CN110288883B - Converter transformer fault simulation platform and method - Google Patents
Converter transformer fault simulation platform and method Download PDFInfo
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- CN110288883B CN110288883B CN201910389893.6A CN201910389893A CN110288883B CN 110288883 B CN110288883 B CN 110288883B CN 201910389893 A CN201910389893 A CN 201910389893A CN 110288883 B CN110288883 B CN 110288883B
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Abstract
The invention discloses a converter transformer fault simulation platform and a method, which relate to the technical field of transformers and comprise a transformer box body, wherein an iron core is arranged in the transformer box body, a network side coil, a valve side coil and a voltage regulating coil which are mutually connected in parallel are sleeved on the iron core, and the upper end of the network side coil and the lower end of the voltage regulating coil are respectively connected with the tail ends of a first network side sleeve and a second network side sleeve through lead wires; the upper end and the lower end of the valve side coil are respectively connected with the tail ends of the first valve side sleeve and the second valve side sleeve through valve side lead wires, and a method suitable for the simulation platform is provided. The invention can simulate the actual fault condition of the converter transformer to the maximum extent, has simple equipment structure but complete functions, is easy to operate, and can provide a platform for the skill training of maintainers.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a converter transformer fault simulation platform and method.
Background
The converter transformer is a vital device in an ultra/extra-high voltage direct current transmission project, and is a core device of interfaces at both ends of rectification and inversion in an alternating current transmission system and a direct current transmission system. The investment and safe operation of the system are key and important guarantees for obtaining power generation benefits in engineering. Because of the combined action of the alternating current electric field, the direct current electric field and the magnetic field, the structure is special and complex, and the key technology is high and difficult.
At present, a fault simulation means for the converter transformer basically adopts a simulation modeling mode, the power industry increasingly requires test analysis work to be carried out close to practical application conditions, and meanwhile, the training of the application of the front-edge technology in the power industry and the skill of maintenance personnel is also urgently needed to be carried out by a proper system platform, so that the simulation modeling solution has great limitation and cannot completely reflect the practical change condition of each technical index of equipment under the fault condition.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the converter transformer fault simulation platform and the method, which can simulate the actual fault condition of the converter transformer to the maximum extent, effectively reduce the magnetic leakage in a coil wiring mode, facilitate the operation of equipment and provide a platform for the skill training of maintainers.
In order to achieve the purpose, the invention provides a converter transformer fault simulation platform which comprises a transformer box body, wherein an iron core is arranged in the transformer box body, a combined coil is sleeved on the iron core, and the combined coil comprises a net side coil, a valve side coil and a voltage regulating coil which are sequentially and concentrically sleeved from inside to outside; the lower end of the net side coil is connected with the upper end of the voltage regulating coil; it is characterized in that the preparation method is characterized in that,
the iron core is a four-column iron core, the four-column iron core comprises two main columns and two side columns, the combined coil comprises a first combined coil and a second combined coil which are respectively sleeved on the two main columns, the first combined coil comprises a first net side coil, a first valve side coil and a first pressure regulating coil which are sequentially and concentrically sleeved from inside to outside, and the second combined coil comprises a second net side coil, a second valve side coil and a second pressure regulating coil which are sequentially and concentrically sleeved from inside to outside;
the upper end of the first net side coil is connected with the upper end of the second net side coil and is connected with the tail end of the first net side sleeve through a net side lead;
the lower end of the first voltage regulating coil is connected with the lower end of the second voltage regulating coil and is connected with the tail end of the second network side sleeve through a voltage regulating lead;
the upper end of the first valve side coil is connected with the upper end of the second valve side coil and is connected with the tail end of the first valve side sleeve through a valve side lead;
the lower end of the first valve side coil is connected with the lower end of the second valve side coil and is connected with the tail end of the second valve side sleeve through a net side lead.
According to the converter transformer fault simulation platform, support bars are arranged on the left side and the right side of the network side coil, the valve side coil and the pressure regulating coil; the upper side and the lower side of the net side coil, the valve side coil and the pressure regulating coil are provided with a pressure plate and an electrostatic ring which are arranged in parallel; and corner rings are arranged at four corners of the net side coil, the valve side coil and the pressure regulating coil.
In the converter transformer fault simulation platform, the cushion block is abutted to the inside of the iron core.
According to the converter transformer fault simulation platform, the transformer box body is connected with the cooler through the cooler oil pipeline, and the cooler oil pipeline is provided with the oil flow relay.
According to the converter transformer fault simulation platform, an oil pump is arranged on the cooler oil pipeline.
According to the converter transformer fault simulation platform, the transformer box body is communicated with the capsule type oil conservator, and the capsule type oil conservator is internally provided with the capsule.
The converter transformer fault simulation platform as described above, further, the upper and lower end portions of the iron core are mounted in the transformer box through clips, and the iron core and the clips are connected with equipotential connection lines.
According to the converter transformer fault simulation platform, further, the transformer box body is provided with an on-load tap-changer; the on-load tap-changer comprises a change-over switch arranged at the upper part of the on-load tap-changer and a tap selector arranged at the lower part of the on-load tap-changer; and a polarity selector is arranged in the tapping selector, and the tapping selector is connected with the combined coil through a tapping lead wire.
The converter transformer fault simulation platform is characterized in that a transparent cover plate is arranged on the transformer box body.
The converter transformer fault simulation platform is characterized in that an observation window is arranged on the side wall of the transformer box body.
A converter transformer fault simulation method is carried out by using the converter transformer fault simulation platform, and comprises lead overheating fault simulation, insulation partial discharge fault simulation, oil flow relay fault simulation, capsule damage simulation, iron core and clamp multipoint grounding simulation and on-load tap-changer polarity conversion simulation;
the lead overheating fault simulation is used for simulating the fault caused by lead overheating by adopting a valve side lead or a network side lead with a smaller sectional area or a pressure regulating lead to replace a lead with a normal sectional area at the original position under the condition of ensuring that a coil always continuously passes rated or maximum current;
the insulation partial discharge fault simulation is used for simulating an insulation partial discharge fault by replacing normal angle rings and cushion blocks on the original positions with angle rings and cushion blocks containing air gaps and impurities or having overproof water content;
the fault simulation of the oil flow relay is used for researching the reason of the misoperation of the oil flow relay by simulating the oil flow speed of the oil pipeline of the cooler under different working conditions;
the capsule damage simulation is used for researching the oil level distribution change condition of the capsule type oil storage cabinet caused by capsule damage of different degrees by replacing normal capsules in the capsule type oil storage cabinet with capsules with damage faults.
The iron core and the clamping piece multipoint grounding simulation is used for simulating multipoint grounding faults by arranging equipotential connecting lines at different positions of the iron core and the clamping piece;
the polarity conversion simulation of the on-load tap-changer monitors the switching process of the polarity selector in the diverter switch or the tap selector by replacing the tap selector and is used for simulating the working condition of the polarity conversion of the on-load tap-changer.
Compared with the prior art, the invention has the beneficial effects that: the actual fault condition of the converter transformer can be simulated to the maximum extent, the equipment is simple in construction, complete in function and easy to operate, and meanwhile, a platform can be provided for skill training of maintainers; various fault-simulated hardware devices are provided.
Drawings
Fig. 1 is a front view of a converter transformer fault simulation platform according to an embodiment of the present invention;
fig. 2 is a top view of a converter transformer fault simulation platform according to an embodiment of the present invention;
fig. 3 is a right side view of a converter transformer fault simulation platform according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an iron core according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the connection of the leads of the first combined coil and the second combined coil;
fig. 6 is a schematic diagram showing the arrangement of the insulating members in the first combined coil.
Wherein: 1. a transformer tank body; 201. a valve side lead; 202. a grid-side lead; 203. a voltage regulating lead; 3. a first combined coil; 301. a first valve-side coil; 302. a first net-side coil; 303. a first voltage regulating coil; 4. a second combined coil; 401. a second mesh-side coil; 402. a second valve side coil; 403. a second voltage regulating coil; 5. a first net-side sleeve; 6. a second net-side sleeve; 7. a first valve-side sleeve; 8. a second valve-side sleeve; 9. an angle ring; 10. an electrostatic ring; 11. a cooler oil line; 12. a capsule type oil conservator; 1201. a capsule; 13. a four-column iron core; 1301. a main column; 1302. a side column; 14. a clamp; 15. an oil pump; 16. an on-load tap-changer; 1601. a transition flange; 1602. a switch; 1603. a tap selector; 17. a transparent cover plate; 18. an observation window; 19. a supporting strip; 20. pressing a plate; 21. a cooler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Example (b):
referring to fig. 1 to 6, a converter transformer fault simulation platform comprises a transformer box 1, wherein an iron core is arranged in the transformer box 1, a combined coil is sleeved on the iron core, and the combined coil comprises a net side coil, a valve side coil and a voltage regulating coil which are concentrically sleeved from inside to outside in sequence; the lower end of the net side coil is connected with the upper end of the voltage regulating coil; the iron core is a four-column iron core 13, the four-column iron core 13 comprises two main columns 1301 and two side columns 1302, the combined coils comprise a first combined coil 3 and a second combined coil 4 which are respectively sleeved on the two main columns 1301 in a sleeved mode, the first combined coil 3 comprises a first net side coil 302, a first valve side coil 301 and a first pressure regulating coil 303 which are sequentially and concentrically sleeved from inside to outside, and the second combined coil 4 comprises a second net side coil 401, a second valve side coil 402 and a second pressure regulating coil 403 which are sequentially and concentrically sleeved from inside to outside; the upper end of the first net side coil 302 is connected with the upper end of the second net side coil 401 and is connected with the tail end of the first net side sleeve 5 through a net side lead 202; the lower end of the first voltage regulating coil 303 is connected with the lower end of the second voltage regulating coil 403 and is connected with the tail end of the second network side sleeve 6 through a voltage regulating lead 203; the upper end of the first valve side coil 301 is connected with the upper end of the second valve side coil 402 and is connected with the tail end of the first valve side sleeve 7 through a valve side lead 201; the lower end of the first net side coil 302 is connected to the lower end of the second net side coil 401 and to the tail end of the second valve side sleeve 8 by a net side lead 202.
In specific implementation, the iron core adopts a single-phase four-column structure, two columns in the middle are core columns, a first combined coil 3 and a second combined coil 4 are respectively sleeved on the two core columns, and the capacity of the combined coil sleeved on each core column is half of that of the whole converter transformer. The two outermost side columns 1302 of the core are not sleeved with coils, and are used for forming a complete core magnetic loop. It should be noted that the iron core in this embodiment adopts B27R095 silicon steel sheets, 3-level fully-inclined seams, and the central column diameter is 570mm, and the height is 1285 mm. The valve side coil and the net side coil are both continuous coils and transposed conductors, the pressure regulating coil is a layer coil and a transposed conductor, the coils are both in an end part wire outlet mode, the valve side coil is wound in the right direction, and the net side coil is wound in the left direction. The wiring mode of the coil can reduce the magnetic leakage under the combined action of alternating current and direct current, further reduce the temperature rise value of the whole transformer oil, paperboard and metal structural parts by about 10K, and reduce the temperature rise by about 5K when the transformer bears the background harmonic of a power grid or the characteristic harmonic and non-characteristic harmonic of a direct current system.
In the present embodiment, the first grid-side bushing 5 and the second grid-side bushing 6 are both vertically led out from the top of the transformer tank 1, and the first valve-side bushing 7 and the second valve-side bushing 8 are obliquely led out from one side of the transformer tank 1. The transformer box body 1 is made of plate-type reinforced iron, and the whole structure is firm. In specific implementation, the valve side lead 201 or the net side lead 202 or the pressure regulating lead 203 with smaller cross section area is adopted to replace the lead with normal cross section area in the original position, so that the fault caused by overheating of the lead is simulated under the condition that the coil is ensured to continuously pass rated or maximum current all the time. The converter transformer fault simulation platform can simulate the actual fault condition of the converter transformer to the maximum extent, the coil can effectively reduce magnetic leakage, the equipment is easy to operate, and meanwhile, a platform can be provided for training the skills of maintainers.
Furthermore, the left side and the right side of the net side coil, the valve side coil and the pressure regulating coil are provided with supporting bars 19; the upper side and the lower side of the net side coil, the valve side coil and the pressure regulating coil are provided with a pressure plate 20 and an electrostatic ring 10 which are arranged in parallel; the four corners of the net side coil, the valve side coil and the pressure regulating coil are provided with angle rings 9.
Fig. 6 is a schematic layout diagram of the insulating components in the first combined coil 3, in this embodiment, the insulating components such as the angle ring 9, the pressure plate 20, and the electrostatic ring 10 are designed to fully consider the insulating characteristics of the grid-side coil, the valve-side coil, and the voltage-regulating coil in the combined coil, and the provided insulating structure can bear both the ac voltage and the dc voltage and also meet the ac and dc electric field distribution characteristics. During specific implementation, the angle ring 9 with air gaps and impurities or with water content exceeding the standard is used for replacing the normal angle ring 9 on the original position to perform a series of voltage withstand tests, and meanwhile, the partial discharge condition is monitored, so that the partial discharge rule of the insulating part with different positions, different defect types and different defect degrees is researched. Meanwhile, the signal rule and the corresponding oil chromatogram change rule of various types of partial discharge reflected in the partial discharge test by a pulse current method, an ultrahigh frequency method and an ultrasonic method can be researched.
Furthermore, the inside butt of iron core has the cushion. In the embodiment, the cushion block is abutted between the two silicon steel sheets in the iron core, the cushion block containing air gaps, impurities or exceeding water content replaces the normal cushion block on the original position to perform a series of voltage withstand tests, and the partial discharge condition is monitored simultaneously, so that the partial discharge rule of the insulating part with different positions, different defect types and different defect degrees is researched. Meanwhile, the signal rule and the corresponding oil chromatogram change rule of various types of partial discharge reflected in the partial discharge test by a pulse current method, an ultrahigh frequency method and an ultrasonic method can be researched.
Further, the transformer tank 1 is connected with a cooler 21 through a cooler oil pipeline 11, and an oil flow relay is installed on the cooler oil pipeline 11. The oil flow speed of the cooler oil pipeline 11 under different working conditions is simulated, so that the reason for the misoperation of the oil flow relay is researched.
Further, an oil pump 15 is provided on the cooler oil line 11. The speed of the oil flow in the cooler oil pipeline 11 is increased by arranging the adjustable-speed oil pump 15 on the cooler 21 oil pipeline 11, and the method is used for researching the current and partial discharge change condition of an iron core or a transformer insulating component under the static electricity of the oil flow.
Further, a capsule 1201 type oil conservator 12 is communicated with the transformer box 1, a capsule 1201 is arranged in the capsule 1201 type oil conservator 12, and a sealing structure is formed between the capsule 1201 type oil conservator and the outer shell. The capsule 1201 realizes the supply of the transformer oil in the transformer tank 1 through expansion and contraction, and the normal capsule 1201 in the capsule type oil conservator 12 is replaced by the capsule 1201 with a damaged fault, so that the oil level distribution change of the capsule type oil conservator 12 caused by the damage of the capsule 1201 with different degrees is researched.
Furthermore, the upper and lower end parts of the iron core are installed in the transformer box 1 through the clamping pieces 14, and the iron core and the clamping pieces 14 are connected with equipotential connecting lines. Normally, the iron core and the clamping members 14 of the transformer are grounded at one and only one point, once the iron core and the clamping members are grounded at multiple points, the grounding current is obviously increased, and circulation currents can be generated inside the transformer, so that local overheating and insulation damage are caused, and even the transformer is damaged. In this embodiment, equipotential connection lines are disposed at different positions of the iron core and the clamping piece 14, and are used for simulating a multipoint ground fault, observing the change trend of the earth current and the oil chromatogram of the iron core and the clamping piece 14, and observing the influence of the multipoint ground fault. As an improvement of the implementation, the iron core and the clamping piece 14 are connected with equal-potential metal parts through a detachable equipotential connecting line and used for simulating the fault conditions of falling of the equal-potential equipotential line of the ground potential and the like, and further observing the change rule of the earth current, the partial discharge signal and the oil chromatogram of the iron core and the clamping piece 14.
Further, the transformer tank 1 is provided with an on-load tap-changer 16; the on-load tap-changer 16 comprises a diverter switch 1602 arranged at its upper part and a tap selector 1603 at its lower part; a polarity selector is provided in the tap selector 1603 and the tap selector 1603 is connected to the combined coil by tap leads.
In this embodiment, the on-load tap changer 16 includes a switch 1602 and a tap selector 1603, where the switch 1602 is mechanically connected to a base of the drum bottom gear mechanism and a support of a sheave mechanism of the tap selector 1603, a polarity selector is disposed in the tap selector 1603, and the switch 1602 is used to control a contact action of the tap selector 1603 to switch polarities. In specific implementation, the switching process of the polarity selector in the on-load tap-changer 1602 or the tap-selector 1603 is monitored by modifying an unsuitable tap lead and replacing different types of the diverter switches 1602 or the tap-selectors 1603, and the method is used for researching a gas production rule, a thermal stability performance, an oil speed and pressure rule, working performance and the like of the on-load tap-changer 16 during working. In addition, a transition flange 1601 is arranged at the upper end of the on-load tap-changer 16, and the transition flange 1601 can be modified to be used for researching the working performance of the on-load tap-changer 16 during working.
Furthermore, a transparent cover plate 17 is arranged on the transformer box body 1, the transparent cover plate 17 and the transformer box body 1 are assembled through bolts, and an observation window 18 is arranged on the side wall of the transformer box body 1, so that the internal working condition of the transformer can be observed conveniently, and the visualization of the simulation process is ensured.
A converter transformer fault simulation method is carried out by utilizing the converter transformer fault simulation platform and comprises the steps of lead overheating fault simulation, insulation partial discharge fault simulation, oil flow relay fault simulation, capsule damage simulation, iron core and clamp multipoint grounding simulation and on-load tap-changer polarity conversion simulation;
the lead overheating fault simulation is used for simulating the fault caused by lead overheating by replacing the lead with the valve side lead 201 or the net side lead 202 or the pressure regulating lead 203 with the lead with the smaller cross section area, and under the condition that the coil is ensured to continuously pass rated or maximum current all the time;
the insulation partial discharge fault simulation carries out a series of voltage withstanding tests by replacing the normal angle rings 9 and cushion blocks on the original positions with the angle rings 9 and cushion blocks containing air gaps, impurities or exceeding water content, and is used for simulating the insulation partial discharge fault;
the oil flow relay fault simulation is used for researching the reason of the misoperation of the oil flow relay by simulating the oil flow speed of the cooler oil pipeline 11 under different working conditions;
the capsule damage simulation is used for researching the oil level distribution change of the capsule type oil conservator 12 caused by different degrees of capsule 1201 damage by replacing the normal capsule 1201 in the capsule type oil conservator 12 with the capsule 1201 with the damaged and failed capsule 1201.
The iron core and the clamping piece multipoint grounding simulation is used for simulating multipoint grounding faults by arranging equipotential connecting lines at different positions of the iron core and the clamping piece 14;
the on-load tap-changer polarity conversion simulation is used for simulating the working condition of polarity conversion of the on-load tap-changer by replacing the tap-changer 1603 and monitoring the switching process of the polarity selector in the change-over switch 1602 or the tap-changer 1603.
The method is carried out by using the converter transformer fault simulation device, is simple in operation process, safe and reliable, and can simulate the actual fault condition of the converter transformer to the maximum extent.
The invention has the beneficial effects that: the actual fault condition of the converter transformer can be simulated to the maximum extent, the magnetic flux leakage can be effectively reduced in the coil wiring mode, the equipment is easy to operate, and meanwhile, a platform can be provided for the skill training of maintainers; various fault-simulated hardware devices are provided.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (8)
1. A converter transformer fault simulation platform comprises a transformer box body (1), wherein an iron core is arranged in the transformer box body (1), a combined coil is sleeved on the iron core, and the combined coil comprises a net side coil, a valve side coil and a voltage regulating coil which are sequentially and concentrically sleeved from inside to outside; the lower end of the net side coil is connected with the upper end of the voltage regulating coil; it is characterized in that the preparation method is characterized in that,
the iron core is a four-column iron core (13), the four-column iron core (13) comprises two main columns (1301) and two side columns (1302), and the combined coil comprises a first combined coil (3) and a second combined coil (4) which are sleeved on the two main columns (1301) respectively; the first combined coil (3) comprises a first net side coil (302), a first valve side coil (301) and a first pressure regulating coil (303) which are concentrically sleeved in sequence from inside to outside, and the second combined coil (4) comprises a second net side coil (401), a second valve side coil (402) and a second pressure regulating coil (403) which are concentrically sleeved in sequence from inside to outside;
the upper end of the first net side coil (302) is connected with the upper end of the second net side coil (401) and is connected with the tail end of the first net side sleeve (5) through a net side lead (202);
the lower end of the first voltage regulating coil (303) is connected with the lower end of the second voltage regulating coil (403) and is connected with the tail end of the second net side sleeve (6) through a voltage regulating lead (203);
the upper end of the first valve side coil (301) is connected with the upper end of the second valve side coil (402) and is connected with the tail end of the first valve side sleeve (7) through a valve side lead (201);
the lower end of the first valve side coil (301) is connected with the lower end of the second valve side coil (402) and is connected with the tail end of the second valve side sleeve (8) through a net side lead (202);
supporting bars (19) are arranged on the left side and the right side of the net side coil, the valve side coil and the pressure regulating coil; the upper side and the lower side of the net side coil, the valve side coil and the pressure regulating coil are provided with a pressure plate (20) and an electrostatic ring (10) which are arranged in parallel; corner rings (9) are arranged at four corners of the net side coil, the valve side coil and the pressure regulating coil;
the inside butt of iron core has the cushion.
2. The converter transformer fault simulation platform according to claim 1, characterized in that the transformer tank (1) is connected with a cooler (21) through a communicating cooler oil pipeline (11), and an oil flow relay is installed on the cooler oil pipeline (11).
3. The converter transformer fault simulation platform according to claim 2, characterized in that an oil pump (15) is arranged on the oil pipeline (11) of the cooler (21).
4. The converter transformer fault simulation platform according to claim 3, wherein a capsule type oil conservator (12) is communicated with the transformer tank (1), and a capsule (1201) is arranged in the capsule type oil conservator (12).
5. The converter transformer fault simulation platform according to claim 4, wherein the upper and lower end portions of the iron core are mounted in the transformer tank (1) through clamping pieces (14), and equipotential connection lines are connected to the iron core and the clamping pieces (14).
6. The converter transformer fault simulation platform according to claim 5, characterized in that the transformer tank (1) is provided with an on-load tap changer (16); the on-load tap-changer (16) comprises a switch (1602) arranged on the upper part of the on-load tap-changer and a tap selector (1603) arranged on the lower part of the on-load tap-changer; a polarity selector is arranged in the tap selector (1603) and the tap selector (1603) is connected with the combined coil through a tap lead.
7. The converter transformer fault simulation platform according to claim 6, wherein a transparent cover plate (17) is arranged on the transformer tank (1) and an observation window (18) is arranged on a side wall of the transformer tank (1).
8. A converter transformer fault simulation method is characterized by being carried out by using the converter transformer fault simulation platform of claim 7, and comprising lead overheating fault simulation, insulation partial discharge fault simulation, oil flow relay fault simulation, capsule breakage simulation, iron core, clamp multipoint grounding simulation and on-load tap-changer polarity conversion simulation;
the lead overheating fault simulation is used for simulating the fault caused by lead overheating by replacing a lead with a normal cross section at the original position with a valve side lead (201) or a net side lead (202) or a pressure regulating lead (203) with a smaller cross section area under the condition of ensuring that a coil continuously passes rated or maximum current all the time;
the insulation partial discharge fault simulation carries out a series of voltage withstanding tests by replacing an angle ring (9) and a cushion block which contain air gaps, impurities or contain excessive water with a normal angle ring (9) and a cushion block on the original positions, and is used for simulating the insulation partial discharge fault;
the fault simulation of the oil flow relay is used for researching the cause of the misoperation of the oil flow relay by simulating the oil flow speed of the cooler oil pipeline (11) under different working conditions;
the capsule damage simulation is used for researching the oil level distribution change condition of the capsule type oil storage cabinet (12) caused by different degrees of capsule (1201) damage by replacing a normal capsule (1201) in the capsule type oil storage cabinet (12) with a capsule (1201) with a damage fault;
the iron core and the clamping piece multipoint grounding simulation is used for simulating multipoint grounding faults by arranging equipotential connecting lines at different positions of the iron core and the clamping piece (14);
the polarity conversion simulation of the on-load tap-changer is used for simulating the working condition of polarity conversion of the on-load tap-changer by replacing the tap-changer (1603) and monitoring the switching process of the polarity selector in the change-over switch (1602) or the tap-changer (1603).
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| CN201804691U (en) * | 2010-06-30 | 2011-04-20 | 特变电工沈阳变压器集团有限公司 | Single-phase super-capacity transformer for nuclear power station |
| CN201976061U (en) * | 2011-02-23 | 2011-09-14 | 中国西电电气股份有限公司 | Voltage regulating structure of converter transformer |
| CN102226972B (en) * | 2011-03-31 | 2012-08-22 | 中国西电电气股份有限公司 | Two-column serial wiring structure of network-side coils for converter transformer |
| US20130171606A1 (en) * | 2011-12-30 | 2013-07-04 | Arthur Francis Seymour | Smart grid educational tool and system for using the same |
| CN204242796U (en) * | 2014-10-24 | 2015-04-01 | 特变电工衡阳变压器有限公司 | A kind of DC ice melting rectifier transformer |
| CN104537936A (en) * | 2015-01-04 | 2015-04-22 | 国家电网公司 | Low-voltage transformer area simulation practical training device for rural network low-voltage distribution box |
| CN106531421B (en) * | 2015-09-14 | 2018-05-11 | 特变电工沈阳变压器集团有限公司 | A kind of net side accesses 750kV converter power transformers |
| CN107255752A (en) * | 2017-04-24 | 2017-10-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of computational methods of converter power transformer entrance capacitance |
| CN208622302U (en) * | 2018-03-15 | 2019-03-19 | 徐州启能电气设备有限公司 | Three-phase transformer is used in teaching |
| CN108335895A (en) * | 2018-04-28 | 2018-07-27 | 广东电网有限责任公司 | Visualize transformer method of modifying |
| CN108922346A (en) * | 2018-07-05 | 2018-11-30 | 国家电网有限公司 | A kind of converter power transformer principle and structure simulation system |
| CN109087568A (en) * | 2018-09-17 | 2018-12-25 | 国网青海省电力公司检修公司 | Transformer analog training apparatus |
| CN210181138U (en) * | 2019-05-10 | 2020-03-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Fault simulation platform for converter transformer |
-
2019
- 2019-05-10 CN CN201910389893.6A patent/CN110288883B/en active Active
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Address after: 510663 Building 2, 223 Kexue Avenue, Luogang District, Guangzhou City, Guangdong Province Patentee after: China Southern Power Grid Corporation Ultra High Voltage Transmission Company Electric Power Research Institute Address before: 510663 Building 2, 223 Kexue Avenue, Luogang District, Guangzhou City, Guangdong Province Patentee before: MAINTENANCE & TEST CENTRE, CSG EHV POWER TRANSMISSION Co. |
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Application publication date: 20190927 Assignee: SHANGHAI JUDIAN ELECTRIC EQUIPMENT Co.,Ltd. Assignor: China Southern Power Grid Corporation Ultra High Voltage Transmission Company Electric Power Research Institute Contract record no.: X2023980042221 Denomination of invention: A Fault Simulation Platform and Method for Converter Transformers Granted publication date: 20210601 License type: Common License Record date: 20230920 |
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