A non-uniform power supply power data acquisition calculation method

Abstract

The present application relates to the technical field of power dispatch, in particular to a non-uniform power supply power data acquisition calculation method, comprising: each non-uniform power supply concentrator collecting active power sampling data of each electric energy meter in real time, processing and storing to obtain non-uniform power supply real-time active power data; each non-uniform power supply concentrator transmitting non-uniform power supply active power data to the power information acquisition system master station of the management information district in real time through the boundary firewall between the wireless public network and the power user power information acquisition system; and accumulating and calculating the non-uniform power supply power data of each region and the non-uniform power supply power data directly acquired by the dispatching data network to obtain real-time data of the total non-uniform power supply power of the dispatching range. The non-uniform power supply power is acquired by the power information acquisition and regulation and control cloud interaction mode, the safe and stable operation of the equipment is preferentially ensured, and the real-time and stability of the active power data transmission are effectively ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power dispatching, and in particular to a method for collecting and calculating electric power data of a non-centrally dispatched power supply. Background Art

[0002] Full-scale power generation is a key parameter reflecting the volatile nature of regional electricity demand. Its stable data is a crucial indicator for the safe and reliable operation of power dispatch and control systems. Full-scale power generation is categorized into two main types: centrally dispatched and non-centrally dispatched. Centrally dispatched power refers to power generation units whose transmission and transformation equipment is managed by the power generation company and centrally dispatched by the grid company. Non-centrally dispatched power primarily refers to captive power plants, distributed wind farms, photovoltaic power stations, and small hydropower facilities connected to distribution networks of 10kV and below. These sources are not subject to the centralized dispatch of grid companies due to their small individual capacity. With the rapid growth of distributed renewable energy capacity, particularly wind and photovoltaic power, the proportion of non-centrally dispatched power is rapidly increasing. The significant susceptibility of wind and photovoltaic power to weather changes makes non-centrally dispatched power data susceptible to rapid fluctuations. Since the power generation companies to which non-centrally controlled power sources belong have very limited operation and maintenance resources, they are usually not equipped with dedicated telecontrol devices and do not have conventional communication methods such as dedicated network lines. They usually use non-centrally controlled collection terminals with 4G network communication to collect and forward power data, or directly use line power data from the substation side of the grid to which they are incorporated instead of power data. The data reliability and stability are relatively insufficient.

[0003] As power grid dispatching becomes more streamlined, the demand for comprehensive power data collection and monitoring coverage from all power sources is increasing. Existing power dispatch automation technology primarily targets major power plants and substations. When applied to smaller plants and substations and in remote areas, it struggles to simultaneously meet the requirements for low project investment, minimal construction and maintenance workload, and high information and data security. To ensure a stable and reliable power supply, leveraging existing power dispatch automation platforms and data communication channels to accurately, stably, and securely transmit power data from non-centrally dispatched power sources is crucial for ensuring balanced power dispatch.

[0004] Therefore, it is necessary to design a method for collecting and calculating power data of non-coordinated power supply. Summary of the Invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a method for collecting and calculating power data of a non-coordinated power supply.

[0006] To achieve the above object, the present invention adopts the following technical solution: a method for collecting and calculating power data of a non-centrally controlled power supply, comprising the following steps:

[0007] Step S1: Each non-centrally controlled power concentrator collects active power sampling data from each electric energy meter in real time, processes and stores the data to obtain real-time active power data of the non-centrally controlled power source;

[0008] Step S2: Each non-centrally controlled power concentrator transmits the non-centrally controlled power active power data to the power consumption information collection system master station of the management information area in real time via the wireless public network and the boundary firewall between the power user power consumption information collection system and the wireless public network;

[0009] Step S3: The main station of the power consumption information collection system uses the Kafka system to transmit the active power data of the non-centrally controlled power supply to the data center and data transfer system in real time;

[0010] Step S4: The data transfer system uses the real-time active power data and the non-centrally controlled power supply ledger information provided by the data center to filter and calculate the power data of non-centrally controlled power supplies in each region, and sends the power data of non-centrally controlled power supplies in each region to the provincial control cloud in real time. The data is then transmitted to the real-time data platform of the control cloud in the production control area via the reverse physical isolation device of the control cloud area I / III.

[0011] Step S5: After the SCADA system of the production control area obtains the power data of non-centrally coordinated power sources in each region forwarded in real time by the main station of the power consumption information collection system, it accumulates the power data of non-centrally coordinated power sources in each region and the power data of non-centrally coordinated power sources directly collected from the dispatching data network to obtain the real-time data of the total power of non-centrally coordinated power sources in the dispatching range.

[0012] Furthermore, the non-centrally controlled power concentrator in step S2 includes a security protection module, which is used to encrypt information transmitted between the non-centrally controlled power concentrator and the main station of the power consumption information collection system through the wireless public network, and to perform identity identification, security authentication, and secure transmission of key information and sensitive information between the concentrator and the electricity meter.

[0013] Furthermore, the specific process of step S3 is as follows:

[0014] Step S301: Each non-centrally controlled power concentrator transmits active power data to the power consumption information collection system master station in real time;

[0015] Step S302: The main station of the power consumption information collection system publishes the active power data of the non-centrally controlled power supply to the Kafka system of the main station of the power consumption information collection system and the data middle station in real time through the distributed Kafka system;

[0016] Step S303: The Kafka system of the data center is connected to the real-time database of the data center in real time, and a dedicated data transfer system is deployed at the same time to filter and process the real-time data of active power through the non-centrally controlled power supply ledger and user information.

[0017] Furthermore, the specific process of step S4 is as follows:

[0018] Step S401: The marketing management system synchronizes the non-centrally controlled power supply ledger and user information to the power consumption information collection system master station via the information intranet horizontal inter-domain boundary firewall;

[0019] Step S402: The main station of the power consumption information collection system synchronously pushes the non-centrally controlled power supply ledger and user information to the DWS database of the data center;

[0020] Step S403: The data center provides API services to collect the previous day's non-centrally controlled power supply ledger and user information into the provincial control cloud database, and update the full data once a day;

[0021] Step S404: The data transfer system calculates and processes the active power data in real time, connects it to the provincial control cloud through the firewall, and transmits it to the real-time data platform of the control cloud in the production control area through the reverse physical isolation device of Zone I / III;

[0022] Step S405: The provincial control cloud collects real-time active power data and combines it with the non-centrally controlled power source ledger information data to calculate the real-time power data of the non-centrally controlled power sources within the last 5 minutes every 2 minutes; and calculates the frozen power data of the non-centrally controlled power sources within the last 2 hours every 5 minutes;

[0023] The calculation formula for real-time power data of non-centrally coordinated power sources is:

[0024]

[0025] Where, It is t k The non-coordinated power supply at all times, It is t k The power of the jth non-centrally controlled power source in the i-th region at the moment, N is the number of regions within the control range, M i is the total number of non-centrally controlled power sources in the i-th region;

[0026] The calculation formula for the power freeze data of non-centrally controlled power sources is:

[0027]

[0028] Where, It is t k The non-coordinated power supply at all times, It is t k The power of the jth non-centrally controlled power source in the i-th region at the moment, N is the number of regions within the control range, M i is the total number of non-centrally controlled power sources in the i-th region;

[0029] Step S406: The provincial regulation and control cloud generates an E file based on the calculated non-uniformly regulated power supply power real-time data, and pushes the file to the D5000 system every 1 minute;

[0030] Step S407: The D5000 system parses the E file to obtain the non-uniformly regulated power supply power data of each region and real-time forwards the data to the SCADA system.

[0031] Further, the specific process of the step S5 is:

[0032] Step S501: The SCADA system obtains the non-uniformly regulated power supply power real-time data forwarded by the power utilization information acquisition system master station;

[0033] Step S502: The non-uniformly regulated power supply with the dispatching data network direct sampling condition performs high-precision sampling of the non-uniformly regulated power supply power through the measurement and control device, and real-time transmits the data to the 35kV dispatching data network through the remote device and the longitudinal encryption device;

[0034] Step S503: The local dispatch D5000 system front-end steady-state data acquisition server real-time collects the non-uniformly regulated power supply power direct sampling data transmitted by the dispatching data network and forwards the data to the SCADA system;

[0035] Step S504: The SCADA system accumulates the non-uniformly regulated power supply power real-time data forwarded by the power utilization information acquisition system master station and the non-uniformly regulated power supply power data collected by the local dispatch D5000 system front-end steady-state data acquisition server to obtain the real-time data of the total non-uniformly regulated power supply power in the dispatching range.

[0036] From the above description of the present application, compared with the prior art, the non-uniformly regulated power supply power data acquisition and calculation method of the present application at least has one of the following beneficial effects:

[0037] 1. The non-uniformly regulated power supply power is calculated by the power utilization information acquisition and regulation and control cloud interaction method. Since the power utilization information acquisition system is an important data source for power settlement, the power generation enterprise to which the non-uniformly regulated power supply belongs can preferentially guarantee the investment of power meter and concentrator operation and maintenance resources, preferentially guarantee the safe and stable operation of these devices, and effectively guarantee the real-time and stability of the power data transmission;

[0038] 2. Although the power data is transmitted through the wireless public network, the system boundary, network, host / server are protected, which can effectively eliminate the power data breakpoint problem of the non-uniformly regulated power supply power data acquisition terminal in the D5000 direct sampling forwarding data 4G network communication, and can avoid using the power grid side substation power data to replace the non-uniformly regulated power supply power data, thereby guaranteeing the reliability of the non-uniformly regulated power supply power data source;

[0039] 3. The power data of the non-centrally controlled power supply of the present invention originates from the power consumption information collection system. The power data obtained through the wireless public network originates from the concentrator equipped with a security protection module, and is connected to the main station of the power consumption information collection system of the management information area through the firewall device, and is connected to the production control area SCADA system through the provincial control cloud I / III zone horizontal physical isolation device. The entire power data collection and transfer process is within the existing network security protection system, which ensures the security of the power data source and data transmission of the non-centrally controlled power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a flowchart of a method for collecting and calculating power data of a non-coordinated power supply according to an embodiment of the present invention;

[0041] Figure 2 This is a comparison diagram of non-coordinated hydropower data curves in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Reference Figure 1-Figure 2 As shown, a preferred embodiment of the present invention is a method for collecting and calculating power data of a non-coordinated power supply, comprising the following steps:

[0045] Step S1: Each non-centrally controlled power concentrator collects active power sampling data from each electric energy meter in real time, processes and stores the data to obtain real-time active power data of the non-centrally controlled power source;

[0046] Step S2: Each non-centrally controlled power concentrator transmits the non-centrally controlled power active power data to the power consumption information collection system master station of the management information area in real time via the wireless public network and the boundary firewall between the power user power consumption information collection system and the wireless public network;

[0047] Step S3: The main station of the power consumption information collection system uses the Kafka system to transmit the active power data of the non-centrally controlled power supply to the data center and data transfer system in real time;

[0048] Step S4: The data transfer system uses the real-time active power data and the non-centrally controlled power supply ledger information provided by the data center to filter and calculate the power data of non-centrally controlled power supplies in each region, and sends the power data of non-centrally controlled power supplies in each region to the provincial control cloud in real time. The data is then transmitted to the real-time data platform of the control cloud in the production control area via the reverse physical isolation device of the control cloud area I / III.

[0049] Step S5: After the SCADA system of the production control area obtains the power data of non-centrally coordinated power sources in each region forwarded in real time by the main station of the power consumption information collection system, it accumulates the power data of non-centrally coordinated power sources in each region and the power data of non-centrally coordinated power sources directly collected from the dispatching data network to obtain the real-time data of the total power of non-centrally coordinated power sources in the dispatching range.

[0050] As a preferred embodiment of the present invention, it may also have the following additional technical features:

[0051] In this embodiment, the non-centrally controlled power concentrator in step S2 includes a security protection module, which is used to encrypt information transmitted between the non-centrally controlled power concentrator and the main station of the power consumption information collection system through the wireless public network, and to perform identity identification, security authentication, and secure transmission of key information and sensitive information between the concentrator and the electricity meter.

[0052] In this embodiment, the specific process of step S3 is:

[0053] Step S301: Each non-centrally controlled power concentrator transmits active power data to the power consumption information collection system master station in real time;

[0054] Step S302: The main station of the power consumption information collection system publishes the active power data of the non-centrally controlled power supply to the Kafka system of the main station of the power consumption information collection system and the data middle station in real time through the distributed Kafka system;

[0055] Step S303: The Kafka system of the data center is connected to the real-time database of the data center in real time, and a dedicated data transfer system is deployed at the same time to filter and process the real-time data of active power through the non-centrally controlled power supply ledger and user information.

[0056] In this embodiment, the specific process of step S4 is:

[0057] Step S401: The marketing management system synchronizes the non-centrally controlled power supply ledger and user information to the power consumption information collection system master station via the information intranet horizontal inter-domain boundary firewall;

[0058] Step S402: The main station of the power consumption information collection system synchronously pushes the non-centrally controlled power supply ledger and user information to the DWS database of the data center;

[0059] Step S403: The data center provides API services to collect the previous day's non-centrally controlled power supply ledger and user information into the provincial control cloud database, and update the full data once a day;

[0060] Step S404: The data transfer system calculates and processes the active power data in real time, connects it to the provincial control cloud through the firewall, and transmits it to the real-time data platform of the control cloud in the production control area through the reverse physical isolation device of Zone I / III;

[0061] Step S405: The provincial control cloud collects real-time active power data and combines it with the non-centrally controlled power source ledger information data to calculate the real-time power data of the non-centrally controlled power sources within the last 5 minutes every 2 minutes; and calculates the frozen power data of the non-centrally controlled power sources within the last 2 hours every 5 minutes;

[0062] The calculation formula for real-time power data of non-centrally coordinated power sources is:

[0063]

[0064] Where, It is t k The non-coordinated power supply at all times, It is t k The power of the jth non-centrally controlled power source in the i-th region at the moment, N is the number of regions within the control range, M i is the total number of non-centrally controlled power sources in the i-th region;

[0065] The calculation formula for the power freeze data of non-centrally controlled power sources is:

[0066]

[0067] Where, It is t k The non-coordinated power supply at all times, It is t k The power of the jth non-centrally controlled power source in the i-th region at the moment, N is the number of regions within the control range, M i is the total number of non-centrally controlled power sources in the i-th region;

[0068] Step S406: The provincial control cloud generates an E file based on the calculated real-time power data of the non-centrally controlled power source, and pushes the file to the D5000 system every minute;

[0069] Step S407: The D5000 system parses the E file to obtain the power data of the non-centrally controlled power sources in each region and forwards it to the SCADA system in real time.

[0070] In this embodiment, the specific process of step S5 is:

[0071] Step S501: The SCADA system obtains the real-time power data of the non-centrally controlled power source forwarded by the power consumption information collection system master station;

[0072] Step S502: The non-centrally controlled power source that meets the conditions for direct sampling from the dispatching data network performs high-precision sampling of the power of the non-centrally controlled power source through the measurement and control device, and transmits the sample to the 35kV dispatching data network in real time through the telecontrol device and the longitudinal encryption device;

[0073] Step S503: The front-end steady-state data acquisition server of the ground dispatching D5000 system collects the non-centrally dispatched power source direct acquisition data transmitted by the dispatching data network in real time and forwards it to the SCADA system;

[0074] Step S504: The SCADA system accumulates the real-time power data of non-centrally regulated power sources forwarded by the power consumption information collection system master station and the non-centrally regulated power data collected by the front-end steady-state data collection server of the ground-regulating D5000 system to obtain the real-time data of the total power of non-centrally regulated power sources within the control range.

[0075] See also Figure 2 , which shows a comparison diagram of non-coordinated hydropower data curves of a specific embodiment of the present application.

[0076] like Figure 2 As shown in the figure, a data transfer system is deployed in the management information area of ​​the provincial power dispatching and control center. The non-centrally dispatched hydropower power data of a certain day is selected as a verification data set to conduct a functional verification of a non-centrally dispatched power source power data collection and calculation method and system based on electricity consumption information collection and control cloud interaction.

[0077] It should be noted that Figure 2 In the data, the real-time / frozen data of the collected power is the sum of the non-centrally controlled power sources' real-time power data forwarded by the power consumption information collection system master station, which is processed by the data transfer system and collected and calculated through the control cloud interaction; the D5000 directly collected and forwarded data is the power data collected and forwarded by the non-centrally controlled power source power generation data collection terminal using 4G network communication, the active power replacement power data of the non-centrally controlled power source incorporated into the power grid substation side, and the non-centrally controlled power source power data directly collected by the front-end steady-state data collection server of the local control D5000 system through the power dispatching data network.

[0078] exist Figure 2In the present application, the non-uniformly regulated hydropower power consumption data curve of a certain day in YT and SR two cities is obtained, and it can be seen that the real-time and frozen two types of data of power consumption are very close. Due to the different time scales of sampling calculation, the non-uniformly regulated power data obtained by the power consumption information collection and regulation cloud interaction mode has strong stability.

[0079] In Figure 2 In the non-uniformly regulated hydropower power consumption data curve of SR city, compared with the high amplitude fluctuation of D5000 direct sampling and forwarding data, the power consumption data obtained by the present application has obvious weakening of high amplitude fluctuation of power data while keeping consistent with the change characteristics of D5000 direct sampling and forwarding data, and can eliminate the breakpoint problem in D5000 direct sampling and forwarding data from 0h to 1h, so that the non-uniformly regulated power data obtained by the power consumption information collection and regulation cloud interaction mode has strong reliability.

[0080] In Figure 2 In the present application, the non-uniformly regulated power data is obtained from the power consumption information collection system, the power data obtained by the wireless public network is obtained from the concentrator with safety protection module, and the power data is accessed to the management information area power consumption information collection system master station through the firewall device, and is accessed to the SCADA system of production control area through the provincial regulation cloud I / III area horizontal physical isolation device. The whole power data collection process is in the existing network security protection system, so that the non-uniformly regulated power data obtained by the power consumption information collection and regulation cloud interaction mode has strong security.

[0081] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A method for collecting and calculating power data of a non-centrally controlled power supply, characterized in that: The steps include: Step S1: Each non-centrally controlled power concentrator collects active power sampling data from each electric energy meter in real time, processes and stores the data to obtain real-time active power data of the non-centrally controlled power source; Step S2: Each non-centrally controlled power concentrator transmits the non-centrally controlled power active power data to the power consumption information collection system master station of the management information area in real time via the wireless public network and the boundary firewall between the power user power consumption information collection system and the wireless public network; Step S3: The main station of the power consumption information collection system uses the Kafka system to transmit the active power data of the non-centrally controlled power supply to the data center and data transfer system in real time; Step S4: The data transfer system uses the real-time active power data and the non-centrally controlled power supply ledger information provided by the data center to filter and calculate the power data of non-centrally controlled power supplies in each region, and sends the power data of non-centrally controlled power supplies in each region to the provincial control cloud in real time. The data is then transmitted to the real-time data platform of the control cloud in the production control area via the reverse physical isolation device of the control cloud area I / III. Step S5: After the SCADA system of the production control area obtains the power data of non-centrally coordinated power sources in each region forwarded in real time by the main station of the power consumption information collection system, it accumulates the power data of non-centrally coordinated power sources in each region and the power data of non-centrally coordinated power sources directly collected from the dispatching data network to obtain the real-time data of the total power of non-centrally coordinated power sources in the dispatching range.

2. The method for collecting and calculating power data of a non-centrally controlled power supply according to claim 1, characterized in that: The non-centrally controlled power concentrator in step S2 includes a security protection module, which is used to encrypt information transmitted between the non-centrally controlled power concentrator and the main station of the power consumption information collection system through the wireless public network, and to perform identity identification, security authentication, and secure transmission of key information and sensitive information between the concentrator and the electric energy meter.

3. The method for collecting and calculating power data of a non-centrally controlled power supply according to claim 2, characterized in that: The specific process of step S3 is: Step S301: Each non-centrally controlled power concentrator transmits active power data to the power consumption information collection system master station in real time; Step S302: The main station of the power consumption information collection system publishes the active power data of the non-centrally controlled power supply to the Kafka system of the main station of the power consumption information collection system and the data middle station in real time through the distributed Kafka system; Step S303: The Kafka system of the data center is connected to the real-time database of the data center in real time, and a dedicated data transfer system is deployed at the same time to filter and process the real-time data of active power through the non-centrally controlled power supply ledger and user information.

4. The method for collecting and calculating power data of a non-centrally controlled power supply according to claim 3, characterized in that: The specific process of step S4 is as follows: Step S401: The marketing management system synchronizes the non-centrally controlled power supply ledger and user information to the power consumption information collection system master station via the information intranet horizontal inter-domain boundary firewall; Step S402: The main station of the power consumption information collection system synchronously pushes the non-centrally controlled power supply ledger and user information to the DWS database of the data center; Step S403: The data center provides API services to collect the previous day's non-centrally controlled power supply ledger and user information into the provincial control cloud database, and update the full data once a day; Step S404: The data transfer system calculates and processes the active power data in real time, connects it to the provincial control cloud through the firewall, and transmits it to the real-time data platform of the control cloud in the production control area through the reverse physical isolation device of Zone I / III; Step S405: The provincial control cloud collects real-time active power data and combines it with the non-centrally controlled power source ledger information data to calculate the real-time power data of the non-centrally controlled power sources within the last 5 minutes every 2 minutes; and calculates the frozen power data of the non-centrally controlled power sources within the last 2 hours every 5 minutes; The calculation formula for real-time power data of non-centrally coordinated power sources is: Where, It is t k Non-coordinated power supply at all times, It is t k The power of the jth non-centrally controlled power source in the i-th region at the moment, N is the number of regions within the control range, M i is the total number of non-centrally controlled power sources in the i-th region; The calculation formula for the power freeze data of non-centrally controlled power sources is: Where, It is t k Non-coordinated power supply at all times, It is t k The power of the jth non-centrally controlled power source in the i-th region at the moment, N is the number of regions within the control range, M i is the total number of non-centrally controlled power sources in the i-th region; Step S406: The provincial control cloud generates an E file based on the calculated real-time power data of the non-centrally controlled power source, and pushes the file to the D5000 system every minute; Step S407: The D5000 system parses the E file to obtain the power data of the non-centrally controlled power sources in each region and forwards it to the SCADA system in real time.

5. The method for collecting and calculating power data of a non-centrally controlled power supply according to claim 4, characterized in that: The specific process of step S5 is as follows: Step S501: The SCADA system obtains the real-time power data of the non-centrally controlled power source forwarded by the power consumption information collection system master station; Step S502: The non-centrally controlled power source that meets the conditions for direct sampling from the dispatching data network performs high-precision sampling of the power of the non-centrally controlled power source through the measurement and control device, and transmits the sample to the 35kV dispatching data network in real time through the telecontrol device and the longitudinal encryption device; Step S503: The front-end steady-state data acquisition server of the ground dispatching D5000 system collects the non-centrally dispatched power source direct acquisition data transmitted by the dispatching data network in real time and forwards it to the SCADA system; Step S504: The SCADA system accumulates the real-time power data of non-centrally regulated power sources forwarded by the power consumption information collection system master station and the non-centrally regulated power data collected by the front-end steady-state data collection server of the ground-regulating D5000 system to obtain the real-time data of the total power of non-centrally regulated power sources within the control range.

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