach the optimal beneficial effect values set by the tables [0010] and [0011 ]. However, the ultimate goal of the people on the scientific road is zero loss, and the zero loss can be realized in the near future along with the development of the superconducting materials.)

1.[0010] and [0011] in the table, the low-loss extra-high voltage transformer 1 level manufactured finished product loss parameter and energy-saving parameter series content are designated by the low-loss 1 level setting

2, the loss parameters and energy-saving parameter series contents of the finished product manufactured by the 2-level low-loss extra-high voltage transformer with the low-loss 2-level set and marked in the tables [0010] and [0011]

3, the loss parameters and energy-saving parameter series contents of the finished product manufactured by the low-loss extra-high voltage transformer 3 level marked by the low-loss 3 level setting in the tables [0010] and [0011]

4, the loss parameters and energy-saving parameter series contents of the finished product manufactured by 4-level low-loss extra-high voltage transformer with low loss and 4-level set and marked in the tables [0010] and [0011]

5, the loss parameters and energy-saving parameter series contents of the finished product manufactured by 5-level low-loss extra-high voltage transformer 5 marked by low-loss 5-level setting in the tables [0010] and [0011]

Loss parameters and energy-saving parameter series contents of low-loss ultra-high voltage transformer 6-level manufactured finished product designated by low-loss 6-level setting in tables [0010] and [0011]

7, the loss parameters and energy-saving parameter series contents of the finished product manufactured by 7-level low-loss extra-high voltage transformer with low loss and 7-level set and marked in the tables [0010] and [0011]

8, the loss parameters and energy-saving parameter series contents of 8-level manufactured finished product of low-loss extra-high voltage transformer with low loss and 8-level set and marked in [0010] and [0011] tables

[008] formula (c): providing technical conversion for length increasing ratio parameter of new winding wire

③

L_⊥ ⁽¹⁰⁾-newly setting the length m of the high-voltage winding conductor

L⁽²⁾-length m of the active high voltage winding conductor

S+％⁽⁹⁾-current winding wire wear area increase ratio.

10.[008] formula (v): providing new technical parameter conversion for no-load loss increase ratio

⑤

WFe_⊥ ⁽³⁰⁾New setting of no-load loss value KW

WFe⁽¹⁵⁾-current no-load loss value KW

S+％⁽⁹⁾-current winding wire wear area increase ratio.

11.[008]The formula (IV): providing new conversion of working temperature parameter for increasing ratio of winding wire sectional area to r DEG C w_⊥ ⁽¹⁴⁾＝℃w⁽²⁰⁾-2.5S+％⁽⁹⁾

℃w_⊥ ⁽¹⁴⁾New working temperature

℃w⁽²⁰⁾Working temperature 135 deg.C

S+％⁽⁹⁾-current winding wire wear area increase ratio.

12. FIG. 3 is a graph of a new resistivity parameter corresponding to an increase in the cross-sectional area of a winding wire and a decrease in the operating temperature.

The technical field is as follows: the electric power discipline.

Background field: the transformer loss parameter comparison table can fully reflect that the loss power of the ultra-high voltage and ultra-high voltage transformer used in execution is high, compared with a low-loss ultra-high voltage and ultra-high voltage transformer, a large amount of electric energy is lost, unnecessary electric energy is wasted in a long period, and huge economic loss is caused.

The invention content is as follows:

the tables [0010] and [0011] provide new technical parameters for manufacturing low-loss 1-level transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing low-loss 2-level transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing low-loss class-3 transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing of low-loss 4-level transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing low-loss 5-grade transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing low-loss 6-grade transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing of low-loss 7-grade transformer finished products.

The tables [0010] and [0011] provide new technical parameters for manufacturing low-loss 8-grade transformer finished products.

The formula [0008] provides a new technical parameter for increasing the length of the winding wire.

10. (0008) formula (iv) provides new technical parameters for the no-load loss increase ratio.

11.[0008] formula (v) provides a new working temperature parameter for the increase ratio of the cross-sectional area of the winding wire.

12. Fig. 1 shows that the increase ratio of the sectional area of the wire corresponds to a new working temperature and a new resistivity parameter.

Description of the drawings: fig. 1 is a three-phase structural schematic diagram of an extra-high voltage and extra-high voltage transformer, fig. 2 is a finished product diagram of an oil-immersed extra-high voltage and extra-high voltage transformer, and fig. 3 is a coordinate diagram of technical data of resistivity corresponding to a new working temperature and a new resistivity corresponding to a copper wire sectional area increasing ratio.

The main principle of the transformer is the magnetoelectric coupling principle, the magnetic conduction part mainly comprises an iron core, and the electric conduction part mainly comprises a winding. When the transformer operates, no-load loss and load loss are mainly generated, and the no-load loss is generated by iron core eddy current of a magnetic material and is referred to as iron loss WFe; the load loss is generated by the resistance value of the winding wire, which is called copper loss WCu for short.

The iron loss is caused by different amounts and materials of the magnetic conductive materials, and the generated eddy currents have different sizes, namely the iron loss is different, the more the magnetic conductive materials with the same materials are, the larger the iron loss is, and the less the magnetic conductive materials are, the smaller the iron loss is. The invention relates to a low-loss extra-high voltage transformer, which is designed according to a certain increase ratio on the basis of the sectional area of a winding wire of the existing extra-high voltage transformer, so that the volume of the winding is increased, the consumption of iron core materials is required to be increased, and the increase ratio of the iron core materials is equal to the increase ratio of no-load loss.

The copper loss is because of the resistivity variation and the wire length difference that the wire sectional area size is different and the temperature arouses, makes whole winding resistance size change, and the resistance is big more the copper loss just more big, and the resistance is little the copper loss just is little, and the coefficient is 9 has three component parts: 4/9 is the copper loss ratio of the high and medium voltage winding; 2/9 is the copper loss ratio of the low-voltage winding; temperature loss ratio 3/9. When the existing ultrahigh voltage transformer runs at full load, the central temperature of a winding is between 100 and 170 ℃, the average temperature is 135 ℃, which is called as working temperature w for short, so that the resistivity of a wire is increased by 50 percent from 0.0172 ohm/m of 10 ℃ to 0.0258 ohm/m, the increased resistivity generates secondary superposition loss called as temperature loss wt for short, the increase ratio of the sectional area of the winding wire corresponds to the reduction of the working temperature, the reduction of the working temperature corresponds to the reduction of the resistivity, the reduction of the resistivity reduces the resistance of the winding, the reduction of the resistance reduces the load loss, and the reduction value is called as energy saving value-w for short.

The specific implementation mode is as follows: mainly through the application of the contents of [0004], the load area of a winding wire is provided with a set of new technical data in the new design process. The method is characterized in that the resistance of a winding is reduced on the basis of implementing and designing the existing ultra-high voltage and ultra-high voltage transformer, the loss is smaller as the resistance is smaller, and the loss set value and the energy-saving set value of the low-loss ultra-high voltage and ultra-high voltage transformer can be achieved by performing step-by-step grading manufacture, the detailed contents can be seen in a table of [0010]. 0011], and meanwhile, the energy-saving value of each level can be readjusted within the range of the total energy-saving value of the low-loss ultra-high voltage and ultra-high voltage transformer according to specific requirements.

And (3) symbol coding: r⁽¹⁾Winding resistance omega (Europe)

L⁽²⁾-length m (meter) of winding wire

P⁽³⁾Resistivity 0.0172 Ω/m

S⁽⁴⁾-cross section of wire mm²

Ω⁽⁵⁾Resistance value in ohms

W⁽⁶⁾-total loss value

A⁽⁷⁾-current of conductor (an)

L+％⁽⁸⁾-wire length increase ratio

S+％⁽⁹⁾-wire loading face multiplication

L_⊥ ⁽¹⁰⁾-new high voltage line length m meters

R_⊥ ⁽¹¹⁾New resistance value omega

S_⊥ ⁽¹²⁾New wire loading area mm²

Wt°⁽¹³⁾Temperature rise loss (temperature loss)

℃w_⊥ ⁽¹⁴⁾New working temperature

WFe⁽¹⁵⁾-no load loss (no load loss)

WCu⁽¹⁶⁾-load loss (negative loss)

WR⁽¹¹⁾Loss of resistance value (resistance loss)

WB⁽¹⁸⁾-single phase loss (phase loss)

WBR⁽¹⁹⁾Loss of single-phase resistance value (loss of phase resistance)

℃w⁽²⁰⁾Working temperature 135 deg.C

WRe⁽²¹⁾-single phase low voltage resistive losses (low resistive losses)

WRh⁽²²⁾-single phase high voltage resistance losses (high resistance losses)

P_⊥ ⁽²³⁾New resistivity Ω/m

W_⊥ ⁽²⁴⁾New total loss value

WRh_⊥ ⁽²⁵⁾-new high voltage resistive losses (new high resistive losses)

WRe_⊥ ⁽²⁶⁾-new low voltage resistance loss (new low resistance loss)

WB_⊥ ⁽²⁷⁾New single phase loss value (new phase loss)

WCu_⊥ ⁽²⁸⁾New load loss (new load loss)

-W⁽²⁸⁾Loss reduction difference (energy saving)

WFe_⊥ ⁽³⁰⁾New no-load loss (new no-load loss)

The formula:

① ②W⁽⁶⁾＝A²Ω⁽⁵⁾

③ ④℃w_⊥ ⁽¹⁴⁾＝℃w⁽²⁰⁾-2.5S+％⁽⁹⁾

⑤

an example scaling procedure:

the related technical data of the 500KV oil-immersed single-phase three-winding on-load voltage regulation autotransformer 400MVA transformer are as follows:

the energy efficiency is based on GB-20052 and 2020-1 level

Low loss 1 grade

Low loss 2 stage

Low loss 3 grade

Low loss 4 grade

Low loss 5 grade

Low loss 6 grade

Low loss grade 7

Low loss 8 grade