CN107782989A - The quick joint debugging method of testing of end optical difference protection passage of circuit three - Google Patents
The quick joint debugging method of testing of end optical difference protection passage of circuit three Download PDFInfo
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- CN107782989A CN107782989A CN201610726630.6A CN201610726630A CN107782989A CN 107782989 A CN107782989 A CN 107782989A CN 201610726630 A CN201610726630 A CN 201610726630A CN 107782989 A CN107782989 A CN 107782989A
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- offside
- channel
- optical
- phase
- power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to a kind of quick joint debugging method of testing of end optical difference protection passage of circuit three, three ends are respectively two optical-fibre channels M, N and a 110KV circuit T；Step 1：M~N channel optical fiber differential protective joint debugging；Cable connection inside and outside drawing and screen is checked, prevents from touching by mistake, and record data；Optical-fibre channel performance test；Photophore power test；Optical receiver sensitivity is tested；Light receiving power is tested；Channel sample is tested；Differential protection tripping operation test；Transfer trip is tested：The step of step 2 M~T passages, three N~M passages, four N~T passages, five T~N channel, six T~M passages and method are identical with step 1.Power supply administration's power off time is saved in the quick joint debugging of this method, substantially reduces the engineering time of photovoltaic generation engineering, and favourable guarantee is provided for smoothly operation.
Description
Technical field
The present invention relates to a kind of joint debugging method of testing of optical difference protection passage, the specifically end optical difference protection of circuit three leads to
The quick joint debugging method of testing in road.
Background technology
It is typically all now both ends optical differential at present, the general principle of optical fiber differential current protection is led to by optical fiber
Road, the sampled data per phase current is transmitted to offside in real time, while receive the current sampling data of offside, both sides Sustainable use
Local and offside current data split-phase after synchronization process carries out spill current calculating.
The content of the invention
A kind of it is contemplated that the defects of overcoming prior art, there is provided quick joint debugging test of the end optical difference protection passage of circuit three
Method, efficiently, relay protection function is fast and accurately realized, save power supply administration and engineering project completion date, realize earlier
Project, which is gone into operation, plans.
In order to solve the above-mentioned technical problem, the present invention is realized in：
A kind of quick joint debugging method of testing of end optical difference protection passage of circuit three, it is characterised in that：Three ends are respectively that two optical fiber lead to
Road M, N and a 110KV circuit T；Comprise the following steps：
Step 1：M~N channel optical fiber differential protective joint debugging；
（1）Cable connection inside and outside drawing and screen is checked, prevents from touching by mistake, and record data；
（2）Optical-fibre channel performance test；
1）Photophore power test；
With light power meter and the photophore power of tail optical fiber measurement protection device, it is consistent with the nominal value on channel card, error
For ± 3 dBm；
2）Optical receiver sensitivity is tested；
Select Optical attenuator optical wavelength, its consistent wavelength with protection device, slowly adjust Optical attenuator attenuation, make its from
The bit error rate that 0 dBm is gradually increased to device occurs and channel abnormal alarm relay acts, and then again adjusts back Optical attenuator
Just recover to channel abnormal alarm；Receiving sensitivity is no more than 3dBm with nominal value error；
3）Light receiving power is tested；
With light power meter inspection by offside come optical fiber received power, verify take-up angle, ensure received power nargin 6dB with
On；Can not occur overloading or the situation less than minimum receiving sensitivity；
The receiving sensitivity of power margin=received power one
（3）Channel sample is tested；
Confirm passage both sides CT no-load voltage ratio sizes, CT polarity is pointed to, and is added three-phase symmetrical rated current in this side current loop, is checked
This side current sampling data is correct；When offside adds three-phase symmetrical rated current in current loop, offside electricity in this side device
It is correct to flow sampled value；
A phase 1A, B phase 2A, C phase 3A unbalanced three-phase currents are separately added into this side current loop, check this side current sampling data
Correct and nuclear phase；When offside adds A phase 1A, B phase 2A, C phase 3A unbalanced three-phase currents in current loop, in this side device
The correct simultaneously nuclear phase of offside current sampling data；
（4）Differential protection tripping operation test：Both sides breaker closes position, differential protection input；
（5）Transfer trip is tested：
1）This side sends remote jump and ordered, and offside, which is received, far jumps order：Correctly；
2) offside sends remote jump and ordered, and this side, which is received, far jumps order：Correctly；
3) when remote jump is " 0 " by the control of this side, offside breaker closes position, and differential no startup is opened fashionable；This side hair is remote to jump order,
Offside breaker actuation, vice versa；
4) when remote jump is " 1 " by the control of this side, offside breaker closes position, and differential no startup is opened fashionable；This side hair is remote to jump order,
Offside breaker is failure to actuate；Differential when having startup when offside breaker closes position, this side hair is remote to jump order, offside breaker actuation,
Vice versa；
Step 2: M~T channel fiber differential protection joint debuggings, step and method are identical with step 1；
Step 3: N~M channel fiber differential protection joint debuggings, step and method are identical with step 1；
Step 4: N~T channel fiber differential protection joint debuggings, step and method are identical with step 1；
Step 5: T~N channel optical fiber differential protective joint debugging, step and method are identical with step 1；
Step 6: T~M channel fiber differential protection joint debuggings, step and method are identical with step 1.
The described quick joint debugging method of testing of end optical difference protection passage of circuit three, it is characterised in that：Photophore in step 1
During power test, the optical wavelength of the light power meter of selection should be with the consistent wavelength of device；The special tail optical fiber first provided with producer enters
Row test；It should check whether tail wires of fiber optics cleans before then trying；Reliable contacts are answered in connector and the connection of protection device and light power meter；
The photophore power measured should be the dBm sums of attenuation 0.3 of measured value and 2 connectors.
The described quick joint debugging method of testing of end optical difference protection passage of circuit three, it is characterised in that：Light-receiving in step 1
Received power nargin is 10 dB in power test.
The beneficial effects of the invention are as follows：This time project is that two photovoltaic plants access a 110KV transmission line of electricity simultaneously, therefore
And route protection need to use three end optical fiber differential protectives, its property special procured is just it is clear that two optical-fibre channels of the present apparatus（A leads to
Road and channel B）Using completely self-contained working method, it is respectively used to interconnect with the device of other both sides, and respectively by " A channel
Input " and " channel B input " control.In order to meet field demand, it is allowed to which a certain passage exits protection and continued to run with；When a certain logical
When road exits, the communications status of the passage is not reexamined, it is differential that protection becomes both ends.Both ends are differential and three ends are differential patrols
Collect unanimously, the of ac of the passage simply exited is changed into " 0 " and participates in calculating.Best way using the present invention is three end joint debuggings,
Because two photovoltaic plants share a 110KV transmission line of electricity, greatly save engineering outside line transmission line of electricity engineering cost and
Construction cost, power supply administration's power off time is saved using the quick joint debugging of this method, when substantially reducing the construction of photovoltaic generation engineering
Between, provide favourable guarantee for smoothly operation.
Brief description of the drawings
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of the present invention.
Embodiment
As shown in Figure 1：A kind of quick joint debugging method of testing of end optical difference protection passage of circuit three, three ends are respectively two optical fiber
Passage M, N and a 110KV circuit T；PRS-753DT is the model of protective relaying device in figure；Comprise the following steps：
Step 1：M~N channel optical fiber differential protective joint debugging；
（1）Cable connection inside and outside drawing and screen is checked, prevents from touching by mistake, and record data；It is recommended that record form is as follows：
| Sequence number | Access/dismounting | Executor | Number in loop | Recover | Executor |
| 1 | Optical fiber terminal box B11 | N sides to M sides optical difference protection | |||
| 2 | Optical fiber terminal box B12 | N sides to M sides optical difference protection | |||
| 3 | Optical fiber terminal box D11 | N sides to M sides optical difference protection | |||
| 4 | Optical fiber terminal box D12 | N sides to M sides optical difference protection | |||
| 5 | Alternating current terminal block 1ID1 | N sidelight differential protecting equipment current terminals number | |||
| 6 | Alternating current terminal block 1ID2 | N sidelight differential protecting equipment current terminals number | |||
| 7 | Alternating current terminal block 1ID3 | N sidelight differential protecting equipment current terminals number | |||
| 8 | Alternating current terminal block 1ID4 | N sidelight differential protecting equipment current terminals number |
（2）Optical-fibre channel performance test；
1）Photophore power test；
With light power meter and the photophore power of tail optical fiber measurement protection device, it is consistent with the nominal value on channel card, error
For ± 3 dBm；
During photophore power test, the optical wavelength of the light power meter of selection should be with the consistent wavelength of device；First provided with producer
Special tail optical fiber is tested；It should check whether tail wires of fiber optics cleans before then trying；The connection of connector and protection device and light power meter
Answer reliable contacts；The photophore power measured should be the dBm sums of attenuation 0.3 of measured value and 2 connectors；
2）Optical receiver sensitivity is tested；
Select Optical attenuator optical wavelength, its consistent wavelength with protection device, slowly adjust Optical attenuator attenuation, make its from
The bit error rate that 0 dBm is gradually increased to device occurs and channel abnormal alarm relay acts, and then again adjusts back Optical attenuator
Just recover to channel abnormal alarm；Receiving sensitivity is no more than 3dBm with nominal value error；
3）Light receiving power is tested；
With light power meter inspection by offside come optical fiber received power, verify take-up angle, ensure received power nargin 6dB with
On, preferably 10 dB；Can not occur overloading or the situation less than minimum receiving sensitivity；
The receiving sensitivity of power margin=received power one
（3）Channel sample is tested；
Confirm passage both sides CT（Current transformer）No-load voltage ratio size, CT polarity are pointed to, and three-phase symmetrical is added in this side current loop
Rated current, check that this side current sampling data is correct；When offside adds three-phase symmetrical rated current in current loop, this side
Offside current sampling data is correct in device, and records data above, it is proposed that record form is as follows：
A phase 1A, B phase 2A, C phase 3A unbalanced three-phase currents are separately added into this side current loop, check this side current sampling data
Correct and nuclear phase；When offside adds A phase 1A, B phase 2A, C phase 3A unbalanced three-phase currents in current loop, in this side device
The correct simultaneously nuclear phase, and record data of offside current sampling data, it is proposed that form is as follows：
（4）Differential protection tripping operation test：Both sides breaker closes position, differential protection input, can refer to following table：
（5）Transfer trip is tested：
1）This side sends remote jump and ordered, and offside, which is received, far jumps order：Correctly；
2) offside sends remote jump and ordered, and this side, which is received, far jumps order：Correctly；
3) when remote jump is " 0 " by the control of this side, offside breaker closes position, and differential no startup is opened fashionable；This side hair is remote to jump order,
Offside breaker actuation, vice versa；
4) when remote jump is " 1 " by the control of this side, offside breaker closes position, and differential no startup is opened fashionable；This side hair is remote to jump order,
Offside breaker is failure to actuate；Differential when having startup when offside breaker closes position, this side hair is remote to jump order, offside breaker actuation,
Vice versa；
Step 2: M~T channel fiber differential protection joint debuggings, step and method are identical with step 1；
Step 3: N~M channel fiber differential protection joint debuggings, step and method are identical with step 1；
Step 4: N~T channel fiber differential protection joint debuggings, step and method are identical with step 1；
Step 5: T~N channel optical fiber differential protective joint debugging, step and method are identical with step 1；
Step 6: T~M channel fiber differential protection joint debuggings, step and method are identical with step 1.
Claims (3)
- A kind of 1. quick joint debugging method of testing of end optical difference protection passage of circuit three, it is characterised in that：Three ends are respectively two optical fiber Passage M, N and a 110KV circuit T；Comprise the following steps：Step 1：M~N channel optical fiber differential protective joint debugging；（1）Cable connection inside and outside drawing and screen is checked, prevents from touching by mistake, and record data；（2）Optical-fibre channel performance test；1）Photophore power test；With light power meter and the photophore power of tail optical fiber measurement protection device, it is consistent with the nominal value on channel card, error For ± 3 dBm；2）Optical receiver sensitivity is tested；Select Optical attenuator optical wavelength, its consistent wavelength with protection device, slowly adjust Optical attenuator attenuation, make its from The bit error rate that 0 dBm is gradually increased to device occurs and channel abnormal alarm relay acts, and then again adjusts back Optical attenuator Just recover to channel abnormal alarm；Receiving sensitivity is no more than 3dBm with nominal value error；3）Light receiving power is tested；With light power meter inspection by offside come optical fiber received power, verify take-up angle, ensure received power nargin 6dB with On；Can not occur overloading or the situation less than minimum receiving sensitivity；The receiving sensitivity of power margin=received power one（3）Channel sample is tested；Confirm passage both sides CT no-load voltage ratio sizes, CT polarity is pointed to, and is added three-phase symmetrical rated current in this side current loop, is checked This side current sampling data is correct；When offside adds three-phase symmetrical rated current in current loop, offside electricity in this side device It is correct to flow sampled value；A phase 1A, B phase 2A, C phase 3A unbalanced three-phase currents are separately added into this side current loop, check this side current sampling data Correct and nuclear phase；When offside adds A phase 1A, B phase 2A, C phase 3A unbalanced three-phase currents in current loop, in this side device The correct simultaneously nuclear phase of offside current sampling data；（4）Differential protection tripping operation test：Both sides breaker closes position, differential protection input；（5）Transfer trip is tested：1）This side sends remote jump and ordered, and offside, which is received, far jumps order：Correctly；2) offside sends remote jump and ordered, and this side, which is received, far jumps order：Correctly；3) when remote jump is " 0 " by the control of this side, offside breaker closes position, and differential no startup is opened fashionable；This side hair is remote to jump order, Offside breaker actuation, vice versa；4) when remote jump is " 1 " by the control of this side, offside breaker closes position, and differential no startup is opened fashionable；This side hair is remote to jump order, Offside breaker is failure to actuate；Differential when having startup when offside breaker closes position, this side hair is remote to jump order, offside breaker actuation, Vice versa；Step 2: M~T channel fiber differential protection joint debuggings, step and method are identical with step 1；Step 3: N~M channel fiber differential protection joint debuggings, step and method are identical with step 1；Step 4: N~T channel fiber differential protection joint debuggings, step and method are identical with step 1；Step 5: T~N channel optical fiber differential protective joint debugging, step and method are identical with step 1；Step 6: T~M channel fiber differential protection joint debuggings, step and method are identical with step 1.
- 2. the quick joint debugging method of testing of end optical difference protection passage of circuit three according to claim 1, it is characterised in that：Step In one during photophore power test, the optical wavelength of the light power meter of selection should be with the consistent wavelength of device；First provided with producer Special tail optical fiber is tested；It should check whether tail wires of fiber optics cleans before then trying；The connection of connector and protection device and light power meter Answer reliable contacts；The photophore power measured should be the dBm sums of attenuation 0.3 of measured value and 2 connectors.
- 3. the quick joint debugging method of testing of end optical difference protection passage of circuit three according to claim 1, it is characterised in that：Step Received power nargin is 10 dB in light receiving power test in one.
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| CN201610726630.6A CN107782989B (en) | 2016-08-26 | 2016-08-26 | Rapid joint debugging test method for three-terminal optical difference protection channel of line |
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|---|---|---|---|
| CN201610726630.6A CN107782989B (en) | 2016-08-26 | 2016-08-26 | Rapid joint debugging test method for three-terminal optical difference protection channel of line |
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| CN107782989B CN107782989B (en) | 2020-03-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391098A (en) * | 2021-06-15 | 2021-09-14 | 贵州电网有限责任公司 | Optical difference protection coaxial cable channel control device and control method thereof |
| CN114509616A (en) * | 2021-08-26 | 2022-05-17 | 国网河北省电力有限公司石家庄供电分公司 | Method for troubleshooting power failure analysis to-home problems |
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| CN101075753A (en) * | 2007-05-18 | 2007-11-21 | 南京力导科技股份有限公司 | Method for sampling and processing transmission data with transmission line optical-fiber longitudinal difference protection |
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| CN104242261A (en) * | 2014-08-27 | 2014-12-24 | 国家电网公司 | Control method for switching on and off of differential protection function of T-joint electric transmission line |
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2016
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| CN101075753A (en) * | 2007-05-18 | 2007-11-21 | 南京力导科技股份有限公司 | Method for sampling and processing transmission data with transmission line optical-fiber longitudinal difference protection |
| CN101677183A (en) * | 2008-09-16 | 2010-03-24 | 河南省电力公司许昌供电公司 | Self-adaptive master-slave positioning method for three-terminal differential protection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391098A (en) * | 2021-06-15 | 2021-09-14 | 贵州电网有限责任公司 | Optical difference protection coaxial cable channel control device and control method thereof |
| CN114509616A (en) * | 2021-08-26 | 2022-05-17 | 国网河北省电力有限公司石家庄供电分公司 | Method for troubleshooting power failure analysis to-home problems |
| CN114509616B (en) * | 2021-08-26 | 2023-07-14 | 国网河北省电力有限公司石家庄供电分公司 | Power failure analysis household problem investigation method |
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