CN103532234A - Over-voltage and over-current remote protection method for power system - Google Patents
Over-voltage and over-current remote protection method for power system Download PDFInfo
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- CN103532234A CN103532234A CN201310481231.4A CN201310481231A CN103532234A CN 103532234 A CN103532234 A CN 103532234A CN 201310481231 A CN201310481231 A CN 201310481231A CN 103532234 A CN103532234 A CN 103532234A
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Abstract
The invention discloses an over-voltage and over-current remote protection method for a power system. The security of the power system is better guaranteed through accurate 24-hour uninterrupted monitoring over a power grid on the basis of a relay protection device. The power grid in the invention comprises a current measurement end and a voltage measurement end, the current measurement end and the voltage measurement end are connected to an upper computer through serial ports, the serial drivers of the current measurement end and the voltage measurement end are arranged on the upper computer, monitoring software is also arranged on the upper computer, and the upper computer is connected to the Internet. The remote protection method comprises the following steps: (1) connecting hardware; (2) running the monitoring software; (3) logging in; (4) selecting running modes; (5) starting a network module; (6) opening the serial ports; (7) beginning monitoring.
Description
Technical field
The present invention relates to field of power, be specifically related to electric power system overvoltage, overcurrent protection.
Background technology
Electric power system is in operation, and various faults and irregular operating state may occur, and the most common while is also that the most dangerous fault is the short circuit that various types occurs.Consequence below may producing when being short-circuited:
1,, by the very large short circuit current of fault point and the electric arc of lighting, fault element is damaged;
2, short circuit current, by non-fault element, due to heating and electrodynamic effect, causes their damage or shortens their useful life;
3, in electric power system, the voltage of some areas reduces greatly, destroys the stability of user job or affects factory products quality.
Fault and irregular operating state all may cause accident in electric power system.Accident, with regard to refer to system or wherein the normal operation of a part destroyed, and cause the stage that the few power transmission of user or the quality of power supply are degenerated and can not be allowed, even cause the damage of loss of life or personal injury and electric equipment.
The generation of systematic failures, except the factor due to natural conditions, general person does not cause because the mistake of the defect in device fabrication, design and installation, repair quality are high or operation maintenance is improper.Therefore, as long as give full play to people's subjective initiative, correctly grasp objective law, strengthen the maintenance of equipment and maintenance, just may greatly reduce the probability that accident occurs, accident was eliminated before occurring.
In electric power system, except the possibility that should take every active measures elimination or minimizing to break down, once fault occurs, must excise rapidly and selectively fault element, this is one of most effectual way guaranteeing safe operation of power system.The time of excision fault usually requires little of a few tenths of even a few percent second, facts have proved that the protective device being only installed on each electric component just likely meets this requirement.This protective device up to this point, is by the constituting of single relay or relay and its auxiliary device, therefore be called protective relaying device mostly.Protective relaying device, just refers to that can react electric component in electric power system breaks down or irregular operating state, and moves in circuit breaker trip or send a kind of automatics of signal.Its basic task is:
Automatically, rapidly, selectively fault element is excised from electric power system, make fault element avoid continuing to be destroyed, guarantee that other fault-free part recovers rapidly normal operation;
The irregular operating state of reaction electric component, and for example, according to the condition of operation maintenance (having or not frequent operator on duty), and move in sending signal, load shedding or tripping operation.Now generally do not require rapidly action of protection, but according to the extent of injury of electric power system and element thereof is stipulated to certain time delay, in order to avoid unnecessary action and the misoperation that causes due to interference.
In view of above background technology, with respect to protective relaying device, on protective relaying device basis, accurate and continual monitoring in 24 hours, could take measure accurately in time reliably, just can better ensure the safety of electric power system.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art; a kind of electric power system overvoltage, overcurrent remote protecting method are provided; its by protective relaying device basis accurately and also 24 hours continual to power system monitor, better ensured the safety of electric power system.
The technical solution adopted for the present invention to solve the technical problems is: electric power system overvoltage, overcurrent remote protecting method, comprise the electrical network with current measurement end and voltage measurement end, described current measurement end and voltage measurement end are connected to host computer computer by serial ports, the serial port drive of current measurement end and voltage measurement end is installed on host computer computer, monitoring software is also installed on host computer computer, and described host computer computer is connected to the Internet; Described remote protecting method comprises following steps:
(1) step that hardware connects; Current measurement end and power measurement end are connected on the serial ports of host computer computer;
(2) step of operation monitoring software; Open the monitoring software on host computer computer;
(3) step of login; Input is logined after password and is carried out the follow-up operation to monitoring software;
(4) step that operational mode is selected; On monitoring software, select operational mode, described operational mode comprises automatic operational mode, conventional operation pattern and checks pattern;
(5) start the step of mixed-media network modules mixed-media; When selecting conventional operation pattern in step (4), manually boot mixed-media network modules mixed-media, when selecting automatic operational mode in step (4), automatically start mixed-media network modules mixed-media;
(6) open the step of serial ports; On monitoring software, open the serial ports that current measurement end is connected with voltage measurement end;
(7) start the step of monitoring; After execution of step (6), on monitoring software, click " beginning ", start monitoring.
Further: execute after above-mentioned step (7), also comprise the step of monitoring parameter setting and the step that voltage calculates; The step of described monitoring parameter setting comprises triggering alarm minimum and arranges and trigger the setting of alarm peak; The step that described voltage calculates is by the voltage of A/D module, amplifies and calculates real voltage.
Further: also comprise the method for long-range feedback, the method for described long-range feedback comprises following steps:
The step that a, webpage log in; On internet web page, open webpage remote power feeding system, after input password, carry out authentication;
The step of b, checking monitoring information; Checking monitoring information under the pattern of checking in webpage remote power feeding system;
The step of c, execution instruction; Comprise and carry out fixed instruction and carry out custom instruction, described execution fixed instruction is in webpage remote power feeding system, to click corresponding fixed instruction title to carry out fixed instruction; Described execution custom instruction is in text input frame, to input command content to carry out custom instruction.
Further: above-mentioned fixed instruction comprises the instruction of host computer shut down of computer, cancel host computer shutdown command, read All Alerts recording instruction, the instruction of enforced opening host computer and the instruction of positive closing host computer.
The present invention compared with prior art has the following advantages:
The present invention passes through electrical network extracted current measuring junction and voltage measurement end; and current measurement end and voltage measurement end are connected to the computer operating state of monitor current and voltage in real time; thus; can realize uninterrupted monitoring in 24 hours of electrical network overvoltage, overcurrent; effectively protected electrical network; meanwhile; the present invention can also carry out long-range feedback; realized long-range uninterrupted monitoring; overvoltage, the over-current state of electrical network are moved completely under people's monitoring, once occur extremely can promptly and accurately take measures.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention;
Fig. 2 is the flow chart of long-range feedback operation mode of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the invention is described:
Fig. 1 and Fig. 2 show flow chart of the present invention, as shown in Figure 1, electric power system overvoltage of the present invention, overcurrent remote protecting method, comprise the electrical network with current measurement end and voltage measurement end, described current measurement end and voltage measurement end are connected to host computer computer by serial ports, the serial port drive of current measurement end and voltage measurement end is installed on host computer computer, monitoring software is also installed on host computer computer, described host computer computer is connected to the Internet; Described remote protecting method comprises following steps:
(1) step that hardware connects; Current measurement end and power measurement end are connected on the serial ports of host computer computer;
(2) step of operation monitoring software; Open the monitoring software on host computer computer;
(3) step of login; Input is logined after password and is carried out the follow-up operation to monitoring software;
(4) step that operational mode is selected; On monitoring software, select operational mode, described operational mode comprises automatic operational mode, conventional operation pattern and checks pattern;
(5) start the step of mixed-media network modules mixed-media; When selecting conventional operation pattern in step (4), manually boot mixed-media network modules mixed-media, when selecting automatic operational mode in step (4), automatically start mixed-media network modules mixed-media;
(6) open the step of serial ports; On monitoring software, open the serial ports that current measurement end is connected with voltage measurement end;
(7) start the step of monitoring; After execution of step (6), on monitoring software, click " beginning ", start monitoring.
Concrete, execute after above-mentioned step (7), also comprise the step of monitoring parameter setting and the step that voltage calculates; The step of described monitoring parameter setting comprises triggering alarm minimum and arranges and trigger the setting of alarm peak; The step that described voltage calculates is by the voltage of A/D module, amplifies and calculates real voltage.
As shown in Figure 2, also comprise the method for long-range feedback, the method for described long-range feedback comprises following steps:
The step that a, webpage log in; On internet web page, open webpage remote power feeding system, after input password, carry out authentication;
The step of b, checking monitoring information; Checking monitoring information under the pattern of checking in webpage remote power feeding system;
The step of c, execution instruction; Comprise and carry out fixed instruction and carry out custom instruction, described execution fixed instruction is in webpage remote power feeding system, to click corresponding fixed instruction title to carry out fixed instruction; Described execution custom instruction is in text input frame, to input command content to carry out custom instruction.
More specifically, above-mentioned fixed instruction comprises the instruction of host computer shut down of computer, cancels host computer shutdown command, reads All Alerts recording instruction, the instruction of enforced opening host computer and the instruction of positive closing host computer.
By reference to the accompanying drawings the preferred embodiment for the present invention is explained in detail above, but the invention is not restricted to above-mentioned execution mode, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, make a variety of changes.
Do not depart from the spirit and scope of the present invention and can make many other changes and remodeling.Should be appreciated that and the invention is not restricted to specific execution mode, scope of the present invention is defined by the following claims.
Claims (4)
1. electric power system overvoltage, overcurrent remote protecting method, it is characterized in that: comprise the electrical network with current measurement end and voltage measurement end, described current measurement end and voltage measurement end are connected to host computer computer by serial ports, the serial port drive of current measurement end and voltage measurement end is installed on host computer computer, monitoring software is also installed on host computer computer, and described host computer computer is connected to the Internet; Described remote protecting method comprises following steps:
(1) step that hardware connects; Current measurement end and power measurement end are connected on the serial ports of host computer computer;
(2) step of operation monitoring software; Open the monitoring software on host computer computer;
(3) step of login; Input is logined after password and is carried out the follow-up operation to monitoring software;
(4) step that operational mode is selected; On monitoring software, select operational mode, described operational mode comprises automatic operational mode, conventional operation pattern and checks pattern;
(5) start the step of mixed-media network modules mixed-media; When selecting conventional operation pattern in step (4), manually boot mixed-media network modules mixed-media, when selecting automatic operational mode in step (4), automatically start mixed-media network modules mixed-media;
(6) open the step of serial ports; On monitoring software, open the serial ports that current measurement end is connected with voltage measurement end;
(7) start the step of monitoring; After execution of step (6), on monitoring software, click " beginning ", start monitoring.
2. electric power system overvoltage as claimed in claim 1, overcurrent remote protecting method, is characterized in that: execute after described step (7), also comprise the step of monitoring parameter setting and the step that voltage calculates; The step of described monitoring parameter setting comprises triggering alarm minimum and arranges and trigger the setting of alarm peak; The step that described voltage calculates is by the voltage of A/D module, amplifies and calculates real voltage.
3. electric power system overvoltage as claimed in claim 1, overcurrent remote protecting method, is characterized in that: also comprise the method for long-range feedback, the method for described long-range feedback comprises following steps:
The step that a, webpage log in; On internet web page, open webpage remote power feeding system, after input password, carry out authentication;
The step of b, checking monitoring information; Checking monitoring information under the pattern of checking in webpage remote power feeding system;
The step of c, execution instruction; Comprise and carry out fixed instruction and carry out custom instruction, described execution fixed instruction is in webpage remote power feeding system, to click corresponding fixed instruction title to carry out fixed instruction; Described execution custom instruction is in text input frame, to input command content to carry out custom instruction.
4. electric power system overvoltage as claimed in claim 3, overcurrent remote protecting method; it is characterized in that: described fixed instruction comprises the instruction of host computer shut down of computer; cancel host computer shutdown command, read All Alerts recording instruction, the instruction of enforced opening host computer and the instruction of positive closing host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481231.4A CN103532234A (en) | 2013-10-15 | 2013-10-15 | Over-voltage and over-current remote protection method for power system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310481231.4A CN103532234A (en) | 2013-10-15 | 2013-10-15 | Over-voltage and over-current remote protection method for power system |
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| CN201310481231.4A Pending CN103532234A (en) | 2013-10-15 | 2013-10-15 | Over-voltage and over-current remote protection method for power system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090032396A (en) * | 2007-09-27 | 2009-04-01 | 한국전력공사 | Electric supply automation system |
| CN102403657A (en) * | 2011-10-29 | 2012-04-04 | 枣庄矿业集团高庄煤业有限公司 | Cyfzd intelligent low voltage switch cabinet |
| CN202231491U (en) * | 2011-09-28 | 2012-05-23 | 上海大全赛奥法电气科技有限公司 | Power distribution monitoring system |
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2013
- 2013-10-15 CN CN201310481231.4A patent/CN103532234A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090032396A (en) * | 2007-09-27 | 2009-04-01 | 한국전력공사 | Electric supply automation system |
| CN202231491U (en) * | 2011-09-28 | 2012-05-23 | 上海大全赛奥法电气科技有限公司 | Power distribution monitoring system |
| CN102403657A (en) * | 2011-10-29 | 2012-04-04 | 枣庄矿业集团高庄煤业有限公司 | Cyfzd intelligent low voltage switch cabinet |
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Application publication date: 20140122 |