CN112698151A - Fault management method, device and system for plant station - Google Patents
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Abstract
The invention discloses a fault management method, device and system for a plant station. A fault management method for a plant, comprising: receiving power grid operation data information, checking the power grid operation data information, judging whether the power grid operation data information is complete, and if the power grid operation data information is complete, judging whether the power grid operation data information comprises fault information; if the power grid operation data information comprises fault information, carrying out fault classification and fault positioning according to the fault information; if the power grid operation data information does not include fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
Description
Technical Field
The embodiment of the invention relates to a plant station management technology, in particular to a fault management method, device and system for a plant station.
Background
With the development of technology, in order to realize remote measurement and control of power plants and transformer substations, the automation level of a remote measurement and control system and an acquisition terminal of a power plant needs to be improved.
In the prior art, an electric energy acquisition terminal in a plant station can acquire electric energy data, and transmits designated content to a master station at a designated time point, the data acquired by the electric energy acquisition terminal at present comprises information such as monthly frozen electric quantity, time-sharing electric quantity, demand, voltage, current, power and fault time record, and the master station can store the information after receiving the information, but the electric energy acquisition terminal and the master station do not have an analysis function on the information, and when a power distribution network fails, the fault type cannot be automatically judged and fault location cannot be carried out, and the functions of dynamically adjusting data interaction and a data storage period cannot be realized.
Disclosure of Invention
The invention provides a fault management method, a fault management device and a fault management system for a plant station, which aim to automatically judge the type and the position of a fault and automatically adjust the data interaction and the data storage period when a distribution line has the fault.
In a first aspect, an embodiment of the present invention provides a fault management method for a plant, including:
receiving power grid operation data information, checking the power grid operation data information, judging whether the power grid operation data information is complete or not,
if the power grid operation data information is complete, judging whether the power grid operation data information comprises fault information;
if the power grid operation data information comprises the fault information, fault classification and fault positioning are carried out according to the fault information;
if the power grid operation data information does not include the fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
Further, performing fault location according to the fault information includes:
constructing an equivalent model of the distribution network, constructing a network description matrix according to the equivalent model, constructing a fault information matrix according to the fault information, determining a fault judgment matrix according to the network description matrix and the fault information matrix,
and carrying out fault positioning according to the fault judgment matrix.
Further, if the fault can not be located according to the fault information, a fault information message is generated and pushed according to the fault information.
And further, acquiring asset number data, and performing station configuration information self-check according to the asset number data.
Further, verifying the power grid operation data information includes: and performing cyclic redundancy check on the power grid operation data information.
Further, the method also comprises the step of sending a remote switch control instruction, and generating a power supply restarting control instruction according to the remote switch control instruction.
In a second aspect, an embodiment of the present invention further provides a fault management apparatus for a plant, including:
a checking module for receiving the power grid operation data information, checking the power grid operation data information, judging whether the power grid operation data information is complete or not,
the management module is used for judging whether the power grid operation data information comprises fault information or not if the power grid operation data information is complete;
if the power grid operation data information comprises the fault information, fault classification and fault positioning are carried out according to the fault information;
if the power grid operation data information does not include the fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
The system further comprises a self-checking module, wherein the self-checking module is used for acquiring asset number data and performing station configuration information self-checking according to the asset number data.
In a third aspect, an embodiment of the present invention further provides a fault management system for a plant station, including a data acquisition unit, a control unit, and a power supply unit, where the data acquisition unit is connected to the control unit, the data acquisition unit is used to acquire power grid operation data information, the power supply unit is used to supply power to the data acquisition unit and the control unit,
the control unit is configured with the fault management device for the plant station, which is described in the embodiment of the invention.
Further, the device also comprises a communication unit which is connected with the control unit in a communication way,
the communication unit is used for sending a remote switch control instruction, and the control unit is also used for generating a power supply restarting control instruction according to the remote switch control instruction.
Compared with the prior art, the invention has the beneficial effects that: the fault management method for the plant station can automatically judge whether the distribution line in the distribution network has a fault according to the collected power grid operation data, and can automatically judge the type and the position of the fault when the distribution line has the fault, so that workers in the plant station can know the working state of the distribution network conveniently. In addition, the data acquisition period and the data storage period can be automatically adjusted according to the quantity of the power grid operation data, and when the power grid operation data is less, the data acquisition period and the data storage period are increased, so that the power consumption of a plant station can be reduced.
Drawings
FIG. 1 is a flow diagram of a fault management method for a plant in an embodiment;
FIG. 2 is a flow diagram of another method for fault management of a plant in an embodiment;
FIG. 3 is a block diagram of a fault management method for a plant in an embodiment;
FIG. 4 is a system diagram of a fault management method for a plant in an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a fault management method for a plant in an embodiment, where the embodiment is applicable to a situation of plant daily property monitoring and management, the method may be executed by a fault management apparatus for a plant, the apparatus may be implemented in a software manner, and the apparatus may be configured in an electronic device, such as a server or a terminal device, and referring to fig. 1, the fault management method for a plant includes:
s101, receiving power grid operation data information, checking the power grid operation data information, and judging whether the power grid operation data information is complete.
In this embodiment, the power station retains a power distribution station, and a power distribution management system is configured in the power distribution station, and the power distribution management system may receive grid operation data information collected by a data collection device (e.g., a differential protection device, a current transformer, a voltage transformer, etc.), where the grid operation data information may include distribution network phase voltages, phase currents, short-circuit currents, zero-sequence voltages, breaker switch states, etc.
In this step, when the grid operation data information is received, the grid operation data is checked to verify the correctness and integrity of the received grid operation data information.
For example, the grid operation data information may be checked through parity data check, cyclic redundancy check, and the like.
S102, if the power grid operation data information is complete, whether the power grid operation data information comprises fault information is judged.
For example, in this step, the short-circuit current, the zero-sequence current, and the zero-sequence voltage may be used as fault information, and if the short-circuit current, the zero-sequence current, and the zero-sequence voltage are received and the short-circuit current, the zero-sequence current, or the zero-sequence voltage is not zero, it is determined that the power distribution network has a fault.
And S103, if the power grid operation data information comprises fault information, carrying out fault classification and fault positioning according to the fault information.
For example, in this step, the fault type of the power distribution network, such as an inter-phase short-circuit fault, a single-phase ground fault, a two-phase ground fault, etc., may be determined according to the value of the short-circuit current.
Furthermore, in this step, the zero sequence impedance of the fault line section can be calculated through the zero sequence voltage and the zero sequence current, and the cause of the fault, such as insulator string breakdown, air gap breakdown between the wires and the ground wire, and the like, can be determined according to the magnitude of the zero sequence impedance.
For example, in this step, for a certain distribution line side, the position of the fault point may be determined by using a single-ended ranging method or a double-ended ranging method. For a power distribution network with a certain topological structure (such as a radial network, a tree network, etc.), a fault location method based on a net-based structure matrix or a fault location method based on a net-shaped structure matrix may be adopted to perform fault location.
S104, if the power grid operation data information does not include fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
For example, in this step, if the power distribution network does not have a fault, the data acquisition period is dynamically adjusted according to the amount of the power grid operation data information, for example, if the amount of the power grid operation data information in a certain period of time is increased, the data acquisition period is shortened, and if the amount of the power grid operation data information in a certain period of time is decreased, the data acquisition period is increased.
For example, in this step, the data storage period is determined according to the data acquisition period, for example, if the data acquisition period is shortened, the data storage period is shortened, and if the data acquisition period is increased, the data storage period is increased.
In this embodiment, the proposed fault management method for the plant station can automatically determine whether a distribution line in the distribution network has a fault according to the collected power grid operation data, and when the distribution line has a fault, can automatically determine the type of the fault and the position of the fault, so that workers in the plant station can know the working state of the distribution network conveniently. In addition, the data acquisition period and the data storage period can be automatically adjusted according to the quantity of the power grid operation data, and when the power grid operation data is less, the data acquisition period and the data storage period are increased, so that the power consumption of a plant station can be reduced.
FIG. 2 is a flow chart of another fault management method for a plant in an embodiment, and referring to FIG. 2, as an implementable embodiment, the fault management method for the plant comprises:
s201, acquiring asset number data, and performing station configuration information self-check according to the asset number data.
Illustratively, in this step, the asset number is an asset number of a device configured in the plant station, where a manufacturer corresponding to the device may be obtained according to the asset number, and the plant station configuration is self-checked according to the type and format of the numerical data, according to the type and format of the configuration data, which are defined by the manufacturer and are specific to the device, so as to determine whether the configuration of the device in the plant station is correct. When the configuration information is incorrect, the configuration information can be corrected in time so as to avoid the problem that the equipment cannot work normally due to incorrect configuration information when the plant station runs.
S202, constructing an equivalent model of the power distribution network, and constructing a network description matrix according to the equivalent model.
Illustratively, in the scheme, a positioning method based on a network base structure matrix is adopted to position faults in the power distribution network.
When fault location is carried out by adopting a location method of a network base structure matrix, a network description matrix is firstly determined. Illustratively, when a network description matrix is constructed, nodes such as circuit breakers, section switches and interconnection switches in the power distribution network are numbered first, and if the power distribution network contains N nodes in totalThe node, the network description matrix is an N-order matrix, and the element C in the matrixijThe value of (a) is C if no other node exists between the node i and the node j and a feeder segment exists between the node i and the node jijIs 1, otherwise is 0.
S203, receiving the power grid operation data information, performing cyclic redundancy check on the power grid operation data information, and judging whether the power grid operation data information is complete.
In this step, the grid operation data information may include, for example, a phase voltage, a phase current, a short-circuit current, a zero-sequence voltage, a breaker switch state, and the like of the distribution grid.
For example, in this step, a cyclic redundancy check mode may be adopted to check each type of power grid operation data information, and the correctness and integrity of each type of power grid operation data are respectively determined. The efficiency of data check and the accuracy of check can be improved through cyclic redundancy check.
And S204, if the power grid operation data information is complete, judging whether the power grid operation data information comprises fault information.
For example, in this step, fault current (short-circuit current, zero sequence current) information, fault voltage information, and breaker switch state may be used as the fault information, where the fault current information includes an identifier corresponding to a node through which the fault current flows in the power distribution network.
And S205, if the power grid operation data information comprises fault information, carrying out fault classification according to the fault information.
For example, in this step, the plant station may first send data request information to the terminal (e.g., an electric meter), and the plant station may determine whether to receive the power grid operation data information returned by the terminal after sending the data request information, and determine that the terminal has a crash fault if the power grid operation data information is not received.
And if the short-circuit current, the zero-sequence current and the zero-sequence voltage are received and the short-circuit current, the zero-sequence current or the zero-sequence voltage is not zero, judging that the power distribution network line has a fault.
S206, judging whether the fault is terminal crash, if so, sending a remote switch control instruction, and generating a power supply restart control instruction according to the remote switch control instruction.
Illustratively, in this step, the remote switch control instruction may be sent by a worker in the plant station, and the remote switch control instruction is used to control the restart of the power supply unit that supplies power to the terminal, so as to achieve the purpose of restarting the terminal.
And S207, judging whether fault positioning can be carried out or not according to the fault information, and if fault positioning cannot be carried out according to the fault information, generating and pushing a fault information message according to the fault information.
For example, in this step, it is determined whether the fault information includes fault current information, if the fault information includes the fault current information, it is determined that fault location is possible, and if the fault current information is not included, the remaining fault information is integrated to generate a fault information message, and the fault information message is pushed to a user side such as a smart phone.
S208, if the fault can be located according to the fault information, a fault information matrix is constructed according to the fault information, a fault judgment matrix is determined according to the network description matrix and the fault information matrix, and fault location is carried out according to the fault judgment matrix.
In an exemplary embodiment, in the present disclosure, a positioning method based on a grid-based structure matrix is used to position a fault in a power distribution network, and when a distribution line in the power distribution network has a fault, a fault information matrix is constructed according to fault current information.
For example, in this step, if the network description matrix is an N-order matrix, the fault information matrix is also an N-order matrix, and the diagonal element G in the matrix isiiIs that if a fault current flows through node i, then GiiIs 1, otherwise is 0, the rest elements in the matrix are set to zero.
Illustratively, the formula for constructing the fault judgment matrix is as follows:
P′＝C×G
P＝g(P′)
where g (-) is the formatting operation, i.e.: if C is present in the matrix Cmj...CkjWith the value of the element 1, the element in GPrime GjjHas a value of 1, and Gmm...CkkHas a value of 0, then the element P ' in the matrix P ' is 'jjAnd setting 0.
Illustratively, if element P in matrix Pij、PjiSatisfy Pij XOR PjiIf the latter value is 1, then the section between node i and node j is determined to be a faulty section, where XOR represents an XOR operation.
S209, if the power grid operation data information does not include fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
For example, in this step, if the power distribution network does not have a fault, the data acquisition period is dynamically adjusted according to the amount of the power grid operation data information, for example, if the amount of the power grid operation data information in a certain period of time is increased, the data acquisition period is shortened, and if the amount of the power grid operation data information in a certain period of time is decreased, the data acquisition period is increased.
According to the scheme, the fault management method for the plant station can automatically judge the type and the position of the fault and automatically adjust the data acquisition period and the data storage period.
In addition, equipment in the plant station can be self-checked according to the asset number, the problem that the plant station equipment is abnormal in operation due to configuration errors is solved, whether the terminal crashes or not can be judged, if the terminal crashes or not is restarted through a remote switch control instruction, and the problem that when a simple crash fault occurs, a driver drives the plant station which is hundreds of kilometers away to restart manually, and a large amount of manpower and material resources are consumed is solved.
Example two
Fig. 3 is a block diagram of a fault management method and apparatus for a plant in an embodiment, and referring to fig. 3, the present embodiment provides a fault management apparatus for a plant, including: a verification module 100 and a management module 200.
The checking module 100 is configured to receive the power grid operation data information, check the power grid operation data information, and determine whether the power grid operation data information is complete.
The management module 200 is configured to determine whether the power grid operation data information includes fault information if the power grid operation data information is complete; if the power grid operation data information comprises fault information, carrying out fault classification and fault positioning according to the fault information; if the power grid operation data information does not include fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
For example, based on the technical solution shown in fig. 1 that the checking module 100 and the management module 200 can execute in the first embodiment, the implementation process and the beneficial effects thereof are the same as those described in the first embodiment, and are not described herein again.
Referring to fig. 3, the fault management method and apparatus for a plant station may further include a self-test module 300. The self-checking module 300 is configured to obtain asset number data, and perform self-checking on plant station configuration information according to the asset number data.
For example, based on the verification module 100, the management module 200, and the self-test module 300, the technical solution shown in fig. 2 may be implemented, and the implementation process and the beneficial effects thereof are the same as those described in the first embodiment, and are not described herein again.
EXAMPLE III
Fig. 4 is a system block diagram of a fault management method for a plant in an embodiment, and referring to fig. 4, the embodiment proposes a fault management system for a plant, including: data acquisition unit 1, control unit 2 and power supply unit 3.
The data acquisition unit 1 is connected with the control unit 2, the data acquisition unit 1 is used for acquiring power grid operation data information, and the power supply unit 3 is used for supplying power to the data acquisition unit 1 and the control unit 2.
For example, in this embodiment, the data acquisition unit may be an RS-485 communication module, the data acquisition unit is in communication connection with a terminal (for example, a voltmeter) in the power distribution network, the control unit 2 may be a server, the server is disposed in a plant station, and the fault management device for the plant station described in the second embodiment may be configured in the server to execute the fault management method shown in fig. 1.
Referring to fig. 4, the fault management system may further include a communication unit 4, and the communication unit 4 is communicatively connected to the control unit 2. The communication unit 4 is used for sending a remote switch control instruction, and the control unit 2 is also used for generating a power supply restart control instruction according to the remote switch control instruction. The fault management method shown in fig. 2 may also be performed in the server.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A fault management method for a plant, comprising:
receiving power grid operation data information, checking the power grid operation data information, judging whether the power grid operation data information is complete or not,
if the power grid operation data information is complete, judging whether the power grid operation data information comprises fault information;
if the power grid operation data information comprises the fault information, fault classification and fault positioning are carried out according to the fault information;
if the power grid operation data information does not include the fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
2. The fault management method for a plant of claim 1, wherein locating a fault based on the fault information comprises:
constructing an equivalent model of the distribution network, constructing a network description matrix according to the equivalent model, constructing a fault information matrix according to the fault information, determining a fault judgment matrix according to the network description matrix and the fault information matrix,
and carrying out fault positioning according to the fault judgment matrix.
3. The method according to claim 1, wherein if fault location cannot be performed according to the fault information, a fault information message is generated and pushed according to the fault information.
4. The method according to claim 1, wherein asset numbering data is obtained, and plant configuration information self-checking is performed according to the asset numbering data.
5. The fault management method for a plant of claim 1, wherein verifying the grid operational data information comprises: and performing cyclic redundancy check on the power grid operation data information.
6. The method for fault management of a plant of claim 1, further comprising transmitting a remote switch control command, generating a power restart control command based on the remote switch control command.
7. A fault management device for a plant, comprising:
a checking module for receiving the power grid operation data information, checking the power grid operation data information, judging whether the power grid operation data information is complete or not,
the management module is used for judging whether the power grid operation data information comprises fault information or not if the power grid operation data information is complete;
if the power grid operation data information comprises the fault information, fault classification and fault positioning are carried out according to the fault information;
if the power grid operation data information does not include the fault information, adjusting a data acquisition period and a data storage period according to the quantity of the power grid operation data information, acquiring the power grid operation data information according to the data acquisition period, and storing the power grid operation data information according to the data storage period.
8. The fault management device for a plant station of claim 8, further comprising a self-checking module, wherein the self-checking module is configured to obtain asset number data and perform plant station configuration information self-checking according to the asset number data.
9. A fault management system for a station is characterized by comprising a data acquisition unit, a control unit and a power supply unit, wherein the data acquisition unit is connected with the control unit and used for acquiring power grid operation data information, the power supply unit is used for supplying power to the data acquisition unit and the control unit,
the control unit is provided with the fault management arrangement for a plant of claim 7.
10. The fault management system for a plant of claim 9, further comprising a communication unit communicatively coupled to the control unit,
the communication unit is used for sending a remote switch control instruction, and the control unit is also used for generating a power supply restarting control instruction according to the remote switch control instruction.
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