High-proportion new energy and multi-basin hydroelectric virtuality and reality combined remote coordination control method

Abstract

The invention discloses a high-proportion new energy and multi-basin hydropower virtuality and reality combined remote coordination control method, and aims at the high-proportion new energy and multi-basin hydropower virtuality and reality combined remote coordination control method which adopts a virtuality and reality centralized control combined control method. The embarrassment that new energy and conventional energy dispatching orders do not belong to the same dispatching order is avoided through the branch control, and meanwhile human errors caused by tedious data are avoided through the branch control.

Description

Technical Field

[0001] The present invention belongs to the technical field of power generation, and particularly relates to the technical field of clean energy power supply. Background Art

[0002] Under the action plan of "Internet +", a wave of energy Internet construction has emerged in China. More and more power production units have started technological innovation and integration, integrating new energy equipment and technologies into power production.

[0003] The new energy power plants vigorously developed in China include wind power centralized control stations, hydropower centralized control stations, and photovoltaic centralized control stations, etc. Most of the new energy power plants are built in remote locations with scattered plant sites. The scale of a single site is small and the distance is far, which is not conducive to centralized resource scheduling and comprehensive management. The remote centralized control center realizes resource management through means such as optimized allocation of human resources, integration of information resources, and supervision of management efficiency, and more and more centralized control management modes have been constructed under the background of computer technology, big data technology, and communication technology.

[0004] However, at present, most centralized controls are carried out in one river basin or two river basins are remotely controlled in a centralized control center, and centralized control of cascade small hydropower in 3 or more river basins is not carried out, nor is research on the coordinated control method for high-proportion new energy (wind power and photovoltaic accounting for more than 50%) and hybrid hydropower.

[0005] Therefore, when facing centralized control of more than 3 river basins, the existing centralized control methods have limited processing capabilities when facing a large amount of information, and it is difficult to dispatch in a centralized control environment with numerous river basins. Moreover, since the dispatching orders for new energy and conventional energy do not belong to the same dispatching order, the traditional centralized control method cannot handle centralized control with a relatively high proportion of new energy.

[0006] In addition, when carrying out remote centralized control of centralized river basins, a remote centralized control center combining virtual and real is not established for redundant control of multiple river basins. Summary of the Invention

[0007] The purpose of the present invention is to provide a remote coordinated control method for high-proportion new energy and multi-river basin hydropower combining virtual and real, which conducts a virtual and real remote centralized control method for centralized control of 3 or more river basins, so as to achieve precise control of river basin centralized control by enterprises and reduce the technical problem of the risk that the power grid cannot control power stations.

[0008] The present invention is studied based on the fact that the proportion of photovoltaic and wind power exceeds 50%, and 6 river basin controls are involved in this study.

[0009] In the present invention, in order to ensure the accuracy of power station data uploading and the effectiveness of data transmission through channels, the primary and standby centralized controls are respectively established in different locations. Among them, the primary centralized control is established in the company's Chengdu office building to realize the urbanization of the power station. Since there are too many subordinate river basins and different river basins have different line loads on the dispatching side, in order to facilitate the effective control of the power station, therefore, in this invention patent, for power stations whose final loads in different river basins belong to the same output line, they are set in the same control center. And in this control center, for those whose original basin dispatching orders do not belong to the same dispatching order, the sub-dispatching orders are still executed to avoid the inability of personnel to distinguish the dispatching orders. Each control center conducts control separately to facilitate dispatching orders and business applications, and avoid personnel errors caused by excessive information and overly complex matters when all controls are placed in one control center; the standby centralized control is mainly established in the centralized control office camps where each river basin is located, and is established in two different places from the primary centralized control. At the same time, there are 3 links for the power station data to be sent to the power grid, and the communication of these three links is two-way, thus meeting the requirements of the ring network at the power grid side.

[0010] To solve the above technical problems, the specific technical solutions of the present invention are as follows: A remote coordinated control method for high-proportion new energy and multi-river basin hydropower with virtual-real combination, characterized by including the following steps: Step 1: The original data of the power station collects data through the branch control center and conducts rough processing; Step 2: Roughly process the original data of each power station and then send it to the branch data aggregation unit; Step 3: The branch data aggregation unit aggregates the data and forms a centralized data to be sent to the branch data acquisition unit; Step 4: The branch data acquisition unit conducts algorithm processing on the centralized data sent up and sends it to the centralized data rough processing unit.

[0011] Furthermore, the branch control center includes: a backbone network composed of a security zone 1 core switch A and a security zone 1 core switch B, and an engineer workstation, and the engineer workstation is responsible for rough data processing; The branch data aggregation unit includes a gateway server; The branch data acquisition unit includes a power station communication server, a primary centralized control communication server, and a standby centralized control communication server. The centralized control communication server includes / APP / his server, voice and oncall machine; the primary centralized control communication server and the standby centralized control communication server are respectively connected to the primary centralized control and the standby centralized control, and the primary centralized control and the standby centralized control are built in different locations; Both the primary and standby centralized control communication servers include a data acquisition unit, a data processing system, and a data control unit. The branch data acquisition unit processes the uploaded centralized data. Among them, the sub-station communication server performs precise algorithm and program processing on the data and packs the sub-station communication data. In addition to performing precise algorithm and program processing on the data and packing the sub-station communication data, the primary and standby centralized control communication servers in the branch data acquisition unit also encrypt the data, and then upload the data to the primary and standby centralized control for processing and use. The centralized data precise processing unit is set in the provincial dispatching and local dispatching network units.

[0012] Furthermore, there are 3 links for uploading power station data to the power grid, and the communication on these three links is bidirectional. The automatic trend analysis method control is embedded in the primary and standby centralized control.

[0013] Furthermore, the trend analysis method includes: (1) Time and frequency judgment: PT(A) ≥ P domain PT(A) represents the action frequency of event A within time T. The P domain represents the set threshold of the action frequency within time T. If the requirement is met, it is determined that the action frequency of event A within time T is too high, meeting the trend analysis requirement. Then, the action frequency within time T is statistically analyzed using the statistical method in the background, and a prompt is given through the screen search method. The statistical result is recorded in the historical database for later data query and data analysis comparison.

[0014] (2) Automatic shutdown judgment for accident events A ∈ B (shutdown) A represents event A. B (shutdown) represents all events that affect accident shutdown. When the action frequency of event A within time T is too high, meeting the trend analysis requirement, and event A also belongs to the events that affect accident shutdown; and the accident shutdown delay time is less than or equal to 2 minutes, the device automatically enters the shutdown process to prevent equipment damage caused by accident shutdown due to late operation by personnel. If the event also belongs to the events that affect accident shutdown; and the accident shutdown delay time is greater than 2 minutes, the background uses a timer to monitor this event. If when this event enters the 2-minute tripping time and this event has not been restored, and the unit is currently in the power generation state, the device automatically enters the shutdown process to prevent equipment damage caused by accident shutdown due to late operation by personnel.

[0015] Furthermore, the original power station data is sent from the power station to the provincial dispatching center, forming the first loop link with the original power station data sent to the primary centralized control. The data on this link has dual-loop and dual-channel upload capabilities. When the original power station data is sent from the power station to the provincial dispatching center, forming the second loop link with the original power station data sent to the standby centralized control. The data on this link also has dual-loop and dual-channel upload capabilities. When the original power station data is sent from the standby centralized control to the provincial dispatching center, forming the third loop link with the original power station data sent to the primary centralized control. The data on this link has dual-loop and dual-channel upload capabilities. When any one of the power station dispatching data private network, the primary centralized control data private network, and the standby centralized control data private network is damaged, it can be uploaded through the other route and form a ring network to ensure dual-loop and dual-channel upload.

[0016] Furthermore, the centralized control adopts a control method combining virtual and real, setting two limits for the communication rate, 100% and 0%, corresponding to the real and virtual states respectively.

[0017] Furthermore, corresponding control authorities are set for the virtual and real states. The control authorities are set as green, red, yellow, and gray. Green represents a communication rate of 100% and the current control authority is in the current primary (standby) centralized control; red represents that the current communication rate is greater than 0% and less than 100%, and the control authority is in the current primary (standby) centralized control; yellow represents that the current communication rate is greater than 0% and less than 100%, and the control authority is not in the current primary (standby) centralized control; gray represents a communication rate of 0% and the current control authority is not in the current primary (standby) centralized control.

[0018] Furthermore, the control method combining virtual and real adopted by the centralized control is as follows: (1) When Φ real = 100%; Φ virtual = 0% Φ real is the set primary centralized control. Φ virtual is the set standby centralized control.

[0019] If the requirements are met, the communication will automatically switch to the primary centralized control, and the control authorities of the power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the primary centralized control to prevent the system from being inoperable due to failure to switch authorities during operation; at the same time, all control authorities of the standby (virtual centralized control) will become gray, and all authorities of the primary centralized control will become green. (2) When Φ real = 0%; Φ virtual = 100% Φ real is the set primary centralized control. Φ virtual is the set standby centralized control.

[0020] If the requirements are met, the communication will automatically switch to the standby centralized control for use, and the control authorities of power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the standby centralized control for use, so as to avoid the system being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the primary use (centralized control virtual centralized control) become gray, and all control authorities of the standby centralized control for use become green. (3) When 0% < Φactual < 100%, 0% < Φvirtual < 100% and Φactual > Φvirtual; Φactual is the set primary use centralized control for use; Φvirtual is the set standby centralized control for use.

[0021] If the requirements are met, the communication will automatically switch to the primary use centralized control for use, and the control authorities of power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the primary use centralized control for use, so as to avoid the system being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the standby use (centralized control virtual centralized control) become yellow, and all control authorities of the primary use centralized control for use become red. (4) When 0% < Φactual < 100%, 0% < Φvirtual < 100% and Φactual > Φvirtual; Φactual is the set primary use centralized control for use; Φvirtual is the set standby centralized control for use.

[0022] If the requirements are met, the communication will automatically switch to the standby centralized control for use, and the control authorities of power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the standby centralized control for use, so as to avoid the system being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the primary use (centralized control virtual centralized control) become yellow, and all control authorities of the standby centralized control for use become red.

[0023] Furthermore, in the step 1, for the rough processing of the data at the branch center and the data existing in the distributed control center, the active power, reactive power, temperature quantity, and digital quantity data of the distribution center are simply converted by PID and 4 - 20mA analog quantities, and the DI quantity is processed through a binary algorithm.

[0024] Furthermore, in the step 4, the branch data acquisition unit performs algorithm processing on the centralized data sent up, including: performing a blocking operation on redundant points using a logical algorithm.

[0025] The present invention also provides that the primary use and the standby use centralized control for use are respectively established in different places to ensure the accuracy of the power station data sent up and the effectiveness of the data transmitted through the channels.

[0026] Specifically, the main centralized control is established in the downtown building to realize the urbanization of power plants. Due to the excessive number of downstream basins, different downstream basins have different line loads on the dispatching side. To facilitate the effective control of power plants, in this invention patent, power plants with the final load belonging to the same output line in different downstream basins are set in the same control center. And in this control center, for those original dispatching orders of each downstream basin that do not belong to the same dispatching order, the sub-dispatching orders are still executed to prevent personnel from being unable to distinguish the dispatching orders. Each control center conducts control separately to facilitate dispatching orders and business applications, avoiding personnel mistakes caused by excessive information and overly complex matters when all controls are placed in one control center. The standby centralized control is mainly established in the centralized control office camps located in each downstream basin, and is separately established in two different places from the main centralized control.

[0027] The technical solution of the present invention has the following advantages: It greatly improves the control and monitoring of power plants by enterprises and the power grid, facilitates the remote control of the site by enterprises, and is conducive to the load dispatching of power plants by the power grid and the accurate control of the on-grid load, so as to avoid the risk that the online load cannot be accurately controlled due to the interruption of power plant communication and the inability to view the on-site load.

[0028] Adopting the automatic trend analysis control method facilitates the control of the main and standby centralized controls for multi-downstream basin centralized control, breaking through the conventional control method.

[0029] The present invention adopts a control method combining virtual and real centralized controls for the remote coordinated control method of high proportion of new energy and the virtual-real combination of multi-downstream basin hydropower. And the sub-control therein avoids the embarrassment that the dispatching orders of new energy and conventional energy do not belong to the same dispatching order. At the same time, the sub-control also avoids human mistakes caused by cumbersome data.

[0030] In the present invention, the automatic shutdown in case of accident, the 3-loop link of communication, and the automatic switching of communication can ensure the safe and stable operation of the power plant, and ensure the stability of communication. It ensures that the communication rate of the double-loop and double-channel of the power grid is greater than 90%, which greatly guarantees the safe and stable operation of the power grid and plays an important role in the remote control of the mixture of multi-downstream basins and new energy. Description of the Drawings

[0031] Figure 1 It is the data processing flow chart of the present invention; Figure 2 It is the system structure schematic diagram of the present invention; Figure 3 It is the power plant monitoring system structure schematic diagram of the present invention; Figure 4 It is the main centralized control security zone 1 system structure schematic diagram of the present invention; Figure 5Schematic diagram of the system structure of the primary use of the centralized control dispatching data private network equipment of the present invention. Detailed implementation manners

[0032] To better understand the purpose, structure and function of the present invention, the following will be further described in detail with reference to the accompanying drawings. Taking the remote Chengdu Centralized Control Center established for 8 river basins and 12 power stations under the Hydropower Development Co., Ltd. of Power Construction as an example, in the following implementation process, the virtual and real centralized control will be distinguished between the primary use and the standby use.

[0033] Embodiment 1 As Figures 1 to 5 shown, the remote coordinated control method for high proportion of new energy and multi-river basin hydropower with virtual-real combination of the present invention is characterized by including the following steps: Step 1: The original data of the power station collects data through the sub-control center and performs rough processing; Step 2: The original data of each power station is roughly processed and then sent to the sub-data aggregation unit; Step 3: The sub-data aggregation unit aggregates the data and forms a centralized data to be sent to the sub-data acquisition unit; Step 4: The sub-data acquisition unit performs algorithm processing on the sent centralized data and sends it to the centralized data rough processing unit.

[0034] Specifically, in the whole system: The sub-control center includes: a backbone network composed of a core switch A in security zone 1 and a core switch B in security zone 1, and an engineer workstation, and the engineer workstation is responsible for rough data processing.

[0035] The sub-data aggregation unit includes a gateway server.

[0036] The sub-data acquisition unit includes a power station communication server, a primary use centralized control communication server and a standby use centralized control communication server. The centralized control communication server includes / APP / his server, voice and oncall machine; the primary use centralized control communication server and the standby use centralized control communication server are respectively connected to the primary use centralized control and the standby use centralized control, and the primary use centralized control and the standby use centralized control are built in different locations.

[0037] Both the primary use centralized control communication server and the standby use centralized control communication server include a data acquisition unit, a data processing system, and a data control unit.

[0038] The sub - unit data acquisition unit processes the centralized data sent up with algorithms. Among them, the sub - power station communication server processes the data with precise algorithms and programs, and packs the power station communication data. In addition to the main and standby communication servers in the sub - unit data acquisition unit processing the data with precise algorithms and programs, and packing the power station communication data, they also encrypt the data, and then send the data to the main and standby centralized control for processing and use.

[0039] The sub - unit data acquisition unit is the source port for the original data of each power station to be sent up through measuring elements and internal optical fibers, network cables, 485 communication cables or other serial ports.

[0040] The sub - unit data aggregation unit groups and sends the original data collected by each data acquisition number through internal optical fibers, network cables, 485 communication cables or other serial ports to the data processing unit. Since the transmission distance is relatively long, in order to ensure the security of power station data, encryption units need to be set at both ends to encrypt and decrypt the collected data to ensure the stability and security of data transmission.

[0041] The sub - unit data processing unit coordinates and controls the data sent by the data aggregation unit and the data transmission unit, and performs processing such as addition, subtraction, differentiation, and integration. For example, after the active and reactive power of the power station are processed, they are controlled for active and reactive power through the automatic generation control (AGC) control system / automatic voltage control (AVC) control system of the data control unit; the data storage unit is used to store accident information, data operation information, start - up and shutdown information of wind power stations, hydropower stations, photovoltaic power stations, and some other data that need to be queried, analyzed, and statistically processed. Here, the hard disk capacity and array requirements can be configured according to the amount of data to be stored as required by the user.

[0042] The sub - unit data acquisition unit includes a power station communication server, a main centralized control communication server, and a standby centralized control communication server. The main centralized control communication server and the standby centralized control communication server are respectively connected to the main centralized control and the standby centralized control, and the main centralized control and the standby centralized control are built in different locations; In addition to the main and standby communication servers in the sub - unit data acquisition unit processing the data with precise algorithms and programs, and packing the power station communication data, they also encrypt the data, and then send the data to the main and standby centralized control for processing and use.

[0043] In the actual application process, there are 3 links for the power station data to be sent to the power grid, and the communication of these three links is two - way. The main centralized control and the standby centralized control are embedded with automatic trend analysis control.

[0044] Specifically, the trend analysis methods include: (1)Time and frequency judgment: PT(A) ≥ P domain PT(A) represents the action frequency of event A within time T; The P domain represents the set threshold of the action frequency within time T; If the requirement is met, it is judged that the action frequency of event A within time T is too high, meeting the trend analysis requirement. Then, the action frequency within time T is statistically counted using the statistical method in the background, and a prompt is given through the screen search method. The statistical result is recorded in the historical database for later data query and data analysis comparison.

[0045] (2)Automatic shutdown judgment for accident events A ∈ B (shutdown) A represents event A; B (shutdown) represents all events that affect accident shutdown; When the action frequency of event A within time T is too high, meeting the trend analysis requirement, and event A also belongs to the events that affect accident shutdown; and the accident shutdown delay time is less than or equal to 2 minutes, then the device automatically enters the shutdown process to avoid equipment damage caused by accident shutdown due to late operation by personnel. If the event also belongs to the events that affect accident shutdown; and the accident shutdown delay time is greater than 2 minutes, then the background uses a timer to monitor this event. If when the event enters the 2-minute tripping time of the delay and the event has not returned, and the unit is currently in the power generation state, the device automatically enters the shutdown process to avoid equipment damage caused by accident shutdown due to late operation by personnel.

[0046] In the specific application process, the original power station data is sent from the power station to the provincial dispatching center, forming the first loop link with the original power station data sent to the main control center for use. The data on this link has dual-loop and dual-channel uploads.

[0047] When the original power station data is sent from the power station to the provincial dispatching center, forming the second loop link with the original power station data sent to the standby control center for use; the data on this link also has dual-loop and dual-channel uploads; When the original power station data is sent from the standby control center for use to the provincial dispatching center, forming the third loop link with the original power station data sent to the main control center for use; the data on this link has dual-loop and dual-channel uploads; When any one of the power station dispatching data private network, the main control data private network, and the standby control data private network is damaged, it can be uploaded through the other path and form a ring network to ensure dual-loop and dual-channel uploads.

[0048] The control center adopts a control method combining virtual and real, specifically: Two limits of 100% and 0% of the communication rate are set, corresponding to the real and virtual states respectively.

[0049] For the virtual and real states, corresponding control authorities are set; The control authorities are set to green, red, yellow, and gray. Green represents a communication rate of 100% and the current control authority is in the current primary (standby) use of the centralized control; red represents that the current communication rate is greater than 0% and less than 100%, and the control authority is in the current primary (standby) use of the centralized control; yellow represents that the current communication rate is greater than 0% and less than 100%, and the control authority is not in the current primary (standby) use of the centralized control; gray represents a communication rate of 0% and the current control authority is not in the current primary (standby) use of the centralized control.

[0050] The centralized control adopts a control method combining virtual and real, and specifically also includes: (1) When Φ real = 100%; Φ virtual = 0% Φ real is the set primary use of the centralized control; Φ virtual is the set standby use of the centralized control.

[0051] If the requirements are met, the communication will automatically switch to the primary use of the centralized control, and the control authorities of the power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the primary use of the centralized control, so as to avoid the system being unable to operate due to the failure to switch the authority during operation; at the same time, all control authorities of the standby use (centralized control virtual centralized control) become gray, and all control authorities of the primary use of the centralized control become green (2) When Φ real = 0%; Φ virtual = 100% Φ real is the set primary use of the centralized control; Φ virtual is the set standby use of the centralized control.

[0052] If the requirements are met, the communication will automatically switch to the standby use of the centralized control, and the control authorities of the power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the standby use of the centralized control, so as to avoid the system being unable to operate due to the failure to switch the authority during operation; at the same time, all control authorities of the primary use (centralized control virtual centralized control) become gray, and all control authorities of the standby use of the centralized control become green (3) When 0% < Φ real < 100%, 0% < Φ virtual < 100% and Φ real > Φ virtual; Φ real is the set primary use of the centralized control; Φ virtual is the set standby use of the centralized control.

[0053] If the requirements are met, the communication will automatically switch to the primary centralized control for use, and the control authorities of power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the primary centralized control for use, so as to prevent the system from being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the standby use (virtual centralized control) will turn yellow, and all control authorities of the primary centralized control for use will turn red. (4)When 0% < Φ actual < 100%, 0% < Φ virtual < 100% and Φ actual > Φ virtual; Φ actual is the set primary centralized control for use; Φ virtual is the set standby centralized control for use.

[0054] If the requirements are met, the communication will automatically switch to the standby centralized control for use, and the control authorities of power station units, power station utilities, power station switchyards, power station auxiliary control systems, etc. will be synchronously switched to the standby centralized control for use, so as to prevent the system from being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the primary use (virtual centralized control) will turn yellow, and all control authorities of the standby centralized control for use will turn red.

[0055] Embodiment 2 In step 1 of this embodiment, the rough processing of the sub - center data exists in the distributed control center, which simply performs PID and 4 - 20mA analog quantity conversions on the active power, reactive power, temperature quantity, and digital quantity data of the distribution center, and processes the DI quantity through a binary algorithm.

[0056] Specifically, for example, the conventional method for processing DI quantity is to use the rising edge and falling edge of the pulse module for processing. In this patent, the binary system is used to process the DI quantity. For example, if DI1 is greater than 0, it is displayed as 1, and when DI1 is 0, it is displayed as 0, and other states are not displayed.

[0057] In step 4, the sub - center data acquisition unit performs algorithm processing on the uploaded centralized data, including: performing a blocking operation on redundant points using a logical algorithm.

[0058] Specifically: DIMUUY[1] represents the control authority at XX Centralized Control, DIMUUY[2] represents the control authority at XX Power Station, and DIMUUY[3] represents the control authority at YY Centralized Control. If DIMUUY[1]=1, it indicates that the control authority is at XX Centralized Control; conversely, if DIMUUY[1]=0, it indicates that the control authority is not at XX Centralized Control. If DIMUUY[2]=1, it indicates that the control authority is at XX Power Station; conversely, if DIMUUY[2]=0, it indicates that the control authority is not at XX Power Station. If DIMUUY[3]=1, it indicates that the control authority is at YY Centralized Control; conversely, if DIMUUY[3]=0, it indicates that the control authority is not at YY Centralized Control. If DIMUUY[1]=1, DIMUUY[2]=0, and DIMUUY[3]=0, then the control authority of XX Centralized Control is true and can control the units in the current basin. If DIMUUY[1]=0, DIMUUY[2]=1, and DIMUUY[3]=0, then the control authority of XX Power Station is true and can control the units in the current basin. If DIMUUY[1]=0, DIMUUY[2]=0, and DIMUUY[3]=3, then the control authority of YY Centralized Control is true and can control the units in the current basin. If DIMUUY[1]=1, DIMUUY[2]=1, DIMUUY[3]=0 or DIMUUY[1]=1, DIMUUY[2]=1, DIMUUY[3]=1 or DIMUUY[1]=0, DIMUUY[2]=1, DIMUUY[3]=1 or DIMUUY[1]=1, DIMUUY[2]=0, DIMUUY[3]=1, at this time, the control authorities of XX Centralized Control, XX Power Station, and YY Centralized Control are all false, and all units are uncontrollable at this time. At this time, the authority automatically switches to XX Power Station, and only XX Power Station has the control authority.

[0059] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. Remote coordination control method for high proportion of new energy and virtual-real combination of hydropower in multiple river basins, characterized in that, It includes the following steps: Step 1: The original data of the power station collects data through the sub-control center and conducts rough processing; Step 2: Send each piece of original data after rough processing of the power station to the sub-data aggregation unit; Step 3: The sub-data aggregation unit aggregates the data and forms a centralized data to send to the sub-data acquisition unit; Step 4: The sub-data acquisition unit conducts algorithm processing on the sent centralized data and sends it to the centralized data rough processing unit.

2. The remote coordinated control method for high-proportion new energy and virtual-real combination of multi-basin hydropower according to claim 1, characterized in that The sub-control center includes: a backbone network composed of Core Switch A in Security Zone 1 and Core Switch B in Security Zone 1, and an engineer workstation, and the engineer workstation is responsible for data rough processing; The sub-data aggregation unit includes a gateway server; The sub-data acquisition unit includes a power station communication server, a main control communication server for use, and a standby control communication server for use. The control communication server for use includes / APP / his server, voice and on-call machine; the main control communication server for use and the standby control communication server for use are respectively connected to the main control for use and the standby control for use, and the main control for use and the standby control for use are built in different locations; Both the main control communication server for use and the standby control communication server for use include a data acquisition unit, a data processing system, and a data control unit; The sub-data acquisition unit conducts algorithm processing on the sent centralized data. Among them, the power station communication server conducts precise algorithm and program processing on the data and conducts packet processing on the power station communication data; In addition to conducting precise algorithm and program processing on the data and conducting packet processing on the power station communication data, the main control communication server for use and the standby control communication server in the sub-data acquisition unit also conduct encryption processing on the data, and then send the data to the main control and standby control for use for processing and use; The centralized data fine processing unit is set in the provincial dispatching and local dispatching network unit.

3. The remote coordinated control method for high-proportion new energy and multi-basin hydropower virtual-real integration according to claim 2, characterized in that, There are 3 links for the power station data to be sent to the power grid, and the communication of these three links is two-way. The main control for use and the standby control for use are embedded with an automatic trend analysis method for control.

4. The remote coordinated control method for high-proportion new energy and virtual-real combination of multi-basin hydropower according to claim 3, wherein The trend analysis method includes: (1) Time and frequency judgment: PT(A) ≥ P domain PT(A) represents the action frequency of event A within time T; The P domain represents the set threshold of the action frequency within time T; If the requirement is met, it is judged that the action frequency of event A within time T is too high, meeting the trend analysis requirement. Then, the action frequency within time T is statistically analyzed by the statistical method in the background, and a prompt is given through the screen search method, and the statistical result is recorded in the historical database for later data query and data analysis comparison; (2) Automatic shutdown judgment for accident events A ∈ B (shutdown) A represents event A; B (shutdown) represents all events that affect accident shutdown; When the action frequency of Event A within Event T is too high, meeting the trend analysis requirements, and Event A also belongs to the events that affect accident shutdown; and the accident shutdown delay time is less than or equal to 2 minutes, then the device automatically enters the shutdown process to avoid equipment damage caused by accident shutdown due to late operation by personnel. If the event also belongs to the events that affect accident shutdown; and the accident shutdown delay time is greater than 2 minutes, then the background uses a timer to monitor this event. If when entering the 2-minute tripping time of this event, the event has not been restored and the unit is currently in the power generation state, then the device automatically enters the shutdown process to avoid equipment damage caused by accident shutdown due to late operation by personnel.

5. The remote coordinated control method for high proportion of new energy and virtual-real combination of multi-basin hydropower according to claim 4, wherein The original power station data is sent from the power station to the provincial dispatching center, forming the first loop link with the original power station data sent to the main control center for use. The data on this link has dual-loop and dual-channel uploads. When the original power station data is sent from the power station to the provincial dispatching center, forming the second loop link with the original power station data sent to the standby control center for use. The data on this link also has dual-loop and dual-channel uploads. When the original power station data is sent from the standby control center for use to the provincial dispatching center, forming the third loop link with the original power station data sent to the main control center for use. The data on this link has dual-loop and dual-channel uploads. When any one of the power station dispatching data private network, the main control data private network, and the standby control data private network is damaged, it can be uploaded through the other path and form a ring network to ensure dual-loop and dual-channel uploads.

6. The remote coordinated control method for high proportion of new energy and virtual-real combination of multi-basin hydropower according to claim 5, characterized in that, The control center adopts a control method combining virtual and real, setting two limits for the communication rate, 100% and 0%, corresponding to the real and virtual states respectively.

7. The remote coordinated control method for high proportion of new energy and virtual-real combination of multi-basin hydropower according to claim 6, characterized in that Corresponding control authorities are set for the virtual and real states. The control authorities are set to green, red, yellow, and gray. Green represents that the communication rate is 100% and the current control authority is in the current main control center for use or the standby control center for use; red represents that the current communication rate is greater than 0% and less than 100%, and the control authority is in the current main control center for use or the standby control center for use; yellow represents that the current communication rate is greater than 0% and less than 100%, and the control authority is not in the current main control center for use or the standby control center for use; gray represents that the communication rate is 0% and the current control authority is not in the current main control center for use or the standby control center for use.

8. The remote coordinated control method for high-proportion new energy and multi-basin hydropower with virtual-real combination according to claim 7, characterized in that, The control method combining virtual and real adopted by the control center is as follows: (1) When Φ real = 100%; Φ virtual = 0% Φ real is the set main control center for use; Φ virtual is the set standby control center for use; If the requirements are met, the communication automatically switches to the main control center for use, and the control authorities of the power station units, the power station public facilities, the power station switchyard, the power station auxiliary control system, etc. are synchronously switched to the main control center for use to avoid the system being unable to operate due to failure to switch authorities during operation; at the same time, all control authorities of the standby control center (virtual control center) become gray, and all control authorities of the main control center for use become green. (2) When Φ real = 0%; Φ virtual = 100% Φ real is the set main control center for use; Φ virtual is the set standby control center for use; If the requirements are met, the communication will automatically switch to the standby centralized control, and the control authorities of the power station units, power station common facilities, power station switchyard, power station auxiliary control system, etc. will be synchronously switched to the standby centralized control to prevent the system from being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the primary (centralized control virtual centralized control) become gray, and all control authorities of the standby centralized control become green. (3) When 0% < Φactual < 100%, 0% < Φvirtual < 100% and Φactual > Φvirtual; Φactual is the set primary centralized control for use; Φvirtual is the set standby centralized control for use; If the requirements are met, the communication will automatically switch to the primary centralized control for use, and the control authorities of the power station units, power station common facilities, power station switchyard, power station auxiliary control system, etc. will be synchronously switched to the primary centralized control for use to prevent the system from being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the standby (centralized control virtual centralized control) become yellow, and all control authorities of the primary centralized control for use become red. (4) When 0% < Φactual < 100%, 0% < Φvirtual < 100% and Φactual > Φvirtual; Φactual is the set primary centralized control for use; Φvirtual is the set standby centralized control for use; If the requirements are met, the communication will automatically switch to the standby centralized control, and the control authorities of the power station units, power station common facilities, power station switchyard, power station auxiliary control system, etc. will be synchronously switched to the standby centralized control to prevent the system from being inoperable due to the failure to switch authorities during operation. At the same time, all control authorities of the primary (centralized control virtual centralized control) become yellow, and all control authorities of the standby centralized control become red.

9. The remote coordinated control method for high proportion of new energy and virtual-real combination of multi-basin hydropower according to claim 8, characterized in that, In step 1, the rough processing of sub - data exists in the distributed control center, which simply performs PID and 4 - 20mA analog quantity conversion on the active power, reactive power, temperature quantity, and digital quantity data of the distributed control center, and processes the DI quantity through a binary algorithm.

10. The remote coordinated control method for high proportion of new energy and virtual-real combination of multi-basin hydropower according to claim 9, characterized in that, In step 4, the sub - data acquisition unit performs algorithm processing on the centralized data sent up, including: performing a blocking operation on redundant points using a logical algorithm.

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