WO2023010685A1 - Method and system for online dynamic optimization and adjustment of control object of each round of under frequency load shedding - Google Patents

Method and system for online dynamic optimization and adjustment of control object of each round of under frequency load shedding Download PDF

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Publication number
WO2023010685A1
WO2023010685A1 PCT/CN2021/123952 CN2021123952W WO2023010685A1 WO 2023010685 A1 WO2023010685 A1 WO 2023010685A1 CN 2021123952 W CN2021123952 W CN 2021123952W WO 2023010685 A1 WO2023010685 A1 WO 2023010685A1
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round
load
total
controllable
rounds
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PCT/CN2021/123952
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French (fr)
Chinese (zh)
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李碧君
郑亮
赖业宁
薛峰
刘天翼
颜云松
李明应
李祝昆
崔强
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国电南瑞科技股份有限公司
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Publication of WO2023010685A1 publication Critical patent/WO2023010685A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Definitions

  • the invention relates to a method and system for dynamically optimizing and adjusting the control objects of each round of low-frequency load shedding on-line, and belongs to the technical field of power systems.
  • the power system often has to bear the impact of disturbances such as sudden loss of components and short-circuit faults.
  • the ability of the power system to withstand disturbances is divided into three levels of safety and stability standards: the first level standard is to maintain stable operation and normal power supply of the power grid; the second level standard is to maintain stable operation, but allow the loss of part of the load ;
  • the third standard is that when the system cannot maintain stable operation, it must try to prevent the system from collapsing and reduce the load loss.
  • the three-level safety and stability standard there are three lines of defense for power system safety and stability control.
  • the third line of defense is composed of out-of-step decoupling, frequency and voltage emergency control devices.
  • control measures such as decoupling, load shedding, and machine shutdown are adopted to prevent the system from collapse.
  • the third line of defense usually does not target specific power grid operation modes, component failures and forms, and adopts a decentralized and local layout mode.
  • a large amount of power loss may occur suddenly during the operation of the power system. The reason may be that the large-capacity unit trips and the large-capacity feed-in DC is blocked, resulting in a sharp drop in frequency.
  • a low-frequency load shedding device is installed in the substation.
  • the low-frequency load shedding device is a safety and stability control equipment belonging to the third line of defense. After detecting that the local frequency has dropped to a certain extent and for a certain period of time, it will automatically cut off part of the load, so that the system frequency can be maintained or restored to the allowable range.
  • the low frequency load shedding control is divided into basic wheel and special wheel.
  • the low-frequency load shedding device can realize the action control requirements of multiple basic wheels and multiple special wheels.
  • the device has several groups (such as 32 groups) of tripping outlets, which can be flexibly set by software to the corresponding round.
  • power grid operation planning engineers determine the action conditions and total control requirements of each round of low-frequency load shedding control of the power grid through offline analysis and calculation according to the safety and stability characteristics of the power grid.
  • the total control amount of each round is mostly given in the form of the percentage of each round of control load to the total network load, and is generally updated regularly (for example, once a year).
  • control objects outgoing lines and off-grid main transformer
  • the control objects are set in combination with the installed low-frequency load shedding device substation outgoing line and off-grid main transformer load and its characteristics and the corresponding action rounds; when the fixed value changes, according to the needs, select some tripping outlets of the low-frequency load shedding devices of several substations to adjust their control objects or corresponding action rounds.
  • Low-frequency load shedding control deals with global frequency problems, and its appropriate control amount is closely related to the total active power of the grid before a large power shortage occurs; the load in the grid has significant time-varying characteristics, based on the fixed control object of low-frequency load shedding There may be a large deviation between the actual controllable total load and the expected controllable total load under low-frequency load shedding. It can be seen that due to the interactive influence of the above two factors, based on the fixed mode of low-frequency load shedding control objects, there is a hidden danger of insufficient or over-control of the total amount of low-frequency load shedding control when a large power shortage event occurs in the power grid.
  • the present invention provides a method and system for online dynamic optimization and adjustment of each round of low-frequency load shedding control objects, which solves the problem of the fixed mode of low-frequency load shedding control objects, and the total amount of low-frequency load shedding control when a large power shortage event occurs in the power grid Problems with under- or over-control hazards.
  • the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding includes:
  • Prc i is the actual controllable total load of round i
  • Pr i,k,l is the real-time active power of the actual controllable object l of low-frequency load shedding device k in round i
  • KT is the low-frequency load shedding device
  • the total number, LT i,k is the actual total number of controllable objects of the low-frequency load shedding device k round i low-frequency load shedding.
  • the actual total controllable load of the round is within the corresponding upper limit and lower limit, then the actual total controllable load of this round is suitable for the requirements of the current power grid operation mode; otherwise, the round The actual total controllable load does not meet the requirements of the current power grid operation mode.
  • Plo i is the lower limit of the total load to be controlled in round i
  • Pup i is the upper limit of the total load to be controlled in round i
  • PTO is the real-time total active load of the power grid
  • PC i is the total controllable load in round i.
  • Quantity setting value Perlo i is the lower limit coefficient
  • Perup i is the upper limit coefficient.
  • Unsuitable rounds include insufficient rounds and excessive rounds. Calculate the actual total controllable load that is not suitable for the rounds and need to adjust the controllable load. The specific process is:
  • the round is an excessive round, and the controllable load that needs to be reduced is the total actual controllable load minus the upper limit.
  • the default rules are:
  • Rule 3 If there are both insufficient rounds and excessive rounds, first adjust the controllable load between the insufficient rounds and the excessive rounds; if only the excess rounds remain after adjustment, adjust according to Rule 2; If there are only insufficient rounds left after the adjustment, it will be adjusted according to Rule 1.
  • Adjustment of controllable load within a round includes:
  • the number of adjusted low-frequency load shedding devices is the least and the number of control objects is the least, according to the amount of controllable load that needs to be reduced, block the exit control objects of the low-frequency load shedding device in the excessive round;
  • Controllable load adjustments between excess rounds and insufficient rounds include:
  • the adjustment of the controllable load between rounds that can reduce the controllable load and insufficient rounds includes:
  • the total amount of controllable load that can be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle that the number of low-frequency load shedding devices to be adjusted is the least and the number of control objects is the least, the number of control objects that can be reduced and controllable load is changed to Insufficient rounds to control the object.
  • Total statistics module statistics of the actual controllable total load of each round of low-frequency load shedding
  • Evaluation module calculate the upper limit and lower limit of the total load to be controlled in each round, conduct adaptability assessment on the actual controllable total load in each round, and obtain unsuitable rounds;
  • Load calculation module calculate the adjustable controllable load that is not suitable for the round
  • Strategy formulation module According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
  • Adjustment module adjust the control objects according to the strategy of adjusting the control objects in each round.
  • a computer-readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform rounds of online dynamic optimization adjustment under-frequency load shedding A method for secondary control objects.
  • a computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more Executed by multiple processors, the one or more programs include instructions for executing the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding.
  • the present invention evaluates the adaptability of the total actual controllable load of each round, and formulates and adjusts each round based on the fact that the actual total controllable load does not adapt to the round and needs to adjust the controllable load
  • the strategy of the control object realizes the optimization and adjustment of the control object, thereby improving the adaptability and precision level of the low-frequency load shedding control strategy, and solving the problem of insufficient or over-control of the total amount of low-frequency load shedding control based on the fixed mode of the low-frequency load shedding control object hidden dangers, and provide better technical support for the third line of defense of power grid security to fully play its due role.
  • Fig. 1 is the flowchart of the method of the present invention.
  • the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding includes the following steps:
  • Step 1 counting the actual controllable total load of each round of low-frequency load shedding
  • Step 2 calculate the upper limit and lower limit of the total amount of load to be controlled in each round, and evaluate the adaptability of the actual total controllable load in each round to obtain the unsuitable rounds;
  • Step 3 calculate the amount of controllable load that needs to be adjusted for the unsuitable rounds; among them, the unsuitable rounds include the rounds with insufficient total actual controllable load and the excessive rounds;
  • Step 4 According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
  • Step 5 adjust the control object according to the strategy for adjusting the control object in each round.
  • the above method evaluates the adaptability of the actual total controllable load of each round, and formulates strategies for adjusting the control objects of each round based on the fact that the actual total controllable load does not adapt to the round.
  • the optimization and adjustment of the low-frequency load shedding control strategy improves the adaptability and accuracy of the low-frequency load shedding control strategy, and solves the hidden dangers of insufficient or over-control of the low-frequency load shedding control in the mode based on the fixed low-frequency load shedding control object.
  • the defense line should fully play its due role and provide better technical support.
  • the basic information includes the configuration of the low-frequency load shedding device, the real-time operation information of the low-frequency load shedding device, the information of the control object of the low-frequency load shedding device, and the real-time operation of the control object of the low-frequency load shedding device.
  • the configuration of the low-frequency load shedding device includes the information of the load shedding rounds and the number of trip outlet groups configured by the low-frequency load shedding device, and the control object information of the low-frequency load shedding device includes the control object information such as the circuit and the main transformer controlled by the trip outlet of each round;
  • Real-time operation information of the low-frequency load shedding device including the actual status of signals such as "running”, “device locking”, “PT disconnection”, “communication abnormality”, “general function pressure plate” and “low frequency function pressure plate” of the device, these information It is sent to the dispatching master station in real time by the low-frequency load shedding device.
  • the real-time operation information of the control object of the low-frequency load shedding device includes the status of the control object (line or main transformer) outlet pressure plate switching on and off and real-time active power.
  • the information is sent to the dispatching master station in real time by the low frequency load shedding device.
  • Prc i is the actual controllable total load of round i
  • Pr i,k,l is the real-time active power of the actual controllable object l of low-frequency load shedding device k in round i
  • KT is the low-frequency load shedding
  • the total number of loading devices, LT i,k is the actual total number of controllable objects of the low-frequency load shedding device k round i low-frequency load shedding.
  • Actual controllable object of low-frequency load shedding when the action condition of low-frequency load shedding is met, the control object that the low-frequency load shedding device can automatically trip at the outlet is related to the actual operating state of the low-frequency load shedding device and the actual operating state of the outlet pressure plate of the control object.
  • the low-frequency load shedding device If the low-frequency load shedding device is "operating" normally, and the "general function pressure plate” and “low-frequency function pressure plate” are in the input state, then the device has the low-frequency load shedding function; Load the actual controllable objects.
  • Plo i is the lower limit of the total load to be controlled in round i
  • Pup i is the upper limit of the total load to be controlled in round i
  • PTO is the real-time total active load of the power grid
  • PC i is the total controllable load in round i.
  • Quantity setting value offline setting by the operation planning engineer, expressed as a percentage of the grid load
  • Perlo i is the lower limit coefficient (typical value is 0.985)
  • Perup i is the upper limit coefficient (typical value is 1.015);
  • the setting value of the total controllable load of each round of low-frequency load shedding of the power grid is calculated by the power grid operation planning engineer based on the offline simulation analysis of the power grid. It is usually expressed as a percentage of the total controllable load of each round to the grid load. update once;
  • the preset rules are as follows:
  • Rule 3 If there are both insufficient rounds and excessive rounds, first adjust the controllable load between the excess rounds and insufficient rounds; if only excess rounds remain after adjustment, adjust according to rule 2; If there are only insufficient rounds left after the adjustment, it will be adjusted according to Rule 1.
  • controllable load adjustments between the above rounds there are two kinds of controllable load adjustments between the above rounds, one is the controllable load adjustment between excessive rounds and insufficient rounds, and the other is the controllable load between rounds and insufficient rounds that can reduce the controllable load Quantity adjustment;
  • the total amount of controllable load that can be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle that the number of low-frequency load shedding devices to be adjusted is the least and the number of control objects is the least, the number of control objects that can be reduced and controllable load is changed to Insufficient rounds to control the object.
  • the total amount of control of the insufficient round i1 is Prc i +PAj i1,j
  • the additional control amount is PInc i1 -PAj i1,j
  • the total amount of control of the excessive round j is Prc j -PAj i1, j
  • the control amount to be reduced is PDec j -PAj i1,j
  • PInc i -PAj i1,j is greater than 0, it means that the control amount needs to be increased for the round i1.
  • All the control objects of the first K j,i1 -1 low-frequency load shedding devices in the excess round j are all changed to the control objects of the insufficient round i1, and for the control objects of the K j,i1th low-frequency load shedding device, the excess round
  • the number of control objects whose time j is changed to be less than the number of control objects of the round i1 is the least, according to the order of Pr j, k, l from large to small, determine the change of the control objects of the round, so that Greater than or equal to the total amount of load shedding control that needs to be changed to less than round i1.
  • the adjustment between rounds and insufficient rounds that can reduce the controllable load is similar to the adjustment between the above-mentioned excessive rounds and insufficient rounds.
  • the adjustment of the internal controllable load of the round is: based on the principle of the least number of adjusted low-frequency load shedding devices and the least number of control objects, according to the required reduction of the controllable load, block the exit control object of the low-frequency load shedding device in the excessive round.
  • the control objects of each round adjust the control objects. Specifically, the information of the control objects that need to be adjusted in the round of the export action of the low-frequency load shedding will be sent to the relevant substation low-frequency load shedding device, and the substation low-frequency load shedding device will carry out the round of the export action. Update accordingly.
  • Communication standard transmission protocols such as DL/T 476, DL/T 634.5101, and DL/T 634.5104 are adopted between the dispatching master station and the low-frequency load shedding device , to realize the data transmission and interaction between the two, the dispatching master station will adjust the strategy ternary table, and send it to the low-frequency load shedding device, and the low-frequency load shedding device will adjust the control object after receiving the adjustment strategy ternary table.
  • the above method fully considers the characteristics that the appropriate control amount of low-frequency load shedding is closely related to the total active power of the whole network before the occurrence of a large power shortage, and conducts an adaptability assessment of the actual controllable total load of each round. If the total amount of control load does not adapt to the rounds, it is necessary to adjust the controllable load, formulate strategies for adjusting the control objects of each round, and realize the optimal adjustment of the control objects, thereby improving the adaptability and accuracy of the low-frequency load shedding control strategy, and solving the problem.
  • the model based on fixed low-frequency load shedding control objects has insufficient or over-control hidden dangers in the total amount of low-frequency load shedding control, and provides better technical support for the third line of defense of power grid security to fully play its due role.
  • the software system corresponding to the above method that is, the system for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding, includes:
  • Total statistics module statistics of the actual controllable total load of each round of low-frequency load shedding
  • Evaluation module calculate the upper limit and lower limit of the total load to be controlled in each round, conduct adaptability assessment on the actual controllable total load in each round, and obtain unsuitable rounds;
  • Load calculation module calculate the adjustable controllable load that is not suitable for the round
  • Strategy formulation module According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
  • Adjustment module adjust the control objects according to the strategy of adjusting the control objects in each round.
  • a computer-readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform rounds of online dynamic optimization adjustment under-frequency load shedding A method for secondary control objects.
  • a computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more Executed by multiple processors, the one or more programs include instructions for executing the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

Disclosed in the present invention are a method and system for online dynamic optimization and adjustment of a control object of each round of under frequency load shedding. According to the present invention, adaptability evaluation is performed on the actual controllable load total amount of each round, and a policy for adjusting a control object of each round is formulated on the basis that the actual controllable load total amount does not adapt to a controllable load amount needing to be adjusted of a round, achieving the optimization and adjustment of the control object. Therefore, the self-adaptability and accuracy level of an under frequency load shedding control policy are improved, the hidden danger that the control amount of under frequency load shedding may be insufficient or excessive in a mode that a control object of under frequency load shedding is fixed can be solved, and better technical support is provided for a third line of defense of power grid safety to fully play its due role.

Description

在线动态优化调整低频减载各轮次控制对象的方法及系统Method and system for online dynamic optimization and adjustment of control objects in each round of low-frequency load shedding 技术领域technical field
本发明涉及一种在线动态优化调整低频减载各轮次控制对象的方法及系统，属于电力系统技术领域。The invention relates to a method and system for dynamically optimizing and adjusting the control objects of each round of low-frequency load shedding on-line, and belongs to the technical field of power systems.
背景技术Background technique
电力系统在运行中时常要承受元件突然失去和短路故障等扰动的冲击。为了保证电力系统安全稳定运行，电力系统承受扰动的能力分为三级安全稳定标准：第一级标准是保持稳定运行和电网的正常供电；第二级标准是保持稳定运行，但允许损失部分负荷；第三级标准是当系统不能保持稳定运行时，必须尽量防止系统崩溃并减少负荷损失。对应三级安全稳定标准，电力系统安全稳定控制有三道防线。第三道防线由失步解列、频率及电压紧急控制装置构成，当电力系统发生失步振荡、频率异常、电压异常等事故时，采取解列、切负荷、切机等控制措施，防止系统崩溃。第三道防线通常不针对特定的电网运行方式、元件故障及形态，采取分散就地布置的模式。During operation, the power system often has to bear the impact of disturbances such as sudden loss of components and short-circuit faults. In order to ensure the safe and stable operation of the power system, the ability of the power system to withstand disturbances is divided into three levels of safety and stability standards: the first level standard is to maintain stable operation and normal power supply of the power grid; the second level standard is to maintain stable operation, but allow the loss of part of the load ; The third standard is that when the system cannot maintain stable operation, it must try to prevent the system from collapsing and reduce the load loss. Corresponding to the three-level safety and stability standard, there are three lines of defense for power system safety and stability control. The third line of defense is composed of out-of-step decoupling, frequency and voltage emergency control devices. When accidents such as out-of-step oscillation, abnormal frequency, and abnormal voltage occur in the power system, control measures such as decoupling, load shedding, and machine shutdown are adopted to prevent the system from collapse. The third line of defense usually does not target specific power grid operation modes, component failures and forms, and adopts a decentralized and local layout mode.
电力系统运行中可能突然出现大额功率缺失的事件，其原因可能是大容量机组跳闸、大容量馈入直流闭锁，导致频率急剧跌落。为了避免电网低频异常事故的发生、继而防止系统崩溃，在变电站配置了低频减载装置。低频减载装置是属于第三道防线的安全稳定控制装备，在检测到就地频率跌落到一定程度及时间后，自动切除部分负荷，从而使系统频率能够保持或恢复到允许的范围内。A large amount of power loss may occur suddenly during the operation of the power system. The reason may be that the large-capacity unit trips and the large-capacity feed-in DC is blocked, resulting in a sharp drop in frequency. In order to avoid the occurrence of low-frequency abnormal accidents in the power grid, and then prevent the system from collapsing, a low-frequency load shedding device is installed in the substation. The low-frequency load shedding device is a safety and stability control equipment belonging to the third line of defense. After detecting that the local frequency has dropped to a certain extent and for a certain period of time, it will automatically cut off part of the load, so that the system frequency can be maintained or restored to the allowable range.
通常，低频减载控制分为基本轮和特殊轮。按照动作条件(低频频率及持续时间)，低频减载装置可实现多个基本轮和多个特殊轮的动作控制要求，装 置有若干组(例如32组)跳闸出口，可通过软件灵活地设定到相应的轮次。目前，电网运行规划工程师根据电网安全稳定特性，通过离线分析计算，确定电网低频减载控制每个轮次的动作条件及其控制总量要求，工程界称之为低频减载定值，各轮次的控制总量大多以每轮控制负荷占全网负荷的百分比的形式给出，一般是定期更新(例如一年更新一次)。以满足各轮次控制总量要求为原则，结合已安装低频减载装置变电站出线和下网主变的负荷及其特性情况，设定各组跳闸出口的控制对象(出线和下网主变)和对应的动作轮次；在定值有变化时，根据需要，选取若干变电站低频减载装置的部分跳闸出口调整其控制对象或对应的动作轮次。Usually, the low frequency load shedding control is divided into basic wheel and special wheel. According to the operating conditions (low-frequency frequency and duration), the low-frequency load shedding device can realize the action control requirements of multiple basic wheels and multiple special wheels. The device has several groups (such as 32 groups) of tripping outlets, which can be flexibly set by software to the corresponding round. At present, power grid operation planning engineers determine the action conditions and total control requirements of each round of low-frequency load shedding control of the power grid through offline analysis and calculation according to the safety and stability characteristics of the power grid. The total control amount of each round is mostly given in the form of the percentage of each round of control load to the total network load, and is generally updated regularly (for example, once a year). Based on the principle of meeting the total control requirements of each round, the control objects (outgoing lines and off-grid main transformer) of each group of trip outlets are set in combination with the installed low-frequency load shedding device substation outgoing line and off-grid main transformer load and its characteristics and the corresponding action rounds; when the fixed value changes, according to the needs, select some tripping outlets of the low-frequency load shedding devices of several substations to adjust their control objects or corresponding action rounds.
低频减载控制应对全局性的频率问题，其合适的控制总量与大功率缺额发生前的电网总有功功率密切相关；电网中的负荷具有显著的时变特性，基于低频减载控制对象固定的模式，低频减载实际可控制负荷总量与预期控制负荷总量可能会存在较大偏差。可见，受上述两方面因素的交互影响，目前基于低频减载控制对象固定的模式，在电网发生大功率缺额事件时存在低频减载控制总量不足或过控的隐患。Low-frequency load shedding control deals with global frequency problems, and its appropriate control amount is closely related to the total active power of the grid before a large power shortage occurs; the load in the grid has significant time-varying characteristics, based on the fixed control object of low-frequency load shedding There may be a large deviation between the actual controllable total load and the expected controllable total load under low-frequency load shedding. It can be seen that due to the interactive influence of the above two factors, based on the fixed mode of low-frequency load shedding control objects, there is a hidden danger of insufficient or over-control of the total amount of low-frequency load shedding control when a large power shortage event occurs in the power grid.
发明内容Contents of the invention
本发明提供了一种在线动态优化调整低频减载各轮次控制对象的方法及系统，解决了基于低频减载控制对象固定的模式，在电网发生大功率缺额事件时存在低频减载控制总量不足或过控隐患的问题。The present invention provides a method and system for online dynamic optimization and adjustment of each round of low-frequency load shedding control objects, which solves the problem of the fixed mode of low-frequency load shedding control objects, and the total amount of low-frequency load shedding control when a large power shortage event occurs in the power grid Problems with under- or over-control hazards.
为了解决上述技术问题，本发明所采用的技术方案是：In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
在线动态优化调整低频减载各轮次控制对象的方法，包括：The method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding includes:
统计低频减载每个轮次的实际可控制负荷总量；Statistics of the actual controllable total load of each round of low-frequency load shedding;
计算每个轮次需控制负荷总量的上限值和下限值，对每个轮次的实际可控制负荷总量进行适应性评估，获取不适应轮次；Calculate the upper limit and lower limit of the total load that needs to be controlled in each round, and conduct an adaptability assessment of the actual total controllable load in each round to obtain unsuitable rounds;
计算不适应轮次的需调整可控制负荷量；Calculate the adjustable controllable load that is not suitable for the round;
根据不适应轮次的需调整可控制负荷量和预设规则，制定调整各轮次控制对象的策略；According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
根据调整各轮次控制对象的策略，进行控制对象调整。Adjust the control objects according to the strategy of adjusting the control objects in each round.
统计实际可控制负荷总量采用的公式为：The formula used to count the actual total controllable load is:
Figure PCTCN2021123952-appb-000001
Figure PCTCN2021123952-appb-000001
其中，Prc i为轮次i的实际可控制负荷总量，Pr i,k,l为低频减载装置k轮次i低频减载实际可控制对象l的实时有功功率，KT为低频减载装置总数，LT i,k为低频减载装置k轮次i低频减载实际可控制对象总数。 Among them, Prc i is the actual controllable total load of round i, Pr i,k,l is the real-time active power of the actual controllable object l of low-frequency load shedding device k in round i, and KT is the low-frequency load shedding device The total number, LT i,k is the actual total number of controllable objects of the low-frequency load shedding device k round i low-frequency load shedding.
计算各轮次需控制负荷总量的上限值和下限值，对各轮次的实际可控制负荷总量进行适应性评估，具体过程为：Calculate the upper limit and lower limit of the total load that needs to be controlled in each round, and conduct an adaptability assessment of the actual controllable total load in each round. The specific process is as follows:
计算每个轮次需控制负荷总量的上限值和下限值；Calculate the upper limit and lower limit of the total load to be controlled in each round;
遍历所有轮次，若轮次的实际可控制负荷总量位于相应的上限值和下限值范围内，则该轮次的实际可控制负荷总量适应当前电网运行方式要求；否则该轮次的实际可控制负荷总量不适应当前电网运行方式要求。Go through all the rounds, if the actual total controllable load of the round is within the corresponding upper limit and lower limit, then the actual total controllable load of this round is suitable for the requirements of the current power grid operation mode; otherwise, the round The actual total controllable load does not meet the requirements of the current power grid operation mode.
计算各轮次需控制负荷总量的上限值和下限值，具体公式为：Calculate the upper limit and lower limit of the total load to be controlled in each round, the specific formula is:
Plo i＝PTO*PC i*Perlo i Plo i =PTO*PC i *Perlo i
Pup i＝PTO*PC i*Perup i Pup i =PTO*PC i *Perup i
其中，Plo i为轮次i需控制负荷总量下限值，Pup i为轮次i需控制负荷总 量上限值，PTO为电网实时总有功负荷，PC i为轮次i可控制负荷总量整定值，Perlo i为下限系数，Perup i为上限系数。 Among them, Plo i is the lower limit of the total load to be controlled in round i, Pup i is the upper limit of the total load to be controlled in round i, PTO is the real-time total active load of the power grid, and PC i is the total controllable load in round i. Quantity setting value, Perlo i is the lower limit coefficient, Perup i is the upper limit coefficient.
不适应轮次包括不足轮次和过量轮次，计算实际可控制负荷总量不适应轮次的需调整可控制负荷量，具体过程为：Unsuitable rounds include insufficient rounds and excessive rounds. Calculate the actual total controllable load that is not suitable for the rounds and need to adjust the controllable load. The specific process is:
若实际可控制负荷总量小于对应的下限值，则该轮次为不足轮次，需要增加的可控制负荷量为下限值减去实际可控制负荷总量；If the total amount of actual controllable load is less than the corresponding lower limit, the round is insufficient, and the amount of controllable load that needs to be increased is the lower limit minus the total amount of actual controllable load;
若实际可控制负荷总量大于对应的上限值，则该轮次为过量轮次，需要减少的可控制负荷量为实际可控制负荷总量减去上限值。If the total actual controllable load is greater than the corresponding upper limit, the round is an excessive round, and the controllable load that needs to be reduced is the total actual controllable load minus the upper limit.
预设规则为：The default rules are:
规则1：若仅有不足轮次，与可减少可控制负荷量轮次进行轮次间可控负荷量调整；其中，若实际可控制负荷总量大于对应的下限值、并不大于对应的上限值，则该轮次为可减少可控制负荷量轮次；Rule 1: If there are only insufficient rounds, adjust the controllable load between rounds with the number of rounds that can reduce the controllable load; among them, if the actual total controllable load is greater than the corresponding lower limit and not greater than the corresponding upper limit value, then this round is a round that can reduce the controllable load;
规则2：若仅有过量轮次，进行轮次内部可控负荷量调整；Rule 2: If there are only excessive rounds, adjust the controllable load within the round;
规则3：若既存在不足轮次也存在过量轮次，先将不足轮次与过量轮次进行轮次间可控负荷量调整；若调整后仅剩余过量轮次，则根据规则2进行调整；若调整后仅剩余不足轮次，则根据规则1进行调整。Rule 3: If there are both insufficient rounds and excessive rounds, first adjust the controllable load between the insufficient rounds and the excessive rounds; if only the excess rounds remain after adjustment, adjust according to Rule 2; If there are only insufficient rounds left after the adjustment, it will be adjusted according to Rule 1.
轮次内部可控负荷量调整包括：Adjustment of controllable load within a round includes:
以调整的低频减载装置数目最少、控制对象数目最少为原则，根据需要减少的可控制负荷量，闭锁该过量轮次中低频减载装置出口控制对象；Based on the principle that the number of adjusted low-frequency load shedding devices is the least and the number of control objects is the least, according to the amount of controllable load that needs to be reduced, block the exit control objects of the low-frequency load shedding device in the excessive round;
过量轮次与不足轮次间可控负荷量调整包括：Controllable load adjustments between excess rounds and insufficient rounds include:
若需要减少的可控制负荷总量不大于需要增加的可控制负荷总量，将过量轮次控制对象变更为不足轮次控制对象；If the total controllable load that needs to be reduced is not greater than the total controllable load that needs to be increased, change the control object of excess rounds to the control object of insufficient rounds;
若需要减少的可控制负荷总量大于需要增加的可控制负荷总量，以调整的低频减载装置数目最少、控制对象数目最少为原则，将部分过量轮次控制对象变更为不足轮次控制对象；If the total amount of controllable load that needs to be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle of adjusting the minimum number of low-frequency load shedding devices and the minimum number of control objects, change part of the excessive round control objects to insufficient round control objects ;
可减少可控制负荷量轮次与不足轮次间可控负荷量调整包括：The adjustment of the controllable load between rounds that can reduce the controllable load and insufficient rounds includes:
若可以减少的可控制负荷总量不大于需要增加的可控制负荷总量，将可减少可控制负荷量轮次控制对象变更为不足轮次控制对象；If the total controllable load that can be reduced is not greater than the total controllable load that needs to be increased, change the round control object of the controllable load that can be reduced to the insufficient round control object;
若可以减少的可控制负荷总量大于需要增加的可控制负荷总量，以调整的低频减载装置数目最少、控制对象数目最少为原则，将部分可减少可控制负荷量轮次控制对象变更为不足轮次控制对象。If the total amount of controllable load that can be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle that the number of low-frequency load shedding devices to be adjusted is the least and the number of control objects is the least, the number of control objects that can be reduced and controllable load is changed to Insufficient rounds to control the object.
在线动态优化调整低频减载各轮次控制对象的系统，包括：Online dynamic optimization and adjustment of the system for each round of low-frequency load shedding control objects, including:
总量统计模块：统计低频减载每个轮次的实际可控制负荷总量；Total statistics module: statistics of the actual controllable total load of each round of low-frequency load shedding;
评估模块：计算每个轮次需控制负荷总量的上限值和下限值，对每个轮次的实际可控制负荷总量进行适应性评估，获取不适应轮次；Evaluation module: calculate the upper limit and lower limit of the total load to be controlled in each round, conduct adaptability assessment on the actual controllable total load in each round, and obtain unsuitable rounds;
负荷量计算模块：计算不适应轮次的需调整可控制负荷量；Load calculation module: calculate the adjustable controllable load that is not suitable for the round;
策略制定模块：根据不适应轮次的需调整可控制负荷量和预设规则，制定调整各轮次控制对象的策略；Strategy formulation module: According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
调整模块：根据调整各轮次控制对象的策略，进行控制对象调整。Adjustment module: adjust the control objects according to the strategy of adjusting the control objects in each round.
一种存储一个或多个程序的计算机可读存储介质，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行在线动态优化调整低频减载各轮次控制对象的方法。A computer-readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform rounds of online dynamic optimization adjustment under-frequency load shedding A method for secondary control objects.
一种计算设备，包括一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所 述一个或多个处理器执行，所述一个或多个程序包括用于执行在线动态优化调整低频减载各轮次控制对象的方法的指令。A computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more Executed by multiple processors, the one or more programs include instructions for executing the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding.
本发明所达到的有益效果：本发明对各轮次的实际可控制负荷总量进行适应性评估，基于实际可控制负荷总量不适应轮次的需调整可控制负荷量，制定调整各轮次控制对象的策略，实现控制对象的优化调整，从而提升低频减载控制策略的自适应性和精准性水平，解决了基于低频减载控制对象固定的模式存在低频减载控制总量不足或过控隐患，为电网安全第三道防线充分发挥应有作用提供更好的技术支撑。Beneficial effects achieved by the present invention: the present invention evaluates the adaptability of the total actual controllable load of each round, and formulates and adjusts each round based on the fact that the actual total controllable load does not adapt to the round and needs to adjust the controllable load The strategy of the control object realizes the optimization and adjustment of the control object, thereby improving the adaptability and precision level of the low-frequency load shedding control strategy, and solving the problem of insufficient or over-control of the total amount of low-frequency load shedding control based on the fixed mode of the low-frequency load shedding control object hidden dangers, and provide better technical support for the third line of defense of power grid security to fully play its due role.
附图说明Description of drawings
图1为本发明方法的流程图。Fig. 1 is the flowchart of the method of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
如图1所示，在线动态优化调整低频减载各轮次控制对象的方法，包括以下步骤：As shown in Figure 1, the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding includes the following steps:
步骤1，统计低频减载每个轮次的实际可控制负荷总量；Step 1, counting the actual controllable total load of each round of low-frequency load shedding;
步骤2，计算每个轮次需控制负荷总量的上限值和下限值，对每个轮次的实际可控制负荷总量进行适应性评估，获取不适应轮次；Step 2, calculate the upper limit and lower limit of the total amount of load to be controlled in each round, and evaluate the adaptability of the actual total controllable load in each round to obtain the unsuitable rounds;
步骤3，计算不适应轮次的需调整可控制负荷量；其中，不适应轮次包括实际可控制负荷总量不足轮次和过量轮次；Step 3, calculate the amount of controllable load that needs to be adjusted for the unsuitable rounds; among them, the unsuitable rounds include the rounds with insufficient total actual controllable load and the excessive rounds;
步骤4，根据不适应轮次的需调整可控制负荷量和预设规则，制定调整各轮次控制对象的策略；Step 4. According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
步骤5，根据调整各轮次控制对象的策略，进行控制对象调整。Step 5, adjust the control object according to the strategy for adjusting the control object in each round.
上述方法对各轮次的实际可控制负荷总量进行适应性评估，基于实际可控制负荷总量不适应轮次的需调整可控制负荷量，制定调整各轮次控制对象的策略，实现控制对象的优化调整，从而提升低频减载控制策略的自适应性和精准性水平，解决了基于低频减载控制对象固定的模式存在低频减载控制总量不足或过控隐患，为电网安全第三道防线充分发挥应有作用提供更好的技术支撑。The above method evaluates the adaptability of the actual total controllable load of each round, and formulates strategies for adjusting the control objects of each round based on the fact that the actual total controllable load does not adapt to the round. The optimization and adjustment of the low-frequency load shedding control strategy improves the adaptability and accuracy of the low-frequency load shedding control strategy, and solves the hidden dangers of insufficient or over-control of the low-frequency load shedding control in the mode based on the fixed low-frequency load shedding control object. The defense line should fully play its due role and provide better technical support.
在进行实际可控制负荷总量统计之前，先获取基础信息，基础信息包括低频减载装置配置、低频减载装置实时运行信息、低频减载装置控制对象信息、低频减载装置控制对象的实时运行信息和电网实时总负荷；Before the actual controllable total load statistics, the basic information should be obtained first. The basic information includes the configuration of the low-frequency load shedding device, the real-time operation information of the low-frequency load shedding device, the information of the control object of the low-frequency load shedding device, and the real-time operation of the control object of the low-frequency load shedding device. Information and real-time total load of the power grid;
其中，低频减载装置配置包括低频减载装置配置的减载轮次信息、跳闸出口组数，低频减载装置控制对象信息包括各轮次跳闸出口控制的线路与主变等控制对象信息；Among them, the configuration of the low-frequency load shedding device includes the information of the load shedding rounds and the number of trip outlet groups configured by the low-frequency load shedding device, and the control object information of the low-frequency load shedding device includes the control object information such as the circuit and the main transformer controlled by the trip outlet of each round;
低频减载装置实时运行信息，包括装置的“运行”、“装置闭锁”、“PT断线”、“通信异常”、“总功能压板”和“低频功能压板”等信号的实际状态，这些信息由低频减载装置实时上送到调度主站。Real-time operation information of the low-frequency load shedding device, including the actual status of signals such as "running", "device locking", "PT disconnection", "communication abnormality", "general function pressure plate" and "low frequency function pressure plate" of the device, these information It is sent to the dispatching master station in real time by the low-frequency load shedding device.
低频减载装置控制对象的实时运行信息，包括控制对象(线路或主变)出口压板投退状态和实时有功功率。这些信息由低频减载装置实时上送到调度主站。The real-time operation information of the control object of the low-frequency load shedding device includes the status of the control object (line or main transformer) outlet pressure plate switching on and off and real-time active power. The information is sent to the dispatching master station in real time by the low frequency load shedding device.
基于上述基础信息，进行低频减载各轮次的实际可控制负荷总量统计，具体计算公式如下：Based on the above basic information, the actual controllable total load statistics of each round of low-frequency load shedding are carried out. The specific calculation formula is as follows:
Figure PCTCN2021123952-appb-000002
Figure PCTCN2021123952-appb-000002
其中，其中，Prc i为轮次i的实际可控制负荷总量，Pr i,k,l为低频减载装置k轮次i低频减载实际可控制对象l的实时有功功率，KT为低频减载装置总数，LT i,k为低频减载装置k轮次i低频减载实际可控制对象总数。 Among them, Prc i is the actual controllable total load of round i, Pr i,k,l is the real-time active power of the actual controllable object l of low-frequency load shedding device k in round i, and KT is the low-frequency load shedding The total number of loading devices, LT i,k is the actual total number of controllable objects of the low-frequency load shedding device k round i low-frequency load shedding.
低频减载实际可控制对象：在满足低频减载动作条件时，低频减载装置能自动出口跳闸的控制对象，与低频减载装置的实际运行状态和控制对象出口压板的实际运行状态相关。Actual controllable object of low-frequency load shedding: when the action condition of low-frequency load shedding is met, the control object that the low-frequency load shedding device can automatically trip at the outlet is related to the actual operating state of the low-frequency load shedding device and the actual operating state of the outlet pressure plate of the control object.
低频减载装置“运行”正常、“总功能压板”和“低频功能压板”处于投入状态，则该装置具备低频减载功能；进一步，控制对象出口压板处于投入状态，则该控制对象为低频减载实际可控制对象。If the low-frequency load shedding device is "operating" normally, and the "general function pressure plate" and "low-frequency function pressure plate" are in the input state, then the device has the low-frequency load shedding function; Load the actual controllable objects.
计算各轮次需控制负荷总量的上限值和下限值，对各轮次的实际可控制负荷总量进行适应性评估，具体过程为：Calculate the upper limit and lower limit of the total load that needs to be controlled in each round, and conduct an adaptability assessment of the actual controllable total load in each round. The specific process is as follows:
21)计算各轮次需控制负荷总量的上限值和下限值；21) Calculate the upper limit and lower limit of the total load to be controlled in each round;
具体如下：details as follows:
Plo i＝PTO*PC i*Perlo i Plo i =PTO*PC i *Perlo i
Pup i＝PTO*PC i*Perup i Pup i =PTO*PC i *Perup i
其中，Plo i为轮次i需控制负荷总量下限值，Pup i为轮次i需控制负荷总量上限值，PTO为电网实时总有功负荷，PC i为轮次i可控制负荷总量整定值，运行规划工程师离线整定，以电网负荷的百分比表示，Perlo i为下限系数(典型值为0.985)，Perup i为上限系数(典型值为1.015)； Among them, Plo i is the lower limit of the total load to be controlled in round i, Pup i is the upper limit of the total load to be controlled in round i, PTO is the real-time total active load of the power grid, and PC i is the total controllable load in round i. Quantity setting value, offline setting by the operation planning engineer, expressed as a percentage of the grid load, Perlo i is the lower limit coefficient (typical value is 0.985), Perup i is the upper limit coefficient (typical value is 1.015);
电网低频减载各轮次可控制负荷总量整定值，是电网运行规划工程师基于电网离线仿真分析计算获得，通常以每轮次可控制负荷总量占电网负荷的百分比表示，通常该定值每年更新一次；The setting value of the total controllable load of each round of low-frequency load shedding of the power grid is calculated by the power grid operation planning engineer based on the offline simulation analysis of the power grid. It is usually expressed as a percentage of the total controllable load of each round to the grid load. update once;
电网运行规划工程师进行低频减载离线分析计算整定时，根据各轮次最大减载量和最小减载量约束，对Perlo i、Perup i进行校核，给出推荐值。 When the power grid operation planning engineer conducts off-line analysis, calculation and adjustment of low-frequency load shedding, Perlo i and Perup i are checked according to the maximum and minimum load shedding constraints of each round, and recommended values are given.
22)若实际可控制负荷总量位于上限值和下限值范围内，则该轮次的实际可控制负荷总量适应当前电网运行方式要求；否则该轮次的实际可控制负荷总量不适应当前电网运行方式要求；22) If the total actual controllable load is within the range of the upper limit and the lower limit, then the total actual controllable load of this round meets the requirements of the current grid operation mode; otherwise, the total actual controllable load of this round is not Adapt to the requirements of the current grid operation mode;
若Plo i≤Prc i≤Pup i，即实际可控制负荷总量位于上限值和下限值范围内，则该轮次的实际可控制负荷总量适应当前电网运行方式要求。 If Plo i ≤ Prc i ≤ Pup i , that is, the actual total controllable load is within the range of the upper limit and the lower limit, then the actual total controllable load of this round meets the requirements of the current power grid operation mode.
若Plo i＞Prc i或Prc i＞Pup i，即实际可控制负荷总量不位于上限值和下限值范围内，则该轮次的实际可控制负荷总量不适应当前电网运行方式要求。 If Plo i > Prc i or Prc i > Pup i , that is, the actual total controllable load is not within the range of the upper limit and the lower limit, then the actual total controllable load of this round does not meet the requirements of the current power grid operation mode .
计算实际可控制负荷总量不适应轮次的需调整可控制负荷量，根据预设规则，制定调整各实际可控制负荷总量不适应轮次控制对象的策略，具体如下：Calculate the controllable load that needs to be adjusted if the total actual controllable load does not adapt to the round, and formulate a strategy for adjusting the total actual controllable load that does not adapt to the control object of the round according to the preset rules, as follows:
计算实际可控制负荷总量不适应轮次的需调整可控制负荷量：Calculate the amount of controllable load that needs to be adjusted when the actual total controllable load does not adapt to the round:
1)若实际可控制负荷总量小于对应的下限值，即Plo i＞Prc i，则该轮次为不足轮次，需要增加的可控制负荷量为下限值减去实际可控制负荷总量，即PInc i＝Plo i-Prc i。 1) If the total actual controllable load is less than the corresponding lower limit, that is, Plo i > Prc i , then the round is insufficient, and the amount of controllable load that needs to be increased is the lower limit minus the total actual controllable load Quantity, that is, PInc i =Plo i -Prc i .
2)若实际可控制负荷总量大于对应的上限值，即Prc i＞Pup i，则该轮次为过量轮次，需要减少的可控制负荷量为实际可控制负荷总量减去上限值，即PDec i＝Prc i-Pup i。 2) If the actual total controllable load is greater than the corresponding upper limit, that is, Prc i > Pup i , then the round is an excessive round, and the controllable load that needs to be reduced is the actual total controllable load minus the upper limit value, that is, PDec i =Prc i -Pup i .
预设规则如下：The preset rules are as follows:
规则1：若仅有不足轮次，与其他可减少可控制负荷量轮次进行轮次间可控负荷量调整；其中，若实际可控制负荷总量大于对应的下限值、并不大于对应的上限值，则该轮次为可减少可控制负荷量轮次；Rule 1: If there are only insufficient rounds, adjust the controllable load between rounds with other rounds that can reduce the controllable load; among them, if the actual total controllable load is greater than the corresponding lower limit and not greater than the corresponding The upper limit value, then this round is a round that can reduce the controllable load;
规则2：若仅有过量轮次，进行轮次内部可控负荷量调整；Rule 2: If there are only excessive rounds, adjust the controllable load within the round;
规则3：若既存在不足轮次也存在过量轮次，先将过量轮次和不足轮次进行轮次间可控负荷量调整；若调整后仅剩余过量轮次，则根据规则2进行调整；若调整后仅剩余不足轮次，则根据规则1进行调整。Rule 3: If there are both insufficient rounds and excessive rounds, first adjust the controllable load between the excess rounds and insufficient rounds; if only excess rounds remain after adjustment, adjust according to rule 2; If there are only insufficient rounds left after the adjustment, it will be adjusted according to Rule 1.
上述轮次间可控负荷量调整有两种，一种为过量轮次与不足轮次间可控负荷量调整，另一种为可减少可控制负荷量轮次与不足轮次间可控负荷量调整；There are two kinds of controllable load adjustments between the above rounds, one is the controllable load adjustment between excessive rounds and insufficient rounds, and the other is the controllable load between rounds and insufficient rounds that can reduce the controllable load Quantity adjustment;
过量轮次与不足轮次间可控负荷量调整：Controllable load adjustment between excess rounds and insufficient rounds:
若需要减少的可控制负荷总量不大于需要增加的可控制负荷总量，将过量轮次控制对象变更为不足轮次控制对象；If the total controllable load that needs to be reduced is not greater than the total controllable load that needs to be increased, change the control object of excess rounds to the control object of insufficient rounds;
若需要减少的可控制负荷总量大于需要增加的可控制负荷总量，以调整的低频减载装置数目最少、控制对象数目最少为原则，将部分过量轮次控制对象变更为不足轮次控制对象；If the total amount of controllable load that needs to be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle of adjusting the minimum number of low-frequency load shedding devices and the minimum number of control objects, change part of the excessive round control objects to insufficient round control objects ;
可减少可控制负荷量轮次与不足轮次间可控负荷量调整：Adjustment of controllable load between rounds of controllable load and insufficient rounds:
若可以减少的可控制负荷总量不大于需要增加的可控制负荷总量，将可减少可控制负荷量轮次控制对象变更为不足轮次控制对象；If the total controllable load that can be reduced is not greater than the total controllable load that needs to be increased, change the round control object of the controllable load that can be reduced to the insufficient round control object;
若可以减少的可控制负荷总量大于需要增加的可控制负荷总量，以调整的低频减载装置数目最少、控制对象数目最少为原则，将部分可减少可控制负荷量轮次控制对象变更为不足轮次控制对象。If the total amount of controllable load that can be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle that the number of low-frequency load shedding devices to be adjusted is the least and the number of control objects is the least, the number of control objects that can be reduced and controllable load is changed to Insufficient rounds to control the object.
轮次间调整以“先基本轮，再特殊轮；基本轮以先动作的轮次优先”为原则，如以过量轮次与不足轮次间调整为例：将过量轮次j的控制量(控制量为可控制负荷量的简称)调整为不足轮次i1需要增加的控制量，过量轮次j变更为不足轮次i1的调整量PAj i1,j＝min{PInc i1,PDec j}； The adjustment between rounds is based on the principle of "basic rounds first, then special rounds; basic rounds give priority to the rounds that act first". For example, take the adjustment between excessive rounds and insufficient rounds: the control amount of excessive The control amount is the abbreviation of the controllable load) adjusted to the control amount that needs to be increased for less than round i1, and the excess round j is changed to the adjustment amount PAj i1,j =min{PInc i1 ,PDec j } for less than round i1;
调整后，不足轮次i1的控制总量为Prc i+PAj i1,j，还需增加的控制量为PInc i1-PAj i1,j；过量轮次j的控制总量为Prc j-PAj i1,j，还需减少的控制量为PDec j-PAj i1,j；若PInc i-PAj i1,j大于0，则说明不足轮次i1还需要增加控制量，从其他要减少控制量的轮次调增控制量；若PDec j-PAj i1,j大于0，则说明过量轮次j还需要减少控制量，可将其过量的控制量调整到其它需要增加控制量的轮次。 After adjustment, the total amount of control of the insufficient round i1 is Prc i +PAj i1,j , and the additional control amount is PInc i1 -PAj i1,j ; the total amount of control of the excessive round j is Prc j -PAj i1, j , the control amount to be reduced is PDec j -PAj i1,j ; if PInc i -PAj i1,j is greater than 0, it means that the control amount needs to be increased for the round i1. Increase the control amount; if PDec j -PAj i1,j is greater than 0, it means that the excessive round j needs to reduce the control amount, and the excessive control amount can be adjusted to other rounds that need to increase the control amount.
不失一般性，针对需要将过量轮次j的控制量减少变更为不足轮次i1的控制量增加的情况，统计低频减载装置k过量轮次j的实际可控制量：Without loss of generality, in view of the need to change the reduction of the control amount of the excess round j to the increase of the control amount of less than the round i1, the actual controllable amount of the excessive round j of the low-frequency load shedding device k is counted:
Figure PCTCN2021123952-appb-000003
Figure PCTCN2021123952-appb-000003
以参与过量轮次j变更为不足轮次i1的低频减载装置数目最少为原则，按Prc k,j从大到小的顺序，若满足
Figure PCTCN2021123952-appb-000004
大于等于需要变更为不足轮次i1的减载控制总量，
Figure PCTCN2021123952-appb-000005
小于需要变更为不足轮次i1的减载控制总量，则K j,i1个低频减载装置参与该变更过程。 Based on the principle that the number of low-frequency load shedding devices participating in the excessive round j changing to the short round i1 is the least, according to the order of Prc k,j from large to small, if it satisfies
Figure PCTCN2021123952-appb-000004
Greater than or equal to the total amount of load shedding control that needs to be changed to less than round i1,
Figure PCTCN2021123952-appb-000005
is less than the total amount of load shedding control that needs to be changed to less than round i1, then K j,i1 low-frequency load shedding devices participate in the change process.
前K j,i1-1个低频减载装置在过量轮次j的所有控制对象，全部变更为不足轮次i1控制对象，针对第K j,i1个低频减载装置的控制对象，以过量轮次j变更为不足轮次i1的控制对象数目最少为原则，按Pr j,k,l从大到小的顺序，确定变更轮次控制对象，使
Figure PCTCN2021123952-appb-000006
大于等于需要变更为不足轮次i1的减载控制总量。 All the control objects of the first K j,i1 -1 low-frequency load shedding devices in the excess round j are all changed to the control objects of the insufficient round i1, and for the control objects of the K j,i1th low-frequency load shedding device, the excess round According to the principle that the number of control objects whose time j is changed to be less than the number of control objects of the round i1 is the least, according to the order of Pr j, k, l from large to small, determine the change of the control objects of the round, so that
Figure PCTCN2021123952-appb-000006
Greater than or equal to the total amount of load shedding control that needs to be changed to less than round i1.
可减少可控制负荷量轮次与不足轮次间调整和上述过量轮次与不足轮次间调整类似。The adjustment between rounds and insufficient rounds that can reduce the controllable load is similar to the adjustment between the above-mentioned excessive rounds and insufficient rounds.
轮次内部可控负荷量调整为：以调整的低频减载装置数目最少、控制对象数目最少为原则，根据需要减少的可控制负荷量，闭锁该过量轮次中低频减载装置出口控制对象。The adjustment of the internal controllable load of the round is: based on the principle of the least number of adjusted low-frequency load shedding devices and the least number of control objects, according to the required reduction of the controllable load, block the exit control object of the low-frequency load shedding device in the excessive round.
策略采用三元表的形式{j，i，l}，表示控制对象l由轮次j出口动作控制调整为轮次i出口动作控制，若i＝j，则表示控制对象l由轮次j出口动作调整为闭锁出口动作。The strategy adopts the form of ternary table {j, i, l}, which means that the control object l is adjusted from the exit action control of round j to the exit action control of round i. If i=j, it means that the control object l is exited by round j The action is adjusted to the action of blocking the exit.
根据调整各轮次控制对象的策略，进行控制对象调整，具体将需要调整低频减载出口动作轮次控制对象信息下发到相关变电站低频减载装置，变电站低频减载装置将出口动作轮次进行相应更新。According to the strategy of adjusting the control objects of each round, adjust the control objects. Specifically, the information of the control objects that need to be adjusted in the round of the export action of the low-frequency load shedding will be sent to the relevant substation low-frequency load shedding device, and the substation low-frequency load shedding device will carry out the round of the export action. Update accordingly.
遵循DL/T 5003等通用的国家和行业规范标准，满足信息安全要求，调度主站和低频减载装置之间采用支持DL/T 476、DL/T 634.5101、DL/T 634.5104等通信标准传输协议，实现二者之间的数据传输与交互，调度主站将调整策略三元表，传送给低频减载装置，低频减载装置接收到调整策略三元表后，对控制对象进行调整。Comply with general national and industry standards such as DL/T 5003, and meet information security requirements. Communication standard transmission protocols such as DL/T 476, DL/T 634.5101, and DL/T 634.5104 are adopted between the dispatching master station and the low-frequency load shedding device , to realize the data transmission and interaction between the two, the dispatching master station will adjust the strategy ternary table, and send it to the low-frequency load shedding device, and the low-frequency load shedding device will adjust the control object after receiving the adjustment strategy ternary table.
上述方法充分考虑了电网低频减载合适的控制总量与大功率缺额发生前的全网总有功功率密切相关的特点，对各轮次的实际可控制负荷总量进行适应性评估，基于实际可控制负荷总量不适应轮次的需调整可控制负荷量，制定调整各轮次控制对象的策略，实现控制对象的优化调整，从而提升低频减载控制策略的自适应性和精准性水平，解决了基于低频减载控制对象固定的模式存在低频减载控制总量不足或过控隐患，为电网安全第三道防线充分发挥应有作用提 供更好的技术支撑。The above method fully considers the characteristics that the appropriate control amount of low-frequency load shedding is closely related to the total active power of the whole network before the occurrence of a large power shortage, and conducts an adaptability assessment of the actual controllable total load of each round. If the total amount of control load does not adapt to the rounds, it is necessary to adjust the controllable load, formulate strategies for adjusting the control objects of each round, and realize the optimal adjustment of the control objects, thereby improving the adaptability and accuracy of the low-frequency load shedding control strategy, and solving the problem. The model based on fixed low-frequency load shedding control objects has insufficient or over-control hidden dangers in the total amount of low-frequency load shedding control, and provides better technical support for the third line of defense of power grid security to fully play its due role.
上述方法相应的软件系统，即在线动态优化调整低频减载各轮次控制对象的系统，包括：The software system corresponding to the above method, that is, the system for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding, includes:
总量统计模块：统计低频减载每个轮次的实际可控制负荷总量；Total statistics module: statistics of the actual controllable total load of each round of low-frequency load shedding;
评估模块：计算每个轮次需控制负荷总量的上限值和下限值，对每个轮次的实际可控制负荷总量进行适应性评估，获取不适应轮次；Evaluation module: calculate the upper limit and lower limit of the total load to be controlled in each round, conduct adaptability assessment on the actual controllable total load in each round, and obtain unsuitable rounds;
负荷量计算模块：计算不适应轮次的需调整可控制负荷量；Load calculation module: calculate the adjustable controllable load that is not suitable for the round;
策略制定模块：根据不适应轮次的需调整可控制负荷量和预设规则，制定调整各轮次控制对象的策略；Strategy formulation module: According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
调整模块：根据调整各轮次控制对象的策略，进行控制对象调整。Adjustment module: adjust the control objects according to the strategy of adjusting the control objects in each round.
一种存储一个或多个程序的计算机可读存储介质，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行在线动态优化调整低频减载各轮次控制对象的方法。A computer-readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform rounds of online dynamic optimization adjustment under-frequency load shedding A method for secondary control objects.
一种计算设备，包括一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序包括用于执行在线动态优化调整低频减载各轮次控制对象的方法的指令。A computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more Executed by multiple processors, the one or more programs include instructions for executing the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding.
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.
以上仅为本发明的实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均包含在申请待批的本发明的权利要求范围之内。The above are only embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the pending application of the present invention. within the scope of the claims.

Claims (10)

  1. 在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，包括：The method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding is characterized in that it includes:
    统计低频减载每个轮次的实际可控制负荷总量；Statistics of the actual controllable total load of each round of low-frequency load shedding;
    计算每个轮次需控制负荷总量的上限值和下限值，对每个轮次的实际可控制负荷总量进行适应性评估，获取不适应轮次；Calculate the upper limit and lower limit of the total load that needs to be controlled in each round, and conduct an adaptability assessment of the actual total controllable load in each round to obtain unsuitable rounds;
    计算不适应轮次的需调整可控制负荷量；Calculate the adjustable controllable load that is not suitable for the round;
    根据不适应轮次的需调整可控制负荷量和预设规则，制定调整各轮次控制对象的策略；According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
    根据调整各轮次控制对象的策略，进行控制对象调整。Adjust the control objects according to the strategy of adjusting the control objects in each round.
  2. 根据权利要求1所述的在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，统计实际可控制负荷总量采用的公式为：According to the method for online dynamic optimization and adjustment of each round of low-frequency load shedding control objects according to claim 1, it is characterized in that the formula used for counting the actual total controllable load is:
    Figure PCTCN2021123952-appb-100001
    Figure PCTCN2021123952-appb-100001
    其中，Prc i为轮次i的实际可控制负荷总量，Pr i,k,l为低频减载装置k轮次i低频减载实际可控制对象l的实时有功功率，KT为低频减载装置总数，LT i,k为低频减载装置k轮次i低频减载实际可控制对象总数。 Among them, Prc i is the actual controllable total load of round i, Pr i,k,l is the real-time active power of the actual controllable object l of low-frequency load shedding device k in round i, and KT is the low-frequency load shedding device The total number, LT i,k is the actual total number of controllable objects of the low-frequency load shedding device k round i low-frequency load shedding.
  3. 根据权利要求1所述的在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，计算各轮次需控制负荷总量的上限值和下限值，对各轮次的实际可控制负荷总量进行适应性评估，具体过程为：According to the method for online dynamic optimization and adjustment of each round of low-frequency load shedding control objects according to claim 1, it is characterized in that, calculating the upper limit and lower limit of the total amount of load to be controlled in each round, the actual The total load can be controlled for adaptability assessment, the specific process is:
    计算每个轮次需控制负荷总量的上限值和下限值；Calculate the upper limit and lower limit of the total load to be controlled in each round;
    遍历所有轮次，若轮次的实际可控制负荷总量位于相应的上限值和下限值范围内，则该轮次的实际可控制负荷总量适应当前电网运行方式要求；否则该 轮次的实际可控制负荷总量不适应当前电网运行方式要求。Go through all the rounds, if the actual total controllable load of the round is within the corresponding upper limit and lower limit, then the actual total controllable load of this round is suitable for the requirements of the current power grid operation mode; otherwise, the round The actual total controllable load does not meet the requirements of the current power grid operation mode.
  4. 根据权利要求1或3所述的在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，计算各轮次需控制负荷总量的上限值和下限值，具体公式为：According to claim 1 or 3, the method for online dynamic optimization and adjustment of control objects in each round of low-frequency load shedding is characterized in that the upper limit and lower limit of the total load to be controlled in each round are calculated, and the specific formula is:
    Plo i＝PTO*PC i*Perlo i Plo i =PTO*PC i *Perlo i
    Pup i＝PTO*PC i*Perup i Pup i =PTO*PC i *Perup i
    其中，Plo i为轮次i需控制负荷总量下限值，Pup i为轮次i需控制负荷总量上限值，PTO为电网实时总有功负荷，PC i为轮次i可控制负荷总量整定值，Perlo i为下限系数，Perup i为上限系数。 Among them, Plo i is the lower limit of the total load to be controlled in round i, Pup i is the upper limit of the total load to be controlled in round i, PTO is the real-time total active load of the power grid, and PC i is the total controllable load of round i. Quantity setting value, Perlo i is the lower limit coefficient, Perup i is the upper limit coefficient.
  5. 根据权利要求4所述的在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，所述不适应轮次包括不足轮次和过量轮次；计算实际可控制负荷总量不适应轮次的需调整可控制负荷量，具体过程为：According to the method for online dynamic optimization and adjustment of control objects in each round of low-frequency load shedding according to claim 4, it is characterized in that the unsuitable rounds include insufficient rounds and excessive rounds; The rounds need to be adjusted to control the load, and the specific process is as follows:
    若实际可控制负荷总量小于对应的下限值，则该轮次为不足轮次，需要增加的可控制负荷量为下限值减去实际可控制负荷总量；If the total amount of actual controllable load is less than the corresponding lower limit, the round is insufficient, and the amount of controllable load that needs to be increased is the lower limit minus the total amount of actual controllable load;
    若实际可控制负荷总量大于对应的上限值，则该轮次为过量轮次，需要减少的可控制负荷量为实际可控制负荷总量减去上限值。If the total actual controllable load is greater than the corresponding upper limit, the round is an excessive round, and the controllable load that needs to be reduced is the total actual controllable load minus the upper limit.
  6. 根据权利要求5所述的在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，预设规则为：According to the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding according to claim 5, it is characterized in that the preset rules are:
    规则1：若仅有不足轮次，与可减少可控制负荷量轮次进行轮次间可控负荷量调整；其中，若实际可控制负荷总量大于对应的下限值、并不大于对应的上限值，则该轮次为可减少可控制负荷量轮次；Rule 1: If there are only insufficient rounds, adjust the controllable load between rounds with the number of rounds that can reduce the controllable load; among them, if the actual total controllable load is greater than the corresponding lower limit and not greater than the corresponding upper limit value, then this round is a round that can reduce the controllable load;
    规则2：若仅有过量轮次，进行轮次内部可控负荷量调整；Rule 2: If there are only excessive rounds, adjust the controllable load within the round;
    规则3：若既存在不足轮次也存在过量轮次，先将不足轮次与过量轮次进行轮次间可控负荷量调整；若调整后仅剩余过量轮次，则根据规则2进行调整；若调整后仅剩余不足轮次，则根据规则1进行调整。Rule 3: If there are both insufficient rounds and excessive rounds, first adjust the controllable load between the insufficient rounds and the excessive rounds; if only the excess rounds remain after adjustment, adjust according to Rule 2; If there are only insufficient rounds left after the adjustment, it will be adjusted according to Rule 1.
  7. 根据权利要求6所述的在线动态优化调整低频减载各轮次控制对象的方法，其特征在于，According to the method for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding according to claim 6, it is characterized in that,
    轮次内部可控负荷量调整包括：Adjustment of controllable load within a round includes:
    以调整的低频减载装置数目最少、控制对象数目最少为原则，根据需要减少的可控制负荷量，闭锁该过量轮次中低频减载装置出口控制对象；Based on the principle that the number of adjusted low-frequency load shedding devices is the least and the number of control objects is the least, according to the amount of controllable load that needs to be reduced, block the exit control objects of the low-frequency load shedding device in the excessive round;
    过量轮次与不足轮次间可控负荷量调整包括：Controllable load adjustments between excess rounds and insufficient rounds include:
    若需要减少的可控制负荷总量不大于需要增加的可控制负荷总量，将过量轮次控制对象变更为不足轮次控制对象；If the total controllable load that needs to be reduced is not greater than the total controllable load that needs to be increased, change the control object of excessive rounds to the control object of insufficient rounds;
    若需要减少的可控制负荷总量大于需要增加的可控制负荷总量，以调整的低频减载装置数目最少、控制对象数目最少为原则，将部分过量轮次控制对象变更为不足轮次控制对象；If the total amount of controllable load that needs to be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle of adjusting the minimum number of low-frequency load shedding devices and the minimum number of control objects, change part of the excessive round control objects to insufficient round control objects ;
    可减少可控制负荷量轮次与不足轮次间可控负荷量调整包括：The adjustment of the controllable load between rounds that can reduce the controllable load and insufficient rounds includes:
    若可以减少的可控制负荷总量不大于需要增加的可控制负荷总量，将可减少可控制负荷量轮次控制对象变更为不足轮次控制对象；If the total controllable load that can be reduced is not greater than the total controllable load that needs to be increased, change the round control object of the controllable load that can be reduced to the insufficient round control object;
    若可以减少的可控制负荷总量大于需要增加的可控制负荷总量，以调整的低频减载装置数目最少、控制对象数目最少为原则，将部分可减少可控制负荷量轮次控制对象变更为不足轮次控制对象。If the total amount of controllable load that can be reduced is greater than the total amount of controllable load that needs to be increased, based on the principle that the number of low-frequency load shedding devices to be adjusted is the least and the number of control objects is the least, the number of control objects that can be reduced and controllable load is changed to Insufficient rounds to control the object.
  8. 在线动态优化调整低频减载各轮次控制对象的系统，其特征在于，包括：The system for online dynamic optimization and adjustment of the control objects of each round of low-frequency load shedding is characterized in that it includes:
    总量统计模块：统计低频减载每个轮次的实际可控制负荷总量；Total statistics module: statistics of the actual controllable total load of each round of low-frequency load shedding;
    评估模块：计算每个轮次需控制负荷总量的上限值和下限值，对每个轮次的实际可控制负荷总量进行适应性评估，获取不适应轮次；Evaluation module: calculate the upper limit and lower limit of the total load to be controlled in each round, conduct adaptive evaluation on the actual controllable total load in each round, and obtain unsuitable rounds;
    负荷量计算模块：计算不适应轮次的需调整可控制负荷量；Load calculation module: calculate the adjustable controllable load that is not suitable for the round;
    策略制定模块：根据不适应轮次的需调整可控制负荷量和预设规则，制定调整各轮次控制对象的策略；Strategy formulation module: According to the need to adjust the controllable load and preset rules that are not suitable for the rounds, formulate strategies for adjusting the control objects of each round;
    调整模块：根据调整各轮次控制对象的策略，进行控制对象调整。Adjustment module: adjust the control objects according to the strategy of adjusting the control objects in each round.
  9. 一种存储一个或多个程序的计算机可读存储介质，其特征在于，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行根据权利要求1至7所述的方法中的任一方法。A computer-readable storage medium storing one or more programs, wherein the one or more programs comprise instructions which, when executed by a computing device, cause the computing device to perform the Any one of the methods described in 7.
  10. 一种计算设备，其特征在于，包括：A computing device, comprising:
    一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序包括用于执行根据权利要求1至7所述的方法中的任一方法的指令。one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more processors, The one or more programs include instructions for performing any of the methods according to claims 1-7.
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