CN103840546B - Electric power system - Google Patents
Electric power system Download PDFInfo
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- CN103840546B CN103840546B CN201410080884.6A CN201410080884A CN103840546B CN 103840546 B CN103840546 B CN 103840546B CN 201410080884 A CN201410080884 A CN 201410080884A CN 103840546 B CN103840546 B CN 103840546B
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Abstract
A kind of electric power system, comprising: the first power supply, second source, the first mains switch, second source switch, interconnection switch, the first bus, the second bus and first control circuit; Described first control circuit is corresponding with described first mains switch, described first control circuit is suitable for controlling described first mains switch when the first combined floodgate path is formed and enters "on" position, described first control circuit comprises: combined floodgate branch road, switching-on mechanism and interlocking contact circuit, described interlocking contact circuit connects described combined floodgate branch road and switching-on mechanism, and described interlocking contact circuit is suitable for being communicated with when described second source switch enters gate-dividing state described combined floodgate branch road and switching-on mechanism to form described first combined floodgate path.
Description
Technical field
The present invention relates to the field of strong electricity of electricity, particularly relate to a kind of electric power system.
Background technology
Fig. 1 is a kind of electric power system, and the first power supply 10A and second source 10B can provide the voltage of several ten thousand volts, and the first mains switch 100A, second source switch 100B and interconnection switch 100TIE are high-voltage switch gear.First mains switch 100A first end connects the first power supply 10A, and the second end connects described first bus BUS1.Second source switch 100B first end connects second source 10B, and the second end connects the second bus BUS2.The first end of interconnection switch 100TIE connects the first bus BUS1, and the second end connects the second bus BUS2.First bus BUS1 connects n load: load 101A is to load 10nA, and the second bus BUS2 also connects n load: load 101B is to load 10nB.
In above-mentioned electric power system, first control circuit 110A can control the first mains switch 100A and enter "on" position or gate-dividing state, second control circuit 110B can control second source switch 100B and enter "on" position or gate-dividing state, and the 3rd control circuit 110TIE can control interconnection switch 100TIE and enter "on" position or gate-dividing state.
When second source 10B powers, first mains switch 100A is in gate-dividing state, second source switch 100B enters "on" position, interconnection switch 100TIE is in "on" position, voltage transmission to the first bus BUS1 that second source 10B provides and the second bus BUS2, is supplied to load 101A to load 10nA and load 101B respectively to load 10nB.Urgent switching device shifter is for controlling first control circuit 110A, second control circuit 110B and the 3rd control circuit 110TIE sends instruction.When urgent switching device shifter breaks down, first control circuit 110A may send false command, the first mains switch 100A is caused also to enter "on" position, if the voltage that the first power supply 10A and second source 10B provides is in magnitude of voltage or phase place deviation to some extent, can make whole electric power system that very serious short circuit problem occurs, cause serious accident.
Summary of the invention
The problem that the present invention solves is the failed shorted problem that the urgent switching device shifter of existing electric power system exists.
For solving the problem, the invention provides a kind of electric power system, comprising: the first power supply, second source, the first mains switch, second source switch, interconnection switch, the first bus, the second bus and first control circuit;
Described first control circuit is corresponding with described first mains switch, described first control circuit is suitable for controlling described first mains switch when the first combined floodgate path is formed and enters "on" position, described first control circuit comprises: combined floodgate branch road, switching-on mechanism and interlocking contact circuit, described interlocking contact circuit connects described combined floodgate branch road and switching-on mechanism, and described interlocking contact circuit is suitable for being communicated with when described second source switch enters gate-dividing state described combined floodgate branch road and switching-on mechanism to form described first combined floodgate path;
The first end of described first mains switch connects described first power supply, and the second end of described first mains switch connects described first bus;
The first end of described second source switch connects described second source, and the second end of described second source switch connects described second bus;
The first end of described interconnection switch connects described first bus, and the second end of described interconnection switch connects described second bus.
Optionally, described electric power system also comprises: status switch, and described interlocking contact circuit comprises: the first interlocking contact and the second interlocking contact;
Described first interlocking contact connects first end and the combined floodgate branch road of described status switch, described second interlocking contact connects the second end and the switching-on mechanism of described status switch, and described status switch is suitable for entering closure state when described second source switch enters gate-dividing state.
Optionally, described first control circuit is also suitable for controlling described first mains switch when the second combined floodgate path is formed and enters "on" position, and described first control circuit also comprises: the contact circuit of change over switch and voltage comparator;
The first end of described change over switch connects described combined floodgate branch road, second end of described change over switch connects the contact circuit of described voltage comparator, the contact circuit of described voltage comparator connects described switching-on mechanism, and the contact circuit of described voltage comparator is suitable for being communicated with described combined floodgate branch road, change over switch and switching-on mechanism to form described second combined floodgate path when described change over switch is in closure state and the voltage that provides of described first power supply and second source is equal.
Optionally, described electric power system also comprises: voltage comparator, and the contact circuit of described voltage comparator comprises: the first contact of voltage comparator and the second contact of voltage comparator;
First contact of described voltage comparator connects the second end of described voltage comparator and change over switch, second contact of described voltage comparator connects described voltage comparator and switching-on mechanism, and described voltage comparator is suitable for voltage that more described first power supply and second source provide and is communicated with the first contact of described voltage comparator and the second contact of voltage comparator when the voltage that described first power supply and second source provide is equal.
Optionally, described electric power system also comprises: warning device, and described warning device is suitable for giving the alarm when described change over switch is in closure state.
Optionally, described first control circuit also comprises: the first separating brake is issued an order mechanism and the first brake separating mechanism, described first separating brake mechanism of issuing an order connects described first brake separating mechanism, and described first separating brake mechanism of issuing an order is made up of the first mechanism and Fisrt fault mechanism of issuing an order of manually issuing an order.
Optionally, described electric power system also comprises: the 3rd control circuit, described 3rd control circuit is corresponding with described interconnection switch, described 3rd control circuit comprises: the second separating brake is issued an order mechanism and the second brake separating mechanism, described second separating brake mechanism of issuing an order connects described second brake separating mechanism, and described second separating brake mechanism of issuing an order is made up of the second mechanism and the second fault mechanism of issuing an order of manually issuing an order.
Optionally, the magnitude of voltage of voltage that described direct current supply line provides is 110V.
Optionally, described first control circuit also comprises: the first separating brake is issued an order mechanism and the first brake separating mechanism, described second separating brake issue an order mechanism connect described second brake separating mechanism, described first separating brake mechanism and the second separating brake mechanism structure of issuing an order of issuing an order is identical, and described first brake separating mechanism is identical with the second brake separating mechanism structure.
Optionally, the magnitude of voltage of voltage that described first power supply and second source provide is 10kV to 35kV.
Compared with prior art, first mains switch associates with second source switch by technical scheme of the present invention, first control circuit just can control the first mains switch and enter "on" position when second source switch enters gate-dividing state, so, when second source switch does not enter gate-dividing state, even if break down for the urgent switching device shifter controlling first control circuit, first control circuit also can not control the first mains switch and enter "on" position, thus avoids the generation of short circuit problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing electric power system;
Fig. 2 is the structural representation of the electric power system of the embodiment of the present invention;
Fig. 3 is the structural representation of the first control circuit of the embodiment of the present invention;
Fig. 4 is the structural representation of the 3rd control circuit of the embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.
As shown in Figure 2, the electric power system that the embodiment of the present invention provides comprises: the first power supply 10A, second source 10B, the first mains switch 100A, second source switch 100B, interconnection switch 100TIE, the first bus BUS1, the second bus BUS2, first control circuit 110A, second control circuit 110B and the 3rd control circuit 110TIE.
The first end of described first mains switch 100A connects the described first bus BUS1 of the second end connection of described first power supply 10A, described first mains switch 100A.
The first end of described second source switch 100B connects described second source 10B, and second end of described second source switch 100B connects described second bus BUS2.
The first end of described interconnection switch 100TIE connects the described second bus BUS2 of the second end connection of described first bus BUS1, described interconnection switch 100TIE.
Described first control circuit 110A is corresponding with the first mains switch 100A, can control the first mains switch 100A and enter "on" position or gate-dividing state.Described second control circuit 110B is corresponding with second source switch 100B, can control second source switch 100B and enter "on" position or gate-dividing state.Described 3rd control circuit 110TIE is corresponding with interconnection switch 100TIE, can control interconnection switch 100TIE and enter "on" position or gate-dividing state.
The magnitude of voltage of the voltage that described first power supply 10A and second source 10B provides is 10kV to 35kV, such as 22.8kV.First bus BUS1 connects n load: load 101A is to load 10nA, and the second bus BUS2 also connects n load: load 101B is to load 10nB.First mains switch 100A, second source switch 100B and interconnection switch 100TIE are high-voltage switch gear.
In actual applications, first control circuit 110A can be identical with the composition structure of second control circuit 110B, so the present embodiment only with first control circuit 110A as an example, those skilled in the art can know the circuit structure of second control circuit 110B according to the circuit structure of first control circuit 110A.
As shown in Figure 3, described first control circuit 110A is suitable for controlling described first mains switch 100A enter "on" position when the first combined floodgate path being formed.Described first control circuit 110A comprises: combined floodgate branch road, switching-on mechanism 15 and interlocking contact circuit, described interlocking contact circuit connects described combined floodgate branch road and switching-on mechanism, and described interlocking contact circuit is suitable for being communicated with when described second source switch enters gate-dividing state described combined floodgate branch road and switching-on mechanism to form described first combined floodgate path.
Described combined floodgate branch road comprises: first of change over switch run contact 1, change over switch second run contact 2, close a floodgate issue an order mechanism 3, the first status contacts 4 of vacuum switch body, vacuum switch body the second status contacts 5, first spare contact 6, second spare contact 7, first tripping operation latch contact 8, second to trip latch contact 9, the first contact 10 of protection relay and the second contact 11 of protection relay.First of change over switch runs contact 1 and connects direct current supply line, and the magnitude of voltage of the voltage that described direct current supply line provides is 110V.
Those skilled in the art can know operation principle and the course of work of combined floodgate branch road and switching-on mechanism 15 according to prior art, and, the combined floodgate branch road of other structures can be selected, repeat no more herein.
The interlocking contact circuit be connected with combined floodgate branch road comprises: the first interlocking contact 12 and the second interlocking contact 13.First interlocking contact 12 is connected combined floodgate branch road and is connected the first end being arranged in the status switch 27 of second control circuit 110B by longer electric wire.Second interlocking contact 13 is connected switching-on mechanism 15 and is connected the second end being arranged in the status switch 27 of second control circuit 110B by longer electric wire.
In the present embodiment, when powering-off state occurs second source 10B, second control circuit 110B controls second source switch 100B and enters gate-dividing state, and the status switch 27 corresponding with second source switch 100B state enters closure state.
In this case, the status switch 27 that first interlocking contact 12 is closed with the second interlocking contact 13 is communicated with, first interlocking contact 12 is communicated with described combined floodgate branch road and switching-on mechanism 15 with the second interlocking contact 13, and combined floodgate branch road, interlocking contact circuit and switching-on mechanism 15 constitute the first combined floodgate path of first control circuit 110A.Now, the first control circuit 110A forming the first combined floodgate path can control the first mains switch 100A and enter "on" position, thus completes and supply power to by second source 10B the switching that the first power supply 10A powers.
The first control circuit 110A of the present embodiment just can control the first mains switch 100A when second source switch 100B enters gate-dividing state and enter "on" position.So, when second source switch 100B does not enter gate-dividing state, even if the urgent switching device shifter for controlling first control circuit 110A breaks down produce wrong reclosing command, first control circuit 110A also can not control the first mains switch 100A and enter "on" position, thus avoids the generation of short circuit problem.
Electric power system described in the present embodiment can also comprise: voltage comparator, and described first control circuit 110A also can comprise: the contact circuit of change over switch and voltage comparator.Described first control circuit is also suitable for controlling described first mains switch 100A when the second combined floodgate path is formed and enters "on" position.
The first end of described change over switch 16 connects combined floodgate branch road, and the second end of described change over switch 16 connects the contact circuit of voltage comparator, and the contact circuit of described voltage comparator connects described switching-on mechanism 15.The contact circuit of described voltage comparator is suitable for being communicated with described combined floodgate branch road, change over switch 16 and switching-on mechanism 15 to form described second combined floodgate path when described change over switch 16 is in closure state and the voltage that provides of described first power supply 10A and second source 10B is equal.
The contact circuit of described voltage comparator can comprise: the first contact 141 of voltage comparator and the second contact 142 of voltage comparator.
The voltage that first contact 141 of voltage comparator and the second contact 142 of voltage comparator are suitable for providing at the first power supply 10A and second source 10B is connected time equal.Concrete, the first contact 141 of described voltage comparator connects the second end of described voltage comparator and change over switch 16, and the second contact 142 of described voltage comparator connects described voltage comparator and switching-on mechanism 15.Described voltage comparator is suitable for the voltage that more described first power supply 10A and second source 10B provides, and is communicated with the first contact 141 of described voltage comparator and the second contact 142 of voltage comparator when the voltage that described first power supply 10A and second source 10B provide is equal.
Described change over switch 16 can be manual gas shut off, when change over switch 16 is in closure state and the second contact 142 of the first contact 141 of voltage comparator and voltage comparator is connected, the contact circuit of combined floodgate branch road, change over switch 16, voltage comparator and switching-on mechanism 15 form the second combined floodgate path of first control circuit 110A, and the first control circuit 110A forming the second combined floodgate path can control the first mains switch 100A and enter "on" position.
Electric power system described in the present embodiment can also comprise: warning device, and described warning device is suitable for giving the alarm when described change over switch 16 enters closure state.
Continue with reference to figure 3, described first control circuit also comprises: the first separating brake is issued an order mechanism 18 and the first brake separating mechanism 19.Described first separating brake mechanism 18 of issuing an order connects described first brake separating mechanism 19.Described first separating brake mechanism of issuing an order is made up of the first mechanism and Fisrt fault mechanism of issuing an order of manually issuing an order.Described first separating brake is issued an order after mechanism 18 is communicated with the first brake separating mechanism 19 can form the first separating brake path, and first control circuit 110A can control the first mains switch 100A and enter gate-dividing state after the first separating brake path is formed.
According to prior art, those skilled in the art can know that the first separating brake is issued an order the structure of mechanism 18 and the first brake separating mechanism 19, operation principle and the course of work, and, other existing structures can be selected, repeat no more herein.
As shown in Figure 4, the 3rd control circuit 110TIE described in the present embodiment can comprise: the second separating brake is issued an order mechanism 38 and the second brake separating mechanism 39, described second separating brake mechanism 38 of issuing an order connects described second brake separating mechanism 39, and described second separating brake mechanism 38 of issuing an order is made up of the second mechanism and the second fault mechanism of issuing an order of manually issuing an order.Described second separating brake is issued an order after mechanism 38 is communicated with the second brake separating mechanism 39 can form a point second lock path, and the 3rd control circuit 110TIE can control interconnection switch 100TIE and enter gate-dividing state after the second separating brake path is formed.Issue an order in mechanism 38 at described second separating brake, second manually issues an order can form a point second separating brake path after mechanism can be communicated with the second brake separating mechanism 3, and the second fault is issued an order after mechanism also can be communicated with the second brake separating mechanism 3 can form a point second separating brake path.
Second separating brake issues an order mechanism 38 can be identical with the issue an order structure of mechanism 18 of the first separating brake, and the second brake separating mechanism 39 is identical with the structure of the first brake separating mechanism 19, repeats no more herein.
In the prior art, the second separating brake mechanism 38 of issuing an order also comprises interlocking and to issue an order mechanism except the second mechanism and the second fault mechanism of issuing an order of manually issuing an order.Described interlocking mechanism of issuing an order can be communicated with to form separating brake path with the second brake separating mechanism 3 when the first mains switch 100A is all in gate-dividing state with second source switch 100B, makes the 3rd control circuit 110TIE control interconnection switch 100TIE and enters gate-dividing state.But, when second source 10B power-off, second control circuit 110B controls second source switch 100B and enters gate-dividing state, and the first mains switch 100A is also in gate-dividing state, causes the 3rd control circuit 110TIE automatically to control interconnection switch 100TIE like this and enters gate-dividing state.In this case, powering to enable the first power supply 10A, after control first mains switch 100A enters "on" position, again can only control interconnection switch 100TIE and entering "on" position.Electrical source exchange efficiency is significantly reduced to the operation of interconnection switch 100TIE.
In the present embodiment, second separating brake mechanism 38 of issuing an order only is made up of the second mechanism and the second fault mechanism of issuing an order of manually issuing an order, second separating brake mechanism 38 of issuing an order does not comprise interlocking and to issue an order mechanism, this makes interconnection switch 100TIE automatically can not enter gate-dividing state when the first mains switch 100A and second source switch 100B is all in gate-dividing state, improves electrical source exchange efficiency.
The electric power system of the embodiment of the present invention can be sectionalized single busbar connection electric power system.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (8)
1. an electric power system, is characterized in that, comprising: the first power supply, second source, the first mains switch, second source switch, interconnection switch, the first bus, the second bus and first control circuit;
Described first control circuit is corresponding with described first mains switch, described first control circuit is suitable for controlling described first mains switch when the first combined floodgate path is formed and enters "on" position, described first control circuit comprises: combined floodgate branch road, switching-on mechanism and interlocking contact circuit, described interlocking contact circuit connects described combined floodgate branch road and switching-on mechanism, and described interlocking contact circuit is suitable for being communicated with when described second source switch enters gate-dividing state described combined floodgate branch road and switching-on mechanism to form described first combined floodgate path;
The first end of described first mains switch connects described first power supply, and the second end of described first mains switch connects described first bus;
The first end of described second source switch connects described second source, and the second end of described second source switch connects described second bus;
The first end of described interconnection switch connects described first bus, and the second end of described interconnection switch connects described second bus;
The magnitude of voltage of the voltage that described first power supply and second source provide is 10kV to 35kV.
2. electric power system as claimed in claim 1, it is characterized in that, also comprise: status switch, described interlocking contact circuit comprises: the first interlocking contact and the second interlocking contact;
Described first interlocking contact connects first end and the combined floodgate branch road of described status switch, described second interlocking contact connects the second end and the switching-on mechanism of described status switch, and described status switch is suitable for entering closure state when described second source switch enters gate-dividing state.
3. electric power system as claimed in claim 1, it is characterized in that, described first control circuit is also suitable for controlling described first mains switch when the second combined floodgate path is formed and enters "on" position, and described first control circuit also comprises: the contact circuit of change over switch and voltage comparator;
The first end of described change over switch connects described combined floodgate branch road, second end of described change over switch connects the contact circuit of described voltage comparator, the contact circuit of described voltage comparator connects described switching-on mechanism, and the contact circuit of described voltage comparator is suitable for being communicated with described combined floodgate branch road, change over switch and switching-on mechanism to form described second combined floodgate path when described change over switch is in closure state and the voltage that provides of described first power supply and second source is equal.
4. electric power system as claimed in claim 3, it is characterized in that, also comprise: voltage comparator, the contact circuit of described voltage comparator comprises: the first contact of voltage comparator and the second contact of voltage comparator;
First contact of described voltage comparator connects the second end of described voltage comparator and change over switch, second contact of described voltage comparator connects described voltage comparator and switching-on mechanism, and described voltage comparator is suitable for voltage that more described first power supply and second source provide and is communicated with the first contact of described voltage comparator and the second contact of voltage comparator when the voltage that described first power supply and second source provide is equal.
5. electric power system as claimed in claim 3, it is characterized in that, also comprise: warning device, described warning device is suitable for giving the alarm when described change over switch is in closure state.
6. electric power system as claimed in claim 1, it is characterized in that, described first control circuit also comprises: the first separating brake is issued an order mechanism and the first brake separating mechanism, described first separating brake mechanism of issuing an order connects described first brake separating mechanism, and described first separating brake mechanism of issuing an order is made up of the first mechanism and Fisrt fault mechanism of issuing an order of manually issuing an order.
7. electric power system as claimed in claim 1, it is characterized in that, also comprise: the 3rd control circuit, described 3rd control circuit is corresponding with described interconnection switch, described 3rd control circuit comprises: the second separating brake is issued an order mechanism and the second brake separating mechanism, described second separating brake mechanism of issuing an order connects described second brake separating mechanism, and described second separating brake mechanism of issuing an order is made up of the second mechanism and the second fault mechanism of issuing an order of manually issuing an order.
8. electric power system as claimed in claim 7, it is characterized in that, described first control circuit also comprises: the first separating brake is issued an order mechanism and the first brake separating mechanism, described second separating brake issue an order mechanism connect described second brake separating mechanism, described first separating brake mechanism and the second separating brake mechanism structure of issuing an order of issuing an order is identical, and described first brake separating mechanism is identical with the second brake separating mechanism structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080884.6A CN103840546B (en) | 2014-03-06 | 2014-03-06 | Electric power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080884.6A CN103840546B (en) | 2014-03-06 | 2014-03-06 | Electric power system |
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| CN103840546A CN103840546A (en) | 2014-06-04 |
| CN103840546B true CN103840546B (en) | 2015-11-25 |
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| CN201410080884.6A Active CN103840546B (en) | 2014-03-06 | 2014-03-06 | Electric power system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104701973B (en) * | 2015-04-08 | 2016-09-21 | 常熟开关制造有限公司(原常熟开关厂） | The control method of parallel connection power supply conversion equipment and parallel connection power supply conversion equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227091A (en) * | 2007-11-26 | 2008-07-23 | 江苏省电力公司苏州供电公司 | Intelligent power utilization system |
| CN101969227A (en) * | 2010-11-15 | 2011-02-09 | 湖南雁能森源电力设备有限公司 | Self-powered automatic switching and closing high-voltage control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012010478A (en) * | 2010-06-24 | 2012-01-12 | Cyber Trans Japan Co Ltd | Uninterruptible power supply system with loaded device, and method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227091A (en) * | 2007-11-26 | 2008-07-23 | 江苏省电力公司苏州供电公司 | Intelligent power utilization system |
| CN101969227A (en) * | 2010-11-15 | 2011-02-09 | 湖南雁能森源电力设备有限公司 | Self-powered automatic switching and closing high-voltage control system |
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