CN104569674B - A kind of control protective unit for detecting single-phase equipment running status - Google Patents
A kind of control protective unit for detecting single-phase equipment running status Download PDFInfo
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- CN104569674B CN104569674B CN201410853489.7A CN201410853489A CN104569674B CN 104569674 B CN104569674 B CN 104569674B CN 201410853489 A CN201410853489 A CN 201410853489A CN 104569674 B CN104569674 B CN 104569674B
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Abstract
The present invention discloses a kind of control protective unit for detecting single-phase equipment running status; include the CLOSE_IND0 inputs and OPEN_IND0 inputs of the operating state signal for receiving single-phase equipment; it is double-width grinding and door with door with door and the 3rd with door, second with door, RS latch, the first NOT gate and the second NOT gate, first with door, the 3rd also to include first with door, second.The present invention in equipment running status decision logic by increasing RS latch; there is the characteristics of keeping output preceding state by RS latch, realize that control protective unit can correctly judge equipment running status and for related logical operation under signal input system abnormal conditions.
Description
Technical field
The present invention relates to electric and electronic technical field, and in particular to a kind of control protection of single-phase equipment running status of detection
Device.
Background technology
Single-phase equipment in AC-HVDC engineering, such as dc circuit breaker, disconnecting link, earthing knife-switch, air switch first and second
Many functions of equipment, its running status and Control protection system are closely related.It is when single-phase equipment running status signal is inputted
When system is abnormal, Control protection system will be caused to judge single-phase equipment running status by accident, cause the abnormal fortune of control protective unit
OK, control protective unit malfunction or tripping are will result directly in when serious, the safe and stable operation of power network is influenceed.Such as direct current transportation work
Cheng Zhong, when the system of protection is to dc circuit breaker, the judged result and inconsistent actual conditions of disconnecting link running status, it will cause
Direct current protecting malfunction or tripping；In control function that alternating current filter is idle, if control system erroneous judgement disconnecting link, earthing knife-switch running status will
Directly result in group's wave filter miscarrying or refuse to throw；In DC control system splitting bus decision logic, if there is disconnecting link operation shape
The situation of state erroneous judgement, it would be possible to cause control system to judge bus splitting, direct current abnormal obliteration by accident.Thus, in any feelings
Under condition, such as signal input system is abnormal, single-phase equipment is medium in moving process, remains to correctly judge single-phase equipment operation
The control protective unit of state proposes higher requirement.
In practical engineering application, for the equipment of breaker, disconnecting link, earthing knife-switch, air switch etc. first and second, input system
System is abnormal to generally comprise single-phase equipment auxiliary contact exception and abnormal two aspects of input circuit.At present, it is existing as shown in Figure 1
Control protection system, its signal to single-phase equipment running status is carried out simply with after non-combined logic judgment, just will determine that knot
Fruit is used in the logical operation of Control protection system.There is problems with this control protective unit：
(1) Control protection system is to the correctness of single-phase equipment running status judged result and the work of signal input system
Situation is directly related.
(2) when single-phase equipment "on" position signal input system is abnormal, it may cause control protective unit erroneous judgement is single-phase to set
Standby and then to cause partial function in Control protection system to exit or unavailable in open position, Control protection system can not be met
The requirement of the current system method of operation.
(3) when single-phase equipment gate-dividing state signal input system is abnormal, it may cause control protective unit erroneous judgement is single-phase to set
Standby and then to cause dysfunction input or unavailable in part in Control protection system in closing position, Control protection system can not
Meet the requirement of the current system method of operation.
(4) under signal input system abnormal conditions, it may result in the single-phase equipment divide-shut brake for delivering to Control protection system
Status information is 1, according to existing decision logic, and Control protection system will be considered that single-phase equipment state is not defined, i.e., single-phase
Equipment is not in closing position also in open position, and now some functions of Control protection system will fail, it is impossible to meet system
Service requirement.
(5) any exception of single-phase equipment auxiliary contact or signal input circuit, may all cause control protective unit to go out
Existing malfunction or tripping.
The content of the invention
It is an object of the invention to overcome a kind of above-mentioned not enough protected there is provided control for detecting single-phase equipment running status to fill
Put.
A kind of control protective unit of the single-phase equipment running status of detection of the present invention, includes for receiving single-phase equipment
Operating state signal CLOSE_IND0 inputs and OPEN_IND0 inputs, including first with door (10), second and door
(20), the 3rd with door (30), RS latch (50) and the first NOT gate (60), first with door (10), second and door (20) and the 3rd
It is double-width grinding and door with door (30), wherein, second has a reverse input end b2 with door (20), and the 3rd has with door (30)
Have a reverse input end c1, first with the input a1 and a2 of door (10) respectively with CLOSE_IND0 inputs and OPEN_
IND0 inputs are connected, and first has two-way with output end a points of door (10), wherein all the way with the second reverse input with door (20)
B2 connections are held, second is connected with the input b1 of door (20) with CLOSE_IND0 inputs, first is another with door (10) output end a
Also it is connected all the way with the 3rd with the reverse input end c1 of door (30), the 3rd is then defeated with OPEN_IND0 with the input c2 of door (30)
Enter end connection, RS latch (50) has input R, input S and an output end Q, second with output end b and the RS lock of door (20)
The input R connections of storage (50), the 3rd is connected with the output end c of door (30) with the input S of RS latch (50), and RS is latched
The output end D of device (50) is connected with the input IN of the first NOT gate (60), and OUT points of the output end of the first NOT gate (60) is two-way,
CLOSE_IND output ends are connected all the way, and another road connects the input h, the output end g of the second NOT gate (70) of the second NOT gate (70)
It is connected with OPEN_IND output ends.
Further, first the 3rd tunnel has also been separated with door (10) output end a, the 3rd tunnel is connected with input signal report extremely
Alert module (40).
Compared with prior art, its advantage is the present invention：
(1) Control protection system to the judged result of single-phase equipment running status information only with the actual division shape of single-phase equipment
State (not including mobile status) and Control protection system working condition itself are related, and the correctness of judged result is not inputted by signal
The influence of system exception situation.
(2) in the case of single-phase equipment state signal input circuit or auxiliary contact exception, control protection system will not be caused
The problem of there is malfunction or tripping because judging single-phase status information of equipment by accident in system.
(3) when any one auxiliary contact or loop are abnormal in single-phase equipment state input system, control protective unit is still
It can ensure that single-phase equipment state judged result is consistent with scene, Control protection system remains to meet system operation requirement.
(4) can the single-phase equipment state signal input system of Real-time and Dynamic Detection working condition, either gate-dividing state believe
Number input system or "on" position signal input system, are reported as long as occurring abnormal conditions Control protection system and can give in time
It is alert.
(5) technology is only used for preventing causing control protective unit erroneous judgement is single-phase to set because signal input system is abnormal
Standby running status and then there is control protective unit malfunction or tripping, be unsatisfactory for the problem of system operation is required, it is impossible to instead of list
Phase equipment running status monitoring arrangement.
Brief description of the drawings
Fig. 1 is that existing control protective unit judges single-phase equipment running status logic chart.
Fig. 2 judges single-phase equipment running status logic chart for the control protective unit after improving.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described with reference to the accompanying drawings and examples, shown
So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
Referring to Fig. 2, a kind of embodiment of the control protective unit of the single-phase equipment running status of detection of the present invention, the reality
The control protective unit of example is applied by increasing RS latch in single-phase equipment running status decision logic, utensil is latched by RS
The characteristics of having holding output preceding state, realizes that control protective unit can correctly judge list under signal input system abnormal conditions
Phase equipment running status are simultaneously used for related logical operation.
The control protective unit of the present embodiment includes the CLOSE_ of the operating state signal for receiving single-phase equipment
IND0 inputs and OPEN_IND0 inputs, including first with door 10, second and door the 20, the 3rd and door 30, RS latch 50 and
First NOT gate 60, first and door 10, second and door 20 and the 3rd and door 30 are double-width grinding and door, wherein, second with door 20
With a reverse input end b2, the 3rd has a reverse input end c1 with door 30, first with the input a1 and a2 of door 10
It is connected respectively with CLOSE_IND0 inputs and OPEN_IND0 inputs, first has two-way with output end a points of door 10, wherein
It is connected all the way with second with the reverse input end b2 of door 20, the second input b1 and CLOSE_IND0 inputs company with door 20
Connect, first is also connected with the output end a of door 10 another road with the 3rd with the reverse input end c1 of door 30, the 3rd with the input of door 30
End c2 then be connected with OPEN_IND0 inputs, and RS latch 50 has input R, input S and an output end Q, and second and door 20
Output end b be connected with the input R of RS latch 50, the 3rd connects with the output end c of door 30 and RS latch 50 input S
Connect, the output end D of RS latch 50 is connected with the input IN of the first NOT gate 60, OUT points of the output end of the first NOT gate (60) is
Two-way, connects CLOSE_IND output ends all the way, and another road connects the input h of the second NOT gate (70), the second NOT gate (70) it is defeated
Go out to hold g to be connected with OPEN_IND output ends.
Further, first the 3rd tunnel has also been separated with the output end a of door 10, the 3rd tunnel is connected with input signal abnormal alarm
Module 40.
According to the annexation of each module in engineering practice and above-mentioned control protective unit, learn that RS latch is true
It is worth table and judged result is as follows：
Table 1：RS latch truth table and judged result
The output end OUT of first NOT gate 60 is used for the division state for showing single-phase equipment, and CLOSE_IND output ends are output as
1 represents single-phase equipment in closing position, and OPEN_IND output ends are output as the single-phase equipment of 1 expression in open position.
Under normal circumstances, i.e. auxiliary contact and secondary circuit is without exception, and single-phase equipment controls protection in closing position
Device deterministic process is as follows：
CLOSE_IND0 inputs are that 1, OPEN_IND0 inputs are 0, first and the input a1 of door 10 is that 1, a2 is 0,
Output end a is 0；Second and the input b1 of door 20 are that 1, b2 is 0, and output end b is 1；3rd be 0 with the input c1 of door 30,
Input c2 is 0, and output end c is 0；The input R of RS latch 50 is that 1, input S is 0, and output end D is 0；Input signal
The input e of abnormal alarm module is that 0, i.e. signal input system are normal, and control protective unit is not alarmed；First NOT gate 60 it is defeated
It is 0 to enter to hold IN, and output end OUT is 1；CLOSE_IND output ends are output as 1, single-phase equipment are represented in closing position, with scene
Single-phase equipment state is consistent；OPEN_IND output ends are output as 0, represent single-phase equipment not in open position.
Under normal circumstances, i.e. auxiliary contact and secondary circuit is without exception, and single-phase equipment controls protection in open position
Device deterministic process is as follows：
CLOSE_IND0 inputs are that 0, OPEN_IND0 inputs are 1, first and the input a1 of door 10 is that 0, a2 is 1,
Output end a is 0；Second and the input b1 of door 20 are that 0, b2 is 0, and output end b is 0；3rd be 0 with the input c1 of door 30,
Input c2 is 1, and output end c is 0；The input R of RS latch 50 is that 0, input S is 1, and output end D is 1；Input signal
The input e of abnormal alarm module is that 0, i.e. signal input system are normal, and control protective unit is not alarmed；First NOT gate 60 it is defeated
It is 1 to enter to hold IN, and output end OUT is 0；CLOSE_IND output ends are output as 0, represent single-phase equipment not in closing position；
OPEN_IND output ends are output as 1, represent single-phase equipment in open position, consistent with live single-phase equipment state.
Single-phase equipment causes control protective unit in closing position, but during because of its auxiliary contact or abnormal secondary circuit
CLOSE_IND0 inputs are 0, and now control protective unit decision logic is as follows：
CLOSE_IND0 inputs are that 0, OPEN_IND0 inputs are 0, first and the input a1 of door 10 is that 0, a2 is 0,
Output end a is 0；Second and the input b1 of door 20 are that 0, b2 is 0, and output end b is 0；3rd be 0 with the input c1 of door 30,
Input c2 is 0, and output end c is 0；The input R of RS latch 50 is that 0, input S is 0, and now RS latch 50 will be kept
Previous output valve is constant, because after single-phase equipment is closed a floodgate, the output end D of RS latch 50 is 0, so when RS latch 50
Output end D is maintained as 0；The input e of input signal abnormal alarm module is that 0, i.e. signal input system are normal, control protection
Device is not alarmed；The input IN of first NOT gate 60 is 0, and output end OUT is 1；CLOSE_IND output ends are output as 1, expression
Single-phase equipment is consistent with live single-phase equipment state in closing position；OPEN_IND output ends are output as 0, represent single-phase set
For not in open position.
Single-phase equipment causes control protective unit to connect in open position, but during because of its auxiliary contact or abnormal secondary circuit
The OPEN_IND0 received is 0, and now to sentence process as follows for control protective unit：
CLOSE_INDO inputs are that 0, OPEN_INDO inputs are 0, first and the input a1 of door 10 is that 0, a2 is 0,
Output end a is 0；Second and the input b1 of door 20 are that 0, b2 is 0, and output end b is 0；3rd be 0 with the input c1 of door 30,
Input c2 is 0, and output end c is 0；The input R of RS latch 50 is that 0, input S is 0, and now RS latch 50 will be kept
Previous output valve is constant, because after single-phase equipment separating brake, and the output end D of RS latch 50 is 1, so when RS latch 50
Output end D is maintained as 1；The input e of input signal abnormal alarm module is that 0, i.e. signal input system are normal, control protection
Device is not alarmed；The input IN of first NOT gate 60 is 1, and output end OUT is 0；CLOSE_IND output ends are output as 0, expression
Single-phase equipment is not in closing position；OPEN_IND output ends are output as 1, single-phase equipment are represented in open position, with scene list
Phase equipment state is consistent.
Single-phase equipment causes control in open position or closing position, but during because of its auxiliary contact or abnormal secondary circuit
The CLOSE_IND0 that protection device is received is that 1, OPEN_IND0 is 1, and now control protective unit judges that single-phase equipment state refers to
The logic shown is as follows：
CLOSE_IND0 inputs are that 1, OPEN_IND0 inputs are 1, first and the input a1 of door 10 is that 1, a2 is 1,
Output end a is 1；Second and the input b1 of door 20 are that 1, b2 is 1, and output end b is 0；3rd be 1 with the input c1 of door 30,
Input c2 is 1, and output end c is 0；The input R of RS latch 50 is that 0, input S is 0, and now RS latch 50 will be kept
Previous output valve is constant, if now once single-phase equipment is in closing position, the output end D of RS latch 50 is 0, input letter
The input e of number abnormal alarm module is 1, i.e. signal input circuit system, control protective unit alarm；First NOT gate 60 it is defeated
It is 0 to enter to hold IN, and output end OUT is 1；CLOSE_IND output ends are output as 1, single-phase equipment are represented in closing position, with scene
Single-phase equipment state is consistent；OPEN_IND output ends are output as 0, represent single-phase equipment not in open position.
Above-described embodiment only not limits technical scheme described in the invention to illustrate the present invention；Therefore, although
This specification is with reference to each above-mentioned embodiment to present invention has been detailed description, still, the ordinary skill of this area
Personnel should be appreciated that still can modify or equivalent substitution to the present invention；And all do not depart from the present invention spirit and
The technical scheme of scope and its improvement, it all should cover among scope of the presently claimed invention.
Claims (2)
1. a kind of control protective unit for detecting single-phase equipment running status, includes the running status for receiving single-phase equipment
The CLOSE_IND0 inputs and OPEN_IND0 inputs of signal, it is characterised in that：Including first and door (10), second and door
(20), the 3rd with door (30), RS latch (50), the first NOT gate (60) and the second NOT gate (70), first with door (10), second and
Door (20) and the 3rd with door (30) is double-width grinding and door, wherein, second with door (20) with a reverse input end b2, the
Three have a reverse input end c1 with door (30), and first inputs with CLOSE_IND0 respectively with the input a1 and a2 of door (10)
End and the connection of OPEN_IND0 inputs, first has two-way with output end a points of door (10), wherein all the way with second and door (20)
Reverse input end b2 connections, second is connected with the input b1 of door (20) with CLOSE_IND0 inputs, first with door (10)
Output end a another road is also connected with the 3rd with the reverse input end c1 of door (30), the 3rd with the input c2 of door (30) then with
OPEN_IND0 inputs are connected, and RS latch (50) has input R, input S and an output end Q, and second is defeated with door (20)
Go out to hold b and the input R of RS latch (50) to be connected, the 3rd with the output end c of door (30) and RS latch (50) input S
Connection, the output end D of RS latch (50) is connected with the input IN of the first NOT gate (60), the output end of the first NOT gate (60)
OUT points are two-way, and CLOSE_IND output ends are connected all the way, and another road connects the input h of the second NOT gate (70), the second NOT gate
(70) output end g is connected with OPEN_IND output ends.
2. the control protective unit of the single-phase equipment running status of detection according to claim 1, it is characterised in that：First with
Door (10) output end a has also separated the 3rd tunnel, and the 3rd tunnel is connected with input signal abnormal alarm module (40).
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| CN201410853489.7A CN104569674B (en) | 2014-12-31 | 2014-12-31 | A kind of control protective unit for detecting single-phase equipment running status |
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| CN104569674B true CN104569674B (en) | 2017-07-21 |
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| CN107918430B (en) * | 2017-12-07 | 2023-07-25 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Direct-current control protection device for realizing on-line maintenance of switching value loop |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270413Y (en) * | 2008-09-11 | 2009-07-08 | 华东电力试验研究院有限公司 | Distance protection apparatus |
| CN101951023A (en) * | 2010-08-04 | 2011-01-19 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Switch locking method of high-voltage direct current convertor station |
| CN201780360U (en) * | 2010-08-20 | 2011-03-30 | 镇江华东电力设备制造厂 | Operation loop testing circuit for electric power protecting equipment |
| CN202026071U (en) * | 2011-04-02 | 2011-11-02 | 刘志学 | Circuit breaker malfunction protective system with automatic reclosing function |
| CN102694366A (en) * | 2011-03-24 | 2012-09-26 | 辽宁省电力有限公司朝阳供电公司 | Remote monitoring apparatus for disconnection of replaying protection outlet tripping circuit |
| CN204439739U (en) * | 2014-12-31 | 2015-07-01 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of control protective unit detecting single-phase equipment running status |
-
2014
- 2014-12-31 CN CN201410853489.7A patent/CN104569674B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270413Y (en) * | 2008-09-11 | 2009-07-08 | 华东电力试验研究院有限公司 | Distance protection apparatus |
| CN101951023A (en) * | 2010-08-04 | 2011-01-19 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Switch locking method of high-voltage direct current convertor station |
| CN201780360U (en) * | 2010-08-20 | 2011-03-30 | 镇江华东电力设备制造厂 | Operation loop testing circuit for electric power protecting equipment |
| CN102694366A (en) * | 2011-03-24 | 2012-09-26 | 辽宁省电力有限公司朝阳供电公司 | Remote monitoring apparatus for disconnection of replaying protection outlet tripping circuit |
| CN202026071U (en) * | 2011-04-02 | 2011-11-02 | 刘志学 | Circuit breaker malfunction protective system with automatic reclosing function |
| CN204439739U (en) * | 2014-12-31 | 2015-07-01 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of control protective unit detecting single-phase equipment running status |
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