CN103199492A - Motion simulation method of protection constant value - Google Patents
Motion simulation method of protection constant value Download PDFInfo
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- CN103199492A CN103199492A CN2013101046347A CN201310104634A CN103199492A CN 103199492 A CN103199492 A CN 103199492A CN 2013101046347 A CN2013101046347 A CN 2013101046347A CN 201310104634 A CN201310104634 A CN 201310104634A CN 103199492 A CN103199492 A CN 103199492A
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Abstract
The invention discloses a motion simulation method of a protection constant value. The motion simulation method can simulate switch motion full processes of distance protection, current voltage protection, zero sequence current protection and transformer reserve protection, checks accuracy of the protection constant value, improves motion stimulation calculating speed of the protection constant value and provides guarantee for safe stable operation of a power grid. The motion simulation method comprises the steps of (1) initialing data including failure calculating for the first time; (2) reading a switch in the protective research range; (3) judging whether the switch meets an end condition or not, jumping to a step (8) if yes, and executing a step (4) if not; (4) comparing switch reading constant value information in the research range with the failure calculating result, and fining out all starting switches, motion switches and returning switches; (5) judging whether the motion switches exist, executing the step (6) if yes, and jumping to the step (7) if not; (6) tripping off the motion switches, and conducting the failure calculating; (7) taking time of next calculating, and jumping to the step (3); and (8) finishing.
Description
Technical field
The present invention relates to the technical field that the relay protection of power system definite value is checked, relate in particular to a kind of action simulation method of protecting definite value.
Background technology
The modern power network scale constantly enlarges, and electric network composition is complicated day by day, and this workload that causes relay protection setting to calculate is also increasing, and makes that the cooperation of protection definite value is also more and more difficult.
Adjust when calculating, operational mode adopts several modes such as maximum, minimum and maintenance to come all operational modes of simplified summary, and the definite value of protection is calculated according to such operational mode.In the calculating of protection range and matching relationship, generally all can consider bigger nargin.All these are restricted protection constant value calculation precision, can't adapt to the variation of power system operating mode, are difficult to guarantee that adjusting of definite value is the best with cooperating.
Calculate the problem that exists at relay protection setting, definite value is checked and is just seemed particularly important.The simulation of protection definite value action is an important part during definite value is checked.
Along with the expansion year by year of electrical network scale, more and more higher to the reliability requirement of electrical network at present, can the definite value scheme that protection is adopted correctly excise the important symbol that all kinds of faults that take place in the reality become assessment relay protection setting level.Use the Computer simulation technology to simulate electric power system fault, check the reasonability of protection definite value, the action behavior of analyzing protection is very necessary.
Summary of the invention
For overcoming the defective of prior art, the technical problem to be solved in the present invention provided a kind of can the simulated range protection, the switch motion overall process of current/voltage protection, zero-sequence current protection and transformer backup protection, check the protection definite value accuracy, improve protection definite value action simulation computational speed, the action simulation method of the protection definite value that provides safeguard for the safe and stable operation of electrical network.
Technical scheme of the present invention is: the action simulation method of this protection definite value may further comprise the steps:
(1) initialization data comprises primary calculation of fault;
(2) switch in the fetch protection research range;
(3) judging whether to satisfy end condition, is jump procedure (8) then, otherwise execution in step (4);
(4) switch in the research range is read definite value information and calculation of fault result comparison, find out all starting switches, step switch and Returning switch;
(5) judged whether step switch, if then execution in step (6) is arranged, otherwise jump procedure (7);
(6) with the step switch tripping, carry out calculation of fault;
(7) take off time calculating constantly, jump procedure (3);
(8) finish.
This method is based on calculation of fault; adopt the logic only particular moment is simulated, improved protection definite value action simulation computational speed, can simulated range protection, the switch motion overall process of current/voltage protection, zero-sequence current protection and transformer backup protection, check the accuracy of protecting definite value, provide safeguard for the safe and stable operation of electrical network.
Description of drawings
Fig. 1 is the flow chart according to the action simulation method of protection definite value of the present invention;
Fig. 2 is the detail flowchart of step of the present invention (4);
Fig. 3 is time calculating detail flowchart constantly that takes off of step of the present invention (7).
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 1, the action simulation method of this protection definite value may further comprise the steps:
(1) initialization data comprises primary calculation of fault;
(2) switch in the fetch protection research range;
(3) judging whether to satisfy end condition, is jump procedure (8) then, otherwise execution in step (4);
(4) switch in the research range is read definite value information and calculation of fault result comparison, find out all starting switches, step switch and Returning switch;
(5) judged whether step switch, if then execution in step (6) is arranged, otherwise jump procedure (7);
(6) with the step switch tripping, carry out calculation of fault;
(7) take off time calculating constantly, jump procedure (3);
(8) finish.
This method is based on calculation of fault; adopt the logic only particular moment is simulated, improved protection definite value action simulation computational speed, can simulated range protection, the switch motion overall process of current/voltage protection, zero-sequence current protection and transformer backup protection, check the accuracy of protecting definite value, provide safeguard for the safe and stable operation of electrical network.
Preferably, also comprise: step (9) printed report.
Preferably, as shown in Figure 2, described step (4) comprises step by step following:
(4.1) under various operational modes, parameter is set as required;
(4.2) determine operational mode;
(4.3) determine fault type;
(4.4) obtain the calculation of fault result quantities;
(4.5) the calculation of fault result quantities of comparison step (4.4) and the protection definite value that draws according to step (4.1);
(4.6) judging whether to meet the protection operation condition, is execution in step (4.7) then, otherwise the protection definite value jump procedure (4.5) that draws according to step (4.1);
(4.7) jump relevant protection;
(4.8) judging whether tripping of switch, is jump procedure (4.10) then, otherwise execution in step (4.9);
(4.9) adjust relevant mode automatically, carry out calculation of fault again, execution in step (4.4);
(4.10) finish printed report.
Preferably, as shown in Figure 3, time calculating of taking off of described step (7) comprises step by step following constantly:
(7.1) determine that certain calculates constantly;
(7.2) determine certain type of protection;
(7.3) judging whether protection starts, is execution in step (7.4) then, otherwise execution in step (7.5);
(7.4) judging whether to return, is execution in step (7.7) then, otherwise execution in step (7.8);
(7.5) obtain definite value and measured value also relatively;
(7.6) judging whether protection starts, is execution in step (7.8) then, otherwise execution in step (7.7);
(7.7) initial condition, and finish;
(7.8) judging whether action, is execution in step (7.9) then, otherwise execution in step (7.10);
(7.9) would trip, and finish;
(7.10) starting state, and finish.
The present invention has the following advantages:
1. based on the protection emulation logic of " significant instant ": adopt by the logic of " significant instant " (being that certain calculates constantly) and carry out emulation, avoid realizing the simulation to the protection successive relay trip by the long hash that produces of time step;
2. embody the sequential of protection action;
3. can investigate the cooperation relation of a certain class protection in electrical network separately, also can investigate protection not of the same race cooperation situation in practice simultaneously.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment all still belong to the protection range of technical solution of the present invention.
Claims (4)
1. an action simulation method of protecting definite value is characterized in that, may further comprise the steps:
(1) initialization data comprises primary calculation of fault;
(2) switch in the fetch protection research range;
(3) judging whether to satisfy end condition, is jump procedure (8) then, otherwise execution in step (4);
(4) switch in the research range is read definite value information and calculation of fault result comparison, find out all starting switches, step switch and Returning switch;
(5) judged whether step switch, if then execution in step (6) is arranged, otherwise jump procedure (7);
(6) with the step switch tripping, carry out calculation of fault;
(7) take off time calculating constantly, jump procedure (3);
(8) finish.
2. the action simulation method of protection definite value according to claim 1 is characterized in that, also comprises: step (9) printed report.
3. the action simulation method of protection definite value according to claim 1 and 2 is characterized in that, described step (4) comprises step by step following:
(4.1) under various operational modes, parameter is set as required;
(4.2) determine operational mode;
(4.3) determine fault type;
(4.4) obtain the calculation of fault result quantities;
(4.5) the calculation of fault result quantities of comparison step (4.4) and the protection definite value that draws according to step (4.1);
(4.6) judging whether to meet the protection operation condition, is execution in step (4.7) then, otherwise the protection definite value jump procedure (4.5) that draws according to step (4.1);
(4.7) jump relevant protection;
(4.8) judging whether tripping of switch, is jump procedure (4.10) then, otherwise execution in step (4.9);
(4.9) adjust relevant mode automatically, carry out calculation of fault again, execution in step (4.4);
(4.10) finish printed report.
4. the action simulation method of protection definite value according to claim 3 is characterized in that, time calculating of taking off of described step (7) comprises step by step following constantly:
(7.1) determine that certain calculates constantly;
(7.2) determine certain type of protection;
(7.3) judging whether protection starts, is execution in step (7.4) then, otherwise execution in step (7.5);
(7.4) judging whether to return, is execution in step (7.7) then, otherwise execution in step (7.8);
(7.5) obtain definite value and measured value also relatively;
(7.6) judging whether protection starts, is execution in step (7.8) then, otherwise execution in step (7.7);
(7.7) initial condition, and finish;
(7.8) judging whether action, is execution in step (7.9) then, otherwise execution in step (7.10);
(7.9) would trip, and finish;
(7.10) starting state, and finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101046347A CN103199492A (en) | 2013-03-28 | 2013-03-28 | Motion simulation method of protection constant value |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101046347A CN103199492A (en) | 2013-03-28 | 2013-03-28 | Motion simulation method of protection constant value |
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| CN103199492A true CN103199492A (en) | 2013-07-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377696A (en) * | 2014-11-28 | 2015-02-25 | 河南理工大学 | Mine high voltage power network quick-break setting simulation inspection method based on incidence matrixes |
| CN106950447A (en) * | 2017-03-22 | 2017-07-14 | 广东电网有限责任公司佛山供电局 | A kind of main transformer protection ratio brake coefficient simulation method of calibration and device |
| CN107271822A (en) * | 2017-07-20 | 2017-10-20 | 中国神华能源股份有限公司 | Protect the method for calibration and device of definite value |
| CN110646687A (en) * | 2019-09-05 | 2020-01-03 | 深圳供电局有限公司 | Distance protection setting value field calibration system and method for power grid transmission line |
| CN111525495A (en) * | 2020-04-14 | 2020-08-11 | 国网河南省电力公司电力科学研究院 | Relay protection fixed value online checking method and system and computer storage medium |
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| CN102290800A (en) * | 2011-08-12 | 2011-12-21 | 华东电网有限公司 | Method for checking relay protection setting |
| CN102496917A (en) * | 2011-12-05 | 2012-06-13 | 华东电网有限公司 | Method for checking and setting relay protection |
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2013
- 2013-03-28 CN CN2013101046347A patent/CN103199492A/en active Pending
Patent Citations (2)
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| CN102290800A (en) * | 2011-08-12 | 2011-12-21 | 华东电网有限公司 | Method for checking relay protection setting |
| CN102496917A (en) * | 2011-12-05 | 2012-06-13 | 华东电网有限公司 | Method for checking and setting relay protection |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377696A (en) * | 2014-11-28 | 2015-02-25 | 河南理工大学 | Mine high voltage power network quick-break setting simulation inspection method based on incidence matrixes |
| CN106950447A (en) * | 2017-03-22 | 2017-07-14 | 广东电网有限责任公司佛山供电局 | A kind of main transformer protection ratio brake coefficient simulation method of calibration and device |
| CN107271822A (en) * | 2017-07-20 | 2017-10-20 | 中国神华能源股份有限公司 | Protect the method for calibration and device of definite value |
| CN107271822B (en) * | 2017-07-20 | 2020-06-05 | 中国神华能源股份有限公司 | Method and device for verifying protection constant value |
| CN110646687A (en) * | 2019-09-05 | 2020-01-03 | 深圳供电局有限公司 | Distance protection setting value field calibration system and method for power grid transmission line |
| CN110646687B (en) * | 2019-09-05 | 2022-02-08 | 深圳供电局有限公司 | Distance protection setting value field calibration system and method for power grid transmission line |
| CN111525495A (en) * | 2020-04-14 | 2020-08-11 | 国网河南省电力公司电力科学研究院 | Relay protection fixed value online checking method and system and computer storage medium |
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Application publication date: 20130710 |