CN202564929U - 110 kV parallel double-loop operation line for rapid disconnection - Google Patents
110 kV parallel double-loop operation line for rapid disconnection Download PDFInfo
- Publication number
- CN202564929U CN202564929U CN2011205260026U CN201120526002U CN202564929U CN 202564929 U CN202564929 U CN 202564929U CN 2011205260026 U CN2011205260026 U CN 2011205260026U CN 201120526002 U CN201120526002 U CN 201120526002U CN 202564929 U CN202564929 U CN 202564929U
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- transmission line
- transformer station
- circuit breaker
- quick
- side transformer
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Abstract
The utility model relates to the field of an electric power equipment early warning technology, and discloses a 110 kV parallel double-loop operation line for rapid disconnection. The 110 kV parallel double-loop operation line comprises a power supply side transformer station A, a load side transformer station B, a power transmission line L1, a power transmission line L2, and protection devices configured by a breaker. The power transmission line L1 and the power transmission line L2 are respectively connected with the power supply side transformer station A and the load side transformer station B via the protection devices configured by the breaker and connected on two ends. The 110 kV parallel double-loop operation line is capable of realizing rapid disconnection and selection simultaneously, enables losses caused by refusal of protection disconnection and misoperation to be minimized, and is convenient for handling accidents.
Description
Technical field
The utility model relates to power equipment early warning technology field, relates in particular to the two side by side row line of backhauling of 110kV that a kind of quick-action is selected.
Background technology
At present, for improving power supply reliability, the two side by side row line of backhauling of 110kV are more and more.Because a lot of two side by side row line of backhauling of many-sided effects limit such as investment do not dispose the protection of quick-action completely; The calculation of complex of adjusting and difficult the cooperation; Exist and be unworthy of chalaza, cause protection malfunction, tripping, be not easy to the easy-to-search fault point like this; The time lengthening that causes power failure and power failure enlarged areas bring very big hidden danger for the safe and stable operation of electrical network.The annual many power failures that therefore cause have not only influenced power supply quality, also bring serious economy loss.
Summary of the invention
For solving the problems of the technologies described above; The two side by side row line of backhauling of the 110kV that the utility model provides a kind of quick-action to select; Can realize taking into account quick-action property and the two side by side working lines that converge of 110kV optionally, reduce the protection loss that tripping, malfunction brought, be convenient to accident treatment.
In order to realize the foregoing invention purpose, the utility model adopts technical scheme following:
The two side by side row line of backhauling of the 110kV that a kind of quick-action is selected; Comprise: the protective device of the A of mains side transformer station, the B of load side transformer station, transmission line L1, transmission line L2, circuit breaker configuration, protective device and the A of mains side transformer station, the B of load side transformer station that the circuit breaker that said transmission line L1, transmission line L2 connect through two ends respectively disposes are connected to form.
The two side by side row line of backhauling of the 110kV that a kind of quick-action is selected, the protective device of said circuit breaker configuration are electrically connected by data acquisition system device, micromachine system device, human-computer interface device, touch button device, switching value input unit, printer LCD device, switching value output driving circuit device, relay-set to be formed.
The two side by side row line of backhauling of the 110kV that a kind of quick-action is selected, the protective device two ends power transmission line of the circuit breaker that links to each other with the B of the load side transformer station configuration on the said transmission line L1 is set to the protection range apart from the II section, and protection range is a red marker.
The two side by side row line of backhauling of the 110kV that a kind of quick-action is selected, the protective device two ends power transmission line of the circuit breaker that links to each other with the A of the mains side transformer station configuration on the said transmission line L2 is set to the protection range apart from the I section, and protection range is blue sign.
Owing to adopt aforesaid technical scheme, the utlity model has following superiority:
Two side by side row line and the methods of backhauling of the 110kV that a kind of quick-action is selected; The main employing held guard space I section reliably protecting completely; Realization takes into account quick-action property and the two side by side working lines that converge of 110kV optionally, can reduce the protection loss that tripping, malfunction brought, and is convenient to accident treatment.
Description of drawings
Fig. 1 takes into account quick-action property and double loop working line sketch optionally arranged side by side;
Among the figure: A: mains side transformer station, B: load side transformer station, L1: transmission line 1; L2: transmission line 2; The protective device 1-4 of each circuit breaker configuration, protective device 1 is a red marker apart from the protection range of II section, protective device 4 is blue sign apart from the protection range of I section;
Fig. 2 is that protective device constitutes block diagram;
Among the figure: A: data acquisition system device, B: micromachine system device, C: human-computer interface device, D: touch button device, E: switching value input unit, F: printer or LCD, G: switching value output driving circuit device, H: relay-set.
Fig. 3 is the protective device logical circuit block diagram of distance segment circuit breaker configuration;
Among the figure: 0: start module, 1: apart from I section impedance module, 2: apart from II section impedance module, 3: apart from III section impedance module, 4: apart from II section time module, 5: apart from III section time module, 6: outlet protection action module.
Embodiment
Like Fig. 1,2, shown in 3; The two side by side row line of backhauling of the 110kV that a kind of quick-action is selected; Comprise: the protective device of the A of mains side transformer station, the B of load side transformer station, transmission line L1, transmission line L2, circuit breaker configuration, protective device and the A of mains side transformer station, the B of load side transformer station that the circuit breaker that said transmission line L1, transmission line L2 connect through two ends respectively disposes are connected to form.
The protective device of said circuit breaker configuration is electrically connected by data acquisition system device, micromachine system device, human-computer interface device, touch button device, switching value input unit, printer LCD device, switching value output driving circuit device, switching value output driving circuit device, relay-set to be formed.The protective device two ends power transmission line of the circuit breaker that links to each other with the B of the load side transformer station configuration on the said transmission line L1 is set to the protection range apart from the II section, and protection range is a red marker.
The protective device two ends power transmission line of the circuit breaker that links to each other with the A of the mains side transformer station configuration on the said transmission line L2 is set to the protection range apart from the I section, and protection range is blue sign.
For addressing the above problem, utilize and held guard space I section reliably protecting completely, realized taking into account quick-action property and two side by side working lines that converge of 110kV optionally, reduce the protection loss that tripping, malfunction brought, be convenient to accident treatment.
The two side by side methods of backhauling row line quick-action selection of a kind of 110kV adopt apart from I segment protect reliably protecting total track length, and its step is following:
1) there is enough sensitivity to adjust by this line end fault
ZDZⅡ≤KlmZ1
Z1 is this circuit positive sequence impedance
Klm=1.3-1.5
2) cooperate apart from the II section with adjacent lines
ZDZⅡ≤KkZ1+KkKzZ'DZⅡ
Z1 is this circuit positive sequence impedance
The Z'DZ II is that adjacent lines is apart from II section action impedance
Kz increases coefficient for helping, and selects for use positive sequence to help to increase coefficient and zero sequence helps the smaller value that increases in the coefficient
Kk=0.7-0.8
3) check and the cooperating of other side bus fault of transformer
ZDZⅡ≤KkZ1+KkKzZ'T
Z'T is an adjacent transformers parallel connection positive sequence equivalent impedance
Kz increases coefficient for helping, and selects for use positive sequence to help to increase coefficient and zero sequence helps the smaller value that increases in the coefficient, for other neutral ground side of transformer, simplifies also desirable Kk=1 when calculating
Kk=0.7-0.8
When breaking down near A transformer station place on the L2 circuit; BH4 can excise fault current by 0s apart from the I segment protect; Though BH1 also can experience fault current apart from the II segment protect and since apart from operate time of II segment protect greater than 0s, so; BH1 apart from II Duan Buhui malfunction, thereby satisfied quick-action property and optionally requirement.
Claims (1)
1. arranged side by side couple of the 110kV of a quick-action selection backhauls row line; It is characterized in that: comprising: the protective device of the A of mains side transformer station, the B of load side transformer station, transmission line L1, transmission line L2, circuit breaker configuration, protective device and the A of mains side transformer station, the B of load side transformer station that the circuit breaker that said transmission line L1, transmission line L2 connect through two ends respectively disposes are connected to form.
2, the 110kV of a kind of quick-action selection according to claim 1 is two side by side backhauls row line, it is characterized in that: the protective device of said circuit breaker configuration is electrically connected by data acquisition system device, micromachine system device, human-computer interface device, touch button device, switching value input unit, printer LCD device, switching value output driving circuit device, relay-set to be formed.
3, the two side by side row line of backhauling of the 110kV of a kind of quick-action selection according to claim 1; It is characterized in that: the protective device two ends power transmission line of the circuit breaker that links to each other with the B of the load side transformer station configuration on the said transmission line L1 is set to the protection range apart from the II section, and protection range is a red marker.
4, the two side by side row line of backhauling of the 110kV of a kind of quick-action selection according to claim 1; It is characterized in that: the protective device two ends power transmission line of the circuit breaker that links to each other with the A of the mains side transformer station configuration on the said transmission line L2 is set to the protection range apart from the I section, and protection range is blue sign.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205260026U CN202564929U (en) | 2011-12-15 | 2011-12-15 | 110 kV parallel double-loop operation line for rapid disconnection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205260026U CN202564929U (en) | 2011-12-15 | 2011-12-15 | 110 kV parallel double-loop operation line for rapid disconnection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564929U true CN202564929U (en) | 2012-11-28 |
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ID=47214544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205260026U Expired - Fee Related CN202564929U (en) | 2011-12-15 | 2011-12-15 | 110 kV parallel double-loop operation line for rapid disconnection |
Country Status (1)
| Country | Link |
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| CN (1) | CN202564929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437557A (en) * | 2011-12-15 | 2012-05-02 | 河南省电力公司洛阳供电公司 | Quick-acting and selective parallel double-circuit running lines (110kV) and quick-action and selection method thereof |
-
2011
- 2011-12-15 CN CN2011205260026U patent/CN202564929U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437557A (en) * | 2011-12-15 | 2012-05-02 | 河南省电力公司洛阳供电公司 | Quick-acting and selective parallel double-circuit running lines (110kV) and quick-action and selection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |