CN103633619A - Cross-interval shared information-based method for main-transformer backup protection accelerated tripping operation based on - Google Patents
Cross-interval shared information-based method for main-transformer backup protection accelerated tripping operation based on Download PDFInfo
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- CN103633619A CN103633619A CN201310699125.3A CN201310699125A CN103633619A CN 103633619 A CN103633619 A CN 103633619A CN 201310699125 A CN201310699125 A CN 201310699125A CN 103633619 A CN103633619 A CN 103633619A
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Abstract
The invention belongs to the technical field of electric power systems, and in particular relates to a cross-interval shared information-based method for main-transformer backup protection accelerated tripping operation, which is applied to an intelligent transformer station. According to the method, an accelerated tripping operation logic is added into a backup protection function of a middle/low voltage side of a main transformer, and the middle/low voltage side of the main transformer realizes accelerated distinguishing by using the cross-interval shared information. By using the method disclosed by the invention, the position information of bus-couple section breaker is transmitted into main-transformer protection, and accelerated skipping of each side circuit breaker of the main transformer is realized under the condition of bus-couple sectioning or bus-couple charging, so that the tripping operation time is shortened, and the method has significant advantages of improving the speed mobility of protection, promoting the protection performance and the like.
Description
Technical field
The invention belongs to technical field of power systems, relate in particular to a kind of main transformer backup protection Accelerated trip method based on across the shared information in interval that is applied to intelligent substation.
Background technology
Main transformer protection is comprised of main protection and various backup protection, backup protection comprised high-pressure side and in, the low pressure protection of surveying.Common, the switching value that main transformer protection gathers comprises the high, medium and low three side circuit breaker positions of main transformer, does not gather the mother section breaker positional information that each is surveyed.When each side trip protection logic meets, the order of tripping operation is that the mother section breaker of first jumping each side of main transformer is jumped each side circuit breaker of main transformer again, as shown in Fig. 3 solid line part.According to this Trip Logic, if mother is divided under position or mother charge condition, this drives the tripping operation of mother section breaker without sending out trip signal to mother intelligent terminal again, but because main transformer protection is not known its deciliter situation, therefore can waste the regular hour.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the invention provides a kind of based on share the main transformer backup protection Accelerated trip method of information across interval.Object is that the positional information of mother section breaker is sent in main transformer protection, divides under position or mother charge condition and realizes and accelerate to jump each side circuit breaker of main transformer, thereby shorten the trip time in mother, improves the quick-action of protection, promotes the performance of protection.
In order to realize foregoing invention object, the present invention is achieved through the following technical solutions:
Based on share the main transformer backup protection Accelerated trip method of information across interval, be that medium/low pressure rear flank at main transformer increases an Accelerated trip logic in for defencive function, main transformer mesolow side backup protection utilization realizes and accelerates to differentiate across the shared information at interval;
When adopting under net hop pattern at main transformer protection net, because main transformer high pressure, mesolow side mother positional information are sent to during each top-cross changes planes by its corresponding mother interval intelligent terminal, and main transformer protection has connected main transformer high-pressure side switch and main transformer mesolow top-cross is changed planes, can realize mother positional information and be passed in main transformer protection;
When directly adopting under straight hop pattern at main transformer, on main transformer protection, set up three fibre circuits and be connected respectively on mother interval intelligent terminal corresponding to main transformer high-pressure side, medium voltage side and low-pressure side, the function of directly adopting to realize mother information;
No matter adopt under net hop pattern directly adopting straight jumping or net, the Trip Logic that first main transformer protection utilizes the analogue quantity switch amount information sending to carry out backup protection is differentiated, if now main transformer protection judgement transformer side circuit breaker should trip, differentiate again this side bus and whether be in a minute position/charged state, if so, direct this side circuit breaker of tripping main transformer; If not, according to the tripping operation order under general case, i.e. this side bus of first tripping, then this side main transformer circuit breaker of tripping.
Described mother interval intelligent terminal is sent to its corresponding section breaker information in main transformer protection in GOOSE mode.
Described mother interval intelligent terminal with being connected of main transformer protection is: net is adopted under net hop pattern without increasing any optical fiber; Directly adopting needs to increase an optical fiber under straight hop pattern mother interval intelligent terminal is connected with main transformer protection.
Described main transformer mesolow side backup protection utilization realizes acceleration differentiation across the shared information at interval, in the situation that Trip Logic is satisfied, if now the position of each side mother section breaker of main transformer is under minute position or charge condition, main transformer protection, without first sending out the section breaker of trip command to each side bus, is directly sent out trip signal to each side intelligent terminal again; If now the position of each side mother section breaker of main transformer is co-bit, by common tripping operation mode, trip, first jump each side mother section breaker, then jump each side circuit breaker of main transformer.
Described main transformer mesolow side backup protection utilization realizes acceleration differentiation across the shared information at interval, no matter adopt under net hop pattern directly adopting straight jumping or net, the Trip Logic that first main transformer protection utilizes the analogue quantity switch amount information sending to carry out backup protection is differentiated, if now main transformer protection judgement transformer side circuit breaker should trip, differentiate again this side bus and whether be in a minute position/charged state, if so, direct this side circuit breaker of tripping main transformer; If not, according to the tripping operation order under general case, i.e. this side bus of first tripping, then this side main transformer circuit breaker of tripping.
Advantage of the present invention and beneficial effect are: the present invention is sent to the positional information of mother section breaker in main transformer protection; in mother, divide under position or mother charge condition and realize and accelerate to jump each side circuit breaker of main transformer; thereby shorten the trip time; there is the quick-action that improves protection, promote the remarkable advantages such as performance of protection.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is that before and after the present invention adopts Accelerated trip method, net is adopted main transformer protection typical case connection layout under net hop pattern;
Fig. 2 directly adopts main transformer protection typical case connection layout under straight hop pattern before and after the present invention adopts Accelerated trip method;
Fig. 3 is main transformer backup protection tripping operation flow chart in prior art;
Fig. 4 is main transformer backup protection tripping operation flow chart under Accelerated trip pattern of the present invention.
Embodiment
The present invention is a kind of based on share the main transformer backup protection Accelerated trip method of information across interval; a kind of main transformer backup protection Accelerated trip method being applied in intelligent substation specifically; to utilize the positional information of each side mother section breaker of main transformer to differentiate whether carry out Accelerated trip operation; in the medium/low pressure rear flank of main transformer, increase an Accelerated trip logic in for defencive function; be mainly used in backup protection in main transformer protection, realize the Accelerated trip of backup protection.
Described main transformer mesolow side backup protection utilization realizes acceleration differentiation across the shared information at interval, in the situation that Trip Logic is satisfied, if now the position of each side mother section breaker of main transformer is under minute position or charge condition, main transformer protection, without first sending out the section breaker of trip command to each side bus, is directly sent out trip signal to each side intelligent terminal again; If now the position of each side mother section breaker of main transformer is co-bit, by common tripping operation mode, trip, first jump each side mother section breaker, then jump each side circuit breaker of main transformer.
Described mother interval intelligent terminal with being connected of main transformer protection is: net is adopted under net hop pattern without increasing any optical fiber; Directly adopting lower of straight hop pattern needs an optical fiber of increase that mother interval intelligent terminal is connected with main transformer protection.
During concrete enforcement, main transformer mesolow side backup protection utilization realizes acceleration differentiation across the shared information at interval, thereby shortens the trip time, improves the quick-action of protection, the performance that lifting is protected
(1) at main transformer protection net, adopt under net hop pattern, because main transformer high pressure, mesolow side mother positional information are sent to during each top-cross changes planes with the form of GOOSE by its corresponding intelligent terminal, and main transformer protection has connected main transformer high-pressure side switch and main transformer mesolow top-cross is changed planes, therefore, without increasing any equipment and connecting line, can realize mother positional information and be passed in main transformer protection, as shown in Figure 1; At main transformer, directly adopt under straight hop pattern, on main transformer protection, newly-increased three fibre circuits are directly linked on mother interval intelligent terminal corresponding to main transformer high-pressure side, medium voltage side and low-pressure side, the function of directly adopting to realize mother information, as shown in Figure 2.
(2) no matter adopt under net hop pattern directly adopting straight jumping or net, the Trip Logic that first main transformer protection utilizes the analogue quantity switch amount information sending to carry out backup protection is differentiated, if now main transformer protection judgement transformer side circuit breaker should trip, differentiate again this side bus and whether be in a minute position/charged state, if so, direct this side circuit breaker of tripping main transformer; If not, according to the tripping operation order under general case, i.e. this side bus of first tripping, then this side main transformer circuit breaker of tripping, as shown in Figure 4.
Invention has been described by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection scope of the present invention.
Claims (5)
1. based on share the main transformer backup protection Accelerated trip method of information across interval, it is characterized in that: be that medium/low pressure rear flank at main transformer increases an Accelerated trip logic in for defencive function, main transformer mesolow side backup protection utilization realizes and accelerates to differentiate across the shared information at interval;
When adopting under net hop pattern at main transformer protection net, because main transformer high pressure, mesolow side mother positional information are sent to during each top-cross changes planes by its corresponding mother interval intelligent terminal, and main transformer protection has connected main transformer high-pressure side switch and main transformer mesolow top-cross is changed planes, can realize mother positional information and be passed in main transformer protection;
When directly adopting under straight hop pattern at main transformer, on main transformer protection, set up three fibre circuits and be connected respectively on mother interval intelligent terminal corresponding to main transformer high-pressure side, medium voltage side and low-pressure side, the function of directly adopting to realize mother information;
No matter adopt under net hop pattern directly adopting straight jumping or net, the Trip Logic that first main transformer protection utilizes the analogue quantity switch amount information sending to carry out backup protection is differentiated, if now main transformer protection judgement transformer side circuit breaker should trip, differentiate again this side bus and whether be in a minute position/charged state, if so, direct this side circuit breaker of tripping main transformer; If not, according to the tripping operation order under general case, i.e. this side bus of first tripping, then this side main transformer circuit breaker of tripping.
2. according to claim 1 based on share the main transformer backup protection Accelerated trip method of information across interval, it is characterized in that: described mother interval intelligent terminal is sent to its corresponding section breaker information in main transformer protection in GOOSE mode.
3. according to claim 1 based on share the main transformer backup protection Accelerated trip method of information across interval, it is characterized in that: described mother interval intelligent terminal with being connected of main transformer protection is: net is adopted under net hop pattern without increasing any optical fiber; Directly adopting needs to increase an optical fiber under straight hop pattern mother interval intelligent terminal is connected with main transformer protection.
4. according to claim 1 based on share the main transformer backup protection Accelerated trip method of information across interval, it is characterized in that: described main transformer mesolow side backup protection utilization realizes acceleration differentiation across the shared information at interval, in the situation that Trip Logic is satisfied, if now the position of each side mother section breaker of main transformer is under minute position or charge condition, main transformer protection, without first sending out the section breaker of trip command to each side bus, is directly sent out trip signal to each side intelligent terminal again; If now the position of each side mother section breaker of main transformer is co-bit, by common tripping operation mode, trip, first jump each side mother section breaker, then jump each side circuit breaker of main transformer.
5. according to claim 1 based on share the main transformer backup protection Accelerated trip method of information across interval, it is characterized in that: described main transformer mesolow side backup protection utilization realizes acceleration differentiation across the shared information at interval, no matter adopt under net hop pattern directly adopting straight jumping or net, the Trip Logic that first main transformer protection utilizes the analogue quantity switch amount information sending to carry out backup protection is differentiated, if now main transformer protection judgement transformer side circuit breaker should trip, differentiate again this side bus and whether be in a minute position/charged state, if, direct this side circuit breaker of tripping main transformer, if not, according to the tripping operation order under general case, i.e. this side bus of first tripping, then this side main transformer circuit breaker of tripping.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104319743A (en) * | 2014-05-30 | 2015-01-28 | 许继电气股份有限公司 | Method and device for quick backup protection of high-voltage side of main transformer based on station region information |
| CN104407244A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Main transformer tripping matrix testing system |
| CN105262064A (en) * | 2015-10-29 | 2016-01-20 | 浙江大学 | Substation area backup protection method used for simplifying transformer in-place backup protection |
| CN106505534A (en) * | 2016-11-17 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | Multistage circuit longitudinal distance protection system and method |
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319743A (en) * | 2014-05-30 | 2015-01-28 | 许继电气股份有限公司 | Method and device for quick backup protection of high-voltage side of main transformer based on station region information |
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| CN105262064A (en) * | 2015-10-29 | 2016-01-20 | 浙江大学 | Substation area backup protection method used for simplifying transformer in-place backup protection |
| CN105262064B (en) * | 2015-10-29 | 2018-02-09 | 浙江大学 | A kind of station domain back-up protection method that can be used for simplifying transformer in-situ back-up protection |
| CN106505534A (en) * | 2016-11-17 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | Multistage circuit longitudinal distance protection system and method |
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
| CN110364996B (en) * | 2019-07-24 | 2021-08-20 | 国家电网有限公司 | Protection device for improving service power supply reliability |
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