CN113381376A - Power transmission and transformation intelligence control system - Google Patents

Power transmission and transformation intelligence control system Download PDF

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Publication number
CN113381376A
CN113381376A CN202110580148.7A CN202110580148A CN113381376A CN 113381376 A CN113381376 A CN 113381376A CN 202110580148 A CN202110580148 A CN 202110580148A CN 113381376 A CN113381376 A CN 113381376A
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China
Prior art keywords
resistor
diode
signal
circuit
comparator
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CN202110580148.7A
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Chinese (zh)
Inventor
张永赞
张菲翔
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Pingdingshan Yudian Electrical Equipment Co ltd
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Pingdingshan Yudian Electrical Equipment Co ltd
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Priority to CN202110580148.7A priority Critical patent/CN113381376A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
    • H02J13/36—
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems

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Abstract

本发明公开了一种输变电智能控制系统，包括：依次相连的信号输入电路、信号判断电路、信号分配器；所述信号分配器分别与所述控制器以及故障信号输出电路相连，信号检测电路分别与所述信号输出电路、所述控制器相连，所述故障信号输出电路与报警电路相连，所述控制器与开关设备相连。采用本发明，使得对输变电系统开关设备的控制更加精准，避免开关设备出现误操作。

Figure 202110580148

The invention discloses an intelligent control system for power transmission and transformation, comprising: a signal input circuit, a signal judgment circuit and a signal distributor which are connected in sequence; The circuits are respectively connected with the signal output circuit and the controller, the fault signal output circuit is connected with the alarm circuit, and the controller is connected with the switchgear. By adopting the invention, the control of the switch equipment of the power transmission and transformation system is made more precise, and the misoperation of the switch equipment is avoided.

Figure 202110580148

Description

Power transmission and transformation intelligence control system
Technical Field
The invention relates to the field of control, in particular to an intelligent control system for power transmission and transformation.
Background
With the construction and development of ultra-high and extra-high voltage transmission projects, the coverage area of the interconnected power grid is gradually enlarged, and the influence of the operation safety of a power transmission and transformation system on the safe and reliable operation of the power grid is more prominent.
The basic electrical equipment of the power transmission and transformation system mainly comprises a lead, a transformer, switch equipment, a high-voltage insulator and the like. At present, users often do not have accurate enough control to switchgear in a power transmission and transformation system, and are easily interfered by external signals, so that a controller generates misjudgment to received signals, and the switchgear is controlled to be turned on or turned off by mistake. Therefore, the inventor of the present invention proposes an intelligent control system for power transmission and transformation to make the control of the switch device of the power transmission and transformation system more accurate.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an intelligent control system for power transmission and transformation, which can control a switching device of a power transmission and transformation system more accurately and avoid misoperation of the switching device.
Based on this, the invention provides an intelligent control system for power transmission and transformation, which comprises:
the signal input circuit, the signal judging circuit and the signal distributor are connected in sequence;
the signal distributor is respectively connected with the controller and the fault signal output circuit, the signal detection circuit is respectively connected with the signal output circuit and the controller, the fault signal output circuit is connected with the alarm circuit, and the controller is connected with the switch device.
Wherein the signal input circuit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a second diode, a third diode, a fourth diode, a first capacitor and a first optical coupler isolator; the anode of the first diode is connected with a signal input end, the cathode of the first diode is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the second resistor, the other end of the second resistor is respectively connected with the cathode of the third diode and one end of the third resistor, the other end of the third resistor is connected with the cathode of the second diode, the anode of the second diode is respectively connected with the cathode of the fourth diode and the first end of the first optical coupler isolator, the anode of the fourth diode is connected with the second end of the first optical coupler isolator, the anodes of the third diode and the fourth diode are both grounded, the fourth end of the first optical coupler isolator is connected with one end of the fourth resistor, and the other end of the fourth resistor is respectively connected with the controller and one end of the first capacitor, the other end of the first capacitor and the third end of the first optical coupler isolator are grounded, and one end of the capacitor is used as the output end of the signal input circuit.
Wherein, the signal judging circuit includes: the first comparator, the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor; the inverting input end of the first comparator is connected with the output end of the signal input circuit, the non-inverting input end of the first comparator is respectively connected with one end of the sixth resistor, one end of the seventh resistor and one end of the eighth resistor, the other end of the sixth resistor is grounded, the other end of the seventh resistor is respectively connected with a power supply voltage and one end of the fifth resistor, the other end of the eighth resistor is connected with the output end of the first comparator, the other end of the fifth resistor is connected with the output end of the first comparator, and the output end of the first comparator is connected with the input end of the signal distributor.
Wherein the distributor is configured to determine whether to input the determination signal to the controller or to input the determination signal to the fault signal output circuit according to the determination signal input by the signal determination circuit.
Wherein the fault signal output circuit includes: a ninth resistor, a tenth resistor, a second capacitor, a fifth diode, a sixth diode, a seventh diode, and a second comparator; the negative electrode of the seventh diode is connected with the first output end of the distributor, the positive electrode of the seventh diode is respectively connected with one end of the ninth resistor, the positive electrode of the fifth diode and the non-inverting input end of the second comparator, the inverting input end of the second comparator is connected with reference voltage, the output end of the second comparator is respectively connected with one end of the second capacitor and one end of the tenth resistor, the other end of the second capacitor is respectively connected with the negative electrode of the fifth diode and the positive electrode of the sixth diode, the negative electrode of the sixth diode is connected with the other end of the tenth resistor, the other end of the ninth resistor and the other end of the tenth resistor are both connected with power supply voltage, and the output end of the second comparator is used as the output end of the fault signal output circuit.
Wherein the alarm circuit comprises: the first triode, the eleventh resistor, the buzzer, the relay and the audible and visual alarm are connected; a base electrode of the first triode is connected with an output end of the fault signal output circuit, an emitting electrode of the first triode is connected with a first end of the buzzer and a first end of the relay through the eleventh resistor, a second end of the buzzer and a second end of the relay are connected with an external power supply, and a collector electrode of the first triode is grounded; the third end of the relay is connected with an external power supply, the fourth end of the relay is connected with the first end of the audible and visual alarm, and the second end of the audible and visual alarm is grounded.
Wherein the signal detection circuit comprises: the device comprises a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a second triode, an eighth diode and a second optocoupler isolator; the cathode of the eighth diode is connected between the cathode of the first diode and the first resistor, the anode of the eighth diode is connected with the collector of the second triode, the emitter of the second triode is connected with external voltage, the base electrode of the second triode is connected with the fourth end of the second optical coupler isolator, the third end of the second optical coupler isolator is connected with one end of the thirteenth resistor, the other end of the thirteenth resistor is grounded, the first end of the second optical coupler isolator is connected with one end of the fourteenth resistor, the other end of the fourteenth resistor is respectively connected with a power supply voltage and one end of the twelfth resistor, the other end of the twelfth resistor is connected between the first end of the first optical coupler isolator and the fourth resistor, and the second end of the second optical coupler isolator is connected with the controller.
By adopting the invention, the signal input circuit has strong anti-interference capability, the signal input by the signal input circuit is judged by the signal judgment circuit to determine whether the input signal is changed within the range of the set threshold value, if so, the signal distributor distributes the signal to the controller, if not, the signal distributor distributes the signal, namely the fault signal, to the fault signal output circuit, the fault signal output circuit realizes accurate locking of the fault signal, keeps the fault signal within the preset time, and transmits the fault signal to the alarm circuit for alarming when the preset time is reached. The signal detection circuit is used for ensuring the normal use of the signal input circuit and further ensuring the accuracy of the input signal of the controller. The controller may control whether the switching device is turned on or off according to an input signal. By adopting the invention, the control on the switch equipment of the power transmission and transformation system can be more accurate, and the switch equipment is prevented from misoperation or abnormal operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of an intelligent control system for power transmission and transformation provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a signal input circuit provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a signal determination circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a fault signal output circuit provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of an alarm circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of an intelligent control system for power transmission and transformation provided in an embodiment of the present invention, where the system includes:
a signal input circuit 104, a signal judgment circuit 105 and a signal distributor 106 which are connected in sequence;
the signal distributor 106 is respectively connected with the controller 102 and the fault signal output circuit 107, the signal detection circuit 101 is respectively connected with the signal output circuit 104 and the controller 102, the fault signal output circuit 107 is connected with the alarm circuit 108, and the controller 102 is connected with the switch device 103.
Fig. 2 is a schematic diagram of a signal input circuit provided by an embodiment of the present invention, the signal input circuit including: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a second diode, a third diode, a fourth diode, a first capacitor and a first optical coupler isolator; the anode of the first diode is connected with a signal input end, the cathode of the first diode is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the second resistor, the other end of the second resistor is respectively connected with the cathode of the third diode and one end of the third resistor, the other end of the third resistor is connected with the cathode of the second diode, the anode of the second diode is respectively connected with the cathode of the fourth diode and the first end of the first optical coupler isolator, the anode of the fourth diode is connected with the second end of the first optical coupler isolator, the anodes of the third diode and the fourth diode are both grounded, the fourth end of the first optical coupler isolator is connected with one end of the fourth resistor, and the other end of the fourth resistor is respectively connected with the controller and one end of the first capacitor, the other end of the first capacitor and the third end of the first optical coupler isolator are grounded, and one end of the capacitor is used as the output end of the signal input circuit.
Fig. 3 is a schematic diagram of a signal determination circuit according to an embodiment of the present invention, where the signal determination circuit includes: the first comparator, the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor; the inverting input end of the first comparator is connected with the output end of the signal input circuit, the non-inverting input end of the first comparator is respectively connected with one end of the sixth resistor, one end of the seventh resistor and one end of the eighth resistor, the other end of the sixth resistor is grounded, the other end of the seventh resistor is respectively connected with a power supply voltage and one end of the fifth resistor, the other end of the eighth resistor is connected with the output end of the first comparator, the other end of the fifth resistor is connected with the output end of the first comparator, and the output end of the first comparator is connected with the input end of the signal distributor.
Wherein the distributor is configured to determine whether to input the determination signal to the controller or to input the determination signal to the fault signal output circuit according to the determination signal input by the signal determination circuit.
Fig. 4 is a schematic diagram of a fault signal output circuit provided by an embodiment of the present invention, the fault signal output circuit including: a ninth resistor, a tenth resistor, a second capacitor, a fifth diode, a sixth diode, a seventh diode, and a second comparator; the negative electrode of the seventh diode is connected with the first output end of the distributor, the positive electrode of the seventh diode is respectively connected with one end of the ninth resistor, the positive electrode of the fifth diode and the non-inverting input end of the second comparator, the inverting input end of the second comparator is connected with reference voltage, the output end of the second comparator is respectively connected with one end of the second capacitor and one end of the tenth resistor, the other end of the second capacitor is respectively connected with the negative electrode of the fifth diode and the positive electrode of the sixth diode, the negative electrode of the sixth diode is connected with the other end of the tenth resistor, the other end of the ninth resistor and the other end of the tenth resistor are both connected with power supply voltage, and the output end of the second comparator is used as the output end of the fault signal output circuit.
Fig. 5 is a schematic diagram of an alarm circuit provided in an embodiment of the present invention, the alarm circuit including: the first triode, the eleventh resistor, the buzzer, the relay and the audible and visual alarm are connected; a base electrode of the first triode is connected with an output end of the fault signal output circuit, an emitting electrode of the first triode is connected with a first end of the buzzer and a first end of the relay through the eleventh resistor, a second end of the buzzer and a second end of the relay are connected with an external power supply, and a collector electrode of the first triode is grounded; the third end of the relay is connected with an external power supply, the fourth end of the relay is connected with the first end of the audible and visual alarm, and the second end of the audible and visual alarm is grounded.
The signal detection circuit includes: the device comprises a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a second triode, an eighth diode and a second optocoupler isolator; the cathode of the eighth diode is connected between the cathode of the first diode and the first resistor, the anode of the eighth diode is connected with the collector of the second triode, the emitter of the second triode is connected with external voltage, the base electrode of the second triode is connected with the fourth end of the second optical coupler isolator, the third end of the second optical coupler isolator is connected with one end of the thirteenth resistor, the other end of the thirteenth resistor is grounded, the first end of the second optical coupler isolator is connected with one end of the fourteenth resistor, the other end of the fourteenth resistor is respectively connected with a power supply voltage and one end of the twelfth resistor, the other end of the twelfth resistor is connected between the first end of the first optical coupler isolator and the fourth resistor, and the second end of the second optical coupler isolator is connected with the controller.
By adopting the invention, the signal input circuit has strong anti-interference capability, the signal input by the signal input circuit is judged by the signal judgment circuit to determine whether the input signal is changed within the range of the set threshold value, if so, the signal distributor distributes the signal to the controller, if not, the signal distributor distributes the signal, namely the fault signal, to the fault signal output circuit, the fault signal output circuit realizes accurate locking of the fault signal, keeps the fault signal within the preset time, and transmits the fault signal to the alarm circuit for alarming when the preset time is reached. The signal detection circuit is used for ensuring the normal use of the signal input circuit and further ensuring the accuracy of the input signal of the controller. The controller may control whether the switching device is turned on or off according to an input signal. By adopting the invention, the control on the switch equipment of the power transmission and transformation system can be more accurate, and the switch equipment is prevented from misoperation or abnormal operation.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (7)

1. The utility model provides a power transmission and transformation intelligence control system which characterized in that includes:
the signal input circuit, the signal judging circuit and the signal distributor are connected in sequence;
the signal distributor is respectively connected with the controller and the fault signal output circuit, the signal detection circuit is respectively connected with the signal output circuit and the controller, the fault signal output circuit is connected with the alarm circuit, and the controller is connected with the switch device.
2. The power transmission and transformation intelligent control system of claim 1, wherein the signal input circuit comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a second diode, a third diode, a fourth diode, a first capacitor and a first optical coupler isolator; the anode of the first diode is connected with a signal input end, the cathode of the first diode is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the second resistor, the other end of the second resistor is respectively connected with the cathode of the third diode and one end of the third resistor, the other end of the third resistor is connected with the cathode of the second diode, the anode of the second diode is respectively connected with the cathode of the fourth diode and the first end of the first optical coupler isolator, the anode of the fourth diode is connected with the second end of the first optical coupler isolator, the anodes of the third diode and the fourth diode are both grounded, the fourth end of the first optical coupler isolator is connected with one end of the fourth resistor, and the other end of the fourth resistor is respectively connected with the controller and one end of the first capacitor, the other end of the first capacitor and the third end of the first optical coupler isolator are grounded, and one end of the capacitor is used as the output end of the signal input circuit.
3. The power transmission and transformation intelligent control system of claim 1, wherein the signal judgment circuit comprises: the first comparator, the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor; the inverting input end of the first comparator is connected with the output end of the signal input circuit, the non-inverting input end of the first comparator is respectively connected with one end of the sixth resistor, one end of the seventh resistor and one end of the eighth resistor, the other end of the sixth resistor is grounded, the other end of the seventh resistor is respectively connected with a power supply voltage and one end of the fifth resistor, the other end of the eighth resistor is connected with the output end of the first comparator, the other end of the fifth resistor is connected with the output end of the first comparator, and the output end of the first comparator is connected with the input end of the signal distributor.
4. The electric transmission and transformation intelligent control system according to claim 1, wherein the distributor is configured to determine whether to input the determination signal to the controller or to input the determination signal to the fault signal output circuit according to the determination signal input by the signal determination circuit.
5. The power transmission and transformation intelligent control system of claim 1, wherein the fault signal output circuit comprises: a ninth resistor, a tenth resistor, a second capacitor, a fifth diode, a sixth diode, a seventh diode, and a second comparator; the negative electrode of the seventh diode is connected with the first output end of the distributor, the positive electrode of the seventh diode is respectively connected with one end of the ninth resistor, the positive electrode of the fifth diode and the non-inverting input end of the second comparator, the inverting input end of the second comparator is connected with reference voltage, the output end of the second comparator is respectively connected with one end of the second capacitor and one end of the tenth resistor, the other end of the second capacitor is respectively connected with the negative electrode of the fifth diode and the positive electrode of the sixth diode, the negative electrode of the sixth diode is connected with the other end of the tenth resistor, the other end of the ninth resistor and the other end of the tenth resistor are both connected with power supply voltage, and the output end of the second comparator is used as the output end of the fault signal output circuit.
6. The power transmission and transformation intelligent control system of claim 1, wherein the alarm circuit comprises: the first triode, the eleventh resistor, the buzzer, the relay and the audible and visual alarm are connected; a base electrode of the first triode is connected with an output end of the fault signal output circuit, an emitting electrode of the first triode is connected with a first end of the buzzer and a first end of the relay through the eleventh resistor, a second end of the buzzer and a second end of the relay are connected with an external power supply, and a collector electrode of the first triode is grounded; the third end of the relay is connected with an external power supply, the fourth end of the relay is connected with the first end of the audible and visual alarm, and the second end of the audible and visual alarm is grounded.
7. The power transmission and transformation intelligent control system of claim 2, wherein the signal detection circuit comprises: the device comprises a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a second triode, an eighth diode and a second optocoupler isolator; the cathode of the eighth diode is connected between the cathode of the first diode and the first resistor, the anode of the eighth diode is connected with the collector of the second triode, the emitter of the second triode is connected with external voltage, the base electrode of the second triode is connected with the fourth end of the second optical coupler isolator, the third end of the second optical coupler isolator is connected with one end of the thirteenth resistor, the other end of the thirteenth resistor is grounded, the first end of the second optical coupler isolator is connected with one end of the fourteenth resistor, the other end of the fourteenth resistor is respectively connected with a power supply voltage and one end of the twelfth resistor, the other end of the twelfth resistor is connected between the first end of the first optical coupler isolator and the fourth resistor, and the second end of the second optical coupler isolator is connected with the controller.
CN202110580148.7A 2021-05-26 2021-05-26 Power transmission and transformation intelligence control system Pending CN113381376A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136756A (en) * 2010-01-21 2011-07-27 陈家斌 10kV power supply region intelligent control system
CN107272813A (en) * 2017-05-15 2017-10-20 南京昶达新材料技术有限公司 A kind of switching signal input circuit
CN207095718U (en) * 2017-05-24 2018-03-13 深圳市沃特玛电池有限公司 High temperature alarm circuit
CN110596509A (en) * 2019-07-09 2019-12-20 国网江苏省电力有限公司徐州供电分公司 Power transmission line fault processing system based on different fault types and detection method thereof
CN211830181U (en) * 2020-02-17 2020-10-30 惠州拓邦电气技术有限公司 Fault signal holding circuit, controller and electrical equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136756A (en) * 2010-01-21 2011-07-27 陈家斌 10kV power supply region intelligent control system
CN107272813A (en) * 2017-05-15 2017-10-20 南京昶达新材料技术有限公司 A kind of switching signal input circuit
CN207095718U (en) * 2017-05-24 2018-03-13 深圳市沃特玛电池有限公司 High temperature alarm circuit
CN110596509A (en) * 2019-07-09 2019-12-20 国网江苏省电力有限公司徐州供电分公司 Power transmission line fault processing system based on different fault types and detection method thereof
CN211830181U (en) * 2020-02-17 2020-10-30 惠州拓邦电气技术有限公司 Fault signal holding circuit, controller and electrical equipment

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Application publication date: 20210910