CN113824096A - Method, device and equipment for resetting direct-current transmission line protection system and storage medium - Google Patents
Method, device and equipment for resetting direct-current transmission line protection system and storage medium Download PDFInfo
- Publication number
- CN113824096A CN113824096A CN202111102028.2A CN202111102028A CN113824096A CN 113824096 A CN113824096 A CN 113824096A CN 202111102028 A CN202111102028 A CN 202111102028A CN 113824096 A CN113824096 A CN 113824096A
- Authority
- CN
- China
- Prior art keywords
- signal
- protection
- transmission line
- action signal
- protection action
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 215
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000009471 action Effects 0.000 claims abstract description 214
- 238000005259 measurement Methods 0.000 claims abstract description 111
- 238000009825 accumulation Methods 0.000 claims description 39
- 230000008014 freezing Effects 0.000 claims description 34
- 238000007710 freezing Methods 0.000 claims description 34
- 238000004590 computer program Methods 0.000 claims description 27
- 230000002159 abnormal effect Effects 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000035508 accumulation Effects 0.000 description 35
- 230000001276 controlling effect Effects 0.000 description 13
- 230000008569 process Effects 0.000 description 7
- 241000896693 Disa Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000008034 disappearance Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000005404 monopole Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H02H7/268—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 for dc systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The application relates to a method, a device, equipment and a storage medium for resetting a direct current transmission line protection system, wherein the method comprises the following steps: acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system, and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart; if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal; and resetting the direct current transmission line protection system according to the zero clearing signal. The technical scheme provided by the application can improve the reliability of the direct current transmission line protection system.
Description
Technical Field
The present invention relates to the field of high-voltage direct-current power transmission technologies, and in particular, to a method, an apparatus, a device, and a storage medium for resetting a protection system of a direct-current power transmission line.
Background
In the process of high-voltage direct-current transmission, the direct-current transmission line protection system can output a restarting protection action signal to the high-voltage direct-current transmission system when the high-voltage direct-current transmission system fails. After receiving the restarted protection action signal, the high-voltage direct-current transmission system executes the restarted protection action and needs to perform resetting operation on a counter, an initial value of the protection action signal and the like in the direct-current transmission line protection system.
Conventionally, an automatic restoration method may be generally adopted to perform restoration operation on a dc transmission line protection system. However, in the conventional automatic resetting method, when the direct current trigger pulse signal for triggering the converter in the high-voltage direct current transmission system to work disappears, the automatic resetting method cannot be adopted for resetting. Therefore, the traditional direct current transmission line protection system has the problem of poor reliability.
Disclosure of Invention
Based on this, the embodiment of the application provides a method, a device, equipment and a storage medium for resetting a direct current transmission line protection system, which can improve the reliability of the direct current transmission line protection system.
In a first aspect, a method for resetting a protection system of a direct current transmission line is provided, and the method includes:
acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system, and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart; if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal; and resetting the direct current transmission line protection system according to the zero clearing signal.
In one embodiment, the method further includes:
and if the direct current transmission line protection system does not acquire the trigger pulse signal from the high-voltage direct current transmission system, generating a zero clearing signal.
In one embodiment, the protection action signal further comprises a second protection action signal; generating a protective action signal from the electrical measurement data, comprising:
judging whether the electrical measurement data are abnormal electrical measurement data; if the electrical measurement data are abnormal electrical measurement data, generating a protection freezing signal according to the electrical measurement data; freezing a current protection action signal of the direct-current transmission line protection system based on the protection freezing signal, and determining the current protection action signal in a frozen state as a protection action signal; the current protection action signal is a first protection action signal or a second protection action signal.
In one embodiment, generating the protection action signal according to the electrical measurement data further comprises:
and if the electrical measurement data are not abnormal electrical measurement data, generating a first protection action signal according to the current value of a counter in the direct current transmission line protection system.
In one embodiment, generating a first protection action signal according to a current value of a counter in a dc transmission line protection system includes:
judging whether the electrical measurement data meet preset protection conditions or not; if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule; and generating a first protection action signal when the counter is accumulated to a first preset protection action delay fixed value.
In one embodiment, the method further includes:
if the preset protection condition is not met, controlling a counter in the direct current transmission line protection system to perform accumulation and subtraction counting according to a preset accumulation and subtraction rule; and when the counter is reduced to a second preset protection action delay fixed value, resetting the direct current transmission line protection system.
In one embodiment, resetting the dc transmission line protection system according to the clear signal includes:
and resetting the protection action signal of the direct current transmission line protection system and the current value of the counter according to the zero clearing signal.
In a second aspect, a device for resetting a dc transmission line protection system is provided, the device comprising:
the acquisition module is used for acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart;
the first generating module is used for generating a zero clearing signal according to the first protection action signal and the preset resetting signal if the direct-current transmission line protection system receives the preset resetting signal input by a user and the protection action signal is the first protection action signal;
and the resetting module is used for resetting the direct current transmission line protection system according to the zero clearing signal.
In a third aspect, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, the computer program, when executed by the processor, implementing the method steps in any of the embodiments of the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, is adapted to carry out the method steps of any of the embodiments of the first aspect described above.
According to the method, the device, the equipment and the storage medium for resetting the direct current transmission line protection system, the direct current transmission line protection system acquires electrical measurement data from the high-voltage direct current transmission system, and generates a protection action signal according to the electrical measurement data; if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal; and resetting the direct current transmission line protection system according to the zero clearing signal. In the technical scheme provided by the embodiment of the application, compared with the traditional reset operation of the direct current transmission line protection system by adopting an automatic reset mode, the function of manual reset is added, the first protection action signal and the preset reset signal input by a user are correlated, and when a direct current trigger pulse signal for triggering the converter to work disappears, the manual reset mode can be adopted to reset the direct current transmission line protection system, so that the reliability of the direct current transmission line protection system is improved.
Drawings
FIG. 1 is a block diagram of a computer device provided by an embodiment of the present application;
fig. 2 is a flowchart of a method for resetting a protection system of a direct current transmission line according to an embodiment of the present application;
fig. 3 is a flowchart of generating a protection action signal according to an embodiment of the present application;
fig. 4 is a flowchart of generating a first protection action signal according to an embodiment of the present application;
fig. 5 is a flowchart for resetting a dc transmission line protection system according to a counter value provided in an embodiment of the present application;
fig. 6 is a flowchart of a method for resetting a dc transmission line protection system according to an embodiment of the present disclosure;
fig. 7 is a block diagram of a resetting device of a dc transmission line protection system according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The restoration method of the direct current transmission line protection system can be applied to computer equipment, the computer equipment can be a server or a terminal, the server can be a server or a server cluster consisting of a plurality of servers, the method is not particularly limited in this embodiment, and the terminal can be but is not limited to various personal computers, notebook computers, smart phones, tablet computers and portable wearable equipment.
Taking the example of a computer device being a server, FIG. 1 shows a block diagram of a server, which may include a processor and memory connected by a system bus, as shown in FIG. 1. Wherein the processor of the server is configured to provide computing and control capabilities. The memory of the server comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a method for resetting a dc transmission line protection system.
Those skilled in the art will appreciate that the architecture shown in fig. 1 is a block diagram of only a portion of the architecture associated with the subject application, and does not constitute a limitation on the servers to which the subject application applies, and that servers may alternatively include more or fewer components than those shown, or combine certain components, or have a different arrangement of components.
It should be noted that the execution subject of the embodiment of the present application may be a computer device, or may also be a reset device of a dc transmission line protection system, and the following method embodiment is described with the computer device as the execution subject.
In an embodiment, as shown in fig. 2, a flowchart of a method for resetting a dc transmission line protection system provided in an embodiment of the present application is shown, where the method may include the following steps:
step 220, acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system, and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart.
The electric measurement data is used for representing the operation state of the high-voltage direct-current transmission system, and the direct-current transmission line protection system can acquire the electric measurement data through the corresponding input/output I/O system, can acquire the electric measurement data of the high-voltage direct-current transmission system in real time, and can also acquire the electric measurement data according to the preset interval duration. The electrical measurement data may be dc voltage, dc current, or other types of electrical measurement data. After the acquired electrical measurement data meet a preset condition, that is, when it is determined that the high-voltage direct-current power transmission system has a fault, a protection action signal may be generated, and the protection action signal may include a first protection action signal, that is, the protection action signal QU is equal to 1. Because the protection outlet of the direct current transmission line protection system can be restarted, the generated first protection action signal can restart the high-voltage direct current transmission system, so that the fault of the high-voltage direct current transmission system disappears.
And 240, if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal.
The method comprises the steps that a manual reset function is added to the direct current transmission line protection system, after the direct current transmission line protection system receives a preset reset signal input by a user, the protection action signal at the moment is determined to be a first protection action signal, and a zero clearing signal is generated according to the first protection action signal and the preset reset signal. The preset reset signal may be generated by a user by triggering a manual reset button of the dc transmission line protection system. When the protection action signal is the first protection action signal, the high-voltage direct-current power transmission system can be restarted, and at the moment, the protection action signal generated by the direct-current power transmission line protection system can be determined to be the first protection action signal.
And step 260, resetting the direct current transmission line protection system according to the zero clearing signal.
The protection logic of the direct current transmission line protection system with the protection outlet being restarted can be realized by counting through a DISA integral counting module, namely, a DISA integral counter is adopted. After the zero clearing signal is generated by the direct current transmission line protection system, the current value of the protection action signal in the direct current transmission line protection system, the current value of the DISA integral counter and the like can be reset, namely reset operation is carried out, so that the direct current transmission line protection system can normally export protection action when the next high-voltage direct current transmission system breaks down, and stable operation of the high-voltage direct current transmission system is ensured.
In the embodiment, the direct current transmission line protection system acquires electrical measurement data from the high voltage direct current transmission system, and generates a protection action signal according to the electrical measurement data; if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal; and resetting the direct current transmission line protection system according to the zero clearing signal. Compared with the traditional method for resetting the direct current transmission line protection system by adopting an automatic resetting mode, the method has the advantages that the manual resetting function is added, the first protection action signal is associated with the preset resetting signal input by the user, and when the direct current trigger pulse signal for triggering the converter to work disappears, the manual resetting mode can be adopted for resetting the direct current transmission line protection system, so that the reliability of the direct current transmission line protection system is improved.
In one embodiment, another possible process of generating the clear signal further includes: and if the direct current transmission line protection system does not acquire the trigger pulse signal from the high-voltage direct current transmission system, generating a zero clearing signal.
The trigger pulse disappearance signal is pre-associated with a zero clearing signal of the direct current transmission line protection system, namely the trigger pulse disappearance signal is used as the input of the zero clearing signal. And generating a zero clearing signal when the direct current transmission line protection system does not acquire the trigger pulse signal from the high-voltage direct current transmission system, namely the pulse trigger signal disappears.
In the traditional method, a trigger pulse disappearance signal is associated with a protection freezing signal of a direct current transmission line protection system, and when the direct current transmission line protection system generates a first protection action signal, the high-voltage direct current transmission system is restarted. The obtained electrical measurement still meets the preset condition in a short time, so that a counter in the direct current transmission line protection system is continuously accumulated, if the direct current transmission line protection system does not obtain a trigger pulse signal from the high-voltage direct current transmission system, a protection freezing signal is generated, a protection outlet of the direct current transmission line protection system is always kept, the direct current transmission line protection system always generates an alarm signal, the direct current transmission line protection system refuses the protection outlet after the next fault of the high-voltage direct current transmission system is caused, the direct current monopole of the high-voltage direct current transmission system is locked, and the direct current transmission line protection system cannot be restored after the direct current monopole is locked, so that the difficulty is brought to power restoration.
In the embodiment, the trigger pulse disappearing signal is associated with the zero clearing signal of the direct current transmission line protection system, and the direct current transmission line protection system is reset when the trigger pulse signal is not obtained, namely the zero clearing signal is generated, so that the reliability of the direct current transmission line protection system is improved, and the running stability and safety of the high-voltage direct current transmission system are also improved.
In an embodiment, the protection action signal further includes a second protection action signal, as shown in fig. 3, which shows a flowchart of a method for resetting a dc transmission line protection system provided in an embodiment of the present application, and in particular relates to a possible process for generating the protection action signal, the method may include the following steps:
and step 320, judging whether the electrical measurement data is abnormal electrical measurement data.
And 340, if the electrical measurement data are abnormal electrical measurement data, generating a protection freezing signal according to the electrical measurement data.
The obtained electrical measurement data can be compared with pre-stored normal electrical measurement data to determine whether the obtained electrical measurement data is abnormal electrical measurement data, and the pre-stored normal electrical data can be obtained from a normally-operated high-voltage direct-current power transmission system. When determining whether the obtained electrical measurement data is abnormal electrical measurement data, it may be determined whether the obtained electrical measurement data is consistent with the normal electrical measurement data, may also be determined whether a difference value between the electrical measurement data and the normal electrical measurement data is within a preset range, and may also be determined whether the obtained electrical measurement data is abnormal electrical measurement data in other manners, which is not specifically limited in this embodiment.
When the electrical measurement data are abnormal electrical measurement data, a protection freezing signal is generated, a current protection action signal of the direct current transmission line protection system is frozen based on the protection freezing signal, the current protection action signal in a freezing state is determined as a protection action signal, and the DISA integral counter can be reset at the same time. Since the protection action signal of the dc transmission line protection system may include two states, the protection action signal may further include a second protection action signal, and the second protection action signal corresponds to the first protection action signal, that is, the second protection action signal QU is 0, so that the high-voltage dc transmission system is not restarted. Therefore, the current protection operation signal after freezing may be the first protection operation signal or the second protection operation signal.
In the embodiment, whether the electrical measurement data is abnormal electrical measurement data is judged; if the electrical measurement data are abnormal electrical measurement data, generating a protection freezing signal according to the electrical measurement data; and freezing the current protection action signal of the direct-current transmission line protection system based on the protection freezing signal, and determining the current protection action signal in a frozen state as the protection action signal. After the protection freezing signal is generated, if the current protection action signal is a second protection action signal, the resetting operation is performed on the protection system of the direct current transmission line; if the current protection action signal is the first protection action signal, if a preset resetting signal input by a user is received at the same time, resetting of the direct current transmission line protection system can be achieved by generating the zero clearing signal, and therefore convenience of resetting the direct current transmission line protection system is improved.
In one embodiment, when the protection action signal is generated according to the electrical measurement data, if the electrical measurement data is not abnormal electrical measurement data, the first protection action signal is generated according to the current value of a counter in the direct current transmission line protection system.
Optionally, as shown in fig. 4, which shows a flowchart of a method for resetting a dc transmission line protection system provided in the embodiment of the present application, specifically, a possible process for generating a first protection action signal is provided, where the method may include the following steps:
and step 420, judging whether the electrical measurement data meet preset protection conditions.
And 440, if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule.
When the electrical measurement data is not abnormal electrical measurement data, it is necessary to determine whether the electrical measurement data satisfies a preset protection condition. The preset protection condition may be exceeding a preset electrical measurement constant, for example, the preset protection condition may be a preset dc voltage constant. And if the acquired direct-current voltage exceeds a preset direct-current voltage fixed value, determining that the electrical measurement data meet a preset protection condition. If the preset protection condition is met, controlling a DISA integral counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule, wherein the preset accumulation rule can be set according to actual requirements, for example, 20 accumulations can be performed every execution period.
When the counter is accumulated to a first preset protection action delay fixed value, that is, the current value of the dis integration counter reaches the accumulated value to reach the first preset protection action delay fixed value, a first protection action signal is generated, and the first preset protection action delay fixed value may also be set according to an actual requirement, for example, the first preset protection action delay fixed value may be set to 50 ms. In this embodiment, neither the accumulated value of each execution cycle of the dis integration counter nor the delay fixed value of the first predetermined protection action is specifically limited.
In the embodiment, whether the electrical measurement data meet the preset protection condition is judged; if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule; and generating a first protection action signal when the counter is accumulated to a first preset protection action delay fixed value. The first protection action signal can be accurately generated through the accumulated value of the counter in the direct current transmission line protection system, so that the high-voltage direct current transmission system can be protected more reliably.
In an embodiment, as shown in fig. 5, a flowchart of a method for resetting a dc transmission line protection system provided in the embodiment of the present application is shown, and specifically relates to a possible process for resetting a dc transmission line protection system according to a counter value, the method may include the following steps:
and step 520, if the preset protection condition is not met, controlling a counter in the direct current transmission line protection system to perform accumulation and subtraction according to a preset accumulation and subtraction rule.
And 540, resetting the direct current transmission line protection system when the counter is reduced to a second preset protection action delay fixed value.
Under the condition that the electrical measurement data do not meet the preset protection conditions, a counter in the direct current transmission line protection system is controlled to perform accumulation and subtraction according to a preset accumulation and subtraction rule, the preset accumulation and subtraction rule can be set according to actual requirements, and for example, 1 can be accumulated and subtracted every execution period. And when the counter is reduced to a second preset protection action delay fixed value, resetting the direct current transmission line protection system, namely resetting the protection action signal of the direct current transmission line protection system and the DISA integral counter. The second preset protection action delay fixed value can be the same as the first preset protection action delay fixed value, and can also be set according to actual requirements. In this embodiment, neither the count-down value of each execution cycle of the dis integration counter nor the delay setting value of the second predetermined protection action is specifically limited.
In this embodiment, if the preset protection condition is not met, a counter in the direct current transmission line protection system is controlled to perform accumulation and subtraction according to a preset accumulation and subtraction rule; and when the counter is reduced to a second preset protection action delay fixed value, resetting the direct current transmission line protection system. The resetting operation of the direct current transmission line protection system can be more reliably realized through the accumulated value of the counter in the direct current transmission line protection system.
In an embodiment, as shown in fig. 6, a flowchart of a method for resetting a dc transmission line protection system provided in an embodiment of the present application is shown, where the method may include the following steps:
and 601, acquiring electrical measurement data.
And 603, if the zero clearing signal is received, resetting the direct current transmission line protection system according to the zero clearing signal.
And step 606, if the protection freezing signal is not received, judging whether the electrical measurement data meets the preset protection condition.
And 607, if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule.
And step 609, generating a first protection action signal when the counter is accumulated to a first preset protection action delay fixed value.
And 610, if the preset protection condition is not met, controlling a counter in the direct current transmission line protection system to perform accumulation and subtraction according to a preset accumulation and subtraction rule.
And 611, resetting the protection system of the direct current transmission line when the counter is reduced to a second preset protection action delay fixed value.
The implementation principle and technical effect of each step in the method for resetting the protection system of the direct current transmission line provided by this embodiment are similar to those in the previous embodiments of the method for resetting the protection system of the direct current transmission line, and are not described herein again. The implementation manner of each step in the embodiment of fig. 6 is only an example, and is not limited to this, and the order of each step may be adjusted in practical application as long as the purpose of each step can be achieved.
In the technical scheme provided by the embodiment of the application, as the function of manual reset is added, the first protection action signal is associated with the preset reset signal input by the user, and when the direct current trigger pulse signal for triggering the converter to work disappears, the direct current transmission line protection system can be reset in a manual reset mode, so that the reliability of the direct current transmission line protection system is improved.
It should be understood that although the various steps in the flow charts of fig. 2-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
Please refer to fig. 7, which shows a block diagram of a dc transmission line protection system resetting apparatus 700 according to an embodiment of the present application. As shown in fig. 7, the dc transmission line protection system resetting device 700 may include: an acquisition module 702, a first generation module 704 and a retrieval module 706, wherein:
an obtaining module 702, configured to obtain electrical measurement data from the high-voltage dc power transmission system through the dc power transmission line protection system, and generate a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart.
The first generating module 704 is configured to generate a clear signal according to the first protection action signal and the preset reset signal if the dc transmission line protection system receives the preset reset signal input by the user and the protection action signal is the first protection action signal.
And the resetting module 706 is configured to reset the dc transmission line protection system according to the clear signal.
In an embodiment, the apparatus 700 further includes a second generating module 708, where the second generating module 708 is configured to generate a clear signal if the dc transmission line protection system does not acquire the trigger pulse signal from the hvdc transmission system.
In one embodiment, the obtaining module 702 includes a determining unit, a first generating unit, and a determining unit, where the determining unit is configured to determine whether the electrical measurement data is abnormal electrical measurement data; the first generation unit is used for generating a protection freezing signal according to the electrical measurement data if the electrical measurement data is abnormal electrical measurement data; the determining unit is used for freezing a current protection action signal of the direct-current transmission line protection system based on the protection freezing signal and determining the current protection action signal in a freezing state as a protection action signal; the current protection action signal is a first protection action signal or a second protection action signal.
In an embodiment, the obtaining module 702 further includes a second generating unit, where the second generating unit is configured to generate the first protection action signal according to a current value of a counter in the dc transmission line protection system if the electrical measurement data is not abnormal electrical measurement data.
In an embodiment, the second generating unit is specifically configured to determine whether the electrical measurement data meets a preset protection condition; if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule; and generating a first protection action signal when the counter is accumulated to a first preset protection action delay fixed value.
In an embodiment, the second generating unit is further configured to control a counter in the dc transmission line protection system to perform an accumulation and subtraction count according to a preset accumulation and subtraction rule if a preset protection condition is not satisfied; and when the counter is reduced to a second preset protection action delay fixed value, resetting the direct current transmission line protection system.
In an embodiment, the resetting module 706 includes a resetting unit, and the resetting unit is configured to reset the protection action signal of the dc transmission line protection system and the current value of the counter according to the clear signal.
For specific limitations of the restoration device of the dc transmission line protection system, reference may be made to the above limitations of the restoration method of the dc transmission line protection system, and details are not described herein again. All or part of the modules in the resetting device of the direct current transmission line protection system can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute the operations of the modules.
In one embodiment of the present application, there is provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the following steps when executing the computer program:
acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system, and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart; if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal; and resetting the direct current transmission line protection system according to the zero clearing signal.
In one embodiment of the application, the processor when executing the computer program further performs the steps of:
and if the direct current transmission line protection system does not acquire the trigger pulse signal from the high-voltage direct current transmission system, generating a zero clearing signal.
In one embodiment of the present application, the protection action signal further comprises a second protection action signal;
the processor, when executing the computer program, further performs the steps of:
judging whether the electrical measurement data are abnormal electrical measurement data; if the electrical measurement data are abnormal electrical measurement data, generating a protection freezing signal according to the electrical measurement data; freezing a current protection action signal of the direct-current transmission line protection system based on the protection freezing signal, and determining the current protection action signal in a frozen state as a protection action signal; the current protection action signal is a first protection action signal or a second protection action signal.
In one embodiment of the application, the processor when executing the computer program further performs the steps of:
and if the electrical measurement data are not abnormal electrical measurement data, generating a first protection action signal according to the current value of a counter in the direct current transmission line protection system.
In one embodiment of the application, the processor when executing the computer program further performs the steps of:
judging whether the electrical measurement data meet preset protection conditions or not; if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule; and generating a first protection action signal when the counter is accumulated to a first preset protection action delay fixed value.
In one embodiment of the application, the processor when executing the computer program further performs the steps of:
if the preset protection condition is not met, controlling a counter in the direct current transmission line protection system to perform accumulation and subtraction counting according to a preset accumulation and subtraction rule; and when the counter is reduced to a second preset protection action delay fixed value, resetting the direct current transmission line protection system.
In one embodiment of the application, the processor when executing the computer program further performs the steps of:
and resetting the protection action signal of the direct current transmission line protection system and the current value of the counter according to the zero clearing signal.
The implementation principle and technical effect of the computer device provided by the embodiment of the present application are similar to those of the method embodiment described above, and are not described herein again.
In an embodiment of the application, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of:
acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system, and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart; if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is a first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal; and resetting the direct current transmission line protection system according to the zero clearing signal.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of:
and if the direct current transmission line protection system does not acquire the trigger pulse signal from the high-voltage direct current transmission system, generating a zero clearing signal.
In one embodiment of the present application, the protection action signal further comprises a second protection action signal;
the computer program when executed by the processor further realizes the steps of:
judging whether the electrical measurement data are abnormal electrical measurement data; if the electrical measurement data are abnormal electrical measurement data, generating a protection freezing signal according to the electrical measurement data; freezing a current protection action signal of the direct-current transmission line protection system based on the protection freezing signal, and determining the current protection action signal in a frozen state as a protection action signal; the current protection action signal is a first protection action signal or a second protection action signal.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of:
and if the electrical measurement data are not abnormal electrical measurement data, generating a first protection action signal according to the current value of a counter in the direct current transmission line protection system.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of:
judging whether the electrical measurement data meet preset protection conditions or not; if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule; and generating a first protection action signal when the counter is accumulated to a first preset protection action delay fixed value.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of:
if the preset protection condition is not met, controlling a counter in the direct current transmission line protection system to perform accumulation and subtraction counting according to a preset accumulation and subtraction rule; and when the counter is reduced to a second preset protection action delay fixed value, resetting the direct current transmission line protection system.
In one embodiment of the application, the computer program when executed by the processor further performs the steps of:
and resetting the protection action signal of the direct current transmission line protection system and the current value of the counter according to the zero clearing signal.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for resetting a direct current transmission line protection system is characterized by comprising the following steps:
acquiring electrical measurement data from a high-voltage direct-current power transmission system through the direct-current power transmission line protection system, and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart;
if the direct current transmission line protection system receives a preset resetting signal input by a user and the protection action signal is the first protection action signal, generating a zero clearing signal according to the first protection action signal and the preset resetting signal;
and resetting the direct current transmission line protection system according to the zero clearing signal.
2. The method of claim 1, further comprising:
and if the direct current transmission line protection system does not acquire the trigger pulse signal from the high-voltage direct current transmission system, generating the zero clearing signal.
3. The method of claim 1 or 2, wherein the protection action signal further comprises a second protection action signal; the generating of a protective action signal from the electrical measurement data comprises:
judging whether the electrical measurement data are abnormal electrical measurement data or not;
if the electrical measurement data are abnormal electrical measurement data, generating a protection freezing signal according to the electrical measurement data;
freezing a current protection action signal of the direct-current transmission line protection system based on the protection freezing signal, and determining the current protection action signal in a freezing state as the protection action signal; the current protection action signal is the first protection action signal or the second protection action signal.
4. The method of claim 3, wherein generating a protective action signal from the electrical measurement data further comprises:
and if the electrical measurement data is not abnormal electrical measurement data, generating the first protection action signal according to the current value of a counter in the direct current transmission line protection system.
5. The method of claim 4, wherein generating the first protection action signal according to a current value of a counter in the DC transmission line protection system comprises:
judging whether the electrical measurement data meet preset protection conditions or not;
if the preset protection condition is met, controlling a counter in the direct current transmission line protection system to perform accumulation counting according to a preset accumulation rule;
and generating the first protection action signal when the counter is accumulated to a first preset protection action delay fixed value.
6. The method of claim 5, further comprising:
if the preset protection condition is not met, controlling a counter in the direct current transmission line protection system to perform accumulation and subtraction counting according to a preset accumulation and subtraction rule;
and resetting the direct current transmission line protection system when the counter is reduced to a second preset protection action delay fixed value.
7. The method of claim 1, wherein resetting the dc transmission line protection system according to the clear signal comprises:
and resetting the protection action signal of the direct current transmission line protection system and the current value of the counter according to the zero clearing signal.
8. A kind of direct current transmission line protective system reset device, characterized by that, the said device includes:
the acquisition module is used for acquiring electrical measurement data from the high-voltage direct-current power transmission system through the direct-current power transmission line protection system and generating a protection action signal according to the electrical measurement data; the protection action signal comprises a first protection action signal; the first protection action signal is used for indicating the high-voltage direct-current power transmission system to restart;
the first generating module is used for generating a zero clearing signal according to the first protection action signal and a preset resetting signal if the direct current transmission line protection system receives the preset resetting signal input by a user and the protection action signal is the first protection action signal;
and the resetting module is used for resetting the direct current transmission line protection system according to the zero clearing signal.
9. A computer arrangement comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111102028.2A CN113824096B (en) | 2021-09-18 | 2021-09-18 | Method, device, equipment and storage medium for resetting direct current transmission line protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111102028.2A CN113824096B (en) | 2021-09-18 | 2021-09-18 | Method, device, equipment and storage medium for resetting direct current transmission line protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113824096A true CN113824096A (en) | 2021-12-21 |
| CN113824096B CN113824096B (en) | 2024-04-02 |
Family
ID=78922678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111102028.2A Active CN113824096B (en) | 2021-09-18 | 2021-09-18 | Method, device, equipment and storage medium for resetting direct current transmission line protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113824096B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269840A (en) * | 2014-10-20 | 2015-01-07 | 国家电网公司 | Restarting method for faults of direct current transmission line of extra-high voltage direct current engineering |
| CN104767196A (en) * | 2015-04-02 | 2015-07-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Automatic in service and out of service method for restarting monitoring function of direct current transmission line fault |
| CN208835837U (en) * | 2018-07-20 | 2019-05-07 | 广东电网有限责任公司 | Long-range involution equipment and system |
| CN111934289A (en) * | 2020-07-01 | 2020-11-13 | 南方电网科学研究院有限责任公司 | Control method, device, equipment and medium for inverter side valve short-circuit protection action |
| CN113241741A (en) * | 2021-05-14 | 2021-08-10 | 广东电网有限责任公司电力调度控制中心 | Direct-current line protection method, device and equipment for preventing false start of alternating-current fault |
-
2021
- 2021-09-18 CN CN202111102028.2A patent/CN113824096B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269840A (en) * | 2014-10-20 | 2015-01-07 | 国家电网公司 | Restarting method for faults of direct current transmission line of extra-high voltage direct current engineering |
| CN104767196A (en) * | 2015-04-02 | 2015-07-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Automatic in service and out of service method for restarting monitoring function of direct current transmission line fault |
| CN208835837U (en) * | 2018-07-20 | 2019-05-07 | 广东电网有限责任公司 | Long-range involution equipment and system |
| CN111934289A (en) * | 2020-07-01 | 2020-11-13 | 南方电网科学研究院有限责任公司 | Control method, device, equipment and medium for inverter side valve short-circuit protection action |
| CN113241741A (en) * | 2021-05-14 | 2021-08-10 | 广东电网有限责任公司电力调度控制中心 | Direct-current line protection method, device and equipment for preventing false start of alternating-current fault |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113824096B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107066365B (en) | System abnormity monitoring method and device | |
| CN112345944B (en) | Battery abnormality detection method, apparatus, electronic device, and computer-readable storage medium | |
| CN109583758B (en) | Early warning rule correction method and device of monitoring system and computer equipment | |
| CN107590016B (en) | Power-down restarting identification method and device | |
| CN110990645B (en) | Power consumption monitoring method and device, computer equipment and storage medium | |
| CN104426696A (en) | Fault processing method and device | |
| CN111293754B (en) | Charging system, method, electronic device, and computer-readable storage medium | |
| CN110763952A (en) | Underground cable fault monitoring method and device | |
| CN110837956A (en) | Underground cable inspection task distribution method and device | |
| CN110674149B (en) | Service data processing method and device, computer equipment and storage medium | |
| CN111143147A (en) | Automatic instrument debugging method and device, computer equipment and readable storage medium | |
| CN112240960A (en) | Test method, test device, computer equipment and storage medium | |
| CN107222497B (en) | Network flow abnormity monitoring method and electronic equipment | |
| CN113824096A (en) | Method, device and equipment for resetting direct-current transmission line protection system and storage medium | |
| CN112132652B (en) | Order information acquisition method and device, computer equipment and storage medium | |
| CN111062503B (en) | Power grid monitoring alarm processing method, system, terminal and storage medium | |
| CN110838940A (en) | Underground cable inspection task configuration method and device | |
| CN116010199A (en) | Application service self-adjustment method, device, computer equipment and storage medium | |
| CN111176930B (en) | Component operation data processing method and device, computer equipment and storage medium | |
| CN110890977B (en) | Host node monitoring method and device of cloud platform and computer equipment | |
| CN110969430B (en) | Suspicious user identification method, suspicious user identification device, computer equipment and storage medium | |
| CN110954780A (en) | Underground cable fault detection method and device based on block chain | |
| CN111258860A (en) | Data alarm method, device, computer equipment and storage medium | |
| CN114356617B (en) | Error injection testing method, device, system and computing equipment | |
| CN113037528B (en) | Elastic expansion and contraction method and device for alarm service node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |