CN203398791U - Alternating current filter - Google Patents
Alternating current filter Download PDFInfo
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- CN203398791U CN203398791U CN201320515645.XU CN201320515645U CN203398791U CN 203398791 U CN203398791 U CN 203398791U CN 201320515645 U CN201320515645 U CN 201320515645U CN 203398791 U CN203398791 U CN 203398791U
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- Prior art keywords
- alternating current
- current filter
- contact
- large group
- coil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model discloses an alternating current filter, comprising at least one large alternating current filter set, large alternating current filter set protective devices and measurement and control systems. The large alternating current filter set is composed of at least two parallelly connected small alternating current filter sets; the large alternating current filter set protective devices comprises a first time relay and a second time relay. The alternating current filter further comprises a maintenance pressing plate, an input module and a third relay; two ends of the maintenance pressing plate and the input module after series connection are respectively in connection with a direct current screen anode and a direct current screen cathode; the coil of the third relay bridges two ends of the input module; a contact of the third relay is connected between a first coil and an output terminal; the protection motion output terminal of the small alternating current filter sets is connected between a first contact and the direct current screen anode. The alternating current filter is provided with the maintenance pressing plate to block the transmission of correlative protection motion signals.
Description
Technical field
The utility model relates to high voltage dc transmission technology field, is specifically related to a kind ofly prevent that alternating current filter group from transferring the alternating current filter of " non-selection " state automatically to.
Background technology
Alternating current filter is current conversion station important composition equipment, and whether it works and be directly connected to the stable operation of high voltage direct current transmission.2011 03 month 04: 55 on the 18th; maintainer supplements in experimentation after processing large group of protective device of ACF2 alternating current filter " synchronous serial interface communication makes mistakes " defect; discovery at large group of protective device of ACF2 alternating current filter (then also claim large group protection) in the situation that exiting completely; after large group protection action, the large Zu Sange alternating current filter of ACF2 alternating current filter group has been automatically brought to " non-selection " state (so-called " non-selection " state refers to the state of the uncontrollable alternating current filter of control system group switching).
Direct current system load was lower at that time, and inactivity lifting ，San Ge alternating current filter group does not all drop into, and in " selection " state.The large protective device action Hou，San Ge alternating current filter group that organizes has been automatically brought to " non-selection " state, and operations staff is manually reverted to " selection " state immediately, does not cause other consequences such as direct current system limit power.
If loaded between higher or direct current power buck stay but this situation occurs in direct current system, the alternating current filter group that should drop into or excise cannot move, make alternating current filter not meet the requirement of harmonic wave in direct current transportation horizontal or station, will cause the situation of direct current limit power or ac bus overvoltage.
Utility model content
In order to address the above problem; the utility model provides a kind of alternating current filter; it overhauls the function that shields the transmission of relevant protection actuating signal after pressing plate drops into by increase; thereby make signal cannot be sent to TT&C system; prevented that large group of protection action Hou， alternating current filter group has been automatically brought to " non-selection " state.
For realizing above object, the technical scheme that the utility model is taked is:
A kind of alternating current filter, it comprises large group of at least one alternating current filter, large group of protective device of alternating current filter and TT&C system, large group of this alternating current filter is connected on a little bus of alternating current filter and is formed by least two alternating current filter groups, large group of described alternating current filter is connected with TT&C system through large group of protective device of alternating current filter, large group of protective device of described alternating current filter comprises very first time relay and second time relay, wherein, one end of the first coil is connected by the second contact and a direct current cabinet are anodal, one end of the second coil is connected by the first contact and described direct current cabinet are anodal, the other end of the first coil and the second coil is all connected with TT&C system by the lead-out terminal of large group of protective device of alternating current filter, described alternating current filter further comprises maintenance pressing plate, intake module and the 3rd relay, described maintenance pressing plate is connected respectively direct current cabinet positive pole and direct current cabinet negative pole with intake module series connection Hou two ends, the coil crossover of described the 3rd relay is in the two ends of intake module, the contact of the 3rd relay is connected between the first coil and described lead-out terminal, the protection action lead-out terminal of alternating current filter group is connected between the first contact and direct current cabinet positive pole.
Described TT&C system comprises reception board, and this reception board is provided with a reception terminal, and this receives terminal and is connected with described lead-out terminal.
Described the first contact and the second contact are normally opened contact.
The contact of described the 3rd relay is normally-closed contact.
The utility model compared with prior art; its advantage having is: the utility model overhauls the function that shields the transmission of relevant protection actuating signal after pressing plate drops into by increase; thereby make signal cannot be sent to TT&C system; prevented after large group of protection action; alternating current filter group has been automatically brought to " non-selection " state; the utility model need not all remove to separate terminal during every task, also need not revise the program of TT&C system and can thoroughly eliminate hidden danger.
Accompanying drawing explanation
Fig. 1 is the structural representation of large group of the utility model alternating current filter;
Fig. 2 is the protection electrical schematic diagram of large group of protective device of existing alternating current filter;
Fig. 3 is large group of protective device of alternating current filter and TT&C system connection diagram;
Fig. 4 a-Fig. 4 c is the action logic figure of the TT&C system in Fig. 2 situation;
Fig. 5 is the protection electrical schematic diagram after large group of protective device of the utility model alternating current filter improves.
Wherein: 1, alternating current filter is large group; 11, alternating current filter group; 12, alternating current filter group; 13, alternating current filter group; 14, alternating current filter group protection action lead-out terminal; 21, large group of protective device of alternating current filter; 211, lead-out terminal; 2121, the first coil; 2122, the first contact; 2131, the second coil; 2132, the second contact; 22, large group of protective device of alternating current filter; 221, lead-out terminal; 3, TT&C system; 31, first receive board; 311, first receive terminal; 32, second receive board; 321, second receive terminal; 4, TT&C system; 51, the coil of the 3rd relay; 52, the contact of the 3rd relay; 6, maintenance pressing plate; 7, intake module; 81, direct current cabinet is anodal; 82, direct current cabinet negative pole; 9, the little bus of alternating current filter.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
Embodiment
Please refer to shown in Fig. 1 and Fig. 3, a kind of alternating current filter, it comprises by a plurality of alternating current filter group and is connected to large group of the alternating current filter that forms on a little bus of alternating current filter, the quantity that alternating current filter is large group is a plurality of.In the present embodiment, take large group 1 of alternating current filter forms as the Li，Qi You alternating current filter 11, of the group alternating current filter 12He of group alternating current filter group is connected on the little bus 9 of alternating current filter for 13 minutes.Large group of 1 correspondence of this alternating current filter is connected with large group of protective device 21 of alternating current filter and large group of protective device 22 of alternating current filter; and large group 1 of this alternating current filter corresponding two TT&C system (TT&C system 3 and TT&C system 4); wherein, TT&C system 4 is stand-by state.Large group of protective device 21 of alternating current filter and large group of protective device 22 of alternating current filter are respectively equipped with lead-out terminal 211 and lead-out terminal 221; in TT&C system 3, be provided with the first reception board 31 and second and receive board 32; the first reception board 31 and second receives board 32 and is respectively equipped with the first reception terminal 311 and the second reception terminal 321 being connected with lead-out terminal 221 with lead-out terminal 211; meanwhile, lead-out terminal 211 is also connected with the corresponding board that receives in TT&C system 4 respectively with lead-out terminal 221.TT&C system 3 and TT&C system 4 adopt the PCS-9555 type TT&C system of Nan Rui company, and the first reception board 31 and second receives board 32 and is RS851 reception board.
As shown in Figure 2, the protection electrical schematic diagram of large group of protective device of existing alternating current filter, the example that is connected to large group of protective device 21 of alternating current filter and TT&C system 3, the differential protection circuit being comprised of very first time relay and second time relay is set in large group of protective device 21 of alternating current filter, wherein, one end of the first coil 2121 is by the second contact 2132(normally opened contact) be connected with a direct current cabinet anodal 81, one end of the second coil 2131 is by the first contact 2122(normally opened contact) be connected with described direct current cabinet anodal 81, the other end of the first coil 2121 and the second coil 2131 is all connected with TT&C system 3 by the lead-out terminal 211 of large group of protective device of alternating current filter, alternating current filter group protection action lead-out terminal 14 is connected between anodal the 81 and first contact 2122 of direct current cabinet.By adding the magnitude of current, the differential protection of large group of protective device 21 of alternating current filter is moved, start corresponding trip(ping) circuit, now large group of protective device 21 of alternating current filter exits completely, and trip signal does not export.Simultaneously; differential protection action makes very first time relay or the second time relay excitation; the first contact 2122 or the second contact 2132 closures, protection is 3 " the 21 protection actions of large group of protective device of the alternating current filter " signals of TT&C system to running status through time delay.
As shown in Figure 3; above-mentioned signal is entered the first reception board 31 of TT&C system 3 by the lead-out terminal 211 of large group of protective device 21 of alternating current filter by hardwire; meanwhile, TT&C system 3 Bing Yi road signals " the 21 protection actions of large group of protective device of alternating current filter " are to the TT&C system 4 of stand-by state.
As shown in Fig. 4 a-4c, " the 21 protection actions of large group of protective device of alternating current filter " signal enters first of TT&C system 3 and receives board 31, through translation, converts signal to TT&C system internal language, by CAN Bus 1, is transmitted and is processed.Signal transfers " non-selection " state in Jiang Sange alternating current filter group after treatment, and on work station, sends corresponding warning information.
Structure by Fig. 4 a-4c(San Ge alternating current filter group is similar, only summarizes here) can find out:
A) outlet due to alternating current filter group protective device (corresponding Liang Ge alternating current filter group of each alternating current filter group protective device), alternating current filter minor group switches protective device and alternating current filter minor group switches operation control box adopts or door output, so no matter whether alternating current filter group protective device and the protection of alternating current filter minor group switches are exited, alternating current filter group protective device 1 or 2 actions, or alternating current filter minor group switches protection action, Jun Huijianggai alternating current filter group transfers " non-selection " state to;
B) due to above-mentioned output in a) and large group of protective device of alternating current filter (large group of protective device of alternating current filter is two) adopts or door output (in Fig. 4 a-4c, POUT Jun Zhi alternating current filter group transfers " non-selection " state to); so no matter whether large group of protection of alternating current filter is exited; large group protective device 1 or 2 actions, can transfer all alternating current filters group corresponding to large group of this alternating current filter to " non-selection " state.
As shown in Figure 5, in order to prevent that alternating current filter group from transferring " non-selection " state to, in the utility model embodiment, increase the function that shields the transmission of relevant protection actuating signal after maintenance pressing plate drops into, the same example that is connected to large group of protective device 21 of alternating current filter and TT&C system 3, from different being shown in Fig. 2, maintenance pressing plate 6 structures have been increased, maintenance pressing plate 6 is connected respectively direct current cabinet anodal 81 and direct current cabinet negative pole 82 with intake module 7 series connection Hou two ends, the coil 51 of the 3rd relay is connected across the two ends of intake module 7, the contact 52 of the 3rd relay is connected between the first coil 2121 and lead-out terminal 211, intake module 7 has test apparatus to provide.After maintenance pressing plate 6 drops into; the coil 51 of the 3rd relay is excitation with the variation of intake module 7; the contact 52(normally-closed contact of the 3rd relay) disconnect; large group of protective device 21 of alternating current filter to the loop of TT&C system 3 disconnects; signal cannot be sent to TT&C system 3, thereby blocked alternating current filter group, transfers " non-selection " state to.
The above embodiment has only expressed optimal design of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with claims.
Claims (4)
1. an alternating current filter, it comprises large group of at least one alternating current filter, large group of protective device of alternating current filter and TT&C system, large group of this alternating current filter is connected on a little bus of alternating current filter and is formed by least two alternating current filter groups, large group of described alternating current filter is connected with TT&C system through large group of protective device of alternating current filter, large group of protective device of described alternating current filter comprises very first time relay and second time relay, wherein, very first time relay comprises First Line circle and the first contact, second time relay comprises the second coil and the second contact, one end of the first coil is connected by the second contact and a direct current cabinet are anodal, one end of the second coil is connected by the first contact and described direct current cabinet are anodal, the other end of the first coil and the second coil is all connected with TT&C system by the lead-out terminal of large group of protective device of alternating current filter, it is characterized in that, described alternating current filter further comprises maintenance pressing plate, intake module and the 3rd relay, described maintenance pressing plate is connected respectively direct current cabinet positive pole and direct current cabinet negative pole with intake module series connection Hou two ends, the coil crossover of described the 3rd relay is in the two ends of intake module, the contact of the 3rd relay is connected between the first coil and described lead-out terminal, the protection action lead-out terminal of alternating current filter group is connected between the first contact and direct current cabinet positive pole.
2. alternating current filter according to claim 1, is characterized in that, described TT&C system comprises reception board, and this reception board is provided with a reception terminal, and this receives terminal and is connected with described lead-out terminal.
3. alternating current filter according to claim 1, is characterized in that, described the first contact and the second contact are normally opened contact.
4. alternating current filter according to claim 1, is characterized in that, the contact of described the 3rd relay is normally-closed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320515645.XU CN203398791U (en) | 2013-08-23 | 2013-08-23 | Alternating current filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320515645.XU CN203398791U (en) | 2013-08-23 | 2013-08-23 | Alternating current filter |
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| CN203398791U true CN203398791U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320515645.XU Expired - Lifetime CN203398791U (en) | 2013-08-23 | 2013-08-23 | Alternating current filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992527A (en) * | 2017-05-23 | 2017-07-28 | 云南电网有限责任公司 | The adjusting method and system of voltage pulsation during alternating current filter group switching |
| CN110138308A (en) * | 2019-06-24 | 2019-08-16 | 浙江幸福航天科技有限公司 | Motor operation control circuit and motor operation system |
-
2013
- 2013-08-23 CN CN201320515645.XU patent/CN203398791U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992527A (en) * | 2017-05-23 | 2017-07-28 | 云南电网有限责任公司 | The adjusting method and system of voltage pulsation during alternating current filter group switching |
| CN106992527B (en) * | 2017-05-23 | 2019-10-08 | 云南电网有限责任公司 | The adjusting method and system of voltage fluctuation during alternating current filter group switching |
| CN110138308A (en) * | 2019-06-24 | 2019-08-16 | 浙江幸福航天科技有限公司 | Motor operation control circuit and motor operation system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
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| CX01 | Expiry of patent term |