Intelligent operation and maintenance management platform for power secondary system

Abstract

The present invention relates to the technical field of power system operation and maintenance, and disclosed are an intelligent operation and maintenance management platform and system for a power secondary system. The platform comprises an interval layer, a transport layer, a station control layer, a system layer, a platform layer, an application layer, and a disaster recovery backup center. By means of acquiring data from a protection information system and an external information system and sharing data with other application platforms of the secondary system, the invention solves the current problems of omissions, repeatability, and isolation in data acquisition, while balancing the security requirements of a production control zone with the demands for advanced application development in an information management zone. Ultimately, comprehensive data acquisition and in-depth data mining are achieved, enabling smoother production, operation, and maintenance of the power secondary system, meeting the specialized needs of various professional operators, and improving the quality and efficiency of the secondary system.

Description

An intelligent operation and maintenance control platform for power secondary systems Technical Field

[0001] The present invention relates to the technical field of power system operation and maintenance, and in particular to an intelligent operation and maintenance control platform for a power secondary system. Background Art

[0002] The present invention belongs to the technical field of power system operation and maintenance, and relates to a digital production operation and maintenance management and control platform for a power system.

[0003] The traditional manual-based secondary system operation and maintenance model is no longer able to further improve the quality and efficiency of secondary system operation and maintenance. Improving the quality and efficiency of secondary system operation and maintenance is a topic that urgently needs research and solution. Technologies such as big data, the Internet of Things, and artificial intelligence are creating opportunities for the innovative development of secondary system operation and maintenance technology.

[0004] At present, the relevant technologies of various secondary equipment are booming, constantly evolving from manual judgment to intelligent algorithms, and from on-site work to remote operation, which essentially improves the quality and efficiency of secondary system operation and maintenance.

[0005] Patent publication number CN114374269A discloses an intelligent patrol system based on a secondary equipment operation and maintenance control platform for remote patrol, and the patrol results are synchronized to Zone III through positive isolation equipment; patent publication number CN111934421A discloses a substation remote operation and maintenance system based on a container architecture for remotely operating secondary equipment through the safety zone I network - power dispatching data network; patent publication number CN106709580A discloses a substation secondary system operation and maintenance cloud platform, which supports substation operators to carry out monitoring, control and maintenance business through the safety zone I panoramic data platform and the safety III panoramic data platform. The applications described in the above patents involve safety zone I, and the system function scalability is insufficient.

[0006] Patent publication number CN114520543A discloses a secondary equipment operation and maintenance system for the purpose of monitoring, operating and accepting secondary equipment. The monitoring is based on the collected panoramic information of the secondary equipment; patent publication number CN110739770A discloses a relay protection management and control system based on information fusion, which integrates existing systems to perform panoramic data modeling and conduct fault analysis. The panoramic information described in the above patent is an integration of the internal information of existing secondary equipment. It lacks the external operating information that the safe operation of the secondary equipment depends on, and is insufficient to fully reflect the action and operation status of the secondary equipment. The panoramic information is used to support single business scenarios and is insufficient to support multi-business integration.

[0007] Patent publication number CN106655522A discloses a master station system suitable for the operation and maintenance management of power grid secondary equipment, which is intended for substation operators to monitor and inspect secondary equipment; patent publication number CN111641263A discloses a secondary equipment intelligent operation and maintenance system and method based on three-dimensional navigation, which is intended to guide substation maintenance personnel to carry out on-site maintenance operations. The above patents only involve some business groups of the secondary system production and operation.

[0008] To achieve the deep integration of numerous new technologies and methods for secondary equipment, centralized scheduling, and further improve the quality and efficiency of secondary system operation and management, the following issues still need to be resolved:

[0009] There are many secondary devices and a large amount of information. Many secondary device-related platforms and systems need to collect data, but there is a lack of data interaction between the platforms and systems, the degree of integration is low, and the data is relatively isolated, resulting in duplication and omissions in data collection. This in turn leads to the inability to achieve unified management of the various platform systems and the inability of secondary staff to be uniformly deployed, resulting in low quality and efficiency in the operation, maintenance and management of secondary equipment.

[0010] The network portion of the existing platforms and systems is located in the production control area (Zones I and II). This area has a higher security margin and can collect some key information and provide control functions, but the development of some advanced applications is difficult or even impossible. Another portion of the platforms and systems is located in the information management area (Zones III and IV). This area can accommodate advanced application development, but the collection and control of some key information cannot be carried out, and the security margin is lower than that of the production control area.

[0011] At present, the collection of external operating information of the secondary system is not comprehensive enough and is relatively scattered. In addition, it has not been effectively integrated with the existing power grid management platform, OMS system, and power grid management system, resulting in the inability to monitor, maintain, and manage the external operating information of the secondary system.

[0012] The mining application of collected secondary system data is not in-depth enough. Data processing methods generally focus on a single type of data or a single system. When large amounts of data are uploaded, there is a lack of unified methods and logic for data management and calculation. When diverse data types are uploaded, combining different types and aspects of data for analysis can lead to more conclusions and realize more functions.

[0013] The production and operation and maintenance business of the power secondary system can be divided into five major parts: "operation, monitoring, inspection, maintenance, and dispatching". The existing offline or online management and control mode only involves part of the business, and the closed-loop management of the entire business process has not been truly realized. In addition, each business process involves substation operators, substation repair and testing personnel, professional managers of the dispatching department, and on-duty dispatchers. The business content and needs of different groups are different.

[0014] To sum up, it is urgent to establish a data-integrated digital system to avoid data omissions, duplications, and isolation; and to balance the needs of production control area security and information management area advanced application development; and ultimately achieve comprehensive data collection and in-depth mining, so that the production and operation of the power secondary system will be smoother, meet the professional needs of various professional operators, and achieve quality and efficiency improvement of the secondary system.

[0015] Summary of the Invention

[0016] In view of the above problems in the prior art, the present invention is proposed.

[0017] Therefore, the present invention provides an intelligent operation and maintenance management and control platform and system for the power secondary system, which can solve the problems of data isolation, duplication and omission among various platforms of the traditional secondary system; it is difficult to take into account the security of the production control area and the development of advanced applications in the information management area at the same time; the secondary information collection is not comprehensive enough, and the data mining application is not in-depth enough; the existing secondary platform is difficult to adapt to the professional needs of various professionals.

[0018] To solve the above technical problems, the present invention provides the following technical solutions: an intelligent operation and maintenance control platform for a power secondary system, comprising:

[0019] Interval layer, transport layer, station control layer, platform layer, system layer, application layer, and disaster recovery center;

[0020] The interval layer includes all wired transmission secondary equipment and wireless transmission collection units in the substation; the secondary equipment includes protection devices, fault recording devices, traveling wave ranging devices, pressure plate monitoring devices, power quality devices and AC / DC systems, and the data of the secondary equipment is sent to the wired transmission layer via wired transmission; the wireless transmission collection unit includes a MEMS power supply and communication module, a MEMS microsensor, and a MEMS microactuator, and collects the external operation information of the secondary system wirelessly transmitted in the substation through micro-electromechanical systems and radio frequency MEMS technology. The wireless transmission collection unit is connected to the wireless transmission layer and sends the collected external operation information of the secondary system to the wireless receiving host of the wireless transmission layer; the external operation information of the secondary system is the operation status information of the secondary system associated equipment, the behavior information of the on-site operators of the relay protection device, and the substation environment information.

[0021] As a preferred solution of the intelligent operation and maintenance management platform for the power secondary system described in the present invention, wherein: the transmission layer connects the bay layer and the station control layer, forwards the data of the bay layer to the station control layer, the transmission layer includes a wired transmission layer and a wireless transmission layer, wherein the wired transmission layer includes a zone I wired transmission layer and a zone III wired transmission layer, the zone I wired transmission layer includes a Baoxin substation switch and a Baoxin substation communication acquisition module, the Baoxin substation switch is connected to the secondary equipment of the station communication protocol, and the Baoxin substation communication acquisition module is connected to the secondary equipment of the station communication protocol;

[0022] The wired transmission layer of zone III includes an external substation switch, which is connected to a bay layer device of the communication protocol for sending data from the external substation, and sends the data of the bay layer device to the external substation;

[0023] The wireless transmission layer includes a wireless receiving host, which collects data sent by the collection unit of the wireless transmission in the collection station. The components of the wireless receiving host include an antenna, a radio frequency front end, an intermediate frequency amplifier, an intermediate frequency filter, a detector and a demodulator.

[0024] As a preferred solution of the intelligent operation and maintenance control platform for the power secondary system described in the present invention, the station control layer includes a trustworthy substation and a foreign trustworthy substation, wherein the trustworthy substation serves as a link between the bay layer and the main station platform through the transmission layer, and sends commands to the bay layer through the transmission layer, thereby changing the set value status and pressure plate status of the secondary equipment;

[0025] The external communication substation collects the external operation information of the secondary system. The external communication substation has a data collection function and collects the external operation information of the secondary system sent from the wired transmission layer through the external communication substation switch of the transmission layer, including AC and DC system information and power quality information;

[0026] Collects external operating information of the secondary system sent from the wireless transmission layer, including information that cannot be transmitted via wired transmission in the strong interference environment of the outdoor switch field. The external communication substation does not have a control function;

[0027] The security substation in the station control layer is arranged in the security zone I and is connected to the zone I platform of the platform layer through the dispatching data network. The external security substation is arranged in the security zone III and is connected to the zone III platform of the platform layer through the integrated data network. Both the dispatching data network and the integrated data network are equipped with vertical encryption devices.

[0028] The station control layer receives the control commands issued by the platform layer security zone I and forwards them to the bay layer through the transport layer, thus realizing the platform layer's control function over the bay layer equipment in the substation;

[0029] The station control layer receives data sent by the interval layer through the transport layer and sends it to the platform layer.

[0030] As a preferred solution of the intelligent operation and maintenance control platform for the power secondary system described in the present invention, the platform layer is connected to the station control layer, receives data sent by the station control layer, and sends control commands to the station control layer through the security zone I. At the same time, it is connected to the system layer and exchanges data with the system layer;

[0031] The platform layer includes a control and collection area and a data management and application area. The control and collection area includes the control function of the station control layer for collecting and verifying trustworthy data, ensuring the security of control and the security of collected data. The data management and application area includes collecting external trust data and conducting advanced application development and in-depth data mining.

[0032] The control acquisition area and the data management application area are connected through a forward isolation device and a reverse isolation device. The forward isolation device and the reverse isolation device are used to isolate the data interaction between the security area I and the security area III, and adopt a forward isolation TCP penetration method.

[0033] As a preferred solution of the power secondary system intelligent operation and maintenance control platform described in the present invention, the forward isolated TCP penetration method includes establishing an xb.tcp penetration adapter and a TCP_svr forwarding receiver on the security zone I server, and establishing an xb.tcp adapter on the security zone III server. Path 1 of the platform's control and acquisition zone is to send a standard TCP message to the TCP_svr forwarding receiver to convert it into an xb_tcp message, and then send it to the xb.tcp penetration adapter. Path 2 of the platform's control and acquisition zone is to directly send the xb_tcp message to the xb.tcp penetration adapter. The xb.tcp penetration adapter generates a forward drive and establishes a TCP mapping with the data management application zone server. The unidirectional TCP message is sent to a specific port of the xb.tcp adapter in the data management application zone through a forward isolation device. Finally, the data is stored and decoded by the platform's data management application zone.

[0034] The forward isolated TCP penetration method is implemented using xb_gl_proxy, where the configuration items are:

[0035] Establish the mapping of CHANNEL SVR in the data management application area to the control acquisition area, CHANNEL REMOTE SVR = 10.10.10.2:xxxx

[0036] Adapter service port, PROXY PORT = xxxx

[0037] The control acquisition area TCP is connected to the xxxx port of this service. Through the xb penetration mechanism, it is equivalent to connecting to the user machine in the data management application area. zf1=xxxx 192.1.1.2:xxxx

[0038] The control acquisition area receives remote control commands from the power dispatch automation OCS system and sends the remote control commands to the security substation of the station control layer, including remote control modification of set values ​​and remote control of soft pressure plates;

[0039] The data management application area is connected to the OMS system. The data management application area retrieves the corresponding fixed value sheet and power outage application form from the OMS system, and sends the conclusion of the real-time data on the station side and the opinions of the application review personnel to the power outage application module of the OMS system;

[0040] The data management application area is connected to the power grid management system to retrieve the equipment ledger data of the power grid management system;

[0041] The data management application area is connected to the video image monitoring system to retrieve videos of the substation environment before and after the fault, videos of the operating personnel, and videos of the equipment in the substation. Based on the state of the environment, the state of the equipment, and the behavior of the people, a pre-fault accident analysis is conducted to determine whether the fault is caused by environmental, equipment, and human factors. After the fault, the state of the environment and the state of the equipment can be used to quickly determine whether the conditions for power restoration are met, thereby reducing the power outage time.

[0042] The data management application area is connected to the substation management platform and sends the analysis result data obtained by the advanced application to the substation management platform.

[0043] As a preferred solution of the intelligent operation and maintenance control platform for a power secondary system described in the present invention, wherein: the application layer is directly connected to the platform layer;

[0044] The application layer includes scheduling, operation, and repair and test extension workstations;

[0045] The disaster recovery backup center includes a disaster recovery system and a storage backup system.

[0046] As a preferred solution of the intelligent operation and maintenance management platform for power secondary systems described in the present invention, wherein: the advanced applications include equipment full life cycle management and defect modeling;

[0047] The equipment life cycle management includes acceptance inspection of the equipment to be put into operation, and the acceptance records are recorded in the acceptance management module of the platform. At the same time, a closed-loop acceptance plan is established. After the acceptance is qualified, the equipment is put into operation. If the acceptance is unqualified, the construction unit will make rectifications. The new equipment that has passed the acceptance will be put into production, and maintenance work will be carried out when it is put into production.

[0048] As a preferred solution of the intelligent operation and maintenance control platform for the power secondary system described in the present invention, the defect modeling includes: the platform defect management module collecting abnormal alarm signals from the remote patrol module or the centralized monitoring module, and the defect management module automatically collecting key information of the alarm based on the alarm information;

[0049] The key information includes device name, alarm level, alarm appearance, and alarm logic;

[0050] The alarm phenomenon is analyzed and judged by the platform based on the alarm logic in the rule library of the equipment and the alarm level.

[0051] The alarm logic includes numerical alarms and status alarms;

[0052] The numerical alarm includes the numerical values ​​that reach and do not reach the first threshold value, and the actual numerical value is calculated and compared with the alarm setting value. When the calculation result is consistent with the logic, the alarm is confirmed and automatically transferred to the defect module. When the calculation result is inconsistent with the logic, it is a false alarm and the logic ends. When the main system detects that the main transformer protection sends an overload alarm, the alarm logic module calls the setting value of the main transformer protection overload in the rule library, and combines the real-time current analysis to determine whether the alarm setting value is reached. If the alarm setting value is reached, the alarm is confirmed and transferred to the defect module. If the alarm setting value is not reached, it is determined to be a false alarm and the logic ends.

[0053] The status alarm includes the alarm signal issued by the abnormal status of the detection equipment. The equipment name and status are confirmed again according to the alarm signal. If the equipment status meets the alarm information, the alarm is confirmed and automatically transferred to the defect module. The key information of the alarm signal is automatically converted into defect factors. At the same time, the operation information of the alarm equipment is retrieved and defect modeling is performed. i =μ i +a i1 f i1 +a i2 f i2 +a i3 f i3 +a i4 f i4 +ε i (1≤i≤12)

[0054] Among them, X i The probability of defect factors such as plug-in damage, terminal loosening, label error, program stuck, secondary circuit connection error, air switch tripping, insulation abnormality, parasitic circuit, auxiliary component water ingress, auxiliary component damage, program loopholes, and alarm definition errors occurs. f1, f2, f3, and f4 represent four common factors. ij It's X i In the common factor f iLoad on, μ i It's X i The mean of ε i are other factors that are not common factors;

[0055] Transform the above formula and calculate it using matrix method to get X=μ+Af+ε

[0056] Among them, f = (f1, f2, f3, f4) is the common factor vector, ε = (ε1, ε2, ..., ε 12 ) is a special factor vector;

[0057] Then A 12×4 =a ij (1≤i≤12), (1≤j≤4) is the factor load matrix of the defect cause, the rank of the matrix A is m, when E(f)=0, E(ε)=0, Var(f=I, When 1≤p≤12 and cov(f,ε)=E(fε)=0, Var(x)=E[(X-μ)(X-μ)′]=AA′+D, then the element a of A ij That is, the probability of the cause of the defect and the common factor f i The covariance between: a ij =cov(X i ,f i )=ρ(X i ,f i )

[0058] Among them, X i (1≤i≤12) represents the possibility of 12 possible causes of defects, which are plug-in damage, loose terminals, incorrect identification, program jamming, incorrect secondary circuit connection, air switch tripping, insulation abnormality, parasitic circuit, water ingress to auxiliary components, damage to auxiliary components, program vulnerabilities, and incorrect alarm definition. f1, f2, f3, and f4 represent four common factors. ij It's X i In the common factor f i Load on, μ i It's X i The mean of ε i are other factors that are not common factors;

[0059] The degree to which the probability of the cause of the defect depends on the four common factors is expressed by the sum of squares of the row elements of A.

[0060] but (1≤i≤12),

[0061] in represents the contribution of the common factor to the probability of the cause of the defect, Indicates the contribution of special factors to the possibility of defect occurrence, and finally calculates the maximum value of X i , then the most likely defect cause is item i;

[0062] Based on the cause of the defect, defect level, defective equipment, defect occurrence time, and key information such as the time to eliminate the defect, the defect work order is automatically filled out and the work is automatically assigned to the maintenance personnel.

[0063] A computer device includes a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, it implements the steps of any one of the methods of an intelligent operation and maintenance control platform for a power secondary system.

[0064] A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of any one of the methods of an intelligent operation and maintenance control platform for a power secondary system are implemented.

[0065] The beneficial effects of the present invention are: 1. Breaking through the barriers of many secondary platforms, improving data interaction, realizing data sharing, eliminating data isolation, avoiding duplication or omission of data collection, realizing unified management of the platform, unified deployment of operators, and improving the operation and maintenance and management quality of secondary equipment.

[0066] 2. Adopting the platform architecture of "Zone I Collection + Control" and "Zone III Collection + Advanced Application Development", the data of Zone I is mapped to Zone III for advanced application development. This breaks the situation of data silos in the secure Zone I and insufficient data in Zone III, realizes information sharing, ensures the security of Zone I while taking into account the needs of advanced application development in Zone III.

[0067] 3. Through the comprehensive collection, monitoring, management and analysis of the secondary system's external operating information, the shortcomings of the existing system's incomplete collection are compensated, and the collection and management of all information on relay protection devices are realized. The above information, combined with the existing system and platform, can carry out a deeper integration of all relay protection information, thereby better operating, maintaining and managing relay protection equipment.

[0068] 4. Combined with the "rule library", "label library" and "grammar library" in the platform, intelligent rules, labels and grammars can be used to make more efficient and accurate judgments on daily work such as common constant value data, inspection and maintenance data, fault data, etc. in the secondary system, effectively solving the problems of insufficient data mining and inadequate function realization in the existing platform.

[0069] 5. It includes five major parts: "operation, monitoring, inspection, maintenance, and scheduling", which truly realizes the closed-loop management of the entire business process, meets the professional needs and business scenarios of maintenance personnel, operation personnel, and scheduling personnel, and thus helps secondary operators to reduce burdens and increase efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0071] FIG1 is a diagram showing the structure of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0072] FIG2 is a diagram showing the structure of a wireless transmission micro-electromechanical system of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0073] FIG3 is a structural diagram of a forward-isolated TCP penetration method for an intelligent operation and maintenance control platform of a power secondary system provided by an embodiment of the present invention.

[0074] FIG4 is a flow chart of a method for managing the entire equipment life cycle of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0075] FIG5 is a distribution diagram of applications in security zones I and III of an intelligent operation and maintenance management platform for a power secondary system provided by an embodiment of the present invention.

[0076] FIG6 is a diagram of an intelligent processing method for alarm signals of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0077] FIG7 is a centralized monitoring interface of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0078] FIG8 is a panoramic data interface of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0079] FIG9 is a data maintenance interface of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0080] FIG10 is a remote inspection interface of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0081] FIG11 is a smart dispatching interface of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention.

[0082] FIG12 is an intelligent maintenance interface of an intelligent operation and maintenance control platform for a power secondary system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0083] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without making creative efforts should fall within the scope of protection of the present invention.

[0084] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0085] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0086] The present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0087] In the description of the present invention, it should be noted that the terms "upper, lower, inner, and outer" and other references to orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0088] In this disclosure, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed, removable, or integral connections. They may also refer to mechanical, electrical, or direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure.

[0089] Example 1

[0090] 1 to 12 , which illustrate a first embodiment of the present invention, provide a power secondary system intelligent operation and maintenance management platform and system, including:

[0091] As shown in Figure 1, there are the bay layer, transport layer, station control layer, platform layer, system layer, application layer, and disaster recovery center.

[0092] The bay layer includes all wired transmission secondary equipment and wireless transmission acquisition units in the substation;

[0093] The secondary equipment includes a protection device, a fault recording device, a traveling wave ranging device, a pressure plate monitoring device, a power quality device and an AC / DC system. The data of the secondary equipment is sent to the wired transmission layer via wired transmission;

[0094] The wireless transmission collection unit adopts Internet of Things technology, including MEMS power supply and communication module, MEMS microsensor, MEMS microactuator, and adopts micro-electromechanical system and radio frequency MEMS technology to collect the external operation information of the secondary system wirelessly transmitted in the substation. The wireless transmission collection unit is connected to the wireless transmission layer and sends the collected external operation information of the secondary system to the wireless receiving host of the wireless transmission layer;

[0095] The secondary system external operation information includes the operation status information of the secondary system related equipment, the behavior information of the on-site operators of the relay protection device, and the substation environment information.

[0096] The transmission layer connects the bay layer and the station control layer, and forwards the data of the bay layer to the station control layer. The transmission layer includes a wired transmission layer and a wireless transmission layer, wherein the wired transmission layer includes a zone I wired transmission layer and a zone III wired transmission layer. The zone I wired transmission layer includes a Baoxin substation switch and a Baoxin substation 103 communication acquisition module. The Baoxin substation switch is connected to a secondary device of the 61850 communication protocol within the station, and the Baoxin substation 103 communication acquisition module is connected to a secondary device of the 103 communication protocol within the station.

[0097] The wired transmission layer of Zone III includes an external substation switch, which is connected to the bay layer device that needs to send data to the external substation using the 61850 communication protocol, and sends the data of the device to the external substation;

[0098] As shown in Figure 2, the wireless transmission layer includes a wireless receiving host, which mainly collects data sent by the collection unit of wireless transmission within the collection station. The main components of the wireless receiving host include antenna, RF front end, intermediate frequency amplifier, intermediate frequency filter, detector, and demodulator. Among them, the antenna is a device for receiving radio signals, converting radio signals into electrical signals, and transmitting the electrical signals to the RF front end. The RF front end is the core part of the RF receiver, which is mainly responsible for converting electrical signals into intermediate frequency signals and amplifying and filtering them. The intermediate frequency amplifier and intermediate frequency filter further amplify and filter the intermediate frequency signals to improve signal quality. The detector and demodulator convert the intermediate frequency signals into digital signals and further transmit them to the external communication sub-station.

[0099] The station control layer includes the Baoxin substation and the Waixin substation, wherein the Baoxin substation serves as a link between the bay layer and the main station platform through the transmission layer, and has the function of sending relay protection information such as current, voltage, set value, and recording. After the protection action occurs, the Baoxin system transmits the relay protection information to provide effective support for the dispatcher to further restore the power grid. The Baoxin substation also has a control function and is arranged in the safety zone I, which solves the problem that the Baoxin substation requires a higher safety boundary. The Baoxin substation receives the control command of the platform layer platform (zone I) and sends the command to the bay layer through the transmission layer, thereby changing the set value status and pressure plate status of the secondary equipment;

[0100] The external communication substation mainly collects the external operation information of the secondary system. The external communication substation has a data collection function. It collects the external operation information of the secondary system sent from the wired transmission layer through the external communication substation switch of the transmission layer, including AC and DC system information and power quality information. It also collects the external operation information of the secondary system sent from the wireless transmission layer, mainly including information that cannot be transmitted through wires in the strong interference environment of the outdoor switch field. The external communication substation does not have a control function and is arranged in the safe zone III. It sends the external communication data to the platform layer platform (zone III) through the integrated data network in a single line, solving the problem that wireless transmission is less secure than wired transmission.

[0101] The trust substation within the station control layer is located in secure Zone I and is connected to the Zone I platform of the platform layer via the dispatching data network. The external trust substation is located in secure Zone III and is connected to the Zone III platform of the platform layer via the integrated data network. Both the dispatching data network and the integrated data network are equipped with a vertical encryption device that converts plaintext data sent from the trust substation and the external trust substation into ciphertext, which is then decoded by the master station upon arrival, enhancing security.

[0102] The station control layer receives the control commands issued by the platform layer security zone I and forwards them to the bay layer through the transport layer, thus realizing the platform layer's control function over the bay layer equipment in the substation;

[0103] The station control layer receives data sent by the interval layer through the transport layer and sends it to the platform layer.

[0104] The platform layer is connected to the station control layer, receives data sent by the station control layer, and sends control commands to the station control layer through the security zone I. At the same time, it is connected to the system layer and has data exchange with the system layer;

[0105] The platform layer includes a control and collection area (area I) and a data management and application area (area III). The control and collection area (area I) includes the control function of the station control layer for collecting and verifying trustworthy data, ensuring the security of control and the security of collected data. The data management and application area (area III) includes the collection of external trust data and the development of advanced applications and in-depth mining of data.

[0106] The control and acquisition area (area I) and the data management application area (area III) are connected through a forward isolation device and a reverse isolation device. The forward isolation device and the reverse isolation device are used to isolate the data interaction between the security area I and the security area III. The forward isolation TCP penetration method is adopted to send the specific data of the control and acquisition area (area I) to the data management application area (area III) through the forward isolation device to carry out advanced data applications. In addition, the information and data of the data management application area (area III) cannot pass through the reverse isolation device to the control and acquisition area (area I), further ensuring the security of the control and acquisition area (area I).

[0107] The forward isolated TCP penetration method is to establish an xb.tcp penetration adapter and a TCP_svr forwarding receiver on the security zone I server, and establish an xb.tcp adapter on the security zone III server. Path 1 of the platform's control and acquisition zone (zone I) is to send a standard TCP message to the TCP_svr forwarding receiver to convert it into an xb_tcp message, and then send it to the xb.tcp penetration adapter. Path 2 of the platform's control and acquisition zone (zone I) is to directly send the xb_tcp message to the xb.tcp penetration adapter. The xb.tcp penetration adapter generates a forward drive and establishes a TCP mapping with the data management application zone (zone III) server. The unidirectional TCP message is sent to a specific port of the xb.tcp adapter of the data management application zone (zone III) through a forward isolation device. Finally, the platform's data management application zone (zone III) stores and decodes the data.

[0108] As shown in Figure 3, the forward isolated TCP penetration method is implemented using xb_gl_proxy, where the configuration items are:

[0109] Establish the mapping of CHANNEL SVR in the data management application area to the control acquisition area, CHANNEL REMOTE SVR = 10.10.10.2:xxxx

[0110] Adapter service port, PROXY PORT = xxxx

[0111] The control acquisition area TCP is connected to the xxxx port of this service. Through the xb penetration mechanism, it is equivalent to connecting to the user machine in the data management application area. zf1=xxxx 192.1.1.2:xxxx

[0112] The control and acquisition area (Area I) is the production control area with the highest security level in the power monitoring system. It adopts a C / S client-server architecture and the programming language is C / C++. It has high development and maintenance costs, a complex approval process, and high time and labor costs. The data management application area (Area III) is the management information area with a security level lower than that of the non-control area in the power monitoring system. It adopts a B / S browser-server architecture and the programming language is Java. It has low development and maintenance costs.

[0113] The control acquisition area (area I) can receive remote control commands from the power dispatching automation OCS system and send the remote control commands to the security substation of the station control layer, including remote control of setting value modification and remote control of soft pressure plate, etc. At the same time, it is connected to the dispatching, operation, and maintenance extension workstation (area I), extending the acquisition and control functions to professionals in the dispatching, operation, and maintenance fields, meeting the needs of each profession and achieving quality and efficiency improvement in the operation and management of the secondary system;

[0114] The data management application area (area III) is connected to the OMS system (dispatching production management system). The data management application area (area III) retrieves the corresponding fixed value sheet and power outage application form from the OMS system, and sends the conclusion of the real-time data on the station side and the opinions of the application review personnel to the power outage application module of the OMS system, which simplifies and facilitates the process of power outage application and provides a basis for the approval and judgment of power outage application;

[0115] The data management application area (area III) is connected to the power grid management system, accessing the equipment ledger data of the power grid management system, and combining it with the new equipment commissioning application module of the OMS system to achieve full life cycle management of secondary equipment. At the same time, it accesses the defect management module data of the power grid management system, which includes at least historical defects and historical defect elimination plans. In conjunction with the real-time data sent from the station bay layer, it can roughly determine the cause of the defect and the defect elimination plan.

[0116] The data management application area (area III) is connected to the video image monitoring system to retrieve videos of the substation environment before and after the fault, videos of the operators, and videos of the equipment inside the substation. Based on the state of the environment, the state of the equipment, and the behavior of the people, a pre-fault accident analysis is conducted to determine whether the fault was caused by environmental, equipment, and human factors. After the fault, the state of the environment and the state of the equipment can be used to quickly determine whether the conditions for power restoration are met, thereby reducing the power outage time.

[0117] The data management application area (area III) is connected to the substation management platform, and sends the analysis result data obtained by the advanced application to the substation management platform, providing a reliable judgment basis for the substation management platform to judge the primary equipment, and effectively realizing the fusion of primary and secondary data.

[0118] The application layer is directly connected to the platform layer, which allows daily on-site work, such as the insertion and withdrawal of soft pressure plates, to be carried out remotely online. The control functions and advanced applications are extended from the platform to operation, maintenance, testing, scheduling and other professions, further realizing professional integration, effectively reducing the burden of on-site work, and meeting the different needs of various professions.

[0119] The application layer includes the scheduling, operation, repair and test extension workstation (area I) and the scheduling, operation, repair and test extension workstation (area III);

[0120] Among them, the scheduling, operation, and maintenance extension workstations (area I) are configured in two sets. The two workstations cooperate with each other, and the hard disk data are independent. When executing the control function, one person operates and the other monitors. After the staff of workstation 1 fills out the operation ticket correctly, the operation ticket will be sent to the staff of workstation 2 for review. After the review is correct, it will be executed. During execution, both people execute at workstation 1, one operates and the other monitors. After the execution is completed, both people check the equipment status after the operation in workstation 2.

[0121] The dispatching, operation, and maintenance extension workstation (Zone III) is a single set of configurations, mainly to meet the extension of advanced applications in Zone III of the platform, realize the value of the platform, and meet the needs of various professionals.

[0122] The disaster recovery backup center includes a disaster recovery system and a storage backup system, wherein the disaster recovery system includes a data backup and recovery management platform, an all-in-one disaster recovery server, a large-capacity hard disk and a confidentiality system, and the storage backup system includes at least a storage backup platform, a storage backup server, and a large-capacity hard disk. The disaster recovery backup center includes at least one off-site disaster recovery center and two same-city disaster recovery centers. The same-city disaster recovery centers are the production center and the same-city disaster recovery center. The same-city disaster recovery center uses remote replication to back up the real-time data of the production center, and the off-site disaster recovery center uses asynchronous remote replication to back up the data of the same-city disaster recovery center.

[0123] The advanced applications include equipment lifecycle management and defect modeling;

[0124] As shown in Figure 4, the equipment lifecycle management includes acceptance inspection of equipment to be put into operation. The acceptance records are recorded in the acceptance management module of the platform. At the same time, a closed-loop acceptance plan is implemented. After qualified acceptance, the equipment is put into operation. If the acceptance fails, the construction unit will make rectifications. The new equipment that has qualified acceptance is put into production. Maintenance work is carried out during the production. The maintenance work includes inspection, defect elimination, countermeasures, special work, and inspection work. The equipment status is evaluated. The equipment status is evaluated based on the inspection situation, whether there are any abnormalities during the inspection, the operating age of the device, and whether there are frequent defects. If the evaluation results are good, normal operation and maintenance will be maintained. Equipment with poor evaluation results needs to shorten the inspection and inspection cycles. For equipment with poor evaluation results that meet the transformation cycle and transformation conditions, technical transformation work is carried out and the device is replaced. After the replacement passes the acceptance, it enters the acceptance stage. The replaced equipment is decommissioned and appraised. Equipment with high residual value is reused, and equipment with low residual value is scrapped.

[0125] The defect modeling includes: the platform defect management module collects abnormal alarm signals from the remote patrol module or the centralized monitoring module; the defect management module automatically collects key information of the alarm based on the alarm information, the key information includes the device name, alarm level, alarm appearance, and alarm logic; the device name is the double name of the alarm device; the alarm level is divided into 4 levels, the first level alarm is a red alarm, the second level alarm is an orange alarm, the third level alarm is a yellow alarm, and the fourth level alarm is a blue alarm; among them, the first level alarm is the most serious and the most urgent, and the fourth level alarm is the mildest and has a smaller impact; the first level alarm corresponds to an emergency defect, and the defect is eliminated within 12 hours; the second level alarm corresponds to a major defect, and the defect is eliminated within 72 hours; the third and fourth level alarms correspond to general defects, and the defects are eliminated within 3 months;

[0126] The alarm appearance includes the alarm logic, which is the alarm logic in the rule library of the device that the platform calls up. Combined with the alarm appearance, the alarm is analyzed to see if it is a normal alarm. The alarm logic is divided into numerical alarms and status alarms. Numerical alarms are alarms when a certain value is reached or not reached. For this type of alarm, the actual value and the set value are calculated for comparison. When the calculation result is load logic, the alarm is confirmed and automatically transferred to the defect module. When the calculation result does not conform to the logic, it is a false alarm and the logic ends. When the main transformer protection sends an overload alarm, the alarm logic module calls the set value of the main transformer protection overload in the rule library, and then combines the real-time current analysis to determine whether the alarm set value has been reached. If the alarm value has been reached, the alarm is confirmed and transferred to a defect. If the set value has not been reached, it is judged to be a false alarm and the logic ends.

[0127] Status alarms are issued when abnormal equipment status is detected. For this type of alarm, the device name and status can be confirmed. If the equipment status matches the alarm information, the alarm is confirmed and automatically converted to a defect. Key information in the alarm information, such as the device name, alarm level, alarm appearance, and alarm logic, is automatically converted into defect factors. At the same time, key information such as the commissioning time of the alarm equipment, equipment type, DC system, ambient temperature, maintenance status, inspection status, and historical defect causes are retrieved and defect modeling is performed.

[0128] The following are the common causes of defects in the equipment:

[0129] Plug-in damage, loose terminals, incorrect identification, program stuck, incorrect secondary circuit connection, air switch tripping, insulation abnormality, parasitic circuit, water ingress to auxiliary components, damage to auxiliary components, program loopholes, and incorrect alarm definition. Standardizing the above 12 causes of defects can lead to four categories: operating years, operating environment, equipment manufacturer, and maintenance status. Each category is called a common factor. The following factor model can be used between the above 12 causes of defects and the four common factors: X i =μ i +a i1 f i1 +a i2 f i2 +a i3 f i3 +a i4 f i4 +ε i (1≤i≤12)

[0130] where X i are the possibilities of 12 possible causes of defects, f1, f2, f3, and f4 represent the above four common factors, and a ij It's X i In the common factor f i Load on, μ i It's X i The mean of ε i are other factors that are not common factors;

[0131] Transform the above formula and calculate it using matrix method: X=μ+Af+ε

[0132] Among them, f = (f1, f2, f3, f4) is the common factor vector, ε = (ε1, ε2, ..., ε 12 ) is a special factor vector;

[0133] Then A 12×4 =a ij(1≤i≤12), (1≤j≤4) is the factor loading matrix of the defect cause. The rank of matrix A is m, E(f)=0 E(ε)=0 Var(f=I cov(f,ε)=E(fε)=0

[0134] When the above conditions are met, Var(x)=E[(X-μ)(X-μ)′]=AA′+D

[0135] Then the element a of A ij That is the covariance between the probability of the cause of the defect and the common factor fi: ij =cov(X i ,f i )=ρ(X i ,f i )

[0136] Among them, E(f) represents the comprehensive expectation of the discrete common factor vector f1-f4, E(ε) represents the comprehensive expectation of the discrete special factor vector, Var(ε) is the variance of the special factor vector, which describes the degree of discreteness of the special factor vector ε, and cov(f,ε) represents the covariance matrix of the common factor vector f and the special factor vector ε;

[0137] The degree to which the probability of the cause of the defect depends on the above four common factors can be expressed by the sum of squares of the row elements of A.

[0138] but (1≤i≤12),

[0139] in It represents the contribution of the common factor to the probability of the cause of the defect. It represents the contribution of special factors to the possibility of the cause of the defect. The Xi with the largest value is finally calculated. The most likely cause of the defect is the i-th item. Based on key information such as the cause of the defect, defect level, defective equipment, defect occurrence time, and defect elimination time, the defect work order is automatically filled in and the work is automatically assigned to the maintenance personnel.

[0140] As shown in Figure 5, the platform control acquisition area (Area I) only includes the acquisition and control functions such as data acquisition and processing of the security substation, remote modification of set values, and remote activation and deactivation of soft pressure plates;

[0141] The specific data collection and processing method of the Baoxin substation is as follows: the C network of the secondary equipment in the interval layer is sent to the Baoxin substation in the station control layer through the Baoxin substation switch in the transmission layer. The Baoxin substation sends the Baoxin data through the dispatching data network to the Baoxin master station arranged in the control and collection area (Area I) of the intelligent operation and maintenance management and control platform of the power system secondary system.

[0142] The secondary equipment of the bay layer includes at least all relay protection devices, fault recording devices, traveling wave ranging devices, and pressure plate monitoring devices.

[0143] The remote modification of set values ​​and remote modification of soft pressure plates are both sent by the extended workstation (Zone I) of the application layer to the security master station, which sends the command to the security substation and then to the protection device of the interval layer, thereby modifying the set value items that need to be modified. Before and after the modification, the system verifies the set value according to the intelligent rules in the rule base to check whether the modified set value and soft pressure plate meet the intelligent rules for load set value adjustment and whether they match the set value list.

[0144] The data collection of the external communication substation is divided into two methods: wired collection and wireless collection. It solves the problem of incomplete collection of external information of all secondary systems in the station, assists in the judgment of the status of secondary system equipment, assists in fault analysis and judgment, and provides beneficial help for defect handling and alarm confirmation.

[0145] The advanced application development in the data management application area (Area III) is mainly divided into six modules, namely centralized monitoring, panoramic data, data maintenance, remote inspection, smart scheduling, and intelligent maintenance.

[0146] As shown in Figure 7, centralized monitoring mainly includes real-time alarms, historical alarms, memos, and shift handovers.

[0147] As shown in Figure 6, real-time alarms primarily extract alarm information based on alarm messages sent from the Baoxin and External Information substations. Historical alarms primarily use intelligent algorithms to analyze historical alarm data, enabling query and filtering of historical alarms, as well as querying historical handling methods. All archived alarm information is stored in the Historical Alarm module. Memos allow users to record important features or handling methods for real-time or historical alarms. Later, when searching for historical alarms, these features and handling methods are displayed, assisting staff in making decisions. To-Do Lists allows real-time alarms that cannot be immediately acknowledged to be transferred to a To-Do List. Alarm signals in the To-Do List remain in the To-Do List until staff confirm them, preventing the omission or forgetting of critical signals and alarm information. Once a To-Do List alarm is acknowledged, it enters the Alarm Archive module.

[0148] The alarm archiving module transfers alarm information and pending information to the alarm archiving module after manual confirmation. If the alarm archiving module checks that the alarm information has not been restored, it will be transferred to the defect module for defect elimination. If the alarm information has been restored, the number of times the alarm occurred during the current shift will be counted. If it occurs two or more times during the current shift, it will be transferred to the shift handover module and handed over to the on-duty monitoring personnel of the next shift, who will focus on the alarm information. The shift handover generates statistical data and intelligent analysis for the alarm information platform monitored by the previous shift, and alarms that have occurred 2 or more times during the current shift will receive special attention. For alarm information that has not been restored in the alarm archive, it will be transferred to the defect management module of intelligent operation and maintenance.

[0149] As shown in Figure 8, the panoramic data module mainly includes geographic map, flow map, topology map, substation map and interval map.

[0150] The geographic map mainly displays all substations within the operation and maintenance scope and their geographical locations. Clicking on a specific substation in the geographic map will enter the substation map of that substation.

[0151] The flow chart mainly shows the flow distribution of all substations within the operation and maintenance scope. The flow data is mainly obtained by the interaction between this platform and the dispatching OMS system and the dispatching OCS system. Clicking on a specific substation in the flow chart will enter the substation diagram of the substation.

[0152] The topology diagram mainly shows the topology and architecture of this platform.

[0153] The substation diagram is the main connection diagram of the substation within the operation and maintenance scope. Clicking a specific interval on the main connection diagram will enter the specific interval diagram. The substation diagram is obtained through interaction between this platform and the dispatching OMS system and the dispatching OCS system. The diagram can display the telemetry data of each interval.

[0154] The bay diagram is a schematic diagram of a specific bay in the substation. It can display all the information of the secondary equipment in the bay, and can make intelligent judgments on the operating status of the bay, whether there are alarms, whether the secondary circuit status is normal, and whether the soft and hard pressure plates are in operation and withdrawal according to the load setting order.

[0155] As shown in FIG9 , the data maintenance module includes a tag library, a rule library, and a grammar library.

[0156] The tag library labels the uploaded data, giving different data items their own unique imprints, laying the foundation for intelligent and advanced applications of data.

[0157] The rule library is based on manually formulated rules and intelligent algorithms for the tagged data in the tag library, and further develops advanced applications for the tagged data, such as manually input set value adjustment rules and intelligent calibration and verification. The platform can carry out advanced applications of intelligent calibration and verification for the tagged set values.

[0158] The grammar library is mainly aimed at data calculated by intelligent algorithms and artificial rules. The grammar input by humans can be output into the data required by various professionals.

[0159] As shown in Figure 10, the remote inspection module includes periodic inspection, accident inspection, and inspection report.

[0160] The periodic inspection system can conduct routine inspections of a substation according to a specific cycle. During the inspection, all data transmitted by the substation is intercepted, and intelligent inspections are carried out according to the rules of the intelligent inspection rule base. An inspection report is generated and stored. The inspection report determines the abnormality level based on the device of the abnormal event and the severity of the abnormal alarm. Level 1 abnormality is a red alarm, level 2 abnormality is an orange alarm, level 3 abnormality is a yellow alarm, and level 4 abnormality is a blue alarm. Level 1 alarm is the most serious and urgent, while level 4 alarm is the mildest and has a smaller impact.

[0161] The data for these inspections comes from relay protection data collected by the substation's security substation, secondary system external information collected by the external security substation, power flow data obtained through interaction between the platform and the OMS, and remote control information ("four remote information") obtained through interaction between the platform and the OCS. This addresses the issues of incomplete information during conventional on-site inspections, the failure to identify hidden dangers and defects, and the low efficiency of manual inspections.

[0162] The accident inspection is an online inspection carried out to confirm the status of the primary equipment and the operation of the secondary equipment after the tripping accident occurs, and an inspection report is generated. The confirmation of the status of the primary equipment includes combining the data of the interaction of the video image monitoring system, conducting intelligent analysis of the high-definition image of the primary equipment, judging the energy storage status, actual location and other information of the primary equipment, and then determining whether the tripped primary equipment has the conditions to supply power. The analysis of the operation of the secondary equipment mainly includes retrieving the current and voltage waveforms at the time of the fault and the action message of the protection device, the set value, the status monitoring of the secondary circuit, the insertion and withdrawal of the soft pressure plate and the hard pressure plate, etc. sent by the Baoxin substation. According to the message sent by the WEB system, it can be confirmed whether the protection is correctly operating and whether the secondary circuit is in a normal state through the fault analysis intelligent diagnosis method. The information collection and analysis work can be completed without the staff going to the site, which also avoids the analysis errors caused by human errors, and effectively improves the level of secondary operation and maintenance and management.

[0163] Inspection reports are written and formatted as a result of accident and periodic inspections, generated based on an intelligent inspection rule base. Inspection reports offer search and comparison capabilities, enabling retrieval of inspection reports for various scenarios, including specific dates, intervals, and faults. Inspection report comparisons primarily include pre-accident and post-accident comparisons, as well as a comprehensive comparison of the current inspection cycle's results with those of the previous cycle. This ensures accurate and reliable inspection results.

[0164] As shown in Figure 11, smart dispatching serves dispatching staff, including countermeasure management, fault analysis, maintenance management, defect management, status evaluation, acceptance management, risk management, and return management.

[0165] Countermeasure management is to implement anti-accident measures and some special tasks on specific equipment in specific substations through work logs, work tickets and equipment information data exchanged through the power grid management platform, and to check and manage the progress and completion of anti-accident measures and special tasks.

[0166] Fault analysis collects relay protection information sent from the Baoxin substation and relay protection external operation information sent from the Waixin substation, and combines the image information of the video image monitoring system and the message information of the WEB system to conduct comprehensive analysis, intelligent diagnosis and generate fault analysis reports on the power system fault situation sent at a certain moment. It can effectively determine the cause of the fault, fault point, fault distance and other key information, providing an effective basis for the dispatcher to comprehensively judge the impact of the fault and whether the conditions for power transmission are met.

[0167] Maintenance management is to achieve comprehensive management of maintenance cycle, maintenance quality and maintenance records through the interaction of work ticket information and equipment information of the secondary system on the power grid management platform, thus solving the problems of overdue inspection, insufficient maintenance quality management and incomplete maintenance records.

[0168] Defect management is achieved by centrally monitoring the abnormal alarm signals that have not been restored in the module. After comprehensive analysis, the defects are transferred to the defect management module. The defect management module can view the historical defects of the equipment, the status of unresolved defects, the methods of resolved defects, and other information, and can supervise and manage the defects throughout the entire process.

[0169] The status evaluation module in smart scheduling, namely status evaluation management, is a comprehensive management of the progress and results of status evaluation. It mainly includes formulating status evaluation plans, formulating maintenance cycles and special inspection plans based on status evaluation results, etc.

[0170] Acceptance management is the exchange of new equipment commissioning information and fixed value order information with this platform through the new equipment commissioning application module of the OMS system, so that the dispatching staff can have overall control over the entire new equipment commissioning work and manage the acceptance of the new equipment commissioning work, mainly including reviewing the acceptance records, checking the four remote information of the master station, and trustworthiness testing and other management work.

[0171] Risk management is achieved by exhaustively listing on-site work items, types and categories to generate a work list, and grading the risk levels of the operations in the work list. Combined with the data from the interaction between the weekly and monthly plan modules of the power grid management platform, risk grading and risk control are carried out for weekly and monthly plans.

[0172] Return management is the control of the entire return process of equipment that needs to be returned. This includes determining whether the equipment needs to be returned, whether the return process complies with regulations, whether the return appraisal results are accurate, and whether the reasons are sufficient. Professional management personnel are dispatched to comprehensively manage the above information.

[0173] As shown in Figure 12, intelligent maintenance services for maintenance and operation personnel include countermeasures, maintenance work, ledger information, defect handling, status evaluation, acceptance work, and equipment return. Countermeasures mainly involve maintenance personnel carrying out countermeasure plans and special tasks. They can use the power outage maintenance application data interacting with the OMS system to determine the countermeasures and special tasks that need to be carried out in conjunction with the power outage. After rectification, the system needs to be entered on the platform to complete the closed loop.

[0174] During maintenance work, maintenance personnel can query the information of maintenance intervals, conduct comprehensive analysis based on the status evaluation results and abnormal conditions such as whether there are defects and alarm signals, and carry out targeted maintenance work to solve the above problems and improve the maintenance quality of secondary equipment.

[0175] The ledger information is the equipment ledger data obtained through the interaction between this platform and the equipment ledger module of the power grid management platform, which includes program version, commissioning date, equipment status, maintenance date, defect record, etc., providing a basis for the full life cycle management of secondary equipment.

[0176] Condition evaluation is based on an intelligent algorithm to evaluate the status of secondary equipment in a substation. The data of the secondary equipment is obtained by the interaction between this platform and the equipment ledger module of the power grid management platform. The intelligent algorithm for condition evaluation needs to fully consider the equipment's operating age, number of defects, software version, load conditions and other information. The result of the condition evaluation is used as a criterion for the maintenance cycle of the maintenance management module. When the equipment status result is poor, more frequent maintenance work is required to ensure the normal operation of the equipment.

[0177] Return management combines the data from the interaction between the equipment inventory module of the power grid management platform and the status evaluation module of this platform. Through comprehensive judgment, when the equipment exceeds the prescribed operating period and the status evaluation is poor, and when technical transformation work is carried out, the equipment needs to be returned. In this case, the return information is filled in the equipment return module of this platform, and a decommissioning appraisal is carried out at the same time. When the residual value is high, the equipment is reused; when the residual value is low, the equipment is scrapped.

[0178] Acceptance management involves maintenance personnel inspecting new equipment before it goes into production. This work is carried out according to the acceptance plan, and acceptance and rectification records must be entered into the system. Only after passing the acceptance test can the equipment be put into production.

[0179] Example 2

[0180] The second embodiment of the present invention provides an intelligent operation and maintenance management platform for a power secondary system. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through experiments.

[0181] Maintenance work requires targeted implementation within the platform's maintenance module, combining condition evaluation results with defect records and abnormality alerts. After the maintenance is complete, the platform closes the loop and completes a maintenance log. Finally, dispatch management personnel review the maintenance log and the post-maintenance equipment status before issuing a final evaluation.

[0182] Table 1. Maintenance score

[0183] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0184] Example 3

[0185] The third embodiment of the present invention is different from the first two embodiments in that:

[0186] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0187] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0188] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0189] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can 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 a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

Claims

1. An intelligent operation and maintenance management platform for power secondary systems, characterized by: include, Interval layer, transmission layer, station control layer, platform layer, system layer, application layer, disaster recovery and backup center; The bay layer includes all wired transmission secondary equipment and wireless transmission collection units in the substation; The secondary equipment includes a protection device, a fault recording device, a traveling wave ranging device, a pressure plate monitoring device, a power quality device and an AC / DC system, and the data of the secondary equipment is sent to the wired transmission layer via wired transmission; The wireless transmission collection unit includes a MEMS power supply and communication module, a MEMS microsensor, and a MEMS microactuator, and collects the secondary system external operation information wirelessly transmitted in the substation through micro-electromechanical systems and radio frequency MEMS technology. The wireless transmission collection unit is connected to the wireless transmission layer and sends the collected secondary system external operation information to the wireless receiving host of the wireless transmission layer; The secondary system external operation information is the operation status information of the secondary system related equipment, the behavior information of the on-site operators of the relay protection device, and the substation environment information.

2. The intelligent operation and maintenance management platform for a power secondary system according to claim 1, characterized in that: The transmission layer connects the interval layer and the station control layer, and forwards the data of the interval layer to the station control layer. The transmission layer includes a wired transmission layer and a wireless transmission layer, wherein the wired transmission layer includes a wired transmission layer of zone I and a wired transmission layer of zone III. The wired transmission layer of zone I includes a Baoxin substation switch and a Baoxin substation communication acquisition module. The Baoxin substation switch is connected to a secondary device of the intra-station communication protocol, and the Baoxin substation communication acquisition module is connected to a secondary device of the intra-station communication protocol. The wired transmission layer of zone III includes an external substation switch, which is connected to a spacer layer device of the communication protocol for sending data from the external substation, and sends the data of the spacer layer device to the external substation; The wireless transmission layer includes a wireless receiving host, which collects data sent by a collection unit of wireless transmission in the collection station. The components of the wireless receiving host include an antenna, a radio frequency front end, an intermediate frequency amplifier, an intermediate frequency filter, a detector and a demodulator.

3. The intelligent operation and maintenance management platform for a power secondary system according to claim 2, characterized in that: The station control layer includes the Baoxin substation and the Waixin substation, wherein the Baoxin substation serves as a link between the interval layer and the main station platform through the transmission layer, and sends commands to the interval layer through the transmission layer, thereby changing the set value state and the pressure plate state of the secondary equipment; The external communication substation collects the external operation information of the secondary system. The external communication substation has a data collection function. The external operation information of the secondary system sent from the wired transmission layer is collected through the external communication substation switch of the transmission layer. Including AC / DC system information and power quality information; Collect the external operation information of the secondary system sent by the wireless transmission layer, including the information that cannot be transmitted by wire in the strong interference environment of the outdoor switch field. The external communication substation does not have the control function; The security substation in the station control layer is arranged in the safety zone I, and is connected to the zone I platform of the platform layer through the dispatching data network. The external information substation is arranged in the safety zone III, and is connected to the zone III platform of the platform layer through the integrated data network. The dispatching data network and the integrated data network are both equipped with a vertical encryption device; The station control layer receives the control command issued by the platform layer security zone I, and forwards it to the bay layer through the transport layer, so as to realize the control function of the platform layer on the bay layer equipment in the substation; The station control layer receives data sent by the interval layer through the transport layer, and sends it to the platform layer.

4. The intelligent operation and maintenance management platform for a power secondary system according to claim 3, characterized in that: The platform layer is connected to the station control layer, receives data sent by the station control layer, and sends control commands to the station control layer through the safety zone I. At the same time, it is connected to the system layer and has data interaction with the system layer; The platform layer includes a control collection area and a data management application area, wherein the control collection area includes the control function of the collection and verification of trustworthy data, ensuring the security of control and the security of collected data, and the data management application area includes the collection of external trust data and the development of advanced applications and in-depth mining of data; The control acquisition area and the data management application area are connected through a forward isolation device and a reverse isolation device. The forward isolation device and the reverse isolation device are used to isolate the data interaction between the safety zone I and the safety zone III, and a forward isolation TCP penetration method is adopted.

5. The intelligent operation and maintenance management platform for a power secondary system according to claim 4, characterized in that: The forward isolated TCP penetration method includes: establishing an xb.tcp penetration adapter and a TCP_svr forwarding receiver on a security zone I server, establishing an xb.tcp adapter on a security zone III server, path 1 of the control acquisition zone of the platform is to send a standard TCP message to the TCP_svr forwarding receiver to convert it into an xb_tcp message, and then send it to the xb.tcp penetration adapter, path 2 of the control acquisition zone of the platform is to directly send the xb_tcp message to the xb.tcp penetration adapter, the xb.tcp penetration adapter generates a forward drive and establishes a TCP mapping with the data management application zone server, sends the unidirectional TCP message to the specific port of the xb.tcp adapter in the data management application zone through a forward isolation device, and finally the data is stored and decoded by the platform data management application zone; The forward isolated TCP penetration method is implemented using xb_gl_proxy, where the configuration items are: Establish the mapping of CHANNEL SVR in the data management application area to the control acquisition area. CHANNEL REMOTE SVR=10.10.10.2:xxxx Adapter Service Port, PROXY PORT = xxxx The control collection area TCP is connected to the xxxx port of this service, which is equivalent to the user machine connected to the data management application area through the xb penetration mechanism. zf1=xxxx 192.1.1.2:xxxx The control collection area receives the remote control command of the power dispatching automation OCS system and sends the remote control command to the trust-protecting substation of the station control layer, including remote remote control to modify the set value and remote remote control of the soft pressure plate; The data management application area is connected to the OMS system, and the data management application area retrieves the corresponding fixed value list and power outage application form from the OMS system, and sends the conclusion of the real-time data in the station side and the opinions of the application approval personnel to the power outage application module of the OMS system; The data management application area is connected to the power grid management system to retrieve the equipment ledger data of the power grid management system; The data management application area is connected to the video image monitoring system to retrieve the video of the substation environment before and after the fault, the video of the operating personnel, and the video of the equipment in the substation. Based on the state of the environment, the state of the equipment, and the behavior of the people, the pre-fault accident analysis is carried out to determine whether the fault is caused by environmental, equipment, and human factors. After the fault, the state of the environment and the state of the equipment video are used to quickly determine whether the conditions for power restoration are met, thereby reducing the power outage time. The data management application area is connected to the substation management platform, and sends the analysis result data obtained by the advanced application to the substation management platform.

6. An intelligent operation and maintenance management platform for a power secondary system according to claim 5, characterized in that: The application layer is directly connected to the platform layer; The application layer includes scheduling, operation, and repair and test extension workstations; The disaster recovery backup center includes a disaster recovery system and a storage backup system.

7. An intelligent operation and maintenance management platform for a power secondary system according to claim 6, characterized in that: The advanced applications include equipment life cycle management and defect modeling; The equipment life cycle management includes acceptance inspection of the equipment to be put into operation, and the acceptance records are recorded in the acceptance management module of the platform. At the same time, a closed-loop acceptance plan is established. After the acceptance is qualified, the equipment is put into operation. If the acceptance is unqualified, the construction unit will make rectifications, and the new equipment that has passed the acceptance will be put into production. Carry out maintenance work during production.

8. An intelligent operation and maintenance management platform for a power secondary system according to claim 7, characterized in that: The defect modeling includes that the platform defect management module collects abnormal alarm signals in the remote patrol module or the centralized monitoring module, and the defect management module automatically collects key information of the alarm according to the alarm information; The key information includes device name, alarm level, alarm appearance, and alarm logic; The alarm phenomenon is analyzed and judged by the platform through the alarm logic in the rule base of the equipment and the abnormal alarm signal in combination with the alarm level; The alarm logic includes numerical alarms and status alarms; The numerical alarm includes the numerical values ​​reaching and not reaching the first threshold value, and the actual numerical value is calculated and compared with the alarm setting value. When the calculation result is logically consistent, the alarm is confirmed and automatically transferred to the defect module. When the calculation result is not logically consistent, it is a false alarm and the logic ends. When the main system detects that the main transformer protection sends an overload alarm, the alarm logic module calls the setting value of the main transformer protection overload in the rule library, and combines the real-time current analysis to determine whether the alarm setting value has been reached. If the alarm setting value has been reached, the alarm is confirmed and transferred to the defect module. If the alarm setting value has not been reached, it is determined to be a false alarm and the logic ends. The status alarm includes an alarm signal issued by detecting abnormal equipment status. The equipment name and status are reconfirmed according to the alarm signal. If the equipment status meets the alarm information, the alarm is confirmed and automatically transferred to the defect module. The key information of the alarm signal is automatically converted into defect factors. At the same time, the operation information of the alarm equipment is retrieved and defect modeling is performed. X i =μ i +a i1 f i1 +a i2 f i2 +a i3 f i3 +a i4 f i4 +ε i (1≤i≤12) Among them, X i (1≤i≤12) represents the possibility of 12 possible causes of defects, which are plug-in damage, loose terminals, wrong identification, program stuck, wrong secondary circuit connection, air switch tripping, insulation abnormality, parasitic circuit, water ingress to auxiliary components, damage to auxiliary components, program loopholes, and wrong alarm definition. f1, f2, f3, and f4 represent four common factors. a ij Yes X i In the common factor f i Load on, μ i Yes X i The mean value of i are other factors that are not common factors; Transform the above formula and calculate it using the matrix method: X=μ+Af+ε Where, f=(f1,f 2， f3,f4) is the common factor vector, ε=(ε1,ε2,……,ε 12 ) is a special factor vector; Then A 12×4 =a ij (1≤i≤12), (1≤j≤4) is the factor loading matrix of the defect cause. The rank of matrix A is m. When E(f)=0, E(ε)=0, Var(f)=I, The probability of the cause and the common factor f i The covariance between: Among them, E(f) represents the comprehensive expectation of the discrete common factor vector f1-f4, E(ε) represents the comprehensive expectation of the discrete special factor vector, Var(ε) is the variance of the special factor vector, which describes the degree of discreteness of the special factor vector ε, and cov(f,ε) represents the covariance matrix of the common factor vector f and the special factor vector ε; The degree of dependence of the possibility of the cause of the defect on the four common factors is expressed by the sum of squares of the row elements of A. but in It represents the contribution of the common factor to the probability of the cause of the defect. Indicates the contribution of special factors to the possibility of defect occurrence, and finally calculates the maximum value of X i , then the most likely defect cause is item i; According to the cause of the defect, defect level, defective equipment, defect occurrence time, and key information such as the time to eliminate the defect, the defect work order is automatically filled in and the work is automatically assigned to the maintenance personnel.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

Images