Load automatic adjustment system and method suitable for electric power spot transaction

Abstract

The invention relates to the technical field of power system automation and control, in particular to an automatic load adjusting system and method suitable for power spot transaction. The invention relates to an automatic load adjustment system suitable for electric power spot transaction and a power generation spot transaction platform system, which are used for providing real-time clearing results and pre-clearing results including a plurality of time points in the future. The data acquisition and release system is used for converting the clearing result into a power value per minute of a time sequence; the centralized control center computer monitoring system is used for generating a load set value; the power station control unit is used for automatically adjusting the output of the corresponding power generation unit; and the security I area communication gateway is used for realizing data communication with the data acquisition and release system in the security II area. The electric power spot transaction platform is deeply integrated with the power plant monitoring system and the AGC system, so that the whole process automation from acquisition of clearing results to issuing of load instructions and final execution is realized, the labor intensity of operators is greatly reduced, and the overall operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of power system automation and control technology, and in particular to an automatic load adjustment system and method adapted to electricity spot trading. Background Technology

[0002] The current load adjustment process for power plants participating in electricity spot trading relies primarily on manual operation. Specifically, operators at the control center need to continuously monitor real-time clearing information released by the electricity spot trading platform, and then manually input load commands on the operator station screen of the power plant's computer monitoring system to adjust the generation units of each power station. This model has several significant drawbacks: Inefficiency and high workload: The clearing results of the electricity spot market fluctuate frequently, typically updating every 15 minutes. Monitoring personnel need to continuously monitor and manually adjust multiple power stations and multiple generation units, making the operation extremely cumbersome, labor-intensive, and prone to human error due to fatigue. Poor real-time performance and accuracy: Manual operation cannot keep up with the rapid changes in the spot market, resulting in delays in adjustments. Insufficient automation: Although power plants are now generally equipped with Automatic Generation Control (AGC) systems, their traditional mode is mainly used to track the conventional planned curves issued by the grid dispatching agency, and is not deeply integrated with or automatically linked to the electricity spot trading platform. As a new and high-frequency source of instructions, the results of spot trading clearing cannot be automatically recognized and executed by existing AGC systems, forming "information silos" and "operational breakpoints" on the automation chain.

[0003] Therefore, there is an urgent need in this field for a technical solution that can automatically, accurately, and efficiently convert the clearing results of electricity spot transactions into actual output instructions for power plant generating units, in order to solve the series of problems caused by the above-mentioned manual operation and enhance the competitiveness and economic benefits of power plants in the spot market environment. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems of low efficiency, high workload, poor real-time performance and accuracy, and insufficient automation in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides an automatic load adjustment system adapted to electricity spot trading, comprising: The power generation spot trading platform system is used to provide real-time clearing results and pre-clearing results for multiple future time points; The data acquisition and publishing system is connected to the power generation spot trading platform system and is used to receive and integrate the real-time clearing results and the pre-clearing results, and convert them into power values ​​per minute in a time series. The centralized control center computer monitoring system is connected to the data acquisition and publishing system, and generates load setpoints from the power values ​​based on the power plant's grid-connected output dispatching instruction execution rules. The power plant AGC / AVC control unit is communicatively connected to the central control center computer monitoring system and is used to automatically adjust the output of the corresponding power generation unit according to the load set value. The Security Zone I communication gateway is deployed within Security Zone I of the power monitoring system to enable data communication with the data acquisition and publishing system in Security Zone II.

[0006] Preferably, the data acquisition and publishing system further includes: The received clearing data is decrypted and verified to determine whether the time difference between data transmission and reception is within the allowable threshold. The electricity spot clearing value is allocated to the total load of each power station according to preset rules, and a heartbeat signal is generated; The allocated load data and heartbeat signal are sent to the communication gateway in Security Zone I.

[0007] Preferably, the security zone I communication gateway determines the communication status with the data acquisition and publishing system based on the received heartbeat signal; Based on the communication status, the AGC setting permissions can be switched between spot trading mode and centralized control mode. The communication protocol is used to communicate with the power plant's AGC / AVC control unit.

[0008] Preferably, it also includes: a reverse network security isolation device, deployed between Security Zone II and Security Zone I, configured with an access control list, which only grants the minimum permissions required for data transmission, thereby enabling unidirectional data transmission from Security Zone II to Security Zone I.

[0009] Preferably, the spot trading mode in the power plant AGC / AVC control unit has a priority setting, which is lower than other control modes. When an interruption in communication with the spot trading system or a data anomaly is detected, the AGC setting permission is automatically switched to the centralized control mode or the power plant local mode.

[0010] Preferably, the automatic switching of AGC setting permissions to centralized control mode or power plant local mode includes: when switching from spot trading mode to centralized control mode, the system provides an option to maintain the spot trading load value before the switch, and displays the load value and the switching operation interface on the monitoring system operator station.

[0011] This invention also provides an automatic load adjustment method adapted to electricity spot trading, comprising: Real-time clearing data is obtained from the electricity spot trading platform, and the clearing data includes load values ​​at a fixed future time point; The data collection and distribution system receives and integrates the clearing data, converting it into a power value executed per minute; The integrated data is transmitted to the central control center's computer monitoring system via security protection facilities. Based on the clearing data, preset ramp rate limits, minimum technical output constraints, maximum technical output constraints, and adjustment dead zone settings, a load setpoint per minute is generated. The power generation unit output is automatically adjusted according to the load setpoint. During load adjustment, the lead time for load adjustment is set based on the dynamic performance of the unit to reduce the deviation of the power generation plan assessment.

[0012] Preferably, the formula for calculating the lead time of the load adjustment is:

[0013] in, This is the inherent time from the issuance of the load command to the start of the governor's operation. This refers to the time it takes for the unit to climb or landslide at the current head or load level.

[0014] Preferably, it further includes: When the cleared load exceeds the unit's maximum technical output or falls below the minimum technical output, if the unit is not started, a start-up standby reminder message will be generated. In the joint commissioning unit, the output values ​​of different power stations are allocated according to the boundary conditions of the interval flow. The downstream flow is calculated based on the upstream output, the flow per 1MW of output, and the ecological flow.

[0015] Preferably, it further includes: If no new clearing data is received within the preset time window, it is determined to be a clearing anomaly, and the previous valid clearing value is maintained as the basis for load setting; The monitoring system triggers a communication interruption alarm and automatically switches the AGC setting permissions to centralized control mode.

[0016] The technical solution of the present invention has the following advantages compared with the prior art: This invention discloses an automatic load adjustment system and method adapted to electricity spot trading. By deeply integrating the electricity spot trading platform with the power plant monitoring system and AGC system, it achieves full-process automation from obtaining clearing results to issuing load commands and final execution. This completely changes the outdated mode that relies on manual monitoring and input, greatly reducing the workload of operators, improving overall operational efficiency, and enabling real-time tracking and rapid response to clearing commands issued by the spot platform. It also ensures precise adjustments strictly according to rules such as ramp rate and technical output constraints. This effectively avoids delays and errors caused by manual operation, ensuring that power generation output strictly matches the trading plan and grid demand, improving the power plant's response quality to grid dispatch commands. Through reverse isolation devices and firewalls, it ensures unidirectional secure data transmission from Security Zone II to Security Zone I. When communication is interrupted or data is abnormal, the system can automatically and smoothly switch back from "spot trading" mode to traditional control mode and trigger an alarm, fully guaranteeing the continuity of power plant operation and the stability of the grid. Attached Figure Description

[0017] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a structural diagram of an automatic load adjustment system adapted to electricity spot trading provided by the present invention; Figure 2 This is a flowchart of an automatic load adjustment method adapted to electricity spot trading provided by the present invention; Figure 3 Adjust the preload curve to adjust the load. Figure 4 This is a curve for adjusting the load after the load is adjusted. Detailed Implementation

[0018] The core of this invention is to provide an automatic load adjustment system adapted to electricity spot trading. Based on real-time clearing data from the electricity spot trading platform, it calls station-level AGC and implements real-time tracking and automatic adjustment of load planning curves and spot clearing values ​​according to the grid output execution rules.

[0019] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please refer to Figure 1. Figure 1The present invention provides a logic diagram of an automatic load adjustment system adapted to electricity spot trading; the specific operation steps are as follows: The power generation spot trading platform system is used to provide real-time clearing results and pre-clearing results for multiple future time points; The data acquisition and publishing system, connected to the power generation spot trading platform system, is used to receive and integrate the real-time clearing results and the pre-clearing results, converting them into minute-by-minute power values ​​in a time series, and also includes: The received clearing data is decrypted and verified to determine whether the time difference between data transmission and reception is within the allowable threshold. The electricity spot clearing value is allocated to the total load of each power station according to preset rules, and a heartbeat signal is generated; The allocated load data and heartbeat signal are sent to the communication gateway in Security Zone I.

[0021] The centralized control center computer monitoring system is connected to the data acquisition and publishing system, and generates load setpoints from the power values ​​based on the power plant's grid-connected output dispatching instruction execution rules. The power plant AGC / AVC control unit is connected to the central control center computer monitoring system and is used to automatically adjust the output of the corresponding power generation unit according to the load set value. The spot trading mode in the power plant AGC / AVC control unit has a priority setting, which is lower than other control modes. When the interruption of communication with the spot trading system or data abnormality is detected, the AGC set value permission is automatically switched to the central control mode or the power plant local mode.

[0022] Specifically, when switching from spot trading mode to centralized control mode, the system provides an option to maintain the spot trading load value before the switch, and displays the load value and the switching operation interface on the monitoring system operator station.

[0023] The Security Zone I communication gateway is deployed within Security Zone I of the power monitoring system to enable data communication with the data acquisition and publishing system in Security Zone II.

[0024] In one embodiment, the security zone I communication gateway determines the communication status with the data acquisition and publishing system based on the received heartbeat signal; Based on the communication status, the AGC setting permissions can be switched between spot trading mode and centralized control mode. The communication protocol is used to communicate with the power plant's AGC / AVC control unit.

[0025] The reverse network security isolation device is deployed between Security Zone II and Security Zone I. It is configured with an access control list and only grants the minimum permissions required for data transmission, enabling one-way data transmission from Security Zone II to Security Zone I.

[0026] Specifically, access control devices, firewalls, or equivalent logical isolation facilities are installed between Security Zone I and Security Zone II. Security Zone II and Security Zone I are connected via an access control list (ACL) set up through a reverse network security isolation device, granting only the minimum permissions required for data transmission. A hardware firewall is deployed on the server side of Security Zone I, located between the reverse network security isolation device and the monitoring system server. This firewall only receives traffic from the reverse network security isolation device, ensuring that data can only be transmitted unidirectionally from Security Zone II to Security Zone I.

[0027] When switching from spot trading mode to centralized control mode, the system provides an option to maintain the spot trading load value before the switch and displays the load value and the switching operation interface on the monitoring system operator station.

[0028] This embodiment provides an automatic load adjustment system adapted to electricity spot trading. By deeply integrating the electricity spot trading platform with the power plant monitoring system and AGC system, it achieves full automation from obtaining clearing results to issuing load commands and final execution. This completely changes the outdated mode that relies on manual monitoring and input, greatly reducing the workload of operators, improving overall operational efficiency, and enabling real-time tracking and rapid response to clearing commands issued by the spot platform. It also makes precise adjustments strictly according to rules such as ramp rate and technical output constraints. This effectively avoids delays and errors caused by manual operation, ensuring that power generation output strictly matches the trading plan and grid demand, improving the power plant's response quality to grid dispatch commands. Through reverse isolation devices and firewalls, it ensures unidirectional secure data transmission from Security Zone II to Zone I. When communication is interrupted or data is abnormal, the system can automatically and smoothly switch back from "spot trading" mode to traditional control mode and trigger an alarm, fully guaranteeing the continuity of power plant operation and the stability of the grid.

[0029] like Figure 2 As shown, Figure 2 The present invention provides an automatic load adjustment method adapted to electricity spot trading, which is as follows: Step S201: Obtain real-time clearing data from the electricity spot trading platform, wherein the clearing data includes load values ​​at a fixed future time point; Step S202: Receive and integrate the clearing data through the data acquisition and publishing system, and convert it into a power value executed per minute; Step S203: Transmit the integrated data to the central control center's computer monitoring system via security protection facilities; Step S204: Generate a load setpoint per minute based on the clearing data, preset ramp rate limit, minimum technical output constraint, maximum technical output constraint, and dead zone adjustment settings; Step S205: Automatically adjust the output of the power generation unit according to the load setting value; In one embodiment, the automatic load adjustment technology for the output unit uses a spot clearing rule that is a fixed load value at a future time period, clearing a value every 15 minutes, for a total of 96 points.

[0030] The spot trading system typically generates the clearing value for the next point and the pre-clearing values ​​for the next three points (each 15 minutes represents one point) 15 minutes in advance. If four points are not generated by the 15-minute time limit, it is considered a clearing anomaly, and the previous point's clearing value will be retained. To handle special situations, a "Spot Trading" mode has been added to the AGC / AVC control unit program to adjust AGC setting permissions, and it can switch between traditional AGC modes. Its priority is lower than other options. In the event of a spot trading system malfunction or communication interruption with the spot trading system, the AGC setting permission will automatically switch from spot trading to centralized control (or power plant).

[0031] When switching from spot trading mode to centralized control mode, to ensure a smooth load transition during the switchover, the system will ask whether to maintain the spot trading value. If maintenance is selected, the value from the spot trading period will be copied. Execution data in spot trading mode will be displayed on the monitoring system with specific execution time and power values. In spot trading mode, the program calculates the load value per minute for the specified time period (one value is executed in 15-minute intervals, and each value must meet requirements such as ramp rate; therefore, the target value is allocated to each minute for execution) based on the spot clearing load and time point transmitted by the data acquisition and publishing system, according to the power plant's grid-connected output dispatching instructions. The load is then automatically adjusted according to the ramp rate of the power generation unit. In the joint commissioning unit, interval flow boundary conditions are set (interval flow setting is an existing AGC function used to allocate the load of two power plants; the total load of the two power plants is the load value of this output unit, and the two power plants use one transmission line), and this is used as the basis for matching the output values ​​of different power plants in the joint commissioning unit. The formula for calculating the downstream flow rate is: upstream output * flow rate per 1MW of output + ecological flow rate. The flow rate of each station is calculated by back-calculating the flow rate of the upstream and downstream water levels and then the interval flow rate is set.

[0032] When executing spot orders, if the clearing load exceeds the unit's technical capacity and the unit is not yet running, a reminder will be sent to start the unit in advance for standby.

[0033] Step S206: During the load adjustment process, the lead time for load adjustment is set based on the dynamic performance of the unit to reduce the power deviation in the power generation plan assessment.

[0034] The formula for calculating the lead time for load adjustment is:

[0035] in, This is the inherent time from the issuance of the load command to the start of the governor's operation. This refers to the time it takes for the unit to climb or landslide at the current head or load level.

[0036] Specifically, the daily power generation plan assessment and control optimization technology: The target value for assessing the daily power generation plan in the "two detailed rules" is not the load value at that moment, but the power generation one minute before that moment. Due to the influence of unit adjustment performance, ramp-up rates under different operating conditions, and varying equipment signal reception times, power generation assessment is unavoidable during load adjustment. A strategy for advance load adjustment is added to the spot trading mode of the AGC / AVC control unit program, determining the program's load adjustment advance time T. Assuming the unit governor operates uniformly, the power deviation is calculated based on on-time start-up. Figure 3 As shown, this deviation exceeds the allowable range for power deviation. Adjusting the load start-up time reduces the integral area of ​​the power deviation (the sum of the areas of the triangle and the rectangle). The adjusted load adjustment curve is shown below. Figure 4 As shown, the adjusted load curve reduces the power deviation (rectangular area) caused by the transmission time of the monitoring system, and greatly reduces the power deviation caused by the speed controller's action time (the area of ​​the triangle becomes 1 / 4 of the previous area).

[0037] The time from when the unit's LCU issues a command to when the governor begins to operate is set as the inherent duration. The time taken for the unit to climb (landslide) under different water heads or load levels was measured. and For different power generation units, the load adjustment advance time T1 is dynamically set. + / 2, T2= + / 2, reduce the amount of electricity to be assessed during load adjustments.

[0038] In one embodiment, if the cleared load exceeds the unit's maximum technical output or falls below its minimum technical output, and the unit is not started, a start-up standby reminder message is generated. In the joint commissioning unit, the output values ​​of different power stations are allocated according to the boundary conditions of the interval flow. The downstream flow is calculated based on the upstream output, the flow per 1MW of output, and the ecological flow.

[0039] In one embodiment, if no new clearing data is received within a preset time window, it is determined to be a clearing anomaly, and the previous valid clearing value is maintained as the basis for load setting. The monitoring system triggers a communication interruption alarm and automatically switches the AGC setting permissions to centralized control mode.

[0040] In one embodiment, the clearing data of the electricity spot platform is transmitted to the computer monitoring system. The data is converted from time-series power values ​​to minute-by-minute power values. The system compares the set value of the previous minute to see if it has changed and then sends an instruction to the AGC / AVC control unit. The system executes the power plant's grid-connected output dispatch instructions according to the rules, which include ramp rate limits, minimum technical output constraints, maximum technical output constraints, and adjustment dead zone settings, to adjust the load of the power plant's output units.

[0041] Specifically, the equipment consists of: 1. Power generation spot trading platform system; 2. Centralized control SCALA system; 3. Power plant computer monitoring system; 4. Power plant AGC / AVC control unit; 5. Data acquisition and publishing system; 6. Security Zone I communication gateway.

[0042] Data source: Real-time clearing results of the electricity spot market.

[0043] Data transmission: The real-time clearing results of the spot platform are transmitted to the data collection and publishing system, and the data is then integrated and sent to the computer monitoring system for execution.

[0044] Wired transmission uses interface communication software to directly send the collected spot transaction data to the data collection and publishing system.

[0045] Image transmission involves using a camera to read and recognize images of data from the spot trading platform and then sending them to the data acquisition and publishing system. The images used are more reliable graphic information (such as QR codes).

[0046] Wireless transmission: Using wireless transmission devices (such as Bluetooth and WiFi) to send data from the spot trading platform to the data collection and publishing system.

[0047] The data will have a header to distinguish the information content. The data information includes the sent data, the sending time, etc. After data decryption and verification, the difference between the data sending time and the receiving time must not exceed 15 minutes. Multiple data transmissions will be compared to ensure that the digital data information is the same and the sending time interval is the set value.

[0048] The data acquisition and distribution system integrates the electricity spot market clearing value into a computer-monitorable executable data signal. It calculates and allocates the total load to be generated by each power station. It communicates with the Zone I communication gateway of the computer monitoring system using one of the three methods mentioned above, sending the allocated load and heartbeat signals for each power station to the Zone I communication gateway. A communication interruption alarm function is also designed. The Zone I communication gateway receives the total load and heartbeat signals for each power station from the data acquisition and distribution system. Based on the heartbeat signals from the data acquisition and distribution system, it determines the communication status with the system and uses this to determine whether the AGC setting can be switched to "spot trading" mode. The Zone I communication gateway communicates with the power station AGC / AVC control unit using the IEC60870-5-104 communication protocol, forwarding the received total load setting for the power station's spot trading to the AGC / AVC control unit. The Zone I communication gateway has communication capabilities with the centralized control and power plant central control room's SCALA system. It sends received signals such as the total load setting value of the power plant's spot trading generation and communication status to the computer control system for display, enabling operators to monitor and perform access control on the spot trading system's functions at their workstations.

[0049] This embodiment provides an automatic load adjustment method adapted to electricity spot trading, establishing a complete automated closed loop from "market clearing" to "unit execution," replacing all traditional manual intervention steps, and achieving full-process, minute-level precise tracking automation; through forward-looking dynamic adjustment, it directly quantifies and reduces assessment losses, ensuring the safety and stability of the load adjustment process, and possesses comprehensive anomaly handling logic to ensure that power plant control can be smoothly and automatically switched when market data is abnormal, ensuring power supply continuity; it also incorporates multiple safety constraints and boundary conditions to prevent equipment damage and operational instability.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An automatic load adjustment system adapted to electricity spot trading, characterized in that, include: The power generation spot trading platform system is used to provide real-time clearing results and pre-clearing results for multiple future time points; The data acquisition and publishing system is connected to the power generation spot trading platform system and is used to receive and integrate the real-time clearing results and the pre-clearing results, and convert them into power values ​​per minute in a time series. The centralized control center computer monitoring system is connected to the data acquisition and publishing system, and generates load setpoints from the power values ​​based on the power plant's grid-connected output dispatching instruction execution rules. The power plant AGC / AVC control unit is communicatively connected to the central control center computer monitoring system and is used to automatically adjust the output of the corresponding power generation unit according to the load set value. The Security Zone I communication gateway is deployed within Security Zone I of the power monitoring system to enable data communication with the data acquisition and publishing system in Security Zone II.

2. The automatic load adjustment system adapted to electricity spot trading according to claim 1, characterized in that, The data acquisition and publishing system also includes: The received clearing data is decrypted and verified to determine whether the time difference between data transmission and reception is within the allowable threshold. The electricity spot clearing value is allocated to the total load of each power station according to preset rules, and a heartbeat signal is generated; The allocated load data and heartbeat signal are sent to the communication gateway in Security Zone I.

3. The automatic load adjustment system adapted to electricity spot trading according to claim 1, characterized in that, The communication gateway in Security Zone I determines the communication status with the data acquisition and publishing system based on the received heartbeat signal. Based on the communication status, the AGC setting permissions can be switched between spot trading mode and centralized control mode. The communication protocol is used to communicate with the power plant's AGC / AVC control unit.

4. The automatic load adjustment system adapted to electricity spot trading according to claim 1, characterized in that, Also includes: The reverse network security isolation device is deployed between Security Zone II and Security Zone I. It is configured with an access control list and only grants the minimum permissions required for data transmission, enabling one-way data transmission from Security Zone II to Security Zone I.

5. The automatic load adjustment system adapted to electricity spot trading according to claim 3, characterized in that, The spot trading mode in the power plant AGC / AVC control unit has a priority setting, which is lower than other control modes. When an interruption in communication with the spot trading system or data abnormality is detected, the AGC setting permission is automatically switched to the centralized control mode or the power plant local mode.

6. The automatic load adjustment system adapted to electricity spot trading according to claim 5, characterized in that, The automatic switching of AGC setting permissions to centralized control mode or power plant local mode includes: when switching from spot trading mode to centralized control mode, the system provides an option to maintain the spot trading load value before the switch, and displays the load value and the switching operation interface on the monitoring system operator station.

7. A method for automatic load adjustment adapted to electricity spot trading, characterized in that, include: Real-time clearing data is obtained from the electricity spot trading platform, and the clearing data includes load values ​​at a fixed future time point; The data collection and distribution system receives and integrates the clearing data, converting it into a power value executed per minute; The integrated data is transmitted to the central control center's computer monitoring system via security protection facilities. Based on the clearing data, preset ramp rate limits, minimum technical output constraints, maximum technical output constraints, and adjustment dead zone settings, a load setpoint per minute is generated. The power generation unit output is automatically adjusted according to the load setpoint. During load adjustment, the lead time for load adjustment is set based on the dynamic performance of the unit to reduce the deviation of the power generation plan assessment.

8. The automatic load adjustment method for electricity spot trading according to claim 7, characterized in that, The formula for calculating the lead time of the load adjustment is as follows: in, This is the inherent time from the issuance of the load command to the start of the governor's operation. This refers to the time it takes for the unit to climb or landslide at the current head or load level.

9. The automatic load adjustment method for electricity spot trading according to claim 7, characterized in that, Also includes: If the load exceeds the unit's maximum technical output or falls below its minimum technical output, and the unit is not started, a standby reminder message will be generated. In the joint commissioning unit, the output values ​​of different power stations are allocated according to the boundary conditions of the interval flow. The downstream flow is calculated based on the upstream output, the flow per 1MW of output, and the ecological flow.

10. The automatic load adjustment method for electricity spot trading according to claim 7, characterized in that, Also includes: If no new clearing data is received within the preset time window, it is determined to be a clearing anomaly, and the previous valid clearing value is maintained as the basis for load setting; The monitoring system triggers a communication interruption alarm and automatically switches the AGC setting permissions to centralized control mode.

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