CN110460042B - Wide area information-based out-of-step separation control method and system and readable storage medium - Google Patents
Wide area information-based out-of-step separation control method and system and readable storage medium Download PDFInfo
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- CN110460042B CN110460042B CN201910679644.0A CN201910679644A CN110460042B CN 110460042 B CN110460042 B CN 110460042B CN 201910679644 A CN201910679644 A CN 201910679644A CN 110460042 B CN110460042 B CN 110460042B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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Abstract
The invention discloses a method, a system and a readable storage medium for out-of-step separation control based on wide area information, wherein the method comprises the following steps: receiving power information monitored by each power monitoring device in the power monitoring device group in real time; integrating and classifying the power information according to the type of the power monitoring device; sending the integrated and classified power information to a central server, and determining the out-of-step type of the current power system by the central server according to the power information; and determining a control strategy of the current power system according to the step-out type, and executing a corresponding control action according to the control strategy. The invention can solve the problems that after the serious fault of the existing power system occurs, the existing power system usually acts after 2-3 oscillation cycles after the system is out of step, when the out-of-step oscillation section is composed of a plurality of power transmission channels, the judgment time of each channel is inconsistent, the final splitting time of the section is determined by the splitting time of the power transmission channel which is split at the latest, the power system is broken down, and the loss is aggravated.
Description
Technical Field
The invention relates to the technical field of power system control, in particular to a method and a system for out-of-step separation control based on wide area information and a readable storage medium.
Background
The electric power system is an electric energy production and consumption system which consists of links of power generation, power transmission, power transformation, power distribution, power utilization and the like. The function of the device is to convert the natural primary energy into electric energy through a power generation device, and then supply the electric energy to each user through power transmission, power transformation and power distribution. In order to realize the function, the power system is also provided with corresponding information and control systems at each link and different levels to measure, regulate, control, protect, communicate and schedule the production process of the electric energy so as to ensure that users obtain safe, economic and high-quality electric energy
At present, the out-of-step disconnection devices configured in domestic and foreign power systems are divided into two types, one is an out-of-step disconnection device for judging based on local information, and the other is an out-of-step disconnection device based on wide area information. The on-site out-of-step separation device is based on local information and decentralized control, and no information is exchanged among all stations. The wide area information out-of-step separation and control system is composed of a main station device and a sub-station device, and functions of wide area information acquisition, transient stability judgment, out-of-step separation and the like are completed together.
In general, after a power system has a serious fault, the out-of-step disconnection device based on local information usually operates after 2 to 3 oscillation cycles after the system is out of step. When the out-of-step oscillation section is composed of a plurality of power transmission channels, the judgment time of each channel is inconsistent, and the final splitting time of the section is determined by the splitting time of the power transmission channel which is split at the latest. Some channels with the same section under partial faults have unobvious oscillation characteristics, and the in-situ out-of-step separation device is difficult to operate. The actual action effect may be that a large number of sets trip or load loss exist before the action, the stable recovery capability of the system after the disconnection is greatly influenced, and in severe cases, part of the channel out-of-step disconnection devices can be disconnected later or even are difficult to be disconnected, so that the power system is broken down, and the loss is aggravated.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method, a system, and a readable storage medium for controlling out-of-step separation based on wide-area information, which can prevent the wide-area separation device from malfunction, can perform out-of-step early warning, and ensure the reliability of the system.
The out-of-step disconnection control method based on wide area information provided by the invention is applied to a sink node server, the sink node server is communicated with a power monitoring device group in an adjacent node area, and the method comprises the following steps:
receiving power information monitored by each power monitoring device in the power monitoring device group in real time;
integrating and classifying the power information according to the type of the power monitoring device;
sending the integrated and classified electric power information to a central server, wherein the central server is used for determining the step-out type of the current electric power system according to the electric power information;
and determining a control strategy of the current power system according to the step-out type, and executing a corresponding control action according to the control strategy.
According to the out-of-step disconnection control method based on the wide area information, an internet of things monitoring network comprising a power monitoring device group, a sink node server and a central server is established by adopting a monitoring strategy based on the internet of things, the sink node server is communicated with the power monitoring device group in the adjacent node area, the sink node server can receive the power information monitored by the power monitoring device group in the adjacent node area in real time, the efficiency of data transmission is ensured, the sink node server can integrate the power information, and finally the integrated power information is sent to the central server, so that the central server can collect the data monitored by the power monitoring devices, finally the integral operation condition of a power system is obtained, relevant early warning information is given, and the reliability and stability of the operation of the power system are ensured. The out-of-step disconnection control method based on the wide area information can prevent the wide area disconnection device from being mistakenly operated, can perform out-of-step early warning, guarantees the operation reliability of the power system, and achieves the purpose of improving the performance of the power system.
In addition, according to the out-of-step disconnection control method based on wide area information of the present invention, the following additional technical features may be further provided:
further, the step of receiving the power information monitored by each power monitoring device in the power monitoring device group in real time includes:
sending an online data packet to an agreed UDP port number in each power monitoring device through a UDP broadcast port in a UDP broadcast mode, wherein the online data packet is used for indicating to acquire the power information;
and receiving a reply data packet returned by the agreed UDP port number in each power monitoring device through a UDP broadcast port, wherein the reply data packet contains the power information.
Further, the step of integrally classifying the power information according to the type of the power monitoring device includes:
the power information monitored by the power monitoring device is converted into a digital signal through A/D conversion;
and classifying the digital signals according to the types of the power monitoring devices, so that the digital signals corresponding to different types of the power monitoring devices have unique identification IDs.
Furthermore, the number of the sink node servers is three, each sink node server is connected with two sets of relay protection devices in each node, the integrated and classified electric power information is sent to a central server, and the step of the central server for determining the step-out type of the current electric power system according to the electric power information comprises the following steps:
when one of the sink node servers judges that the systems on the two sides of the section are out of step and receives the confirmation information of any one sink node server in the other two sink node servers, the out-of-step type is a first out-of-step type;
when any two sink node servers receive the fault information of the third sink node server, one sink node server in the rest two sink node servers judges that the systems on the two sides of the section are out of step, and receives the confirmation information of the other sink node server, the out-of-step type is a second out-of-step type;
and when any aggregation node server receives the fault information of the other two aggregation node servers, the out-of-step type is a third out-of-step type.
Further determining a control strategy of the current power system according to the step-out type, and executing a corresponding control action according to the control strategy, wherein the step comprises the following steps:
when the step-out type is a first step-out type, controlling all nodes in the sink node server which is not step-out to cut off all contact lines on the section, and generating first early warning information;
when the step-out type is a second step-out type, controlling all nodes in the sink node server which is not step-out to disconnect all contact lines on the section, and generating second early warning information;
and when the desynchronizing type is a third desynchronizing type, locking the aggregation node servers which are not desynchronizing to release the splitting instruction to each node in any aggregation node server, and generating third early warning information.
Further, the first early warning information is that indication equipment corresponding to the sink node server which controls the step-out indicates the step-out node and the step-out degree by a first indication color and a first preset frequency;
the second early warning information is that the indication equipment corresponding to the sink node server controlling the desynchronizing indicates the desynchronizing node, the desynchronizing degree and the maintenance suggestion by a second indication color and a second preset frequency;
the third early warning information is that the indication device corresponding to the sink node server controlling the out-of-step performs out-of-step node indication, out-of-step degree indication, maintenance suggestion indication and maintenance countdown indication by using a third indication color and a third preset frequency.
Further, the method also comprises
When the out-of-step information of any sink node server is received, recording the current time as a first time, and simultaneously acquiring a second time of the out-of-step information time of the last sink node server;
judging whether the time difference between the first time and the second time is smaller than a preset time value or not;
and if the time difference is smaller than a preset time value, generating system maintenance information, wherein the system maintenance information is used for prompting a user to timely perform system maintenance on the current power system.
Further, the power device group comprises one or more of a voltage sensor, a current sensor, an electrostatic sensor, an inclination angle sensor, an optical fiber sensor, a temperature sensor, a pressure sensor, a flow sensor and a heat sensor.
Another embodiment of the present invention provides an out-of-step separation control system based on wide area information, which solves the problems that after a serious fault occurs in an existing power system, an out-of-step separation device based on local information usually acts after 2 to 3 oscillation cycles after the system is out of step, when an out-of-step oscillation section is composed of a plurality of power transmission channels, the judgment time of each channel is inconsistent, and the final separation time of the section is determined by the separation time of the power transmission channel which is separated at the latest, so that the power system cannot recover stability, and the loss is aggravated, and the satisfaction degree of power control experience of a user is improved.
The out-of-step separation control system based on the wide area information comprises the following components:
the acquisition module is used for receiving the electric power information monitored by each electric power monitoring device in the electric power monitoring device group in real time;
the integration module is used for integrating and classifying the power information according to the type of the power monitoring device;
the determining module is used for sending the integrated and classified electric power information to a central server, and the central server is used for determining the step-out type of the current electric power system according to the electric power information;
and the control module is used for determining a control strategy of the current power system according to the step-out type and executing a corresponding control action according to the control strategy.
Another embodiment of the present invention also proposes a storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described method.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart of an out-of-synchronization separation control method based on wide area information according to a first embodiment of the present invention;
FIG. 2 is a detailed flowchart of step S101 in FIG. 1;
FIG. 3 is a schematic diagram of step S103 of FIG. 1;
fig. 4 is a block diagram of a wide area information-based out-of-synchronization separation control system according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, a method for controlling out-of-synchronization disconnection based on wide area information according to a first embodiment of the present invention is applied to a sink node server, where the sink node server communicates with a power monitoring device group in an adjacent node area, and the method includes steps S101 to S104:
and S101, receiving power information monitored by each power monitoring device in the power monitoring device group in real time.
The power system is divided into a plurality of node areas according to the positions of the power equipment in specific implementation, and each node area is provided with a power monitoring device group related to power information monitoring. The power monitoring device group comprises one or more of a voltage sensor, a current sensor, an electrostatic sensor, an inclination angle sensor, an optical fiber sensor, a temperature sensor, a pressure sensor, a flow sensor and a heat sensor, and the voltage sensor, the current sensor, the electrostatic sensor, the inclination angle sensor, the optical fiber sensor, the temperature sensor, the pressure sensor, the flow sensor, the heat sensor and the like can be installed at corresponding positions as required to acquire power information data. In addition, the type of the power information monitoring device is not limited to the above power monitoring devices, and the type and number of the power monitoring devices may be configured according to actual situations, which is not limited herein.
In implementation, a plurality of sink node servers are configured at the same time, and one sink node server is responsible for communication with power monitoring devices in a plurality of adjacent node areas, for example, one sink node server is responsible for group communication with power monitoring devices in node areas of 2 adjacent sink node servers. In addition, one or more central servers are required to be configured and are responsible for data processing, result evaluation, control strategy distribution and the like. Therefore, an Internet of things monitoring network comprising the electric power monitoring device group, the sink node server and the central server is formed.
Taking one of the sink node servers as an example, the sink node server may receive, in real time, the power information monitored by each power monitoring device in the power monitoring device group in the node area of the sink node server adjacent to the sink node server, that is, the sink node server may receive, in real time, the power information monitored by each power monitoring device in the power monitoring device group in the node area of the 2 sink node servers adjacent to the sink node server.
Referring to fig. 2, the method for receiving the power information monitored by each power monitoring device in the power monitoring device group in real time includes the following steps:
and S1011, sending an online data packet to the negotiated UDP port number in each power monitoring device in a UDP broadcast mode through a UDP broadcast port, wherein the online data packet is used for indicating to acquire the power information.
S1012, receiving a reply packet returned by the UDP port number agreed in each of the power monitoring devices through the UDP broadcast port, where the reply packet includes the power information.
During specific implementation, a User Datagram Protocol (UDP) port number can be configured for each power monitoring device and the aggregation node server, the aggregation node server and each power monitoring device can agree in advance to monitor a fixed local UDP port number, that is, the aggregation node server and each power monitoring device have a UDP port number for interaction of online data packets, the online data packets can be used for indicating to acquire power information of the power monitoring devices, and the aggregation node server sends the Protocol data packets to the power monitoring devices, namely, sends requests for acquiring the power information to the power monitoring devices on behalf of the power monitoring devices.
Specifically, the sink node server may send the online data packet to the UDP port number agreed in the target power monitoring device in a UDP broadcast manner through the UDP broadcast port. Because UDP is a connectionless protocol, online data packets are sent to the UDP port number agreed in the power monitoring device in a UDP broadcast mode, and the transmission efficiency can be ensured.
Specifically, when the power monitoring device receives the online data packet through the agreed UDP port number, the power monitoring device may analyze the received online data packet, and then return a reply data packet to the sink node server, thereby implementing real-time reception of power information monitored by each power monitoring device in the power monitoring device group.
And S102, integrating and classifying the power information according to the type of the power monitoring device.
As described above, since the initial data monitored by the voltage sensor, the current sensor, the static sensor, the tilt sensor, the optical fiber sensor, the temperature sensor, the pressure sensor, the flow sensor, and the heat sensor is analog signals, it is necessary to integrate and process the power information monitored by each power monitoring device. The electric power information monitored by the electric power monitoring device is converted into digital signals after analog-to-digital conversion, then the digital signals are classified according to the type of the electric power monitoring device, so that the digital signals corresponding to different types of the electric power monitoring device have unique identification IDs, the working state of the monitoring device can be judged according to the identification IDs, and meanwhile, the position information of the corresponding fault electric power monitoring device can be determined according to the identification IDs, so that maintenance personnel can maintain and overhaul the fault electric power monitoring device in time.
Furthermore, the digital signals are classified according to the types of the power monitoring devices, so that the digital signals corresponding to different types of the power monitoring devices have unique identification IDs, a subsequent central processor can conveniently sort and summarize power information, and the data processing efficiency is improved. For example, an identification ID001Vol is assigned to the digital signal belonging to the voltage data, and an identification ID 002Ele is assigned to the digital signal belonging to the current data. The specific implementation form of the identification ID may be changed according to the actual situation, and is not limited herein. Furthermore, in addition to configuring the identification ID, the electric energy measuring devices belonging to different positions under the same identification ID may be configured to assign a serial ID for distinguishing data monitored by the electric power monitoring devices belonging to the same type but located at different positions, for example, the serial ID under ID001Vol includes serial IDs 001Vol0001, 001Vol0002, 001Vol0003, etc.; the sequence IDs under ID001Ele include sequences IDs 001Ele0001, 001Ele0002, 001Ele0003, and the like, each corresponding to a specific installation position of the power monitoring device. In this embodiment, a corresponding importance level ID is also assigned to each of the different types of power monitoring devices, and the importance level ID is used to indicate the importance level of the corresponding power monitoring device.
Specifically, standard threshold ranges corresponding to different identification IDs are stored in the central server in advance, and different sequence IDs under the same identification ID also correspond to different standard threshold ranges. Because the digital signals monitored by the different types of power monitoring devices all have an identification ID, and the power monitoring devices at different positions under the same identification ID are allocated with a sequence ID, the corresponding standard threshold range can be quickly found according to the identification ID and the sequence ID of one of the power monitoring devices, and then the actual data monitored by the power monitoring device is compared with the corresponding standard threshold range, so that the step-out type and the early warning mode of the power system are determined, for example, a monitoring person is informed in an alarm mode so as to respond in time, and meanwhile, a relevant processing suggestion can be given by combining big data so as to process and maintain the place where the abnormality occurs in time.
And S103, sending the integrated and classified electric power information to a central server, wherein the central server is used for determining the out-of-step type of the current electric power system according to the electric power information.
And step S104, determining a control strategy of the current power system according to the step-out type, and executing a corresponding control action according to the control strategy.
As described above, the integrated and classified power information is sent to the central server, so that the central server determines the out-of-step type of the current power system according to the received power information, and a user can execute a corresponding control strategy according to the out-of-step type of the current power system.
Furthermore, the number of the sink node servers is three, each sink node server is connected with two sets of relay protection devices in each node, and when one sink node server judges that systems on two sides of the section are out of step and receives confirmation information of any sink node server in the other two sink node servers, the out-of-step type is a first out-of-step type; when any two sink node servers receive the fault information of the third sink node server, one sink node server in the rest two sink node servers judges that the systems on the two sides of the section are out of step, and receives the confirmation information of the other sink node server, the out-of-step type is a second out-of-step type; and when any aggregation node server receives the fault information of the other two aggregation node servers, the out-of-step type is a third out-of-step type.
Specifically, referring to fig. 3, when the central server confirms that the systems on both sides of the cross section are out of step according to the information sent by one of the sink node servers and receives the confirmation result of at least one of the other two sink node servers, the current out-of-step type is the first out-of-step type, and at this time, a command is sent to the nodes in each sink node server to control the nodes in the sink node servers that are not out of step to disconnect all the contact lines on the cross section, and first warning information is generated. When the two sink node servers receive the fault information of the other sink node server, the normally operating sink node servers immediately lock the result confirmation function of the fault sink node server, namely, the normally operating sink node servers confirm that the systems on the two sides of the section are out of step according to the information sent by each node, and must receive the confirmation result of the other normally operating sink node servers, the current out-of-step type is a second out-of-step type, at the moment, a command is sent to the nodes in each sink node server, all the connection lines on the section are controlled to be disconnected by each node in the sink node servers which are not out of step, and second early warning information is generated. And when any one sink node server receives the fault information of the other two sink node servers, locking the sink node server to send a command for splitting the column to the node. The invention can improve the system reliability and reduce the probability of system misoperation. Meanwhile, the switching function of the judgment logic is adopted, so that the reliability of the sink node server under the condition of node failure in failure can be guaranteed.
Further, the first early warning information is that the indication device corresponding to the sink node server controlling the desynchronization indicates the desynchronization node and the desynchronization degree with a first indication color and a first preset frequency, for example, an indication lamp of the indication device is yellow, and the conversion frequency of the indication content of the desynchronization node and the desynchronization degree on the screen of the indication device is 2:1, namely the display time of the out-of-step node is 2S, and the out-of-step degree display time is 1S; the second early warning information is that the indication device corresponding to the sink node server controlling the desynchronizing performs indication of the desynchronizing node, the desynchronizing degree and the maintenance suggestion by using a second indication color and a second preset frequency, if an indication lamp of the indication device is orange, and the conversion frequency of the indication content of the desynchronizing node, the desynchronizing degree and the maintenance suggestion on the screen of the indication device is 2:1:3, namely the display time of the out-of-step node is 2S, the out-of-step degree display time is 1S, and the maintenance suggestion display time is 3S; the third early warning information is that the indication device corresponding to the sink node server controlling the desynchronization performs desynchronization node, desynchronization degree, maintenance suggestion and maintenance countdown indication by using a third indication color and a third preset frequency, for example, an indication lamp of the indication device is red, and the conversion frequency of the indication content of the desynchronization node, the desynchronization degree, the maintenance suggestion and the maintenance countdown on the screen of the indication device is 2:1:3:1, namely the display time of the out-of-step node is 2S, the out-of-step degree display time is 1S, the maintenance suggestion display time is 3S, and the maintenance countdown display time is 1S.
It is to be understood that the above mentioned first conversion frequency, second conversion frequency and third conversion frequency are only examples, and the indication content in other embodiments of the present invention may also set other conversion frequencies according to practical situations, and is not limited herein.
According to the out-of-step disconnection control method based on the wide area information, which is provided by the invention, an internet of things monitoring network comprising a power monitoring device group, a sink node server and a central server is established by adopting a monitoring strategy based on the internet of things, the sink node server is arranged to communicate with the power monitoring device group in the adjacent node area, the sink node server can receive the power information monitored by the power monitoring device group in the adjacent node area in real time, the efficiency of data transmission is ensured, the sink node server can integrate and process each power information, and finally the integrated and processed power information is sent to the central server, so that the central server can collect the data monitored by each power monitoring device, the integral operation state of a power system is finally obtained, relevant early warning information is given, and the reliability and stability of the operation of the power system are ensured. The out-of-step disconnection control method based on the wide area information can prevent the wide area disconnection device from being mistakenly operated, can perform out-of-step early warning, guarantees the operation reliability of the power system, and achieves the purpose of improving the performance of the power system.
It should be further noted that, in other embodiments of the present invention, when the out-of-step information of any aggregation node server is received, the current time is recorded as a first time, and a second time of the out-of-step information time of the last aggregation node server is obtained at the same time; judging whether the time difference between the first time and the second time is smaller than a preset time value or not; and if the time difference is smaller than a preset time value, generating system maintenance information, wherein the system maintenance information is used for prompting a user to timely perform system maintenance on the current power system.
As described above, when the out-of-step information of any sink node server is received, the current time is recorded as the first time, the second time of the out-of-step information time of the last sink node server is obtained, and whether the time difference between the first time and the second time is smaller than the preset time value or not is judged. The time difference between the two times is, for example, 2 months, and the preset time is, for example, 3 months, since the time difference is smaller than the preset time value, it indicates that the sink node server and the nodes therein are not maintained for a long time, and only in this case, a system maintenance prompt dialog box pops up to prompt the user whether to maintain the sink node server and the nodes therein. The method has the advantages that the user can be reminded of maintaining the sink node server and the nodes in the sink node server regularly, and the desynchronization caused by long-term non-maintenance of the power equipment or system aging is avoided, so that the operation reliability of the power system is improved. It can be understood that, in other embodiments of the present invention, the time of the system maintenance prompt may also be the number of times that the user refuses to perform system maintenance according to the system maintenance prompt within three months, that is, the number of times that the user refuses to adopt the system maintenance recommended by the control device according to the step-out time or the type of the sink node server within three months, or the degree of completion of the maintenance task, which is not limited herein.
Referring to fig. 4, based on the same inventive concept, a system for controlling out-of-step separation based on wide area information according to a second embodiment of the present invention includes:
and the obtaining module 10 is configured to receive, in real time, information of electric power monitored by each electric power monitoring device in the electric power monitoring device group.
Specifically, an online data packet is sent to a UDP port number agreed in each power monitoring device in a UDP broadcast manner through a UDP broadcast port, where the online data packet is used to indicate to acquire the power information; and receiving a reply data packet returned by the negotiated UDP port number in each power monitoring device through a UDP broadcast port, wherein the reply data packet comprises the power information. The power device set comprises one or more of a voltage sensor, a current sensor, an electrostatic sensor, an inclination angle sensor, an optical fiber sensor, a temperature sensor, a pressure sensor, a flow sensor and a heat sensor.
And the integration module 20 is used for integrating and classifying the power information according to the type of the power monitoring device.
Specifically, the power information monitored by the power monitoring device is converted into a digital signal through A/D conversion; and classifying the digital signals according to the types of the power monitoring devices, so that the digital signals corresponding to different types of the power monitoring devices have unique identification IDs.
And a determining module 30, configured to send the integrated and classified power information to a central server, where the central server is configured to determine a step-out type of the current power system according to the power information.
Specifically, the number of the sink node servers is three, each sink node server is connected with two sets of relay protection devices in each node, and when one sink node server judges that systems on two sides of a section are out of step and receives confirmation information of any sink node server in the other two sink node servers, the out-of-step type is a first out-of-step type; when any two sink node servers receive the fault information of the third sink node server, one sink node server in the rest two sink node servers judges that the systems on the two sides of the section are out of step, and receives the confirmation information of the other sink node server, the out-of-step type is a second out-of-step type; and when any aggregation node server receives the fault information of the other two aggregation node servers, the out-of-step type is a third out-of-step type.
In this embodiment, the determining module 30 is further configured to record, when the out-of-step information of any aggregation node server is received, the current time as a first time, and obtain a second time of the out-of-step information time of the last aggregation node server at the same time; judging whether the time difference between the first time and the second time is smaller than a preset time value or not; and if the time difference is smaller than a preset time value, generating system maintenance information, wherein the system maintenance information is used for prompting a user to timely perform system maintenance on the current power system.
And the control module 40 is configured to determine a control strategy of the current power system according to the step-out type, and execute a corresponding control action according to the control strategy.
Specifically, when the step-out type is a first step-out type, controlling each node in the sink node server which is not step-out to disconnect all contact lines on the section, and generating first early warning information; when the step-out type is a second step-out type, controlling all nodes in the sink node server which is not step-out to disconnect all contact lines on the section, and generating second early warning information; and when the desynchronizing type is the third desynchronizing type, locking the non-desynchronized sink node servers to release the splitting instruction to each node in any sink node server, and generating third early warning information.
According to the out-of-step disconnection control system based on the wide area information, an internet of things monitoring network comprising a power monitoring device group, a sink node server and a central server is established by adopting a monitoring strategy based on the internet of things, the sink node server is communicated with the power monitoring device group in the adjacent node area, the sink node server can receive the power information monitored by the power monitoring device group in the adjacent node area in real time, the efficiency of data transmission is ensured, the sink node server can integrate each power information, and finally the integrated power information is sent to the central server, so that the central server can collect the data monitored by each power monitoring device, finally the integral operation condition of the power system is obtained, relevant early warning information is given, and the reliability and stability of the operation of the power system are ensured. The out-of-step disconnection control method based on the wide area information can prevent the wide area disconnection device from being operated mistakenly, can perform out-of-step early warning, guarantees the operation reliability of the power system, and achieves the purpose of improving the system performance of the power system.
Technical features and technical effects of the out-of-step separation control system based on the wide area information provided by the embodiment of the invention are the same as those of the method provided by the embodiment of the invention, and are not repeated herein.
Furthermore, an embodiment of the present invention also proposes a storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the above-mentioned method.
Furthermore, an embodiment of the present invention also proposes a control device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the program.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. An out-of-step disconnection control method based on wide area information is applied to a sink node server, the sink node server is communicated with a power monitoring device group in an adjacent node area, and the method comprises the following steps:
receiving power information monitored by each power monitoring device in the power monitoring device group in real time;
integrating and classifying the power information according to the type of the power monitoring device;
sending the integrated and classified electric power information to a central server, wherein the central server is used for determining the step-out type of the current electric power system according to the electric power information;
determining a control strategy of the current power system according to the step-out type, and executing a corresponding control action according to the control strategy;
the number of the sink node servers is three, each sink node server is connected with two sets of safety automatic devices in each node, the integrated and classified electric power information is sent to a central server, and the central server is used for determining the step-out type of the current electric power system according to the electric power information and comprises the following steps:
when one of the sink node servers judges that the systems on the two sides of the section are out of step and receives the confirmation information of any one sink node server in the other two sink node servers, the out-of-step type is a first out-of-step type;
when any two sink node servers receive the fault information of the third sink node server, one sink node server in the rest two sink node servers judges that the systems on the two sides of the section are out of step, and receives the confirmation information of the other sink node server, the out-of-step type is a second out-of-step type;
and when any one sink node server receives the fault information of the other two sink node servers, the out-of-step type is a third out-of-step type.
2. The wide area information-based out-of-step separation control method according to claim 1, wherein the step of receiving the power information monitored by each power monitoring device in the power monitoring device group in real time comprises:
sending an online data packet to an agreed UDP port number in each power monitoring device through a UDP broadcast port in a UDP broadcast mode, wherein the online data packet is used for indicating to acquire the power information;
and receiving a reply data packet returned by the agreed UDP port number in each power monitoring device through a UDP broadcast port, wherein the reply data packet contains the power information.
3. The out-of-step separation control method based on wide area information as claimed in claim 1, wherein the step of performing integrated classification on the power information according to the type of the power monitoring device comprises:
the power information monitored by the power monitoring device is converted into a digital signal through A/D conversion;
and classifying the digital signals according to the types of the power monitoring devices, so that the digital signals corresponding to different types of the power monitoring devices have unique identification IDs.
4. The wide area information-based out-of-synchronization separation control method according to claim 1, wherein the step of determining a control strategy of a current power system according to the out-of-synchronization type and executing a corresponding control action according to the control strategy comprises:
when the step-out type is a first step-out type, controlling all nodes in the sink node server which is not step-out to cut off all contact lines on the section, and generating first early warning information;
when the step-out type is a second step-out type, controlling all nodes in the sink node server which is not step-out to disconnect all contact lines on the section, and generating second early warning information;
and when the desynchronizing type is the third desynchronizing type, locking the non-desynchronized sink node servers to release the splitting instruction to each node in any sink node server, and generating third early warning information.
5. The out-of-sync separation control method based on wide area information according to claim 4,
the first early warning information is used for indicating the out-of-step node and the out-of-step degree by indicating equipment corresponding to the sink node server for controlling the out-of-step with a first indication color and a first preset frequency;
the second early warning information is used for indicating the out-of-step node, the out-of-step degree and the maintenance suggestion by indicating equipment corresponding to the sink node server which controls the out-of-step according to a second indication color and a second preset frequency;
the third early warning information is that the indication device corresponding to the sink node server controlling the out-of-step performs out-of-step node indication, out-of-step degree indication, maintenance suggestion indication and maintenance countdown indication by using a third indication color and a third preset frequency.
6. The wide-area-information-based out-of-sync separation control method according to claim 1, further comprising
When the out-of-step information of any aggregation node server is received, recording the current time as a first time, and simultaneously acquiring a second time of the out-of-step information time of the last aggregation node server;
judging whether the time difference between the first time and the second time is smaller than a preset time value or not;
and if the time difference is smaller than a preset time value, generating system maintenance information, wherein the system maintenance information is used for prompting a user to timely perform system maintenance on the current power system.
7. The wide-area information based out-of-step separation control method according to any one of claims 1 to 6, wherein the power monitoring device group comprises one or more of a voltage sensor, a current sensor, a static sensor, an inclination sensor, a fiber optic sensor, a temperature sensor, a pressure sensor, a flow sensor and a heat sensor.
8. An out-of-step separation control system based on wide area information, applied to a sink node server which communicates with a group of power monitoring devices in an adjacent node area, the system comprising:
the acquisition module is used for receiving the electric power information monitored by each electric power monitoring device in the electric power monitoring device group in real time;
the integration module is used for integrating and classifying the power information according to the type of the power monitoring device;
the determining module is used for sending the integrated and classified electric power information to a central server, and the central server is used for determining the step-out type of the current electric power system according to the electric power information; the number of the sink node servers is three, each sink node server is connected with two sets of safety automatic devices in each node, the integrated and classified electric power information is sent to a central server, and the central server is used for determining the step-out type of the current electric power system according to the electric power information and specifically comprises the following steps:
when one of the sink node servers judges that the systems on the two sides of the section are out of step and receives confirmation information of any one sink node server in the other two sink node servers, the out-of-step type is a first out-of-step type;
when any two sink node servers receive the fault information of the third sink node server, one sink node server in the rest two sink node servers judges that the systems on the two sides of the section are out of step, and receives the confirmation information of the other sink node server, the out-of-step type is a second out-of-step type;
when any one sink node server receives the fault information of the other two sink node servers, the out-of-step type is a third out-of-step type;
and the control module is used for determining a control strategy of the current power system according to the step-out type and executing a corresponding control action according to the control strategy.
9. A readable storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the wide area information based out-of-step separation control method according to any one of claims 1 to 7.
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