CN204928123U - Intelligent substation merging cells voltage automatic switch -over control circuit - Google Patents
Intelligent substation merging cells voltage automatic switch -over control circuit Download PDFInfo
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- CN204928123U CN204928123U CN201520589775.7U CN201520589775U CN204928123U CN 204928123 U CN204928123 U CN 204928123U CN 201520589775 U CN201520589775 U CN 201520589775U CN 204928123 U CN204928123 U CN 204928123U
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Abstract
The utility model discloses an intelligent substation merging cells voltage automatic switch -over control circuit, including I female merging cells voltage automatic switch -over control circuit and II female merging cells voltage automatic switch -over control circuit, I female merging cells voltage automatic switch -over control circuit includes first dual input disjunction gate H1, second three -input disjunction gate H2, first dual input AND gate Y1, the two or four input AND gate Y2, third dual input AND gate Y3, II female merging cells voltage automatic switch -over control circuit include third dual input disjunction gate H3, fourth three -input disjunction gate H4, fourth dual input AND gate Y4, the may 4th input AND gate Y5 and the 6th dual input AND gate Y6, the utility model discloses the work logic that further perfect intelligent substation merging cells voltage switches effectively improves security and degree of automation that intelligent substation voltage switches, reduces the influence that busbar potential transformer and voltage merging cells trouble caused to transformer substation's steady operation.
Description
Technical field
The utility model relates to intelligent transformer substation voltage secondary parallel technical field, particularly relates to a kind of Intelligent substation merging unit voltage automatic switching control circuit.
Background technology
Along with the quick propelling that China's intelligent grid is built, intelligent substation and the intelligent key link as electrical network intelligent construction of power transformation, just with surprising speed high speed development, its quantity is increasing fast, electric pressure improves constantly, and the status in China's electrical network is just in fast lifting.The reasonability of intelligent substation engineering construction, science, fail safe, not only affect the safe operation of transformer station self, also can make a big impact to electricity net safety stable.
At present, the busbar voltage merge cells (hereinafter referred to as voltage merge cells) of 220Kv double bus scheme intelligent substation mainly adopts the allocation plan shown in Fig. 1, and wherein voltage transformer is called for short PT.When a wherein voltage merge cells fault, another voltage merge cells exports busbar voltage, realize voltage side by side and switch, the normal work of full station same process layer network intelligent assembly can not be affected, and also without the need to having a power failure on a large scale when carrying out the replacing of voltage merge cells or troubleshooting.But the program is when carrying out manual voltage's parallel operation, because operand is various, cause processing safety not high, and very possible because operation causes voltage action delay arranged side by side not in time, affect the stable operation of transformer station.
Utility model content
The purpose of this utility model is to provide a kind of Intelligent substation merging unit voltage automatic switching control circuit, automatic Synchronization and the switching of merge cells voltage can be realized, improve fail safe and the automaticity of intelligent transformer substation voltage switching, the impact that reduction bus-bar potential transformer and voltage merge cells fault thereof cause transformer station's stable operation.
For achieving the above object, the technical solution adopted in the utility model is:
Intelligent substation merging unit voltage automatic switching control circuit, comprise I female merge cells voltage automatic switching control circuit and II female merge cells voltage automatic switching control circuit, I female merge cells voltage automatic switching control circuit comprises the first dual input or door H1, two or three input or door H2, first dual input and door Y1, two or four input and door Y2, 3rd dual input and door Y3, II female PT disconnecting link divides a signal A21 to be connected first input end and second input of the first dual input or door H1 respectively with II female voltage data invalid signals A11, the output of the first dual input or door H1 connects the first input end of the first dual input and door Y1, bus connection switch co-bit signal C1 connects second input of the first dual input and door Y1, first dual input is connected the two or four and inputs the first input end with door Y2 with the output of door Y1, I female voltage data useful signal B11, II female disconnecting link co-bit signal A3, I female PT disconnecting link co-bit signal B21 connects second input of the two or four input and door Y2 respectively, 3rd input and four-input terminal, two or four input to be connected the two or three and to input or the first input end of door H2 with the output of door Y2, I female PT disconnecting link co-bit signal B21 and I female disconnecting link co-bit signal B3 are connected first input end and second input of the 3rd dual input and door Y3 respectively, 3rd dual input is connected the two or three and inputs or second input of door H2 with the output of door Y3, artificial pressure exports the 3rd input that I female voltage signal D1 connects the two or three input or door H2, II female merge cells voltage automatic switching control circuit comprises the 3rd dual input or door H3, four or three input or door H4, 4th dual input and door Y4, the May 4th input and door Y5 and the 6th dual input and door Y6, I female PT disconnecting link divides a signal B22 to be connected first input end and second input of the 3rd dual input or door H3 respectively with I female voltage data invalid signals B12, the output of the 3rd dual input or door H3 connects the first input end of the 4th dual input and door Y4, bus connection switch co-bit signal C1 connects second input of the 4th dual input and door Y4, 4th dual input is connected the May 4th and inputs the first input end with door Y5 with the output of door Y4, II female voltage data useful signal A12, I female disconnecting link co-bit signal B3, II female PT disconnecting link co-bit signal A22 connects second input of the May 4th input and door Y5 respectively, 3rd input and four-input terminal, the May 4th input to be connected the four or three and to input or the first input end of door H4 with the output of door Y5, II female PT disconnecting link co-bit signal A22 and II female disconnecting link co-bit signal A3 are connected first input end and second input of the 6th dual input and door Y6 respectively, 6th dual input is connected the four or three and inputs or second input of door H4 with the output of door Y6, artificial pressure exports the 3rd input that II female voltage signal D2 connects the four or three input or door H4.
The utility model is in voltage automatic Synchronization switch logic, introduce and run the validity that interval different bus section, busbar section bus-bar potential transformer voltage merge cells exports data, as the condition judging voltage locking arranged side by side, can prevent from, because staff neglects by intelligent substation switch between components to false voltage merge cells, improving the fail safe of intelligent transformer substation voltage parallel operation;
The utility model is in voltage automatic Synchronization switch logic, introduce and run the validity that interval same bus section, busbar section bus-bar potential transformer voltage merge cells exports data, as the condition judging voltage action arranged side by side, when can be implemented in operation interval same bus section, busbar section bus-bar potential transformer voltage merge cells catastrophic failure, by entirely standing, all intelligent assembly secondary voltages run with this bus automatically switch on fault-free bus-bar potential transformer, guarantee to occur due to voltage merge cells fault cause can only component operation abnormal, improve intelligent substation reliability of operation.
Accompanying drawing explanation
Fig. 1 is the allocation plan schematic diagram of 220Kv double bus scheme voltage merge cells;
Fig. 2 is the utility model I female merge cells voltage automatic switching control circuit figure;
Fig. 3 is the utility model II female merge cells voltage automatic switching control circuit figure.
Embodiment
As shown in Figure 2 to Figure 3, the Intelligent substation merging unit voltage automatic switching control circuit that the utility model provides, comprise I female merge cells voltage automatic switching control circuit and II female merge cells voltage automatic switching control circuit, I female voltage automatic Synchronization control circuit comprises the first dual input or door H1, two or three input or door H2, first dual input and door Y1, two or four input and door Y2, 3rd dual input and door Y3, II female PT disconnecting link divides a signal A21 to be connected first input end and second input of the first dual input or door H1 respectively with II female voltage data invalid signals A11, the output of the first dual input or door H1 connects the first input end of the first dual input and door Y1, bus connection switch co-bit signal C1 connects second input of the first dual input and door Y1, first dual input is connected the two or four and inputs the first input end with door Y2 with the output of door Y1, I female voltage data useful signal B11, II female disconnecting link co-bit signal A3, I female PT disconnecting link co-bit signal B21 connects second input of the two or four input and door Y2 respectively, 3rd input and four-input terminal, two or four input to be connected the two or three and to input or the first input end of door H2 with the output of door Y2, I female PT disconnecting link co-bit signal B21 and I female disconnecting link co-bit signal B3 are connected first input end and second input of the 3rd dual input and door Y3 respectively, 3rd dual input is connected the two or three and inputs or second input of door H2 with the output of door Y3, artificial pressure exports the 3rd input that I female voltage signal D1 connects the two or three input or door H2, the output signal of the two or three input or door H2 is the female voltage OUT1 of output I.
II female voltage automatic switching control circuit comprises the 3rd dual input or door H3, four or three input or door H4, 4th dual input and door Y4, the May 4th input and door Y5 and the 6th dual input and door Y6, I female PT disconnecting link divides a signal B22 to be connected first input end and second input of the 3rd dual input or door H3 respectively with I female voltage data invalid signals B12, the output of the 3rd dual input or door H3 connects the first input end of the 4th dual input and door Y4, bus connection switch co-bit signal C1 connects second input of the 4th dual input and door Y4, 4th dual input is connected the May 4th and inputs the first input end with door Y5 with the output of door Y4, II female voltage data useful signal A12, I female disconnecting link co-bit signal B3, II female PT disconnecting link co-bit signal A22 connects second input of the May 4th input and door Y5 respectively, 3rd input and four-input terminal, the May 4th input to be connected the four or three and to input or the first input end of door H4 with the output of door Y5, II female PT disconnecting link co-bit signal A22 and II female disconnecting link co-bit signal A3 are connected first input end and second input of the 6th dual input and door Y6 respectively, 6th dual input is connected the four or three and inputs or second input of door H4 with the output of door Y6, artificial pressure exports the 3rd input that II female voltage signal D2 connects the four or three input or door H4, the output signal of the four or three input or door H4 is the female voltage OUT2 of output II.
I female merge cells voltage automatic switching control circuit of the present utility model achieves and controls merge cells and export the function of I female voltage, when there is any one in following three kinds of situations in interval, i.e. and the female voltage signal OUT1 of generation output I.
Situation 1: the first dual input or door H1, first dual input and door Y1 and the two or four input and together constitute with door Y2 the control logic that I female merge cells voltage automatic Synchronization switches, in the two or four input with the input signal of door Y2, before I female PT disconnecting link co-bit signal B21 and I female voltage data useful signal B11 can complete the switching of voltage automatic Synchronization, to the judgement of I bus-bar potential transformer actual operating state and I female voltage transformer voltage merge cells operation conditions, namely only at I bus-bar potential transformer really in the state of putting into operation, and just allow the action of voltage automatic Synchronization when I female voltage transformer voltage merge cells normal operation, prevent carelessness due to staff by intelligent substation switch between components to false voltage merge cells, be conducive to the fail safe improving intelligent transformer substation voltage parallel operation, II female disconnecting link co-bit signal A3 is then the judgement to this interval operational mode, namely just likely needs the female voltage of output I when this interval runs on II bus, realizes voltage automatic Synchronization and switching,
The judged result of the first dual input and door Y1 is added in the input signal of the two or four input and door Y2, first voltage automatic Synchronization whether can be allowed to make basic judgement to bus running manner, namely need just to allow the action of voltage automatic Synchronization when guaranteeing that I bus and II bus are in paired running; The voltage automatic Synchronization that secondly can solve in two kinds of situations that the first dual input or door H1 represent switches: the first situation be this interval run on II bus but II female PT disconnecting link in a point position, namely II bus-bar potential transformer is stopped transport, then need the female voltage of output I, realize voltage automatic Synchronization to switch, can ensure like this to realize voltage automatic Synchronization when II bus-bar potential transformer manual operation is stopped transport; The second situation is that this interval runs on II bus but II female voltage data is invalid, i.e. II female voltage transformer voltage merge cells fault, I female voltage need be exported, realize voltage automatic Synchronization to switch, like this can when the normal II female voltage transformer voltage merge cells catastrophic failure run, all intelligent assembly secondary voltages station entirely being run on this bus switch on fault-free bus-bar potential transformer, guarantee the intelligent assembly operation irregularity that can not occur because voltage merge cells fault causes.
First input end and second input of situation 2: the three dual input and door Y3 are connected this interval I bus bar side disconnecting link co-bit signal B3 and I female PT disconnecting link co-bit signal B21 respectively, namely guarantee under I bus-bar potential transformer puts into operation state, just allow this interval merge cells to export I female voltage, otherwise keep original output state, when can prevent this interval I bus bar side disconnecting link stroke defect like this, intelligent assembly secondary voltage is switched to I bus section, busbar section of voltage transformer shut down condition, the situation causing voltage circuit to break occurs.
Situation 3: manual hand manipulation forces the female voltage of output I, can meet the needs of in particular cases on-the-spot manual operation and debugging voltage circuit.
The operation principle of the utility model II female merge cells voltage automatic switching control circuit is similar to I female merge cells voltage automatic switching control circuit, can realize controlling the function that merge cells exports II female voltage, when there is any one in following three kinds of situations in interval, i.e. the female voltage signal OUT2 of generation output II.
Situation 1: the three dual input or door H3, 4th dual input and door Y4 and the May 4th input the control logic together constituting II female merge cells voltage automatic Synchronization with door Y5 and switch, in the May 4th input with the input signal of door Y5, before II female PT disconnecting link co-bit signal A22 and II female voltage data useful signal A12 can complete the switching of voltage automatic Synchronization, to the judgement of II bus-bar potential transformer actual operating state and II female voltage transformer voltage merge cells operation conditions, namely only at II bus-bar potential transformer really in the state of putting into operation, and just allow the action of voltage automatic Synchronization when II female voltage transformer voltage merge cells normal operation, prevent carelessness due to staff by intelligent substation switch between components to false voltage merge cells, be conducive to the fail safe improving intelligent transformer substation voltage parallel operation, I female disconnecting link co-bit signal B3 is then the judgement to this interval operational mode, namely just likely needs the female voltage of output II when this interval runs on I bus, realizes automatic Synchronization and the switching of voltage,
The judged result of the 4th dual input and door Y4 is added in the input signal of the May 4th input and door Y5, first voltage automatic Synchronization whether can be allowed to make basic judgement to bus running manner, namely need just to allow the action of voltage automatic Synchronization when guaranteeing that I bus and II bus are in paired running; The voltage automatic Synchronization that secondly can solve in two kinds of situations that the 3rd dual input or door H3 represent switches: the first situation be this interval run on I bus but I female PT disconnecting link in a point position, namely I bus-bar potential transformer is stopped transport, then need the female voltage of output II, realize voltage automatic Synchronization to switch, can ensure like this to realize voltage automatic Synchronization when I bus-bar potential transformer manual operation is stopped transport; The second situation is that this interval runs on I bus but I female voltage data is invalid, i.e. I female voltage transformer voltage merge cells fault, II female voltage need be exported, realize voltage automatic Synchronization to switch, like this can when the normal I female voltage transformer voltage merge cells catastrophic failure run, all intelligent assembly secondary voltages station entirely being run on this bus switch on fault-free bus-bar potential transformer, guarantee the intelligent assembly operation irregularity that can not occur because voltage merge cells fault causes.
First input end and second input of situation 2: the six dual input and door Y6 are connected this interval II bus bar side disconnecting link co-bit signal A3 and II female PT disconnecting link co-bit signal A22 respectively, namely guarantee under II bus-bar potential transformer puts into operation state, just allow this interval merge cells to export II female voltage, otherwise keep original output state, when can prevent this interval II bus bar side disconnecting link stroke defect like this, intelligent assembly secondary voltage is switched to II bus section, busbar section of voltage transformer shut down condition, the situation causing voltage circuit to break occurs.
Situation 3: manual hand manipulation forces the female voltage of output II, can meet the needs of in particular cases on-the-spot manual operation and debugging voltage circuit.
The work-based logic of the utility model is perfect further Intelligent substation merging unit voltage switching, solve the problem that manual operation voltage depends on telemechanical communication side by side unduly, the fail safe that effective raising intelligent transformer substation voltage switches and automaticity, the impact that reduction bus-bar potential transformer and voltage merge cells fault thereof cause transformer station's stable operation.
Claims (1)
1. Intelligent substation merging unit voltage automatic switching control circuit, it is characterized in that: comprise I female merge cells voltage automatic switching control circuit and II female merge cells voltage automatic switching control circuit, I female merge cells voltage automatic switching control circuit comprises the first dual input or door H1, two or three input or door H2, first dual input and door Y1, two or four input and door Y2, 3rd dual input and door Y3, II female PT disconnecting link divides a signal A21 to be connected first input end and second input of the first dual input or door H1 respectively with II female voltage data invalid signals A11, the output of the first dual input or door H1 connects the first input end of the first dual input and door Y1, bus connection switch co-bit signal C1 connects second input of the first dual input and door Y1, first dual input is connected the two or four and inputs the first input end with door Y2 with the output of door Y1, I female voltage data useful signal B11, II female disconnecting link co-bit signal A3, I female PT disconnecting link co-bit signal B21 connects second input of the two or four input and door Y2 respectively, 3rd input and four-input terminal, two or four input to be connected the two or three and to input or the first input end of door H2 with the output of door Y2, I female PT disconnecting link co-bit signal B21 and I female disconnecting link co-bit signal B3 are connected first input end and second input of the 3rd dual input and door Y3 respectively, 3rd dual input is connected the two or three and inputs or second input of door H2 with the output of door Y3, artificial pressure exports the 3rd input that I female voltage signal D1 connects the two or three input or door H2, II female merge cells voltage automatic switching control circuit comprises the 3rd dual input or door H3, four or three input or door H4, 4th dual input and door Y4, the May 4th input and door Y5 and the 6th dual input and door Y6, I female PT disconnecting link divides a signal B22 to be connected first input end and second input of the 3rd dual input or door H3 respectively with I female voltage data invalid signals B12, the output of the 3rd dual input or door H3 connects the first input end of the 4th dual input and door Y4, bus connection switch co-bit signal C1 connects second input of the 4th dual input and door Y4, 4th dual input is connected the May 4th and inputs the first input end with door Y5 with the output of door Y4, II female voltage data useful signal A12, I female disconnecting link co-bit signal B3, II female PT disconnecting link co-bit signal A22 connects second input of the May 4th input and door Y5 respectively, 3rd input and four-input terminal, the May 4th input to be connected the four or three and to input or the first input end of door H4 with the output of door Y5, II female PT disconnecting link co-bit signal A22 and II female disconnecting link co-bit signal A3 are connected first input end and second input of the 6th dual input and door Y6 respectively, 6th dual input is connected the four or three and inputs or second input of door H4 with the output of door Y6, artificial pressure exports the 3rd input that II female voltage signal D2 connects the four or three input or door H4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520589775.7U CN204928123U (en) | 2015-08-07 | 2015-08-07 | Intelligent substation merging cells voltage automatic switch -over control circuit |
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| CN201520589775.7U CN204928123U (en) | 2015-08-07 | 2015-08-07 | Intelligent substation merging cells voltage automatic switch -over control circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071383A (en) * | 2015-08-07 | 2015-11-18 | 国家电网公司 | Automatic voltage switching control circuit for merging unit of intelligent substation |
| CN105515166A (en) * | 2016-01-19 | 2016-04-20 | 国网福建省电力有限公司泉州供电公司 | Voltage configuration scheme for switchable maintenance of busbar merging unit of double-busbar connection mode 110kV system of intelligent substation |
| CN105655880A (en) * | 2016-01-19 | 2016-06-08 | 国网福建省电力有限公司泉州供电公司 | Voltage load balanced distribution configuration mode of 110 kV system buses in intelligent substation double-bus wiring mode |
-
2015
- 2015-08-07 CN CN201520589775.7U patent/CN204928123U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071383A (en) * | 2015-08-07 | 2015-11-18 | 国家电网公司 | Automatic voltage switching control circuit for merging unit of intelligent substation |
| CN105071383B (en) * | 2015-08-07 | 2018-02-09 | 国家电网公司 | Intelligent substation merging unit voltage automatic switching control circuit |
| CN105515166A (en) * | 2016-01-19 | 2016-04-20 | 国网福建省电力有限公司泉州供电公司 | Voltage configuration scheme for switchable maintenance of busbar merging unit of double-busbar connection mode 110kV system of intelligent substation |
| CN105655880A (en) * | 2016-01-19 | 2016-06-08 | 国网福建省电力有限公司泉州供电公司 | Voltage load balanced distribution configuration mode of 110 kV system buses in intelligent substation double-bus wiring mode |
| CN105655880B (en) * | 2016-01-19 | 2018-06-19 | 国网福建省电力有限公司泉州供电公司 | The configuration mode of 110 kilovolts of system busbar voltage load equiblibrium mass distributions of intelligent substation double bus scheme mode |
| CN105515166B (en) * | 2016-01-19 | 2018-07-24 | 国网福建省电力有限公司泉州供电公司 | 110 kilovolts of system busbar combining units of intelligent substation double bus scheme mode can back brake maintenance voltage allocation plan |
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Granted publication date: 20151230 Effective date of abandoning: 20180209 |
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