CN216649042U - Contactor of GIS electrical equipment control cubicle - Google Patents
Contactor of GIS electrical equipment control cubicle Download PDFInfo
- Publication number
- CN216649042U CN216649042U CN202122589868.8U CN202122589868U CN216649042U CN 216649042 U CN216649042 U CN 216649042U CN 202122589868 U CN202122589868 U CN 202122589868U CN 216649042 U CN216649042 U CN 216649042U
- Authority
- CN
- China
- Prior art keywords
- closing
- loop
- contactor
- local
- brake
- 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.)
- Active
Links
Images
Landscapes
- Patch Boards (AREA)
Abstract
The utility model discloses a GIS electrical equipment convergence control cabinet contactor, which is characterized in that on the basis of the existing cloud-open electrical ZF10-126 type GIS electrical equipment, a K3/L contactor of a closing interlocking loop of a closing/opening loop of a breaker is removed, and the rest part of the loop is accessed to a local closing loop; dismantling K5/L1 and K5/L2 contactors in the running state loop of the 1DS and 2 DS/disconnecting switch motor loops, and connecting the rest part in the loop into a local closing loop of a closing/opening loop of the circuit breaker; and removing K80/L1, K80/L2, K80/T1, K80/T2 and K80/T3 contactors of the 1ES, 2ES and 3 ES/grounding switch loops, and shorting the contacts of the corresponding contactors in the local breaking/closing loop by using wires. After the improvement, the temperature of the contactor is kept in a normal range, and the requirement of normal operation of GIS electrical equipment is met.
Description
Technical Field
The utility model belongs to the field of GIS electrical equipment, and particularly relates to a contactor of a GIS electrical equipment control cubicle.
Background
The GIS is a totally enclosed combined electrical apparatus in which the primary equipment except the transformer in a transformer substation, the parts such as a circuit breaker, a disconnecting switch, a mutual inductor and the like are all enclosed in a grounded metal shell, and the interior of the GIS is filled with SF 6. The intelligent control device comprises a control cubicle, a circuit breaker, a current transformer, a grounding/isolating switch and transmission mechanism, a wire outlet sleeve, a lightning arrester, a main bus and an integral base.
Compared with conventional electrical equipment, the cloud-open electrical ZF10-126 GIS used in the 110kV earth warehouse substation has the advantages of good safety, few faults, high operation reliability and the like, but also has the problems of air leakage of an SF6 air chamber, heating of a contactor and the like.
From the composition of the cloud power-on electric ZF10-126 type GIS electric equipment, a convergence control cabinet is a convergence point for the electric connection of a combined electric appliance and a main control room, the whole interval is managed and controlled in a centralized manner, the SF6 gas density is monitored, the electric local operation of a circuit breaker, an isolating switch and an earthing switch is realized, the circuit breaker, the isolating switch and the earthing switch are electrically interlocked, various operation commands from the main control room are received, and the like, and the secondary circuits of all the components are converged. However, the realization of the above functions necessarily integrates a large number of electronic components such as contactors that operate in a live state for a long time, and in these contactors that operate in a live state for a long time, not only self-heat but also heat sources that control a limited space of a cabinet contribute, in particular:
through field detection, the temperature of the contactors K3/L, K5/L1, K5/L2, K80/L1, K80/L2, K80/T1 and K80/T2 is the highest and exceeds a set alarm value. Therefore, the performance of the contactor is influenced, the normal operation of other electronic components sensitive to the environmental temperature is also influenced, the contactor is operated at high temperature for a long time, the performance and the service life of the electronic components are greatly reduced, the failure rate of the device is greatly increased, great hidden dangers are brought to the safe and stable operation of GIS electrical equipment, and even major safety accidents such as fire disasters are caused.
Through the inspection of on-site GIS electrical equipment, the following problems are found in the long-term hot-running heating of K3/L, K5/L1, K5/L2, K80/L1, K80/L2, K80/T1 and K80/T2 contactors in the control cubicle:
(1) the GIS electrical equipment control cubicle part return circuit design is unreasonable, and the contactor long-term live operation leads to the contactor temperature to rise and exceed the regulation of 80 ℃, reaches more than 126 ℃ at most.
(2) The control cubicle does not have cooling facilities and ventilation unit, and the heat dissipation condition is poor, leads to the temperature of contactor to constantly rise, reaches or surpasss the temperature of reporting to the police.
(3) A large number of contactors (15) are used and are mixed with other electronic component devices to be installed together, so that the installation is crowded and no heat dissipation space exists.
SUMMERY OF THE UTILITY MODEL
Through the current situation investigation and reason analysis, in order to solve the problems, the cloud-open electrical ZF10-126 type GIS electrical equipment is improved, and the GIS electrical equipment control cabinet contactor is provided.
From the perspective of treating both symptoms and root causes, the problems that the temperature rises and exceeds a specified range due to heating of part of contactors of the control cubicle in long-term live operation are analyzed and solved, and power grid accidents that the normal operation of GIS electrical equipment is influenced due to the temperature rise of the contactors of the control cubicle, the safe and stable operation of a power grid is influenced due to intermittent power failure and the like are reduced. The original functions of the control cubicle cannot be changed or destroyed. The temperature of the contactor is kept in a normal range, and the requirement of normal operation of GIS electrical equipment is met.
The technical scheme of the utility model is as follows:
a contactor of a GIS electrical equipment convergence control cabinet is characterized in that on the basis of existing cloud-open electrical ZF10-126 type GIS electrical equipment, a K3/L contactor of a closing interlocking loop of a closing/opening loop of a breaker is removed, and the rest of the loop is connected to a local closing loop;
dismantling K5/L1 and K5/L2 contactors in the running state loop of the 1DS and 2 DS/disconnecting switch motor loops, and connecting the rest part in the loop into a local closing loop of a closing/opening loop of the circuit breaker;
and removing K80/L1, K80/L2, K80/T1, K80/T2 and K80/T3 contactors of the 1ES, 2ES and 3 ES/grounding switch loops, and shorting the contacts of the corresponding contactors in the local breaking/closing loop by using wires.
Furthermore, in a closing/opening loop of the circuit breaker, 1 pair of normally open contacts are arranged in the closing loop, when the circuit breaker/CB mechanism stores energy in place, an XP1 auxiliary contact in the closing interlocking loop is closed, 1 pair of normally closed contacts of a contactor K1A are used in the closing interlocking loop, and XP1 contacts and K1A contacts are connected in series into the closing loop;
in a 1 DS/isolation switch motor circuit, corresponding KC/L1, K0/L1 and 1DS contacts of a contactor K5/L1 in a closing circuit are connected in series into the closing circuit;
in the 2 DS/isolation switch motor circuit, corresponding KC/L2, K0/L2 and 2DS contacts of a contactor K5/L2 in a closing circuit are connected in series into the closing circuit.
Furthermore, in the 1 DS/disconnecting switch motor circuit, 2 pairs of normally open contacts are arranged in local brake separating, remote brake separating, local brake closing and remote brake closing circuits to replace a K80/L1 contactor;
in the 2 DS/isolation switch motor circuit, 2 pairs of normally open contacts are arranged in local brake separating, remote brake separating, local brake closing and remote brake closing circuits to replace a K80/L2 contactor.
Furthermore, in the 1 ES/grounding switch motor loop, 2 pairs of normally open contacts are arranged in the local brake opening and the local brake closing to replace a K80/T1 contactor;
in the 2 ES/grounding switch motor loop, 2 pairs of normally open contacts are arranged in on-site brake opening and on-site brake closing to replace a K80/T2 contactor;
in the 3 ES/grounding switch motor loop, 2 pairs of normally open contacts are arranged in the on-site brake opening and on-site brake closing instead of K80/T3 contactors.
Compared with the prior art, the beneficial effects are as follows:
after the improvement, the temperature of the contactor is kept in a normal range, and the requirement of normal operation of GIS electrical equipment is met.
The utility model reduces the frequent inspection and treatment of operation and maintenance personnel in the transformer substation, and generates a large amount of manpower, material resources and financial cost.
The utility model solves the major hidden trouble that the power grid safely and stably operates due to the high temperature of the contactor of the ZF10-126 type GIS electrical equipment in the station, solves the problem that the temperature of the contactor is high and the alarm is caused due to the long-term live operation of the contactor of the ZF10-126 type GIS electrical equipment control cubicle in the earth storehouse transformer substation, and eliminates the risks of the rejection and the misoperation of the circuit breaker caused by the high temperature of the contactor.
Drawings
Fig. 1 is a schematic diagram of a gap CB/switching-on and switching-off loop of a contact 1# and a main transformer of a GIS electrical equipment control cubicle 2# of the present embodiment;
fig. 2 is a control loop of a main transformer interval 2 DS/disconnecting switch of a 1# and a 2# main transformer of a GIS electrical equipment cubicle contactor according to this embodiment;
fig. 3 is a control circuit of the GIS electrical equipment control cubicle contactor 1#, 2# main transformer interval 2 ES/grounding switch of the present embodiment.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples without making any creative effort, shall fall within the protection scope of the present application.
Unless defined otherwise, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar terms in the present embodiments does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
In the GIS electrical equipment control cubicle contactor of the embodiment, on the basis of the existing cloud-open electrical ZF10-126 type GIS electrical equipment, a K3/L contactor of a closing interlocking loop of a closing/opening loop of a breaker is removed, and the rest of the loop is connected to a local closing loop; dismantling K5/L1 and K5/L2 contactors in the running state loop of the 1DS and 2 DS/disconnecting switch motor loops, and connecting the rest part in the loop into a local closing loop of a closing/opening loop of the circuit breaker; and removing K80/L1, K80/L2, K80/T1, K80/T2 and K80/T3 contactors of the 1ES, 2ES and 3 ES/grounding switch loops, and shorting the contacts of the corresponding contactors in the local breaking/closing loop by using wires.
In this embodiment, through research and analysis on a design drawing of a main transformer interval, a bus coupler interval, a line interval, a 1M bus and a 2M bus PT interval of a cloud-open electrical ZF10-126 type GIS electrical device, it is found that the function of a part of contactors in a secondary circuit can be transferred to other circuits, and the following analysis is performed on each interval: 1 main transformer interval
As shown in fig. 1, a Circuit Breaker (CB) closes/opens: and the secondary circuits comprise mechanism motor control, an anti-tripping relay, local closing, remote closing, local opening, remote opening, SF6 gas low-force tripping, SF6 gas locking, closing interlocking and the like.
Contactor (K3/L): the method is characterized in that 1 pair of normally open contacts are used in a closing loop, when the energy stored in a breaker/CB mechanism is in place, an XP1 auxiliary contact in the closing interlocking loop is closed, 1 pair of normally closed contacts of a contactor K1A is used in the closing interlocking loop, K3/L is electrified to run for a long time, a K3/L normally open contact in the closing loop is in a closed state, K3/L is removed, XP1 contacts and K1A contacts are connected into the closing loop in series, and the normal running of the closing loop is not affected.
Contactor (K5/L1): in the 1 DS/disconnecting switch motor circuit, the circuit is always in a charged state, so that a normally open contact of K5/L1 in a closing circuit is in a closed state, K5/L1 is removed, KC/L1, K0/L1 and 1DS contacts are connected into the closing circuit in series, and the normal operation of the closing circuit is not influenced.
Likewise, contactor (K5/L2): in the 2 DS/disconnecting switch motor loop, the motor loop is always in a charged state, so that a normally open contact of K5/L2 in a closing loop is in a closed state, K5/L2 is removed, KC/L2, K0/L2 and 2DS contacts are connected in series into the closing loop, and the normal operation of the closing loop is not influenced.
In conclusion, the contactors K3/L, K5/L1 and K5/L2 are dismantled, and the rest parts in the circuits of the closing interlock, the 1DS operation state and the 2DS operation state are moved to the closing circuit, so that the functions and the operation requirements of the closing/opening circuit of the Circuit Breaker (CB) are met, and the heating problems of the contactors K3/L, K5/L1 and K5/L2 are solved.
As shown in fig. 2, 1 DS/isolator motor loop: the system has secondary loops of interlocking, local brake opening, remote brake opening, local brake closing, remote brake closing, 1DS operation state and the like. The contactor (K80/L1) mainly functions in monitoring an operating power supply, 2 pairs of normally open contacts (as shown in the figure, 2.5 square wires are adopted for short circuit) are used in local brake separating, distant brake separating, local brake closing and distant brake closing loops, and since K80/L1 is electrified for a long time, the 2 pairs of normally open contacts are in a closed state, the K80/L1 contactor is dismounted, the function and the operation requirements of a 1 DS/disconnecting switch motor loop are ensured, and the heating problem of the K80/L1 contactor is solved.
2 DS/isolation switch motor circuit: the system has secondary loops of interlocking, local brake opening, remote brake opening, local brake closing, remote brake closing, 2DS operation state and the like. The contactor (K80/L2) mainly functions in monitoring an operation power supply, 2 pairs of normally open contacts are used in local brake separating, remote brake separating, local brake closing and remote brake closing loops, and as the K80/L2 is electrified for a long time, the 2 pairs of normally open contacts are in a closed state, the K80/L2 contactor is removed, so that the functions and the operation requirements of the 2 DS/isolation switch motor loop are guaranteed, and the heating problem of the K80/L2 contactor is solved. The 1 DS/isolation switch motor loop and the 2 DS/isolation switch motor loop have the same structure.
1 ES/grounding switch motor circuit: secondary loops such as interlocking, local opening and closing are arranged.
The contactor (K80/T1) mainly functions in monitoring an operation power supply, 2 pairs of normally open contacts are used in local brake opening and local brake closing, and since the K80/T1 is electrified for a long time, the 2 pairs of normally open contacts are in a closed state, the K80/T1 contactor is removed, so that the functions and the operation requirements of a 1 ES/grounding switch motor loop are ensured, and the heating problem of the K80/T1 contactor is solved.
As shown in fig. 3, 2 ES/ground switch motor circuit drawing: secondary loops such as interlocking, local opening and closing are arranged. The 1ES, 2ES and 3 ES/grounding switch loop structures are the same.
The contactor (K80/T2) mainly functions in monitoring an operating power supply, 2 pairs of normally open contacts (as shown in the figure, 2.5 square wires are adopted for short circuit) are used in on-site brake opening and on-site brake closing, the 2 pairs of normally open contacts are in a closed state due to long-term electrification of K80/T2, and the removal of the K80/T2 contactor not only ensures the functions and the operation requirements of a 2 ES/grounding switch motor loop, but also solves the heating problem of the K80/T2 contactor.
2 line spacing
In the line interval, feasibility analysis of a Circuit Breaker (CB) closing/opening loop, a 1 DS/disconnecting switch motor loop, a 2 DS/disconnecting switch motor loop, a 1 ES/grounding switch motor loop and a 2 ES/grounding switch motor loop is completely the same as that of a main transformer interval, and description is not repeated.
The difference is that the 3 ES/grounding switch motor loop is added.
3 ES/grounding switch motor circuit: secondary loops such as interlocking, local opening and closing are arranged.
The contactor (K80/T3) mainly functions in monitoring an operation power supply, 2 pairs of normally open contacts are used in local brake opening and local brake closing, and the K80/T3 is electrified for a long time, so the 2 pairs of normally open contacts are in a closed state, and the K80/T3 contactor is removed, so that the functions and the operation requirements of a 3 ES/grounding switch motor loop are ensured, and the heating problem of the K80/T3 contactor is solved.
3 bus-tie interval
The analysis of the bus-tie interval and the main transformer interval is completely the same, and the description is not repeated.
4I and II section bus PT interval
The PT intervals of the I and II section buses are only the feasibility analysis of a 1 DS/disconnecting switch motor loop, a 1 ES/grounding switch motor loop and a 2 ES/grounding switch motor loop and the analysis of the main transformer interval are completely the same, and the description is not repeated.
Through comparison, the technical transformation of the ZF10-126 type GIS electrical equipment control cubicle of the earth warehouse substation is completed, and no alarm signal with high temperature is reported by a background monitoring system until the operation is finished; the condition that the temperature of the contactor is high is not found in the field temperature measurement of the operating personnel, and the following table is shown:
through the comparison of temperature measurement before reforming, 101, 102, 112, I, II section generating lines PT interval accuse cabinet contactor does not appear exceeding the condition of 80 degrees.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a GIS electrical equipment control cubicle contactor which characterized in that: on the basis of the existing cloud switching-on electric ZF10-126 type GIS electric equipment, removing a K3/L contactor of a switching-on interlocking loop of a switching-on/switching-off loop of a breaker, and switching the rest of the loop into a local switching-on loop;
dismantling K5/L1 and K5/L2 contactors in the running state loop of the 1DS and 2 DS/disconnecting switch motor loops, and connecting the rest part in the loop into a local closing loop of a closing/opening loop of the circuit breaker;
and removing K80/L1, K80/L2, K80/T1, K80/T2 and K80/T3 contactors of the 1ES, 2ES and 3 ES/grounding switch loops, and shorting the contacts of the corresponding contactors in the local breaking/closing loop by using wires.
2. The GIS electrical equipment control cubicle contactor according to claim 1, characterized in that: in a closing/opening loop of the circuit breaker, 1 pair of normally open contacts are arranged in the closing loop, when the energy stored in the circuit breaker/CB mechanism is in place, an XP1 auxiliary contact in the closing interlocking loop is closed, 1 pair of normally closed contacts of a contactor K1A are used in the closing interlocking loop, and XP1 and K1A contacts are connected in series into the closing loop;
in a 1 DS/isolation switch motor circuit, corresponding KC/L1, K0/L1 and 1DS contacts of a contactor K5/L1 in a closing circuit are connected in series into the closing circuit;
in the 2 DS/isolation switch motor circuit, corresponding KC/L2, K0/L2 and 2DS contacts of a contactor K5/L2 in a closing circuit are connected in series into the closing circuit.
3. The GIS electrical equipment control cubicle contactor according to claim 2, characterized in that:
in the 1 DS/disconnecting switch motor circuit, 2 pairs of normally open contacts are arranged in local brake separating, remote brake separating, local switch closing and remote switch closing circuits to replace a K80/L1 contactor;
in the 2 DS/isolation switch motor circuit, 2 pairs of normally open contacts are arranged in local brake separating, remote brake separating, local brake closing and remote brake closing circuits to replace a K80/L2 contactor.
4. The GIS electrical equipment control cubicle contactor according to claim 2, characterized in that:
in the 1 ES/grounding switch motor loop, 2 pairs of normally open contacts are arranged in the on-site brake opening and on-site brake closing to replace a K80/T1 contactor;
in the 2 ES/grounding switch motor loop, 2 pairs of normally open contacts are arranged in on-site brake opening and on-site brake closing to replace a K80/T2 contactor;
in the 3 ES/grounding switch motor loop, 2 pairs of normally open contacts are arranged in the on-site brake opening and on-site brake closing instead of K80/T3 contactors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122589868.8U CN216649042U (en) | 2021-10-27 | 2021-10-27 | Contactor of GIS electrical equipment control cubicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122589868.8U CN216649042U (en) | 2021-10-27 | 2021-10-27 | Contactor of GIS electrical equipment control cubicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216649042U true CN216649042U (en) | 2022-05-31 |
Family
ID=81730474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122589868.8U Active CN216649042U (en) | 2021-10-27 | 2021-10-27 | Contactor of GIS electrical equipment control cubicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216649042U (en) |
-
2021
- 2021-10-27 CN CN202122589868.8U patent/CN216649042U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203071571U (en) | Intelligent monitoring device for distributed boundary switches | |
| CN111146755B (en) | Feeder terminal and line protection device | |
| CN104967036B (en) | Integrated intelligent combination transformer station | |
| CN204835331U (en) | Integration intelligence combination transformer substation | |
| CN112086897B (en) | Switch cabinet and switch equipment | |
| CN112653106B (en) | Method for starting failure loop of intelligent hydropower station circuit breaker failure protection device | |
| CN204216476U (en) | A kind of modularization intelligent box fixes gas-filled type high-voltage alternating metal enclosed switchgear | |
| CN203251008U (en) | Solid insulation switch cabinet | |
| CN216649042U (en) | Contactor of GIS electrical equipment control cubicle | |
| CN115459069A (en) | High tension switchgear protection five-prevention system | |
| CN211958264U (en) | Switch cabinet electric interlocking loop system | |
| CN208489574U (en) | A kind of low-voltage comprehensive distribution box with emergency power supply plug | |
| CN203607701U (en) | Centrally Installed high-voltage switchgear with electroscopic window | |
| CN206834842U (en) | Intelligent O＆M power distribution control system | |
| CN203278057U (en) | Intelligent prefabricated transformer substation | |
| CN221226884U (en) | Grid-connected contactor cabinet | |
| CN203278083U (en) | Miniature circuit breaker cabinet | |
| CN204992385U (en) | High -tension switch cabinet | |
| CN212810958U (en) | Ring main unit of side-mounted vacuum circuit breaker | |
| CN213959755U (en) | Wind power plant isolation system | |
| CN220107590U (en) | Switching device and wind power system | |
| CN104518440B (en) | The intelligent Prefabricated high-low voltage transformer substations of 10kV | |
| CN213364928U (en) | Alarm device for monitoring earth fault and accident trip of transformer substation | |
| CN112164615B (en) | Electric locking circuit of bus ground knife | |
| CN211017999U (en) | Low-voltage switch system and distribution board thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221107 Address after: No. 29, Fenghuang Road, Wenshan City, Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan Province Patentee after: Wenshan Power Supply Branch of Yunnan Power Grid Co.,Ltd. Address before: No. 29, Fenghuang Road, Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan 663000 Patentee before: YUNNAN WENSHAN ELECTRIC POWER Co.,Ltd. |
|
| TR01 | Transfer of patent right |