CN105703476A - Emergency power supply automatic switch-in device - Google Patents

Emergency power supply automatic switch-in device Download PDF

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Publication number
CN105703476A
CN105703476A CN201610215418.3A CN201610215418A CN105703476A CN 105703476 A CN105703476 A CN 105703476A CN 201610215418 A CN201610215418 A CN 201610215418A CN 105703476 A CN105703476 A CN 105703476A
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CN
China
Prior art keywords
signal
time
door
power supply
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610215418.3A
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Chinese (zh)
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CN105703476B (en
Inventor
王鹏
张洪铭
胡孜涵
唐楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201610215418.3A priority Critical patent/CN105703476B/en
Publication of CN105703476A publication Critical patent/CN105703476A/en
Application granted granted Critical
Publication of CN105703476B publication Critical patent/CN105703476B/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Keying Circuit Devices (AREA)

Abstract

The invention discloses an emergency power supply automatic switch-in device, which relates to the technical field of electricity grids. By means of introducing a pair of input quantities reflecting position of a 1DL circuit breaker, a failed-to-act phenomenon of the automatic switch-in device is solved; by means of introducing a second group of voltage, a misoperation phenomenon of the automatic switch-in device is solved; structure is simple, adding a set of emergency power supply switch-in device in addition is avoided, doubling functions are realized on one set of emergency power supply automatic switch-in device, problems of misoperation and failed-to-act phenomenon of the emergency power supply switch-in device are solved effectively, time and labor are saved, and working efficiency is improved.

Description

A kind of automatic throw-in equipment of emergency power supply
Technical field
The present invention relates to electric power network alternate power technologies field。
Background technology
Electrical network adopts relatively broadly single channel power supply power, when power failure can not normal power supply time, automatically switch to the mode that another road stand-by power supply powers and be called automatic throw-in equipment of emergency power supply。
The problem that automatic closing feeding device present stage is primarily present is: automatic bus judges the non-tripping of chopper, and therefore standby power throw-in device causes tripping；If voltage secondary circuit is abnormal causes that voltage transformer secondary loses voltage, then automatic throw-in equipment of emergency power supply judges inlet wire decompression, and then causes automatic throw-in equipment of emergency power supply misoperation。
The tripping of automatic throw-in equipment of emergency power supply and malfunction all can affect the normal use of device, affect work efficiency, wasting manpower and material resources。
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, a kind of automatic throw-in equipment of emergency power supply is provided, simple in construction, additionally do not increase a set of standby power throw-in device, a set of automatic throw-in equipment of emergency power supply realizes the function of dual, effectively solve malfunction and the tripping problem of standby power throw-in device, time saving and energy saving, improve work efficiency。
For solving above-mentioned technical problem, the technical solution used in the present invention is: first has 5 inputs and an outfan with door, signal, the second circuit breaker position signal 2DL-TWL, the 3rd circuit breaker position signal 3DL-TWL and the signal of the second not gate, No. 1 bus voltage signal U that input respectively the first circuit breaker position signal 1DL-TWL and the first not gate connect1With No. 2 bus voltage signal U2, outfan and the first time-delay mechanism are connected；The second electric current I having 3 inputs to be No. 1 inlet wire with doorISignal, voltage UISignal and voltage UIISignal, second be connected with gate output terminal the 3rd with door input；3rd has one outfan of 2 inputs with door, and input is that the first deferred mount output signal and second and door export signal, and outfan connects the second time-delay mechanism input；The output signal of the second time-delay mechanism connect respectively the 3rd broadening time-delay mechanism input and the 4th with door input；3rd broadening time-delay mechanism outfan connects breaking coil 1TJ respectively and tripping operation drives signal 1xj；The 4th output signal having 2 inputs to be the second time-delay mechanism with door and first or door output signal, the 4th is connected the 4th broadening time-delay mechanism with gate output terminal；4th broadening time-delay mechanism outfan connects closing coil 2HJ respectively and closing coil drives signal 2xj；First or signals that the input of door is two reflection the first chopper 1DL positions, respectively the first circuit breaker position signal 1DL-TWL and the first circuit breaker position signal 1DL-HWL different for circuit breaker position signal 1DL-TWL from first；Second or the input of door be block signal BS, second or gate output terminal connect the first time-delay mechanism。
As preferably, first time-delay mechanism time delay was the 10-20 second。
As preferably, voltage UIISignal is second group of voltage circle voltage of No. 1 primary voltage transformer。
As preferably, voltage UIISignal is in Bulk Supply Substation, the secondary voltage of low-pressure side。
As preferably, the first circuit breaker position signal 1DL-HWL is the contact contrary with the first chopper 1DL contact in the first circuit breaker position signal 1DL-TWL。
As preferably, the first circuit breaker position signal 1DL-HWL is one group of tripping position relay contact different in breaker operation cabinet and the first circuit breaker position signal 1DL-TWL。
As preferably, the first circuit breaker position signal 1DL-HWL is a combination gate position relay contact different in breaker operation cabinet and the first circuit breaker position signal 1DL-TWL。
As preferably, the 3rd broadening time-delay mechanism time was set as 200 milliseconds。
As preferably, the 4th broadening time-delay mechanism time was set as 200 milliseconds。
Adopt and have the beneficial effects that produced by technique scheme: present configuration is simple, additionally do not increase a set of standby power throw-in device, the first chopper 1DL position quantity signal is reflected by increasing by one group of voltage and increase by a group, a set of automatic throw-in equipment of emergency power supply realizes the function of dual, effectively solve malfunction and the tripping problem of standby power throw-in device, time saving and energy saving, improve work efficiency。
Accompanying drawing explanation
Fig. 1 is automatic throw-in equipment of emergency power supply schematic diagram；
Fig. 2 is the logic diagram of the automatic throw-in equipment of emergency power supply of prior art；
Fig. 3 is the logic diagram of one embodiment of the invention。
In figure: 1, first and door；2, second and door；3, the 3rd and door；4, the 4th and door；5, the first not gate；6, the second not gate；7, the first time-delay mechanism；8, the second time-delay mechanism；9, the 3rd broadening time-delay mechanism；10, the 4th broadening time-delay mechanism；11, first or door；12, second or door。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation。
As shown in Figure 1, for a kind of automatic throw-in equipment of emergency power supply schematic diagram, No. 1 inlet wire of automatic throw-in equipment of emergency power supply and the first chopper 1DL are connected, No. 2 inlet wires and the second chopper 2DL are connected, it is connected by the 3rd chopper 3DL between first chopper 1DL and the second chopper 2DL, voltage transformer UX1It is connected with the first chopper 1DL input, voltage transformer UX2It is connected with the second chopper 2DL input, between the first chopper 1DL and the three chopper 3DL, is provided with No. 1 transformator, between the second chopper 2DL and the three chopper 3DL, be provided with No. 2 transformators。
Under normal mode, No. 1 inlet wire runs, and No. 2 inlet wires are standby, and namely 1DL, 3DL are closing position, and 2DL is in a point position。When No. 1 inlet wire dead electricity of working line, or 1DL switchs after jump, and automatic throw-in equipment first ensures that working line disconnects, and then No. 2 inlet wire stand-by power supplies should be able to automatically engage, and only permission action is once。
As shown in Figure 2, standby power throw-in device logic diagram before not improving for the present invention, analyze original standby power throw-in device, No. 1 inlet wire runs, No. 2 inlet wires are standby, input element introduces 1DL, 2DL circuit breaker position signal, introduces No. 1 inlet wire current signal, has tripping 1DL circuit breaker trip coil and the closing coil of the 2DL chopper that closes respectively in output element。
During work, judge that No. 1 inlet wire of working line whether dead electricity or 1DL switch whether jump with No. 1 bus-bar potential transformer secondary voltage。When after No. 1 busbar voltage dead electricity, and No. 1 inlet wire secondary current is lower than there being stream locking value, then be judged as losing power supply。Now automatic switching device of standby power supply sends a tripping operation and makes tripping 1DL switch, and when acknowledging receipt of after 1DL circuit breaker position contact disconnects and represent that switch disconnects, automatic switching device of standby power supply closes 2DL switch through too short time delay the 4th time-delay mechanism。Automatic switching device of standby power supply action success, stand-by power supply successfully puts into。
Automatic switching device of standby power supply introduces No. 1 inlet wire current, is because automatic switching device of standby power supply and judges power supply whether dead electricity by the secondary voltage of No. 1 bus-bar potential transformer。And voltage transformer secondary voltage is often over low-voltage air switch access device, if air switch wrong diagnosis is left or voltage circuit secondary is abnormal is likely to cause standby power throw-in device misoperation。And when No. 1 inlet wire is properly functioning, No. 1 inlet wire current exists, if inlet wire secondary current exists, secondary voltage disappears, then standby power throw-in device locking, it is believed that TV Secondary Wire Abnormity, and then standby power throw-in device is failure to actuate。
By analysis, the reason that original stand-by power supply exists malfunction and tripping just as device is: tripping reason, when No. 1 inlet wire dead electricity, standby power throw-in device sends jumping order, after tripping 1DL switch, because switch changeover contact loose contact or change and not in place cause that the first chopper 1DL tripping position relay contact is disconnected。Therefore automatic bus judges the non-tripping of 1DL, and therefore locking standby power throw-in device causes tripping。Reason of false action, when light load, 1DL real work electric current has stream latching current value less than what automatic throw-in equipment of emergency power supply was adjusted, if now voltage secondary circuit is abnormal causes that voltage transformer secondary loses voltage, then automatic throw-in equipment of emergency power supply judges inlet wire decompression and then causes automatic throw-in equipment of emergency power supply misoperation。
As shown in Figure 3, for one automatic throw-in equipment of emergency power supply logic diagram of the present invention, run with No. 1 inlet wire, No. 2 inlet wires are standby for example, first has 5 inputs and an outfan with door 1, signal, the second circuit breaker position signal 2DL-TWL, the 3rd circuit breaker position signal 3DL-TWL and the signal of the second not gate 6, No. 1 bus voltage signal U that input respectively the first circuit breaker position signal 1DL-TWL and the first not gate 5 connect1With No. 2 bus voltage signal U2, outfan and the first time-delay mechanism 7 are connected；The second electric current I having 3 inputs to be No. 1 inlet wire with door 2ISignal, voltage UISignal and voltage UIISignal, second be connected with door 2 outfan the 3rd with door 3 input, the signal of two groups of voltages be with relation, namely after only two groups of voltages all lose and after having stream latch open, standby power throw-in device just can judge to lose power supply and then standby power throw-in device correct operation, because Secondary Circuit of Potential Transformer two groups occurs abnormal probability relatively low, and has remained in that stream blocking function simultaneously, it is possible to effectively solve standby power throw-in device malfunction problem under light loading condiction；3rd has one outfan of 2 inputs with door 3, and input is that the first deferred mount 7 exports signal and second and door 2 and exports signal, and outfan connects the second time-delay mechanism input 8；The output signal of the second time-delay mechanism 8 connect respectively the 3rd broadening time-delay mechanism 9 input and the 4th with door 4 input；3rd broadening time-delay mechanism 9 outfan connects breaking coil 1TJ respectively and tripping operation drives signal 1xj；The 4th output signal having 2 inputs to be the second time-delay mechanism 8 with door 4 and first or door 11 export signal, the 4th is connected the 4th broadening time-delay mechanism 10 with door 4 outfan；4th broadening time-delay mechanism 10 outfan connects closing coil 2HJ respectively and closing coil drives signal 2xj；First or signals that the input of door 11 is two reflection the first chopper 1DL positions, respectively the first circuit breaker position signal 1DL-TWL and the first circuit breaker position signal 1DL-HWL different for circuit breaker position signal 1DL-TWL from first, the signal input that two groups reflect the first chopper 1DL trip position for or relation, as long as both there being one group of quantitative response the first chopper 1DL to get final product tripping, standby power throw-in device gets final product correct operation；Second or the input of door 12 be block signal BS, second or door 12 outfan connect the first time-delay mechanism 7。
First time-delay mechanism 7 time delay was the 10-20 second, and the first time-delay mechanism 7 is to allow automatic throw-in equipment charge if having time, makes possess the condition carried out downwards。
Voltage UIISignal can be second group of voltage circle voltage of No. 1 primary voltage transformer。
Voltage UIISignal is alternatively in Bulk Supply Substation, the secondary voltage of low-pressure side, and after transformer station high-pressure side loses voltage, wherein, low-pressure side voltage potential must also can reduce。By in, the reduction of low-pressure side voltage can also verify that power supply loses voltage。
First circuit breaker position signal 1DL-HWL is the contact contrary with the first chopper 1DL contact in the first circuit breaker position signal 1DL-TWL。
First circuit breaker position signal 1DL-HWL is one group of tripping position relay contact different in breaker operation cabinet and the first circuit breaker position signal 1DL-TWL。
First circuit breaker position signal 1DL-HWL is a combination gate position relay contact different in breaker operation cabinet and the first circuit breaker position signal 1DL-TWL。
3rd broadening time-delay mechanism time was set as 200 milliseconds。
4th broadening time-delay mechanism time was set as 200 milliseconds。
Work process:
No. 1 inlet wire dead electricity, inlet wire current I1, voltage UIWith voltage UIILess than locking value, voltage UIWith voltage UIIDuring equal dead electricity, standby power throw-in device starts, and sends the tripping operation order of tripping the first chopper after time delay。When the first circuit breaker position signal 1DL-TWL and the first circuit breaker position signal 1DL-HWL has a reflection first chopper 1DL tripping, the closing coil of the second chopper can be driven so that the second breaker closing。
In real work, No. 1 inlet wire and No. 2 inlet wires are standby each other, so can also run by No. 2 inlet wires, No. 1 inlet wire is standby, and its operation principle is run with No. 1 inlet wire, and No. 2 standby principles of inlet wire are identical。
After adopting technique scheme, additionally do not increase a set of standby power throw-in device, the first chopper 1DL position quantity signal is reflected by increasing by one group of voltage and increase by a group, a set of automatic throw-in equipment of emergency power supply realizes the function of dual, effectively solve malfunction and the tripping problem of standby power throw-in device, time saving and energy saving, improve work efficiency。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention。

Claims (9)

1. an automatic throw-in equipment of emergency power supply, it is characterized in that: first has 5 inputs and an outfan with door (1), the input signal that respectively the first circuit breaker position signal 1DL-TWL and the first not gate (5) connect, the second circuit breaker position signal 2DL-TWL, the 3rd circuit breaker position signal 3DL-TWL and the signal of the second not gate (6), No. 1 bus voltage signal U1With No. 2 bus voltage signal U2, outfan and the first time-delay mechanism (7) are connected；The second electric current I having 3 inputs to be No. 1 inlet wire with door (2)ISignal, voltage UISignal and voltage UIISignal, second be connected with door (2) outfan the 3rd with door (3) input；3rd has one outfan of 2 inputs with door (3), and input is that the first deferred mount (7) output signal and second and door (2) export signal, and outfan connects the second time-delay mechanism (8) input；The output signal of the second time-delay mechanism (8) connect respectively the 3rd broadening time-delay mechanism (9) input and the 4th with door (4) input；3rd broadening time-delay mechanism (9) outfan connects breaking coil 1TJ respectively and tripping operation drives signal 1xj；The 4th output signal having 2 inputs to be the second time-delay mechanism (8) with door (4) and first or door (11) output signal, the 4th is connected the 4th broadening time-delay mechanism (10) with door (4) outfan；4th broadening time-delay mechanism (10) outfan connects closing coil 2HJ respectively and closing coil drives signal 2xj；First or signals that the input of door (11) is two reflection the first chopper 1DL positions, respectively the first circuit breaker position signal 1DL-TWL and the first circuit breaker position signal 1DL-HWL different for circuit breaker position signal 1DL-TWL from first；Second or the input of door (12) be block signal BS, second or door (12) outfan connect the first time-delay mechanism (7)。
2. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described first time-delay mechanism (7) is time delay, the 10-20 second。
3. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described voltage UIISignal is second group of voltage circle voltage of No. 1 primary voltage transformer。
4. a kind of automatic throw-in equipment of emergency power supply according to claim 3, it is characterised in that described voltage UIISignal is in Bulk Supply Substation, the secondary voltage of low-pressure side。
5. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described first circuit breaker position signal 1DL-HWL is the contact contrary with the first chopper 1DL contact in the first circuit breaker position signal 1DL-TWL。
6. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described first circuit breaker position signal 1DL-HWL is one group of tripping position relay contact different in breaker operation cabinet and the first circuit breaker position signal 1DL-TWL。
7. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described first circuit breaker position signal 1DL-HWL is a combination gate position relay contact different in breaker operation cabinet and the first circuit breaker position signal 1DL-TWL。
8. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described 3rd broadening time-delay mechanism (9) time is set as 200 milliseconds。
9. a kind of automatic throw-in equipment of emergency power supply according to claim 1, it is characterised in that described 4th broadening time-delay mechanism (10) time is set as 200 milliseconds。
CN201610215418.3A 2016-04-08 2016-04-08 A kind of automatic throw-in equipment of emergency power supply Active CN105703476B (en)

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CN105703476B CN105703476B (en) 2019-01-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130170A (en) * 2016-07-17 2016-11-16 安徽卓越电气有限公司 A kind of standby power system
CN111614260A (en) * 2019-06-25 2020-09-01 南京拓途电子有限公司 Circuit for reliably driving coil load under low frequency

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201215898Y (en) * 2008-06-27 2009-04-01 南京南瑞继保电气有限公司 Backup auto-activating device having remote auto-activating function
CN101552489A (en) * 2008-12-23 2009-10-07 江苏省电力公司镇江供电公司 Method for controlling automatic operation of standby power by microcomputer of inner bridge and single bus connection
CN205544571U (en) * 2016-04-08 2016-08-31 国家电网公司 Automatic throw -in equipment of emergency power supply

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201215898Y (en) * 2008-06-27 2009-04-01 南京南瑞继保电气有限公司 Backup auto-activating device having remote auto-activating function
CN101552489A (en) * 2008-12-23 2009-10-07 江苏省电力公司镇江供电公司 Method for controlling automatic operation of standby power by microcomputer of inner bridge and single bus connection
CN205544571U (en) * 2016-04-08 2016-08-31 国家电网公司 Automatic throw -in equipment of emergency power supply

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130170A (en) * 2016-07-17 2016-11-16 安徽卓越电气有限公司 A kind of standby power system
CN111614260A (en) * 2019-06-25 2020-09-01 南京拓途电子有限公司 Circuit for reliably driving coil load under low frequency
CN111614260B (en) * 2019-06-25 2022-05-03 南京拓途电子有限公司 Circuit for reliably driving coil load under low frequency

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