CN110146781A - A kind of improved method that DC field debugging instantaneously loses communication experiment - Google Patents
A kind of improved method that DC field debugging instantaneously loses communication experiment Download PDFInfo
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- CN110146781A CN110146781A CN201910378069.0A CN201910378069A CN110146781A CN 110146781 A CN110146781 A CN 110146781A CN 201910378069 A CN201910378069 A CN 201910378069A CN 110146781 A CN110146781 A CN 110146781A
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- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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Abstract
The invention discloses the improved methods that a kind of debugging of DC field instantaneously loses communication experiment, including the verification step to dc power stable operation function, dc power elevating function and direct current sequence operating function when instantaneously losing communication disturbance.Dc power stable operation function, dc power elevating function and the direct current sequence operating function of DC transmission system are verified under capable of being disturbed to communication is instantaneously lost using technical solution of the present invention, so as to verify the completeness of DC control program, guarantee DC transmission system reliability of operation.
Description
Technical field
The present invention relates to electric system DC engineering debugging technique field more particularly to a kind of instantaneous mistakes of DC field debugging
The improved method for removing communication experiment.
Background technique
Communication experiment is lost in DC engineering field adjustable, including instantaneously loses communication and permanently loses communication, wherein
It instantaneously loses communication and refers to that DC transmission system is able to maintain in the case where instantaneously losing the communication between converting plant and Inverter Station
The ability of current operating condition, usually signified current operating condition includes: dc power stable operation, i.e. direct current transmission power
It keeps stablizing；Dc power lifting process is uninterrupted, i.e. the rate of dc power lifting remains unchanged.
The existing communication experiment that instantaneously loses only considers the stability of dc power in DC transmission system operational process, straight
The continuity of power lifting and the consistency of ramp rate are flowed, fails to consider instantaneously to lose communication to direct current sequence operating function
It influences, leads to not the completeness for verifying DC control program, DC transmission system reliability of operation is not high.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing, a kind of DC field debugging is instantaneous to lose communication examination
The improved method tested, dc power stable operation function, the direct current of DC transmission system under capable of being disturbed to communication is instantaneously lost
Power elevating function and direct current sequence operating function are verified, and so as to verify the completeness of DC control program, are protected
Demonstrate,prove DC transmission system reliability of operation.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of debugging of DC field instantaneously to lose communication examination
The improved method tested, DC transmission system include converting plant and Inverter Station, and converting plant and Inverter Station include two poles, and each
It is extremely grounded, each pole connects corresponding pole Control protection system, and forming circuit is connected between converting plant and the pole of Inverter Station；
The described method includes:
Converting plant and Inverter Station cooperation unlock under bipolar Ground return mode；
Dc power initial value is preset, so that DC transmission system stable operation under the dc power initial value
First preset time period；
The communication connection between converting plant and Inverter Station is disconnected, and restores communication connection after the second preset time period, is sentenced
Disconnected dc power whether stable operation；
Dc power definite value and ramp rate are set, when dc power rises to the first default function according to the ramp rate
When rate, the communication connection between converting plant and Inverter Station is disconnected, and restores communication connection after third preset time period, judgement is straight
Flow whether power rises according to the dc power definite value and the ramp rate are stable；
Converting plant and Inverter Station cooperation locking are bipolar, after locking order issues, disconnect between converting plant and Inverter Station
Communication connection, judges whether DC transmission system is latched success, and restores communication connection after the completion of lock operation；
Converting plant and Inverter Station cooperation unlock are bipolar, after unlocking command issues, disconnect between converting plant and Inverter Station
Communication connection, judges whether DC transmission system unlocks success, and restores communication connection after the completion of unlocking operation.
Further, the dc power initial value is 500MW, and the dc power definite value is 600MW, and described first is pre-
If power is 550MW, the ramp rate is 100MW/min.
Further, first preset time period is 5 minutes, and second preset time period is 10 seconds, the third
Preset time period is 5 seconds.
Further, the method also includes:
When determining dc power stable operation, do not deal with；
When the non-stable operation of judgement dc power, check whether communication connection successfully restores, and check DC control journey
Whether sequence breaks down.
Further, the method also includes:
When determining that dc power stablizes rising according to the dc power definite value and the ramp rate, do not deal with；
When determining that dc power does not stablize rising according to the dc power definite value and the ramp rate, communication is checked
Whether connection successfully restores, and checks whether DC control program breaks down.
Further, the method also includes:
When determining that DC transmission system is latched successfully, do not deal with；
When determining that DC transmission system is non-latching successful, check whether DC control program breaks down.
Further, the method also includes:
When determining that DC transmission system unlocks successfully, do not deal with；
When determining that DC transmission system does not unlock successfully, check whether DC control program breaks down.
Compared with prior art, the embodiment of the invention provides a kind of debugging of DC field instantaneously to lose changing for communication experiment
Into method, not only remain in routine test step to dc power stable operation function and dc power elevating function instantaneous
The verifying in the case of communication disturbance is lost, is also added to direct current sequence operating function, i.e. direct current locking and unlock is instantaneously being lost
Verifying in the case of going communication to disturb, the dc power stable operation of DC transmission system under capable of being disturbed to communication is instantaneously lost
Function, dc power elevating function and direct current sequence operating function carry out comprehensive verification, so as to verify DC control journey
The completeness of sequence guarantees DC transmission system reliability of operation.
Detailed description of the invention
Fig. 1 is that one of the improved method that a kind of DC field debugging provided by the invention instantaneously loses communication experiment is preferred
The flow chart of embodiment；
Fig. 2 is a kind of circuit diagram of a preferred embodiment of DC transmission system provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all without creative efforts
Other embodiments shall fall within the protection scope of the present invention.
The embodiment of the invention provides the improved methods that a kind of debugging of DC field instantaneously loses communication experiment, referring to Fig. 1
It is shown, it is a preferred embodiment of the improved method that a kind of DC field debugging provided by the invention instantaneously loses communication experiment
Flow chart, DC transmission system includes converting plant and Inverter Station, and converting plant and Inverter Station include two poles, and it is each extremely
Ground connection, each pole connect corresponding pole Control protection system, and forming circuit is connected between converting plant and the pole of Inverter Station；It is described
Method includes step S11 to step S16:
Step S11, converting plant and Inverter Station cooperation unlock under bipolar Ground return mode；
Step S12, dc power initial value is preset, so that DC transmission system is under the dc power initial value
The first preset time period of stable operation；
Step S13, the communication connection between converting plant and Inverter Station is disconnected, and restores communication after the second preset time period
Connection, judge dc power whether stable operation；
Step S14, dc power definite value and ramp rate are set, when dc power rises to the according to the ramp rate
When one predetermined power, the communication connection between converting plant and Inverter Station is disconnected, and restore communication link after third preset time period
It connects, judges whether dc power is stablized according to the dc power definite value and the ramp rate and rise；
Step S15, converting plant and Inverter Station cooperation locking are bipolar, after locking order issues, disconnect converting plant and inversion
Communication connection between standing, judges whether DC transmission system is latched success, and restores communication connection after the completion of lock operation；
Step S16, converting plant and Inverter Station cooperation unlock are bipolar, after unlocking command issues, disconnect converting plant and inversion
Communication connection between standing, judges whether DC transmission system unlocks success, and restores communication connection after the completion of unlocking operation.
Specifically, being a kind of electricity of a preferred embodiment of DC transmission system provided by the invention as shown in connection with fig. 2
Road schematic diagram, method provided by the embodiment of the present invention are suitable for DC transmission system shown in Fig. 2, the DC transmission system packet
Converting plant 100 and Inverter Station 200 are included, converting plant 100 includes two poles, respectively pole 101 and pole 102, and Inverter Station 200 includes two
A pole, respectively pole 201 and pole 202, each pole are connected with corresponding pole Control protection system, the first end of pole 101, pole
The first end of 102 first end, the first end of pole 201 and pole 202 is grounded by ground electrode circuit, and the second end of pole 101 is logical
It crosses resistance to connect with the second end of pole 201, the second end of pole 102 is connected by the second end of resistance pole 202, so that converting plant
Forming circuit is connected between 100 and the pole of Inverter Station 200.
When starting test, controls converting plant and Inverter Station cooperation unlocks under bipolar Ground return mode, in DC operation
In, DC control program needs the cooperation unlock of two stations；Preset the dc power initial value and initial liter of DC transmission system
After DC bipolar unlocks successfully, it is pre- to control DC transmission system stable operation first under the dc power initial value for reduction of speed rate
If the period.
Preferably, the dc power initial value is 500MW, and the initial ramp rate is 50MW/min.
Preferably, first preset time period is 5 minutes.
To verification step of the dc power stable operation function when instantaneously losing communication disturbance specifically: break in short-term
The communication connection between converting plant and Inverter Station is opened, and is restoring the communication connection between two stations after the second preset time period, is seen
Examine dc power whether still stable operation.
It should be noted that can be disconnected by way of disconnecting the telecommunication optical fiber between converting plant and Inverter Station two stations it
Between communication connection, restore the communication link between two stations by way of the telecommunication optical fiber connected between converting plant and Inverter Station
It connects.
Preferably, second preset time period is 10 seconds.
As an improvement of the above scheme, the method also includes:
When determining dc power stable operation, do not deal with；
When the non-stable operation of judgement dc power, check whether communication connection successfully restores, and check DC control journey
Whether sequence breaks down.
It should be understood that not needing any processing if dc power stable operation, can directly execute one under this method
The operation of step needs to check whether the communication connection between two stations successfully restores if dc power is unable to stable operation, and
And check whether the DC control program of DC transmission system breaks down, to carry out corresponding troubleshooting when breaking down
Processing.
To verification step of the dc power elevating function when instantaneously losing communication disturbance specifically: setting direct current function
Rate definite value and ramp rate disconnect rectification until dc power rises to the first predetermined power according to the ramp rate in short-term
The communication connection stood between Inverter Station, and restoring the communication connection between two stations after third preset time period, observe direct current
Power whether still according to setting dc power definite value and ramp rate stablize rise.
Preferably, the dc power definite value is 600MW, and first predetermined power is 550MW, and the ramp rate is
100MW/min。
It should be noted that DC control journey can be investigated by the setting parameter of change dc power and ramp rate
Whether sequence is capable of the variation of correct response parameter.
Preferably, the third preset time period is 5 seconds.
As an improvement of the above scheme, the method also includes:
When determining that dc power stablizes rising according to the dc power definite value and the ramp rate, do not deal with；
When determining that dc power does not stablize rising according to the dc power definite value and the ramp rate, communication is checked
Whether connection successfully restores, and checks whether DC control program breaks down.
It should be understood that rising if dc power is stablized according to the dc power definite value and ramp rate of setting, it is not required to
Any processing is wanted, the operation of this method next step can be directly executed, if dc power cannot be according to the direct current function of setting
Rate definite value and ramp rate, which are stablized, to be risen, and needs to check whether the communication connection between two stations successfully restores, and check direct current
Whether the DC control program of transmission system breaks down, to carry out corresponding troubleshooting processing when breaking down.
It is specific that verification step in the case of instantaneously losing communication disturbance is latched in the direct current in direct current sequence operating function
Are as follows: control converting plant and Inverter Station cooperation locking DC bipolar quickly disconnect converting plant and Inverter Station after locking order issues
Between communication connection, whether observation DC transmission system be normally latched successfully, and restore after the completion of lock operation two stations it
Between communication connection.
It should be noted that locking order can be sent out by testing crew by the main control page menus of DC transmission system
Out, after DC control program receives locking order, corresponding lock operation is executed.
As an improvement of the above scheme, the method also includes:
When determining that DC transmission system is latched successfully, do not deal with；
When determining that DC transmission system is non-latching successful, check whether DC control program breaks down.
It should be understood that not needing any processing if DC transmission system is normally latched, this method can be directly executed
The operation of next step needs to check the DC control journey of DC transmission system if DC transmission system cannot be normally latched
Whether sequence breaks down, to carry out corresponding troubleshooting processing when breaking down.
It is specific to verification step of the direct current unlock when instantaneously losing communication disturbance in direct current sequence operating function
Are as follows: control converting plant and Inverter Station cooperation unlock DC bipolar quickly disconnect converting plant and Inverter Station after unlocking command issues
Between communication connection, observation DC transmission system whether normal release success, and unlock operation after the completion of restore two stations it
Between communication connection.
It should be noted that unlocking command can be sent out by testing crew by the main control page menus of DC transmission system
Out, after DC control program receives unlocking command, corresponding unlock operation is executed.
As an improvement of the above scheme, the method also includes:
When determining that DC transmission system unlocks successfully, do not deal with；
When determining that DC transmission system does not unlock successfully, check whether DC control program breaks down.
It should be understood that not needing any processing, off-test, if direct current if DC transmission system normal release
Transmission system is unable to normal release, needs to check whether the DC control program of DC transmission system breaks down, to occur
Corresponding troubleshooting processing is carried out when failure.
A kind of improved method that DC field debugging instantaneously loses communication experiment, is not only protected provided by the embodiment of the present invention
It has stayed in routine test step and communication disturbance is instantaneously being lost to dc power stable operation function and dc power elevating function
In the case of verifying, also add to direct current sequence operating function, i.e., direct current locking and unlock and is instantaneously losing communication disturbance feelings
Verifying under condition, dc power stable operation function, the direct current function of DC transmission system under capable of being disturbed to communication is instantaneously lost
Rate elevating function and direct current sequence operating function carry out comprehensive verification, so as to verify the completeness of DC control program,
Guarantee DC transmission system reliability of operation.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. the improved method that a kind of debugging of DC field instantaneously loses communication experiment, which is characterized in that DC transmission system includes
Converting plant and Inverter Station, converting plant and Inverter Station include two poles, and it is each be extremely grounded, each pole connects corresponding pole
Forming circuit is connected between the pole of Control protection system, converting plant and Inverter Station；The described method includes:
Converting plant and Inverter Station cooperation unlock under bipolar Ground return mode；
Dc power initial value is preset, so that DC transmission system stable operation first under the dc power initial value
Preset time period；
The communication connection between converting plant and Inverter Station is disconnected, and restores communication connection after the second preset time period, judgement is straight
Flow power whether stable operation；
Dc power definite value and ramp rate are set, when dc power rises to the first predetermined power according to the ramp rate
When, the communication connection between converting plant and Inverter Station is disconnected, and restore communication connection after third preset time period, judges direct current
Whether power is stablized according to the dc power definite value and the ramp rate rises；
Converting plant and Inverter Station cooperation locking are bipolar, after locking order issues, disconnect the communication between converting plant and Inverter Station
Connection, judges whether DC transmission system is latched success, and restores communication connection after the completion of lock operation；
Converting plant and Inverter Station cooperation unlock are bipolar, after unlocking command issues, disconnect the communication between converting plant and Inverter Station
Connection, judges whether DC transmission system unlocks success, and restores communication connection after the completion of unlocking operation.
2. the improved method that DC field debugging as described in claim 1 instantaneously loses communication experiment, which is characterized in that described
Dc power initial value is 500MW, and the dc power definite value is 600MW, and first predetermined power is 550MW, the liter
Reduction of speed rate is 100MW/min.
3. the improved method that DC field debugging as described in claim 1 instantaneously loses communication experiment, which is characterized in that described
First preset time period is 5 minutes, and second preset time period is 10 seconds, and the third preset time period is 5 seconds.
4. the improved method that DC field debugging as described in claim 1 instantaneously loses communication experiment, which is characterized in that described
Method further include:
When determining dc power stable operation, do not deal with；
When the non-stable operation of judgement dc power, check whether communication connection successfully restores, and check that DC control program is
No failure.
5. the improved method that DC field debugging as described in claim 1 instantaneously loses communication experiment, which is characterized in that described
Method further include:
When determining that dc power stablizes rising according to the dc power definite value and the ramp rate, do not deal with；
When determining that dc power does not stablize rising according to the dc power definite value and the ramp rate, communication connection is checked
Whether successfully restore, and checks whether DC control program breaks down.
6. the improved method that DC field debugging as described in claim 1 instantaneously loses communication experiment, which is characterized in that described
Method further include:
When determining that DC transmission system is latched successfully, do not deal with；
When determining that DC transmission system is non-latching successful, check whether DC control program breaks down.
7. the improved method that DC field debugging as described in claim 1 instantaneously loses communication experiment, which is characterized in that described
Method further include:
When determining that DC transmission system unlocks successfully, do not deal with；
When determining that DC transmission system does not unlock successfully, check whether DC control program breaks down.
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