CN116599032B - Two-inlet-wire two-bus-connection electric control system - Google Patents
Two-inlet-wire two-bus-connection electric control system Download PDFInfo
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- CN116599032B CN116599032B CN202310379058.0A CN202310379058A CN116599032B CN 116599032 B CN116599032 B CN 116599032B CN 202310379058 A CN202310379058 A CN 202310379058A CN 116599032 B CN116599032 B CN 116599032B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/007—Arrangements for selectively connecting one or more loads to one or more power sources or power lines
- H02J3/0073—Arrangements for selectively connecting one or more loads to one or more power sources or power lines by providing alternative feeding paths when the main path fails
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Abstract
The invention discloses a two-inlet-wire two-bus-connection electric control system, which relates to the field of low-voltage distribution electric power, wherein three groups of normally-closed auxiliary contacts of a first inlet wire cabinet, one group of normally-closed auxiliary contacts of a second inlet wire cabinet, one group of normally-closed auxiliary contacts of the first bus-connection cabinet and one group of normally-closed auxiliary contacts of the second bus-connection cabinet form an interlocking control loop of the first inlet wire cabinet; the group of normally-closed auxiliary contacts of the second incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the first incoming line cabinet; according to the invention, the auxiliary contacts of the incoming line cabinets and the bus-tie cabinets are connected in series in the switching-on control loop, and the two incoming line cabinets and the two bus-tie cabinets are electrically interlocked, so that the electric power system can be operated in a crisis environment, and the problem of potential safety hazard caused by no electrical interlocking between the bus-tie cabinets is solved.
Description
Technical Field
The invention relates to the field of low-voltage distribution power, in particular to a two-inlet-wire two-bus-connection electric control system.
Background
The power substation and the distribution substation are used for realizing the economic transportation of electric energy and meeting the requirement of electric equipment on power supply quality, the terminal voltage of the generator is required to be transformed for a plurality of times, and the power plant is far away from an electric energy user, so that the power plant, the power substation and the electric energy user are connected by using power lines with different voltage levels, and the electric energy is transported to the user. In order to improve the safety, reliability, continuity, economy and utilization of the power supply, and to increase the utilization of the equipment, the total spare capacity of the whole area is often reduced by integrating a number of power plants, grids and end users, i.e. the power system, while the low voltage distribution system is part of the power system, which is usually at the end of the power system, closer to the end users.
Along with the increase of the number of electric equipment and the continuous development of electric equipment technology, the electric power consumer puts forward higher requirements on the reliability of a power supply system, and a power supply mode of two incoming lines and one bus-bar is commonly used in a low-voltage power distribution system, however, when two transformers are respectively arranged in different power distribution rooms, one power distribution room is often one less bus-bar cabinet, and one bus-bar cabinet is respectively configured at two sides for ensuring the safety of the electric equipment, so that the two incoming lines and one bus-bar are changed into the power supply mode of two incoming lines and two bus-bars. One of the bus-tie cabinets is in a normally closed state and is not interlocked in the existing power supply design scheme, and the bus-tie cabinet can be disconnected only in an overhaul state, so that the bus-tie cabinet cannot be operated in a crisis environment due to the fact that the bus-tie cabinet is in the normally closed state in daily use, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a two-inlet-wire two-bus-connection electric control system which can realize electric interlocking of an electric system and improve the reliability of the electric system.
In order to achieve the above object, the present invention provides the following solutions:
A two-wire two-bus electrical control system, comprising:
the three groups of normally closed auxiliary contacts of the first wire inlet cabinet, the group of normally closed auxiliary contacts of the second wire inlet cabinet, the group of normally closed auxiliary contacts of the first bus-tie cabinet and the group of normally closed auxiliary contacts of the second bus-tie cabinet form an interlocking control loop of the first wire inlet cabinet;
the group of normally-closed auxiliary contacts of the second incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the first incoming line cabinet;
The first switch-on button, the interlocking control loop of the first incoming line cabinet and the first switch-on coil form a switch-on control loop of the first incoming line cabinet;
The first closing button is connected with a control power supply and an interlocking control loop of the first incoming line cabinet respectively, the interlocking control loop of the first incoming line cabinet is connected with the first closing coil, and the first closing coil is connected with a zero line.
Optionally, the first opening button and the first opening coil form an opening control loop of the first inlet wire cabinet;
the first brake separating button is connected with the control power supply and the first brake separating coil respectively, and the first brake separating coil is connected with the zero line.
Optionally, the three sets of normally closed auxiliary contacts of the second incoming line cabinet, the set of normally closed auxiliary contacts of the first bus-tie cabinet and the set of normally closed auxiliary contacts of the second bus-tie cabinet form an interlocking control loop of the first incoming line cabinet;
The group of normally-closed auxiliary contacts of the first incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the second incoming line cabinet;
The fourth switching-on button, the interlocking control loop of the second incoming line cabinet and the fourth switching-on coil form a switching-on control loop of the second incoming line cabinet;
the fourth switch-on button is connected with a control power supply and an interlocking control loop of the second incoming line cabinet respectively, the interlocking control loop of the second incoming line cabinet is connected with the fourth switch-on coil, and the fourth switch-on coil is connected with a zero line.
Optionally, a fourth opening button and a fourth opening coil form an opening control loop of the second inlet wire cabinet;
the fourth brake separating button is connected with the control power supply and the fourth brake separating coil respectively, and the fourth brake separating coil is connected with the zero line.
Optionally, the two sets of normally closed auxiliary contacts of the first bus-tie cabinet, the set of normally closed auxiliary contacts of the first incoming line cabinet and the set of normally closed auxiliary contacts of the second incoming line cabinet form an interlocking control loop of the first bus-tie cabinet;
The group of normally closed auxiliary contacts of the first incoming line cabinet and the group of normally closed auxiliary contacts of the second incoming line cabinet are connected in parallel and led out to the first bus-bar cabinet;
The first bus-bar cabinet comprises a second switch-on button and a second switch-off button, and the second bus-bar cabinet comprises a third switch-on button and a third switch-off button;
a group of normally open auxiliary contacts of the second closing button and a group of normally open auxiliary contacts of the third closing button form a contact co-closing loop of the first bus-bar cabinet;
the group of normally open auxiliary contacts of the third closing button are connected in parallel with the group of normally open auxiliary contacts of the second closing button and led out to the first bus-bar cabinet;
The connection co-closing loop of the first bus-tie cabinet, the interlocking control loop of the first bus-tie cabinet and the second closing coil form a closing control loop of the first bus-tie cabinet;
the connection and closing loop of the first bus-tie cabinet is respectively connected with the control power supply and the interlocking control loop of the first bus-tie cabinet, the interlocking control of the first bus-tie cabinet is connected with the second closing coil, and the second closing coil is connected with the zero line.
Optionally, a group of normally open auxiliary contacts of the second switching-off button and a group of normally open auxiliary contacts of the third switching-off button form a communication same-split loop of the first bus-tie cabinet;
The group of normally open auxiliary contacts of the third brake separating button are connected in parallel with the group of normally open auxiliary contacts of the second brake separating button and led out to the first bus-bar cabinet;
The connection same-split loop and the second split coil of the first bus-tie cabinet form a split control loop of the first bus-tie cabinet;
The communication same-split loop of the first bus-tie cabinet is connected with the control power supply and the second split-gate coil respectively, and the second split-gate coil is connected with the zero line.
Optionally, the two sets of normally closed auxiliary contacts of the second bus-tie cabinet, the set of normally closed auxiliary contacts of the first incoming cabinet and the set of normally closed auxiliary contacts of the second incoming cabinet form an interlocking control loop of the first bus-tie cabinet;
the group of normally closed auxiliary contacts of the first incoming line cabinet and the group of normally closed auxiliary contacts of the second incoming line cabinet are connected in parallel and led out to the second bus-bar cabinet;
A group of normally open auxiliary contacts of the third closing button and a group of normally open auxiliary contacts of the second closing button form a contact co-closing loop of the second bus-bar cabinet;
the group of normally open auxiliary contacts of the second closing button are connected in parallel with the group of normally open auxiliary contacts of the third closing button and led out to the second bus-bar cabinet;
the connection co-closing loop of the second bus-tie cabinet, the interlocking control loop of the second bus-tie cabinet and the third closing coil form a closing control loop of the second bus-tie cabinet;
The contact co-closing loop of the second bus-tie cabinet is respectively connected with the control power supply and the interlocking control loop of the second bus-tie cabinet, the interlocking control loop of the second bus-tie cabinet is connected with the second closing coil, and the second closing coil is connected with the zero line.
Optionally, a group of normally open auxiliary contacts of the third switching-off button and a group of normally open auxiliary contacts of the second switching-off button form a communication same-split loop of the second bus-tie cabinet;
The group of normally open auxiliary contacts of the second opening button are connected in parallel with the group of normally open auxiliary contacts of the third opening button and led out to the second bus-bar cabinet;
The connection same-split loop and the third split coil of the second bus-tie cabinet form a split control loop of the second bus-tie cabinet;
The connecting same-split loop of the second bus-tie cabinet is connected with the control power supply and the third split-gate coil respectively, and the third split-gate coil is connected with the zero line.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
The three groups of normally closed auxiliary contacts of the first wire inlet cabinet, the group of normally closed auxiliary contacts of the second wire inlet cabinet, the group of normally closed auxiliary contacts of the first bus-tie cabinet and the group of normally closed auxiliary contacts of the second bus-tie cabinet form an interlocking control loop of the first wire inlet cabinet; the first switch-on button, the interlocking control loop of the first incoming line cabinet and the first switch-on coil form a switch-on control loop of the first incoming line cabinet; according to the invention, the auxiliary contacts of the incoming line cabinets and the bus-tie cabinets are connected in series in the switching-on control loop, and the two incoming line cabinets and the two bus-tie cabinets are electrically interlocked, so that the electric power system can be operated in a crisis environment, and the problem of potential safety hazard caused by no electrical interlocking between the bus-tie cabinets is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electrical main structure of a two-wire two-bus electrical control system according to the present invention;
fig. 2 is an electrical schematic diagram of a first incoming cabinet according to an embodiment of the invention;
fig. 3 is an electrical schematic diagram of a second incoming cabinet according to a second embodiment of the invention;
Fig. 4 is a schematic electrical structure of a first bus-bar cabinet according to a third embodiment of the present invention;
fig. 5 is an electrical schematic diagram of a second bus-bar according to a fourth embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a two-inlet two-bus-connected electrical control system, which realizes electrical interlocking between two inlet cabinets and two bus-connected cabinets by connecting auxiliary contacts of the inlet cabinets and the bus-connected cabinets in a closing control loop in series, so that the system can be operated in a crisis environment, and the problem of potential safety hazards caused by no electrical interlocking between the bus-connected cabinets is solved.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a two-inlet-wire two-bus electrical control system, which comprises: the three groups of normally closed auxiliary contacts of the first wire inlet cabinet, the group of normally closed auxiliary contacts of the second wire inlet cabinet, the group of normally closed auxiliary contacts of the first bus-tie cabinet and the group of normally closed auxiliary contacts of the second bus-tie cabinet form an interlocking control loop of the first wire inlet cabinet; the group of normally-closed auxiliary contacts of the second incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the first incoming line cabinet; the first switch-on button, the interlocking control loop of the first incoming line cabinet and the first switch-on coil form a switch-on control loop of the first incoming line cabinet; the first closing button is connected with a control power supply and an interlocking control loop of the first incoming line cabinet respectively, the interlocking control loop of the first incoming line cabinet is connected with the first closing coil, and the first closing coil is connected with a zero line.
In practical application, the first brake-separating button and the first brake-separating coil form a brake-separating control loop of the first wire inlet cabinet; the first brake separating button is connected with the control power supply and the first brake separating coil respectively, and the first brake separating coil is connected with the zero line.
Example 1
As shown in fig. 1, this embodiment includes a 1# incoming line cabinet, a 2# incoming line cabinet, a 1# bus-tie cabinet and a 2# bus-tie cabinet, which correspond to the first incoming line cabinet, the second incoming line cabinet, the first bus-tie cabinet and the second bus-tie cabinet, respectively, and each incoming line cabinet and bus-tie cabinet includes a breaker (the breaker of the 1# incoming line cabinet is 1QF, the breaker of the 1# bus-tie cabinet is 2QF, the breaker of the 2# bus-tie cabinet is 3QF, and the breaker of the 1# incoming line cabinet is 4 QF).
As shown in fig. 2, the interlocking control loop of the 1# incoming line cabinet is composed of three groups of normally closed auxiliary contacts of the circuit breaker 1QF of the cabinet, one group of normally closed auxiliary contacts of the circuit breaker 2QF of the 1# bus-tie cabinet, one group of normally closed auxiliary contacts of the circuit breaker 3QF of the 2# bus-tie cabinet and one group of normally closed auxiliary contacts of the circuit breaker 4QF of the 2# incoming line cabinet. Three groups of normally closed auxiliary contacts of the 1QF are respectively led out to an interlocking control loop of the 1# bus-tie cabinet, the 2# bus-tie cabinet and the 2# incoming line cabinet, simultaneously, three groups of normally closed auxiliary contacts which are connected in parallel are respectively led out of the 2QF, the 3QF and the 4QF, the auxiliary contacts after being connected in parallel are connected in a closing control loop of the circuit breaker in series, one end of the auxiliary contacts is connected with A1 SBH normally open point, 1SBH corresponds to a first closing button, the other end of the auxiliary contacts is connected with a first closing coil A2, and the A1 end of the first closing coil is connected with a zero line. Whether 2QF, 3QF and 4QF are switched on or not simultaneously, the control power supply of the cabinet can not influence the power supply of loops such as a switching-off indication loop and the like.
In practical application, the three groups of normally closed auxiliary contacts of the second incoming line cabinet, the group of normally closed auxiliary contacts of the first bus-tie cabinet and the group of normally closed auxiliary contacts of the second bus-tie cabinet form an interlocking control loop of the first incoming line cabinet; the group of normally-closed auxiliary contacts of the first incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the second incoming line cabinet; the fourth switching-on button, the interlocking control loop of the second incoming line cabinet and the fourth switching-on coil form a switching-on control loop of the second incoming line cabinet; the fourth switch-on button is connected with a control power supply and an interlocking control loop of the second incoming line cabinet respectively, the interlocking control loop of the second incoming line cabinet is connected with the fourth switch-on coil, and the fourth switch-on coil is connected with a zero line.
In practical application, the fourth brake-separating button and the fourth brake-separating coil form a brake-separating control loop of the second wire inlet cabinet; the fourth brake separating button is connected with the control power supply and the fourth brake separating coil respectively, and the fourth brake separating coil is connected with the zero line.
Example two
As shown in fig. 3, the interlocking control loop of the 2# incoming line cabinet is composed of three groups of normally closed auxiliary contacts of the circuit breaker 4QF of the cabinet, one group of normally closed auxiliary contacts of the circuit breaker 2QF of the 1# bus-tie cabinet, one group of normally closed auxiliary contacts of the circuit breaker 3QF of the 2# bus-tie cabinet and one group of normally closed auxiliary contacts of the circuit breaker 1QF of the 1# incoming line cabinet. The three groups of normally closed auxiliary contacts of the 4QF are respectively led out to the interlocking control loops of the 1# bus-tie cabinet, the 2# bus-tie cabinet and the 1# incoming line cabinet, meanwhile, the three groups of normally closed auxiliary contacts which are connected in parallel are respectively led out of the 2QF, the 3QF and the 1QF, the auxiliary contacts which are connected in parallel are connected in the closing control loop of the circuit breaker in series, one end of the auxiliary contacts is connected with a 4SBH normally open point, the 4SBH corresponds to a fourth closing button, the other end of the auxiliary contacts is connected with the A2 end of a fourth closing coil, and the A1 end of the fourth closing coil is connected with a zero line.
In practical application, the two groups of normally-closed auxiliary contacts of the first bus-tie cabinet, the group of normally-closed auxiliary contacts of the first incoming line cabinet and the group of normally-closed auxiliary contacts of the second incoming line cabinet form an interlocking control loop of the first bus-tie cabinet; the group of normally closed auxiliary contacts of the first incoming line cabinet and the group of normally closed auxiliary contacts of the second incoming line cabinet are connected in parallel and led out to the first bus-bar cabinet; the first bus-bar cabinet comprises a second switch-on button and a second switch-off button, and the second bus-bar cabinet comprises a third switch-on button and a third switch-off button; a group of normally open auxiliary contacts of the second closing button and a group of normally open auxiliary contacts of the third closing button form a contact co-closing loop of the first bus-bar cabinet; the group of normally open auxiliary contacts of the third closing button are connected in parallel with the group of normally open auxiliary contacts of the second closing button and led out to the first bus-bar cabinet; the connection co-closing loop of the first bus-tie cabinet, the interlocking control loop of the first bus-tie cabinet and the second closing coil form a closing control loop of the first bus-tie cabinet; the connection and closing loop of the first bus-tie cabinet is respectively connected with the control power supply and the interlocking control loop of the first bus-tie cabinet, the interlocking control of the first bus-tie cabinet is connected with the second closing coil, and the second closing coil is connected with the zero line.
In practical application, a group of normally open auxiliary contacts of the second switching-off button and a group of normally open auxiliary contacts of the third switching-off button form a communication same-split loop of the first bus-bar cabinet; the group of normally open auxiliary contacts of the third brake separating button are connected in parallel with the group of normally open auxiliary contacts of the second brake separating button and led out to the first bus-bar cabinet; the connection same-split loop and the second split coil of the first bus-tie cabinet form a split control loop of the first bus-tie cabinet; the communication same-split loop of the first bus-tie cabinet is connected with the control power supply and the second split-gate coil respectively, and the second split-gate coil is connected with the zero line.
Example III
As shown in fig. 4, the interlocking control circuit of the 1# bus bar is composed of two groups of normally closed auxiliary contacts of the breaker 2QF of the main bar, one group of normally closed auxiliary contacts of the breaker 1QF of the 1# incoming line bar and one group of normally closed auxiliary contacts of the breaker 4QF of the 2# incoming line bar. The contact co-close loop and the contact co-split loop of the 1# master-linkage cabinet are composed of two groups of normally open auxiliary contacts of the cabinet button 2SBH, two groups of normally open auxiliary contacts of the cabinet button 2SBF, one group of normally open auxiliary contacts of the 2# master-linkage cabinet button 3SBH and one group of normally open auxiliary contacts of the 2# master-linkage cabinet button 3 SBF.
Two groups of normally open auxiliary contacts of the 2SBH are respectively led out to a closing control loop of the cabinet and the 2# bus cabinet, a group of button normally open auxiliary contacts of the 3SBH which are connected in parallel are simultaneously led out of the 2# bus cabinet, the auxiliary contacts after being connected in parallel are connected in series in the closing control loop of the circuit breaker, one end of the auxiliary contacts is connected with a control power supply, the other end of the auxiliary contacts is connected with a series end of the auxiliary contacts after being connected in parallel, which is connected with a normally closed auxiliary contact of the 1QF and a normally closed auxiliary contact of the 4QF, and the cabinet and the 2# bus cabinet are combined together through closing of the buttons 2SBH or 3 SBH.
Two groups of normally open auxiliary contacts of the 2SBF are respectively led out to the brake separating control loop of the cabinet and the 2# bus-connected cabinet, meanwhile, one group of button normally open auxiliary contacts of the 3SBF which are connected in parallel are led out of the 2# bus-connected cabinet, the auxiliary contacts after being connected in parallel are connected in series in the brake separating control loop of the circuit breaker, one end of the auxiliary contacts is connected with a control power supply, the other end of the auxiliary contacts is connected with the C2 end of the second brake separating coil, and the same division of the cabinet and the 2# bus-connected cabinet is realized through the closing of the button 2SBF or the 3 SBF.
In practical application, the two groups of normally-closed auxiliary contacts of the second bus-tie cabinet, the group of normally-closed auxiliary contacts of the first incoming line cabinet and the group of normally-closed auxiliary contacts of the second incoming line cabinet form an interlocking control loop of the first bus-tie cabinet; the group of normally closed auxiliary contacts of the first incoming line cabinet and the group of normally closed auxiliary contacts of the second incoming line cabinet are connected in parallel and led out to the second bus-bar cabinet; a group of normally open auxiliary contacts of the third closing button and a group of normally open auxiliary contacts of the second closing button form a contact co-closing loop of the second bus-bar cabinet; the group of normally open auxiliary contacts of the second closing button are connected in parallel with the group of normally open auxiliary contacts of the third closing button and led out to the second bus-bar cabinet; the connection co-closing loop of the second bus-tie cabinet, the interlocking control loop of the second bus-tie cabinet and the third closing coil form a closing control loop of the second bus-tie cabinet; the contact co-closing loop of the second bus-tie cabinet is respectively connected with the control power supply and the interlocking control loop of the second bus-tie cabinet, the interlocking control loop of the second bus-tie cabinet is connected with the second closing coil, and the second closing coil is connected with the zero line.
In practical application, a group of normally open auxiliary contacts of the third switching-off button and a group of normally open auxiliary contacts of the second switching-off button form a communication same-split loop of the second bus-tie cabinet; the group of normally open auxiliary contacts of the second opening button are connected in parallel with the group of normally open auxiliary contacts of the third opening button and led out to the second bus-bar cabinet; the connection same-split loop and the third split coil of the second bus-tie cabinet form a split control loop of the second bus-tie cabinet; the connecting same-split loop of the second bus-tie cabinet is connected with the control power supply and the third split-gate coil respectively, and the third split-gate coil is connected with the zero line.
Example IV
As shown in fig. 5, the interlocking control circuit of the 2# bus bar is composed of two groups of normally closed auxiliary contacts of the breaker 3QF of the main bar, one group of normally closed auxiliary contacts of the breaker 1QF of the 1# incoming line bar and one group of normally closed auxiliary contacts of the breaker 4QF of the 2# incoming line bar. The contact co-close loop and the contact co-split loop of the 1# master batch cabinet are composed of two groups of normally open auxiliary contacts of the cabinet button 3SBH, two groups of normally open auxiliary contacts of the cabinet button 3SBF, one group of normally open auxiliary contacts of the 1# master batch cabinet button 2SBH and one group of normally open auxiliary contacts of the 1# master batch cabinet button 2 SBF.
Two groups of normally open auxiliary contacts of the 3SBH are respectively led out to a closing control loop of the cabinet and the 1# bus cabinet, a group of button normally open auxiliary contacts of the 2SBH which are connected in parallel are simultaneously led out of the 1# bus cabinet, the auxiliary contacts after being connected in parallel are connected in series in the closing control loop of the circuit breaker, one end of the auxiliary contacts is connected with a control power supply, the other end of the auxiliary contacts is connected with a series end of the auxiliary contacts after being connected in parallel, which is connected with the normally closed auxiliary contacts of the 1QF and the normally closed auxiliary contacts of the 4QF, and the cabinet and the 1# bus cabinet are combined together through closing of the buttons 3SBH or 2 SBH.
Two groups of normally open auxiliary contacts of the 3SBF are respectively led out to the brake separating control loops of the cabinet and the 1# bus-connected cabinet, meanwhile, one group of button normally open auxiliary contacts of the 2SBF which are connected in parallel are led out of the 1# bus-connected cabinet, the auxiliary contacts after being connected in parallel are connected in series in the brake separating control loop of the circuit breaker, one end of the auxiliary contacts is connected with a control power supply, the other end of the auxiliary contacts is connected with the C2 end of a third brake separating coil, and the same division of the cabinet and the 1# bus-connected cabinet is realized through the closing of the button 2SBF or the 3 SBF.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. Two inlet wire two female electric control system that allies oneself with, characterized in that includes:
the three groups of normally closed auxiliary contacts of the first wire inlet cabinet, the group of normally closed auxiliary contacts of the second wire inlet cabinet, the group of normally closed auxiliary contacts of the first bus-tie cabinet and the group of normally closed auxiliary contacts of the second bus-tie cabinet form an interlocking control loop of the first wire inlet cabinet;
the group of normally-closed auxiliary contacts of the second incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the first incoming line cabinet;
The first switch-on button, the interlocking control loop of the first incoming line cabinet and the first switch-on coil form a switch-on control loop of the first incoming line cabinet;
The first closing button is respectively connected with a control power supply and an interlocking control loop of the first incoming line cabinet, the interlocking control loop of the first incoming line cabinet is connected with the first closing coil, and the first closing coil is connected with a zero line;
The two groups of normally-closed auxiliary contacts of the first bus-tie cabinet, the group of normally-closed auxiliary contacts of the first incoming line cabinet and the group of normally-closed auxiliary contacts of the second incoming line cabinet form an interlocking control loop of the first bus-tie cabinet;
The group of normally closed auxiliary contacts of the first incoming line cabinet and the group of normally closed auxiliary contacts of the second incoming line cabinet are connected in parallel and led out to the first bus-bar cabinet;
The first bus-bar cabinet comprises a second switch-on button and a second switch-off button, and the second bus-bar cabinet comprises a third switch-on button and a third switch-off button;
a group of normally open auxiliary contacts of the second closing button and a group of normally open auxiliary contacts of the third closing button form a contact co-closing loop of the first bus-bar cabinet;
the group of normally open auxiliary contacts of the third closing button are connected in parallel with the group of normally open auxiliary contacts of the second closing button and led out to the first bus-bar cabinet;
The connection co-closing loop of the first bus-tie cabinet, the interlocking control loop of the first bus-tie cabinet and the second closing coil form a closing control loop of the first bus-tie cabinet;
The connecting and combining loop of the first bus-tie cabinet is respectively connected with the control power supply and the interlocking control loop of the first bus-tie cabinet, the interlocking control of the first bus-tie cabinet is connected with the second closing coil, and the second closing coil is connected with the zero line;
a group of normally open auxiliary contacts of the second switching-off button and a group of normally open auxiliary contacts of the third switching-off button form a communication same-split loop of the first bus-tie cabinet;
The group of normally open auxiliary contacts of the third brake separating button are connected in parallel with the group of normally open auxiliary contacts of the second brake separating button and led out to the first bus-bar cabinet;
The connection same-split loop and the second split coil of the first bus-tie cabinet form a split control loop of the first bus-tie cabinet;
The communication same-split loop of the first bus-tie cabinet is connected with the control power supply and the second split-gate coil respectively, and the second split-gate coil is connected with the zero line.
2. The two-wire two-bus electrical control system of claim 1, wherein a first brake-off button and a first brake-off coil form a brake-off control loop of the first wire-in cabinet;
the first brake separating button is connected with the control power supply and the first brake separating coil respectively, and the first brake separating coil is connected with the zero line.
3. The two-wire two-bus electrical control system of claim 2, wherein three sets of normally closed auxiliary contacts of the second wire inlet cabinet, one set of normally closed auxiliary contacts of the first bus-bar cabinet, and one set of normally closed auxiliary contacts of the second bus-bar cabinet form an interlocking control loop of the second wire inlet cabinet;
The group of normally-closed auxiliary contacts of the first incoming line cabinet, the group of normally-closed auxiliary contacts of the first bus-tie cabinet and the group of normally-closed auxiliary contacts of the second bus-tie cabinet are connected in parallel and led out to the second incoming line cabinet;
The fourth switching-on button, the interlocking control loop of the second incoming line cabinet and the fourth switching-on coil form a switching-on control loop of the second incoming line cabinet;
the fourth switch-on button is connected with a control power supply and an interlocking control loop of the second incoming line cabinet respectively, the interlocking control loop of the second incoming line cabinet is connected with the fourth switch-on coil, and the fourth switch-on coil is connected with a zero line.
4. The two-wire two-bus electrical control system as set forth in claim 3, wherein a fourth brake-off button and a fourth brake-off coil form a brake-off control loop of the second wire-in cabinet;
the fourth brake separating button is connected with the control power supply and the fourth brake separating coil respectively, and the fourth brake separating coil is connected with the zero line.
5. The two-wire two-bus electrical control system according to claim 1, wherein two sets of normally-closed auxiliary contacts of the second bus-bar cabinet, one set of normally-closed auxiliary contacts of the first wire-incoming cabinet and one set of normally-closed auxiliary contacts of the second wire-incoming cabinet form an interlocking control loop of the second bus-bar cabinet;
the group of normally closed auxiliary contacts of the first incoming line cabinet and the group of normally closed auxiliary contacts of the second incoming line cabinet are connected in parallel and led out to the second bus-bar cabinet;
A group of normally open auxiliary contacts of the third closing button and a group of normally open auxiliary contacts of the second closing button form a contact co-closing loop of the second bus-bar cabinet;
the group of normally open auxiliary contacts of the second closing button are connected in parallel with the group of normally open auxiliary contacts of the third closing button and led out to the second bus-bar cabinet;
the connection co-closing loop of the second bus-tie cabinet, the interlocking control loop of the second bus-tie cabinet and the third closing coil form a closing control loop of the second bus-tie cabinet;
The contact co-closing loop of the second bus-tie cabinet is respectively connected with the control power supply and the interlocking control loop of the second bus-tie cabinet, the interlocking control loop of the second bus-tie cabinet is connected with the second closing coil, and the second closing coil is connected with the zero line.
6. The two-wire two-bus electrical control system of claim 5, wherein a set of normally open auxiliary contacts of the third trip button and a set of normally open auxiliary contacts of the second trip button form a communication common-split loop of the second bus-bar cabinet;
The group of normally open auxiliary contacts of the second opening button are connected in parallel with the group of normally open auxiliary contacts of the third opening button and led out to the second bus-bar cabinet;
The connection same-split loop and the third split coil of the second bus-tie cabinet form a split control loop of the second bus-tie cabinet;
The connecting same-split loop of the second bus-tie cabinet is connected with the control power supply and the third split-gate coil respectively, and the third split-gate coil is connected with the zero line.
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| CN202310379058.0A CN116599032B (en) | 2023-04-11 | 2023-04-11 | Two-inlet-wire two-bus-connection electric control system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203707773U (en) * | 2014-01-22 | 2014-07-09 | 中山市明阳电器有限公司 | A three-incoming two-connection power distribution system |
| CN206059917U (en) * | 2016-08-10 | 2017-03-29 | 安徽工程大学机电学院 | A kind of one mother electrical interlocking system of two inlet wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2853492B2 (en) * | 1992-12-14 | 1999-02-03 | 三菱電機株式会社 | Electrical interlock between switches |
| CN206283258U (en) * | 2016-12-08 | 2017-06-27 | 泰豪科技股份有限公司 | A kind of contact of two inlet wire one shutting-brake control electrical structure and power distribution equipment |
| CN209016795U (en) * | 2018-12-20 | 2019-06-21 | 弘乐集团有限公司 | A kind of two inlet wire of low pressure, one contact electrical interlocking system |
| CN210535572U (en) * | 2019-12-09 | 2020-05-15 | 弘乐集团有限公司 | Low-voltage three-incoming-line two-contact interlocking system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203707773U (en) * | 2014-01-22 | 2014-07-09 | 中山市明阳电器有限公司 | A three-incoming two-connection power distribution system |
| CN206059917U (en) * | 2016-08-10 | 2017-03-29 | 安徽工程大学机电学院 | A kind of one mother electrical interlocking system of two inlet wire |
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