CN113077977A - Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor - Google Patents
Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor Download PDFInfo
- Publication number
- CN113077977A CN113077977A CN202110395980.XA CN202110395980A CN113077977A CN 113077977 A CN113077977 A CN 113077977A CN 202110395980 A CN202110395980 A CN 202110395980A CN 113077977 A CN113077977 A CN 113077977A
- Authority
- CN
- China
- Prior art keywords
- phase
- coil
- voltage regulating
- regulating
- voltage
- 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
Images
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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention relates to a high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shifting phase transformer with an additional reactor, belonging to the field of power transformers. The technical scheme is as follows: the coils of each phase are sequentially arranged from the core limb to the outside in sequence: the transformer comprises a first voltage regulating coil, a basic coil and a second voltage regulating coil; the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected to the corresponding vacuum on-load voltage regulating tap switch; the same-name ends of the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected with the positive tapping position and the negative tapping position of the vacuum on-load voltage regulating tapping switch of each phase. The invention has the following positive effects: the regulator has large capacity below 600MVA, and has limited short-circuit current, low manufacture cost, small installation area and convenient manufacture, and the manufacture cost of the phase angle regulator with the same capacity specification is only 70% of that of a double-body structure.
Description
Technical Field
The invention relates to a high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shift phase transformer with an additional reactor, which is suitable for regulating the power flow distribution of a power transmission line of a parallel power system and is also called a phase angle regulator. The invention discloses a high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shifting phase transformer with an additional reactor, which can be used for voltage classes of 245kV and below, has the function of limiting the short-circuit current of a system, can regulate the phase and the short-circuit current of the system, and belongs to the field of power transformers.
Background
In order to make the operation of the parallel power system more stable and efficient, a high-capacity single-body high-impedance symmetrical phase modulation phase-shifting transformer (phase angle regulator) with an additional reactor is needed to adapt to the tide distribution of the power transmission line of the parallel power system and limit the short-circuit current of the system. Particularly, the symmetrical phase modulation and phase shift transformer with the capacity below 6000MVA has the problems that the double-body structure in the prior art hardly meets the technical requirements, the adjustable capacity is small, the short-circuit current of the system cannot be greatly limited, the operation stability of a power system is influenced, the investment cost is high, the occupied area is large, the manufacturing cost is high and the like.
Disclosure of Invention
The invention aims to provide a high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shift transformer with an additional reactor, which has large adjustable capacity and limits short-circuit current, thereby having low manufacturing cost, small installation occupied area and convenient manufacture, and the manufacturing cost of a phase angle regulator with the same capacity specification is only 70 percent of that of a double-body structure, thereby solving the technical problems in the prior art.
The technical scheme of the invention is as follows:
a high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shift phase transformer with an additional reactor comprises a body, a transformer oil tank, an oil conservator, a vacuum on-load voltage-regulating tap-changer and an operating mechanism of the vacuum on-load voltage-regulating tap-changer; a single-body structure is adopted; the iron core is a three-phase three-column iron core or a three-phase five-column iron core; the coils of each phase are sequentially arranged from the core limb to the outside in sequence: the transformer comprises a first voltage regulating coil, a basic coil and a second voltage regulating coil; the head end a of the A-phase basic coil La1 is respectively connected with the switching polarity selectors of the C-phase vacuum on-load voltage-regulating tap switches Kc1 and Kc 2; the head end B of the basic coil Lb1 of the B phase is respectively connected with the switch polarity selectors of the vacuum on-load voltage regulating tap switches Ka1 and Ka2 of the A phase; the head end C of the C-phase basic coil Lc1 is respectively connected with the switch polarity selectors of the vacuum on-load voltage regulation tap switches Kb1 and Kb2 of the B-phase; the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected to the corresponding vacuum on-load voltage regulating tap switch; the same-name ends of the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected with the positive tapping position and the negative tapping position of the vacuum on-load voltage regulating tapping switch of each phase; the tapping head of the first voltage regulating coil of each phase is connected with an additional reactor LRC through a switch moving contact and then connected with the load sides L1, L2 and L3 of the phase; the tap of the second voltage regulating coil of each phase is in movable contact with the power supply sides S1, S2 and S3 of the phase through switches; A. the basic coils La1, Lb1 and Lc1 of the B, C phase are connected in a triangular manner.
The invention also comprises additional reactors, namely LRC1, LRC2 and LRC 3; LRC1 is connected to the a-phase basic coil La1, LRC2 is connected to the B-phase basic coil Lb1, and LRC3 is connected to the C-phase basic coil Lc 1.
The invention has the following positive effects: the regulator has large capacity below 600MVA, and has limited short-circuit current, low manufacture cost, small installation area and convenient manufacture, and the manufacture cost of the phase angle regulator with the same capacity specification is only 70% of that of a double-body structure.
Drawings
FIG. 1 is a front view of an embodiment of the invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a circuit schematic of an embodiment of the present invention;
in the figure: 1. the system comprises an oil conservator, a phase A power supply side sleeve, a phase A load side sleeve, a phase B power supply side sleeve, a phase B load side sleeve, a phase C power supply side sleeve, a phase C load tap changer and a;
la1, Lb1 and Lc1 are basic coils of A, B, C phases respectively, S1, S2 and S3 are power supply sides of A, B, C phases respectively, L1, L2 and L3 are load sides of A, B, C phases respectively, Lat1, Lbt1 and Lct1 are first voltage regulating coils of A, B, C phases respectively, Lat2, Lbt2 and Lct2 are second voltage regulating coils of A, B, C phases respectively, Ka1 and Ka2 are vacuum on-load voltage regulating tap switches of a phases, Kb1 and Kb2 are vacuum on-load voltage regulating tap switches of B phases, and Kc1 and Kc2 are vacuum on-load voltage regulating tap switches of C phases. The LRC1, LRC2, LRC3 are additional reactors.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
A high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shift phase transformer with an additional reactor comprises a body, a transformer oil tank 9, an oil conservator 1, a vacuum on-load voltage-regulating tap-changer 11 and an operating mechanism 8 of the vacuum on-load voltage-regulating tap-changer; a single-body structure is adopted; the iron core is a three-phase three-column iron core or a three-phase five-column iron core; the coils of each phase are sequentially arranged from the core limb to the outside in sequence: the transformer comprises a first voltage regulating coil, a basic coil and a second voltage regulating coil; the head end a of the A-phase basic coil La1 is respectively connected with the switching polarity selectors of the C-phase vacuum on-load voltage-regulating tap switches Kc1 and Kc 2; the head end B of the basic coil Lb1 of the B phase is respectively connected with the switch polarity selectors of the vacuum on-load voltage regulating tap switches Ka1 and Ka2 of the A phase; the head end C of the C-phase basic coil Lc1 is respectively connected with the switch polarity selectors of the vacuum on-load voltage regulation tap switches Kb1 and Kb2 of the B-phase; the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected to the corresponding vacuum on-load voltage regulating tap switch; the same-name ends of the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected with the positive tapping position and the negative tapping position of the vacuum on-load voltage regulating tapping switch of each phase; the tapping head of the first voltage regulating coil of each phase is connected with an additional reactor LRC through a switch moving contact and then connected with the load sides L1, L2 and L3 of the phase; the tap of the second voltage regulating coil of each phase is in movable contact with the power supply sides S1, S2 and S3 of the phase through switches; A. the basic coils La1, Lb1 and Lc1 of the B, C phase are connected in a triangular manner.
The invention also comprises additional reactors, namely LRC1, LRC2 and LRC 3; LRC1 is connected to the a-phase basic coil La1, LRC2 is connected to the B-phase basic coil Lb1, and LRC3 is connected to the C-phase basic coil Lc 1.
The working principle of the invention is as follows: A. the basic coils La1, Lb1 and Lc1 of B, C phases are used for exciting the iron core, the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected to the corresponding vacuum on-load voltage regulating tap switch, the tap position of the vacuum on-load voltage regulating tap switch is changed, the voltage between the power supply sides S1, S2 and S3 and the load sides L1, L2 and L3 can be changed, the phase shift angle between the power supply side and the load side can be changed, and the short-circuit current of the system can be greatly limited due to the addition of an additional reactor.
Claims (2)
1. A high-capacity single-body high-impedance novel symmetrical voltage-regulating phase-shift phase transformer with an additional reactor comprises a body, a transformer oil tank (9), an oil conservator (1), a vacuum on-load voltage-regulating tap switch (11) and an operating mechanism (8) of the vacuum on-load voltage-regulating tap switch; the method is characterized in that: a single-body structure is adopted; the iron core is a three-phase three-column iron core or a three-phase five-column iron core; the coils of each phase are sequentially arranged from the core limb to the outside in sequence: the transformer comprises a first voltage regulating coil, a basic coil and a second voltage regulating coil; the head end a of the A-phase basic coil La1 is respectively connected with the switching polarity selectors of the C-phase vacuum on-load voltage-regulating tap switches Kc1 and Kc 2; the head end B of the basic coil Lb1 of the B phase is respectively connected with the switch polarity selectors of the vacuum on-load voltage regulating tap switches Ka1 and Ka2 of the A phase; the head end C of the C-phase basic coil Lc1 is respectively connected with the switch polarity selectors of the vacuum on-load voltage regulation tap switches Kb1 and Kb2 of the B-phase; the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected to the corresponding vacuum on-load voltage regulating tap switch; the same-name ends of the first voltage regulating coil and the second voltage regulating coil of each phase are respectively connected with the positive tapping position and the negative tapping position of the vacuum on-load voltage regulating tapping switch of each phase; the tapping head of the first voltage regulating coil of each phase is connected with an additional reactor LRC through a switch moving contact and then connected with the load sides L1, L2 and L3 of the phase; the tap of the second voltage regulating coil of each phase is in movable contact with the power supply sides S1, S2 and S3 of the phase through switches; A. the basic coils La1, Lb1 and Lc1 of the B, C phase are connected in a triangular manner.
2. The novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift transformer with the additional reactor according to claim 1, is characterized in that: the reactor also comprises additional reactors respectively of LRC1, LRC2 and LRC 3; LRC1 is connected to the a-phase basic coil La1, LRC2 is connected to the B-phase basic coil Lb1, and LRC3 is connected to the C-phase basic coil Lc 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110395980.XA CN113077977A (en) | 2021-04-13 | 2021-04-13 | Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110395980.XA CN113077977A (en) | 2021-04-13 | 2021-04-13 | Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113077977A true CN113077977A (en) | 2021-07-06 |
Family
ID=76617494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110395980.XA Pending CN113077977A (en) | 2021-04-13 | 2021-04-13 | Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113077977A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354954A (en) * | 2008-05-28 | 2009-01-28 | 保定天威集团有限公司 | Load-ratio voltage transformer with angle-connecting high-voltage coil using reactance type on-load tap-changer |
| CN101419861A (en) * | 2008-09-17 | 2009-04-29 | 保定天威集团有限公司 | Large capacity single body phase angle regulator |
| CN104465053A (en) * | 2014-12-09 | 2015-03-25 | 山东电力设备有限公司 | High-capacity three-phase combined type phase-shift transformer |
| CN105336481A (en) * | 2015-12-01 | 2016-02-17 | 浙江法拉迪电气有限公司 | 36-level high-precision capacitance and voltage adjusting transformer for distributing line |
| CN105788833A (en) * | 2016-04-26 | 2016-07-20 | 国家电网公司 | Novel impedance-variable energy-saving transformer |
-
2021
- 2021-04-13 CN CN202110395980.XA patent/CN113077977A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354954A (en) * | 2008-05-28 | 2009-01-28 | 保定天威集团有限公司 | Load-ratio voltage transformer with angle-connecting high-voltage coil using reactance type on-load tap-changer |
| CN101419861A (en) * | 2008-09-17 | 2009-04-29 | 保定天威集团有限公司 | Large capacity single body phase angle regulator |
| CN104465053A (en) * | 2014-12-09 | 2015-03-25 | 山东电力设备有限公司 | High-capacity three-phase combined type phase-shift transformer |
| CN105336481A (en) * | 2015-12-01 | 2016-02-17 | 浙江法拉迪电气有限公司 | 36-level high-precision capacitance and voltage adjusting transformer for distributing line |
| CN105788833A (en) * | 2016-04-26 | 2016-07-20 | 国家电网公司 | Novel impedance-variable energy-saving transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105632727B (en) | Transformer on-load voltage regulation tap switch and on-load voltage regulation transformer | |
| CN107294100B (en) | Flexible alternating-current interconnection device for power distribution network | |
| CN105336481A (en) | 36-level high-precision capacitance and voltage adjusting transformer for distributing line | |
| CN202134379U (en) | Double-voltage convertible transformer | |
| RU2622890C1 (en) | Method for switching-on, switching-off and regulating voltage of transformer substation | |
| CN103178527B (en) | Voltage deviation adjustor | |
| CN113077978A (en) | Novel voltage-regulating phase-shifting transformer with high-capacity double-device height impedance and additional reactor | |
| CN113077977A (en) | Novel high-capacity single-body high-impedance symmetrical voltage-regulating phase-shift phase transformer with additional reactor | |
| CN103699162B (en) | Zigzag phase shifting voltage regulating transformer | |
| CN101478152B (en) | Three phase five post direct adjusting inductor type arc-suppression coil | |
| CN212411085U (en) | Voltage stabilizing circuit of non-contact alternating current voltage stabilizer | |
| CN203415390U (en) | Voltage-regulating transformer for realizing high-insulation and large-current on-load voltage regulation | |
| CN205122371U (en) | 36 level high accuracy distribution lines transfers and holds powerstat | |
| CN213242222U (en) | On-load seamless regulation power transformer | |
| CN201562573U (en) | Self-coupling low-voltage dual-voltage on-load voltage-regulating transformer | |
| CN101777866B (en) | High-voltage power-saving voltage regulator | |
| CN210200527U (en) | On-load tap changing transformer | |
| CN203193283U (en) | Voltage deviation regulator | |
| CN201490720U (en) | Phased wattles power dynamic compensation device | |
| CN214956377U (en) | High-impedance transformer for high and medium voltage side on-load voltage regulation | |
| CN110164726A (en) | A kind of voltage regulating distribution transformer | |
| CN213070888U (en) | Step-down transformer with compensation type zero setting line tap | |
| CN220138102U (en) | Voltage regulating structure of single-phase and two-phase on-load switch group of transformer | |
| CN219759367U (en) | Magnetic control voltage regulator | |
| CN102185553B (en) | Continuously controllable transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210706 |
|
| RJ01 | Rejection of invention patent application after publication |