CN103248017B - Internal faults of switch cabinet 100% rapid protection system and guard method - Google Patents
Internal faults of switch cabinet 100% rapid protection system and guard method Download PDFInfo
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- CN103248017B CN103248017B CN201310178249.7A CN201310178249A CN103248017B CN 103248017 B CN103248017 B CN 103248017B CN 201310178249 A CN201310178249 A CN 201310178249A CN 103248017 B CN103248017 B CN 103248017B
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- 230000003287 optical effect Effects 0.000 claims description 8
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- 230000002596 correlated effect Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 4
- 206010034703 Perseveration Diseases 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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Abstract
The invention provides a kind of internal faults of switch cabinet 100% rapid protection system and guard method.Described 100% rapid protection system comprises main control unit, arc light relay, current unit and arc probe, described arc probe is divided into bus protection to pop one's head in and protection for feed line probe, described bus protection is popped one's head in comprise and is arranged on step-down switch cubicle respectively, the bus-bar room of feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, one group of bus protection probe of the bus-bar room of mother cabinet, the described main control unit of bus protection probe directly or described in being accessed by arc light unit, described protection for feed line probe comprises the protection for feed line probe of cable vault and the switch gear room being arranged on feeder line middle-placed switch cabinet respectively and is arranged on the cable vault of mother cabinet and the protection for feed line probe of switch gear room respectively, main control unit described in described protection for feed line probe is connected by arc light relay.When the present invention can realize inside switch cabinet regional fault 100% protects fast without dead band, avoids the extension of power failure range.
Description
technical field:
The present invention relates to a kind of internal faults of switch cabinet 100% rapid protection system and guard method, belong to fault and detect and resist technology field.
background technology:
Power system transformer substation middle-low voltage switch cabinet bus-bar room, switch gear room and cable vault CT install to be existed without quick main protection defect with upper part; backup protection can only be relied on fault is excised when inside switch cabinet breaks down; excision is long for fault time; switch cubicle may be caused to explode, involve direct current system in station, main transformer by serious consequences such as close-in fault impact damages.
In traditional bus protection, standby overcurrent protection is long for operate time, can not play effective protective effect; Bus differential protection scope is by the restriction of CT installation site, and wiring is complicated, and CT requires high.
Arc protection is as a kind of novel bus protection, and its principle is simple, reliable in action rapid, adapt to various operational mode.But the electric arc protection that part transformer station adopts at present only can realize the quick main protection of switch cabinet bus room; switch gear room, cable vault are considered to CT installs and can realize protection fast by feeding out cell protection with lower part; consider generally not configure arc light monitoring point based on selectivity; but switch gear room, cable vault be the easy happening part of fault often, there is relaying configuration dead band.
summary of the invention:
The object of the invention is to provide a kind of internal faults of switch cabinet comprehensive rapid protecting device for above-mentioned Problems existing; this system can not only realize traditional middle voltage bus bar protection; and the selectivity fast trip of the diverse location such as cable vault, switch gear room, bus-bar room that can realize feeder line middle-placed switch cabinet when breaking down; realize internal faults of switch cabinet 100% protects fast without dead band, avoids the extension of power failure range.
Above-mentioned object is realized by following technical scheme:
Internal faults of switch cabinet 100% rapid protection system, comprise main control unit, arc light relay, current unit and arc probe, described arc probe is divided into bus protection to pop one's head in and protection for feed line probe, described bus protection is popped one's head in comprise and is arranged on step-down switch cubicle respectively, the bus-bar room of feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, one group of bus protection probe of the bus-bar room of mother cabinet, described protection for feed line probe comprises the protection for feed line probe of cable vault and the switch gear room being arranged on feeder line middle-placed switch cabinet respectively and is arranged on the cable vault of mother cabinet and the protection for feed line probe of switch gear room respectively, main control unit described in described protection for feed line probe is connected by arc light relay.
Described internal faults of switch cabinet 100% rapid protection system, the described main control unit of bus protection probe directly or described in being accessed by arc light unit.
Above-mentioned protection system is utilized to carry out the method for the quick protection of internal faults of switch cabinet 100%; the method comprises: arc optical signal is detected in subregion; then adopt selective protection method, described selective protection method comprises protection for feed line method, bus bar protecting method, mother guard method and incoming relay-protection method.
The method that described internal faults of switch cabinet 100% is protected fast, described subregion is detected arc optical signal and is referred to inside switch cabinet is divided into bus protection region and protection for feed line region: the bus-bar room of the bus-bar room of step-down switch cubicle, feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, mother cabinet belongs to bus protection region, bus protection probe is installed respectively, the main control unit directly or described in being accessed by arc light unit; Cable vault and the switch gear room of the cable vault of feeder line middle-placed switch cabinet and switch gear room, mother cabinet belong to protection for feed line region, install protection for feed line probe respectively, the arc light relay described in access.
The method of the quick protection of described internal faults of switch cabinet 100%, described protection for feed line method refers to installs an arc light relay at each feeder line middle-placed switch cabinet, and this arc light relay gathers the arc probe signal of this cabinet cable vault, switch indoor location; This arc light relay associates inlet wire current on the bus of this feeder line place and mother electric current, receives the correlated current action message from main control unit; When arc probe action and associated electric current action time, the arc light actuating of relay exports, this feeder switch of tripping, simultaneously sends actuating signal to main control unit; If main control unit detects the arc light actuating of relay of feeder line middle-placed switch cabinet, and exist at time delay internal fault continuing current flow of adjusting, then main control unit action outlet, tripping fault current place service entrance switch or bus connection switch.
The method that described internal faults of switch cabinet 100% is protected fast, described bus bar protecting method refers to that the arc probe of installing at bus-bar room is associated to electric power incoming line electric current and the bus connection switch electric current of this section of bus direct correlation; When the arc probe action of bus-bar room, and associated electric power incoming line electric current or the action of bus connection switch electric current, main control unit action exports, the electric power incoming line switch associated by tripping or bus connection switch.
The method that described internal faults of switch cabinet 100% is protected fast, described mother guard method installs an arc light relay in mother cabinet, gathers the arc probe signal of this cabinet switch gear room, cable indoor location; This arc light relay association mother both sides electric power incoming line electric current, receives the correlated current action message from main control unit; When the arc probe action of arc light relay and associated inlet wire current action time, the arc light actuating of relay export, tripping bus connection switch, and give main control unit sending action signal; If main control unit detects the arc light actuating of relay of mother cabinet, and fault current still exists after time delay of adjusting, then main control unit action outlet, tripping fault current place service entrance switch; The arc probe that bus connection switch two side bus is installed is associated to bus connection switch electric current, when the action of dependence arc light probe and the action of bus connection switch electric current time, main control unit action export, tripping bus connection switch.
The method that described internal faults of switch cabinet 100% is protected fast, described incoming relay-protection method is that the arc probe of installing at incoming line cabinet is associated to this electric power incoming line electric current; When arc probe action and the action of this electric power incoming line electric current time, main control unit action exports, and jumps electric power incoming line switch, and starts corresponding failure protection; If after failure protection starts, still existed at time delay internal fault electric current of adjusting, then failure protection action outlet, the corresponding step down side switch of tripping.
Beneficial effect:
Produce electric arc feature when the present invention breaks down according to inside switch cabinet, form arc light protecting system in conjunction with power supply point current break criterion during fault.Adopt subregion to detect arc optical signal technology, the arc light relay configured by feeder unit and the cooperation of arc protection main control unit realize selectivity tripping operation during diverse location generation arc fault, avoid the extension of power failure range.
accompanying drawing illustrates:
Fig. 1 is probe scheme of installation of the present invention.
Fig. 2 is system layout of the present invention.
embodiment:
In order to elaborate technology contents of the present invention, especially exemplified by following examples.Especially, the system configuration of following examples is only a kind of way of realization based on inventive concept, as long as in fact the version of any one switch cubicle can method according to the invention, equally can realize the present invention.
Embodiment 1:
As shown in Figure 1: internal faults of switch cabinet 100% rapid protection system of the present invention, comprise main control unit, arc light relay, current unit and arc probe, described arc probe is divided into bus protection to pop one's head in and protection for feed line probe, described bus protection is popped one's head in comprise and is arranged on step-down switch cubicle respectively, the bus-bar room of feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, one group of bus protection probe of the bus-bar room of mother cabinet, described protection for feed line probe comprises the protection for feed line probe of cable vault and the switch gear room being arranged on feeder line middle-placed switch cabinet respectively and is arranged on the cable vault of mother cabinet and the protection for feed line probe of switch gear room respectively, main control unit described in described protection for feed line probe is connected by arc light relay.
Described internal faults of switch cabinet 100% rapid protection system, the described main control unit of bus protection probe directly or described in being accessed by arc light unit.
Embodiment 2:
Above-mentioned protection system is utilized to carry out the method for the quick protection of internal faults of switch cabinet 100%; the method comprises: arc optical signal is detected in subregion; then adopt selective protection method, described selective protection method comprises protection for feed line method, bus bar protecting method, mother guard method and incoming relay-protection method.
The method that described internal faults of switch cabinet 100% is protected fast, described subregion is detected arc optical signal and is referred to inside switch cabinet is divided into bus protection region and protection for feed line region: the bus-bar room of the bus-bar room of step-down switch cubicle, feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, mother cabinet belongs to bus protection region, bus protection probe is installed respectively, the main control unit directly or described in being accessed by arc light unit; Cable vault and the switch gear room of the cable vault of feeder line middle-placed switch cabinet and switch gear room, mother cabinet belong to protection for feed line region, install protection for feed line probe respectively, the arc light relay described in access.
The method of the quick protection of described internal faults of switch cabinet 100%, described protection for feed line method refers to installs an arc light relay at each feeder line middle-placed switch cabinet, and this arc light relay gathers the arc probe signal of this cabinet cable vault, switch indoor location; This arc light relay associates inlet wire current on the bus of this feeder line place and mother electric current, receives the correlated current action message from main control unit; When arc probe action and associated electric current action time, the arc light actuating of relay exports, this feeder switch of tripping, simultaneously sends actuating signal to main control unit; If main control unit detects the arc light actuating of relay of feeder line middle-placed switch cabinet, and exist at time delay internal fault continuing current flow of adjusting, then main control unit action outlet, tripping fault current place service entrance switch or bus connection switch.
The method that described internal faults of switch cabinet 100% is protected fast, described bus bar protecting method refers to that the arc probe of installing at bus-bar room is associated to electric power incoming line electric current and the bus connection switch electric current of this section of bus direct correlation; When the arc probe action of bus-bar room, and associated electric power incoming line electric current or the action of bus connection switch electric current, main control unit action exports, the electric power incoming line switch associated by tripping or bus connection switch.
The method that described internal faults of switch cabinet 100% is protected fast, described mother guard method installs an arc light relay in mother cabinet, gathers the arc probe signal of this cabinet switch gear room, cable indoor location; This arc light relay association mother both sides electric power incoming line electric current, receives the correlated current action message from main control unit; When the arc probe action of arc light relay and associated inlet wire current action time, the arc light actuating of relay export, tripping bus connection switch, and give main control unit sending action signal; If main control unit detects the arc light actuating of relay of mother cabinet, and fault current still exists after time delay of adjusting, then main control unit action outlet, tripping fault current place service entrance switch; The arc probe that bus connection switch two side bus is installed is associated to bus connection switch electric current, when the action of dependence arc light probe and the action of bus connection switch electric current time, main control unit action export, tripping bus connection switch.
The method that described internal faults of switch cabinet 100% is protected fast, described incoming relay-protection method is that the arc probe of installing at incoming line cabinet is associated to this electric power incoming line electric current; When arc probe action and the action of this electric power incoming line electric current time, main control unit action exports, and jumps electric power incoming line switch, and starts corresponding failure protection; If after failure protection starts, still existed at time delay internal fault electric current of adjusting, then failure protection action outlet, the corresponding step down side switch of tripping.
Fig. 2 is typical arc light protecting system allocation plan.As shown in Figure 2, due to symmetrical, be described further for I mother below.
Arc optical signal is detected in subregion, and as shown in Figure 2, probe 1, probe 2 belong to bus protection category, access main control unit.Probe 3, probe 4 belong to protection for feed line category, access corresponding feeder line arc light relay ArcRelay2 and ArcRelay1 respectively.
The arc light relay configured by feeder unit and the cooperation of arc protection main control unit realize selectivity tripping operation during diverse location generation arc fault.Suppose I mother power supply, mother co-bit.When in system, each point breaks down, this arc light protecting system action behavior is as follows:
1. F1 fault below feeder switch, 4 actions of popping one's head in, the female inlet wire current action of I, arc light relay ArcRelay1 action exports, tripping switch BRK4, and fault is cut;
2. F2 fault above feeder switch, 4 actions of popping one's head in, the female inlet wire current action of I, arc light relay ArcRelay1 action exports, and tripping switch BRK4, fault still exists.Main control unit receives arc light relay ArcRelay1 actuating signal, and judge the female inlet wire current perseveration of I, time delay tripping switch BRK2, fault is cut;
3. F3 fault on bus, 2 actions of popping one's head in, the female inlet wire current action of I, main control unit tripping switch BRK2, fault is cut;
4. bus connection switch is away from mains side F4 fault, 3 actions of popping one's head in, the female inlet wire current action of I, and arc light relay ArcRelay2 action exports, tripping switch BRK3, and fault is cut;
5. bus connection switch nearly mains side F5 fault, 3 actions of popping one's head in, the female inlet wire current action of I, arc light relay ArcRelay2 action exports, tripping switch BRK3, and fault still exists; Main control unit receives the actuating signal of arc light relay ArcRelay2, and judge the female inlet wire current perseveration of I, main control unit deferred action exports, tripping switch BRK2, and fault is cut;
6. F6 fault below incoming line cabinet switch, 1 action of popping one's head in, the female inlet wire current action of I, main control unit action exports, tripping switch BRK2, and fault is cut;
7. F7 fault above incoming line cabinet switch, 1 action of popping one's head in, the female inlet wire current action of I, main control unit action exports, tripping switch BRK2, and fault still exists; Failure protection judges the female inlet wire current perseveration of I, and the deferred action of main control unit failure protection exports, tripping switch BRK1, and fault is cut;
8. F8 fault on bus, 5 actions of popping one's head in, the action of bus connection switch electric current, main control unit action exports, tripping switch BRK3, and fault is cut;
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises and is equal to by above technical characteristic the technical scheme that replacement forms.Unaccomplished matter of the present invention, belongs to the common practise of those skilled in the art.
Claims (5)
1. the method for carrying out internal faults of switch cabinet 100% and protecting fast, it is characterized in that: utilize internal faults of switch cabinet 100% rapid protection system to carry out internal faults of switch cabinet 100% and protect fast, described internal faults of switch cabinet 100% rapid protection system comprises main control unit, arc light relay, current unit and arc probe, described arc probe is divided into bus protection to pop one's head in and protection for feed line probe, described bus protection is popped one's head in comprise and is arranged on step-down switch cubicle respectively, the bus-bar room of feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, one group of bus protection probe of the bus-bar room of mother cabinet, described protection for feed line probe comprises the protection for feed line probe of cable vault and the switch gear room being arranged on feeder line middle-placed switch cabinet respectively and is arranged on the cable vault of mother cabinet and the protection for feed line probe of switch gear room respectively, main control unit described in described protection for feed line probe is connected by arc light relay, the described main control unit of bus protection probe directly or described in being accessed by arc light unit,
Described method comprises: arc optical signal is detected in subregion, and then adopt selective protection method, described selective protection method comprises protection for feed line method, bus bar protecting method, mother guard method and incoming relay-protection method.
2. the method for the quick protection of internal faults of switch cabinet 100% according to claim 1, it is characterized in that: described subregion is detected arc optical signal and referred to inside switch cabinet is divided into bus protection region and protection for feed line region: the bus-bar room of the bus-bar room of step-down switch cubicle, feeder line middle-placed switch cabinet, PT cabinet, isolation cabinet, incoming line cabinet, mother cabinet belongs to bus protection region, bus protection probe is installed respectively, the main control unit directly or described in being accessed by arc light unit; Cable vault and the switch gear room of the cable vault of feeder line middle-placed switch cabinet and switch gear room, mother cabinet belong to protection for feed line region, install protection for feed line probe respectively, the arc light relay described in access.
3. the method for the quick protection of internal faults of switch cabinet 100% according to claim 1 and 2, it is characterized in that: described protection for feed line method refers to installs an arc light relay at each feeder line middle-placed switch cabinet, and this arc light relay gathers the arc probe signal of this cabinet cable vault, switch indoor location; This arc light relay associates inlet wire current on the bus of this feeder line place and mother electric current, receives the correlated current action message from main control unit; When arc probe action and associated inlet wire current or the action of mother electric current time, the arc light actuating of relay exports, this feeder switch of tripping, simultaneously sends actuating signal to main control unit; If main control unit detects the arc light actuating of relay of feeder line middle-placed switch cabinet, and exist at time delay internal fault continuing current flow of adjusting, then main control unit action outlet, tripping fault current place service entrance switch or bus connection switch.
4. the method for the quick protection of internal faults of switch cabinet 100% according to claim 1 and 2, it is characterized in that: described mother guard method installs an arc light relay in mother cabinet, gathers the arc probe signal of this cabinet switch gear room, cable indoor location; This arc light relay association mother both sides electric power incoming line electric current, receives the correlated current action message from main control unit; When the arc probe action of arc light relay and associated mother both sides electric power incoming line electric current action time, the arc light actuating of relay exports, tripping bus connection switch, and gives main control unit sending action signal; If main control unit detects the arc light actuating of relay of mother cabinet, and fault current still exists after time delay of adjusting, then main control unit action outlet, tripping fault current place service entrance switch; The arc probe that bus connection switch two side bus is installed is associated to bus connection switch electric current, when the arc probe action be associated and the action of bus connection switch electric current time, main control unit action export, tripping bus connection switch.
5. the method for the quick protection of internal faults of switch cabinet 100% according to claim 1 and 2, is characterized in that: described incoming relay-protection method is that the arc probe of installing at incoming line cabinet is associated to this electric power incoming line electric current; When arc probe action and the action of this electric power incoming line electric current time, main control unit action exports, and jumps electric power incoming line switch, and starts corresponding failure protection; If after failure protection starts, still existed at time delay internal fault electric current of adjusting, then failure protection action outlet, the corresponding step down side switch of tripping.
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| CN104052158A (en) * | 2014-06-23 | 2014-09-17 | 南京南瑞继保电气有限公司 | Relay protection method and device for dead zone faults in switch cabinet |
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| CN105977927B (en) * | 2016-07-05 | 2024-02-23 | 国家电网公司 | Arc light protection system and method with selective tripping function |
| CN109038472A (en) * | 2018-08-10 | 2018-12-18 | 江苏南能电气有限公司 | A kind of photovoltaic box type transformer arc light protecting device |
| CN109066601A (en) * | 2018-08-24 | 2018-12-21 | 南京南瑞继保电气有限公司 | A kind of middle-low voltage switch cabinet arc light protection method and system and arc light acquisition unit |
| CN109802369A (en) * | 2019-01-24 | 2019-05-24 | 中广核研究院有限公司 | A kind of atomic-powered ship intermediate voltage electric power system |
| CN118074070B (en) * | 2024-04-25 | 2024-06-28 | 山东云开电力有限公司 | Power switch cabinet detection system based on electric change |
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Denomination of invention: 100% Fast Protection System and Protection Method for Internal Faults of Switchgear Effective date of registration: 20190717 Granted publication date: 20151223 Pledgee: Nanjing Bank Co.,Ltd. Nanjing North Branch Pledgor: Nanjing Hongyi Electrical Automation Co.,Ltd. Registration number: 2019320000333 |
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