Power regulation method considering AGC (Automatic Gain Control) section and related equipment

Abstract

The embodiment of the invention discloses a power regulation method and related equipment considering an AGC (Automatic Gain Control) section, and the method comprises the steps: obtaining a power regulation demand value of a control region according to the safety margin of a target power transmission section, the actual power flow of the section and the limit of the section, and precisely calculating the regulation demand of each control region; according to the power adjustment demand value and the adjustable power ranges of the new energy unit and the conventional unit, the adjustment power ranges of different units are obtained, the actual power of different units cannot exceed the adjustable power ranges under the conditions of power grid load change and new energy power generation fluctuation, the condition that new energy power generation excess cannot be consumed is effectively avoided, and the power consumption is reduced. The adjustment demand values are distributed according to the adjustment power ranges of different units, and the section adjustment power of the new energy unit and the conventional unit is obtained, so that the wind and light abandoning phenomenon is reduced, the operation efficiency of a power system is improved, the section out-of-limit risk is reduced, and the stability and economical efficiency of the power system are improved.

Description

[Technical field]

[0001] The present invention relates to the technical field of electric power dispatching automation, and in particular to a power regulation method taking AGC sections into account and related equipment. [Background technology]

[0002] Automatic Generation Control (AGC) of renewable energy is an important part of the power system. When the low-level sections of the power grid are limited due to factors such as network structure, transmission restrictions or load demand, the power generation of some renewable energy stations may not be absorbed by the local sections in time, resulting in power abandonment. At this time, if other sections of the entire network have enough space to accommodate renewable energy, and these sections also have restrictions on renewable energy, how to optimize scheduling and maximize the absorption of renewable energy becomes an important issue in the power system.

[0003] Existing technologies generally consider system safety constraints and use AGC to prevent and correct cross-section over-limit, which can effectively control the available power in stable cross-sections within the allowable range. However, this method focuses on the impact of normal AGC regulation on cross-section over-limit in cross-section control, and does not consider the problem of large total unit regulation after the introduction of new energy. Therefore, it will affect the operating efficiency of the power system and may also cause new cross-section over-limit risks, affecting the stability and economy of the power system. [Summary of the invention]

[0004] In view of this, the present invention provides a power regulation method and related equipment taking into account the AGC section.

[0005] The specific technical scheme of the first embodiment of the present invention is: a power regulation method taking into account the AGC section, applied to the control area of ​​the power grid, the control area includes a new energy unit, a conventional unit and at least one transmission section; the conventional unit is a non-new energy unit; the new energy unit and the conventional unit are used for power generation, and the transmission section is used to transmit the power generated by the new energy unit and the conventional unit to another control area; the method includes: obtaining the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual flow of the section and the section limit; the target transmission section is any transmission section in the control area; obtaining the first adjustment power range of the new energy unit according to the power regulation demand value and the first adjustable power range of the new energy unit; obtaining the second adjustment power range of the conventional unit according to the power regulation demand value and the second adjustable power range of the conventional unit; allocating the adjustment demand value according to the first adjustment power range and the second adjustment power range to obtain the section adjustment power of the new energy unit and the conventional unit.

[0006] Preferably, the power regulation requirement value is obtained using the following formula:

[0007] ARR RAW =P limit ·(1-δ%)-P real

[0008] Among them, ARR RAW is the power regulation requirement value, δ is the safety margin, P real is the actual flow of the section, P limit is the section limit, P limit (1-δ%) is the target tidal current of the section.

[0009] Preferably, the first adjustable power range includes a first maximum adjustable power value and a first minimum adjustable power value, and the first adjustable power range of the new energy unit is obtained according to the power regulation demand value and the first adjustable power range of the new energy unit, including: obtaining a first upper limit adjustment power value and a first lower limit adjustment power value according to the power regulation demand value, the first maximum adjustable power value and the first minimum adjustable power value; the first upper limit adjustment power value and the first lower limit adjustment power value constitute the first adjustment power range.

[0010] Preferably, the first upper limit adjustment power value and the first lower limit adjustment power value are obtained by using the following formula:

[0011]

[0012] in, adjusting the power value for the first upper limit, is the first maximum adjustable power value, ARR RAW is the power regulation demand value, adjusting the power value for the first lower limit, is the first minimum adjustable power value.

[0013] Preferably, the method also includes: dividing the target transmission section according to the section target flow, the actual flow and the section limit of the section to obtain the type of the target transmission section; the type includes normal area transmission section, emergency area transmission section and out-of-limit area transmission section; and adjusting the active power regulation strategy of the control area according to the type of the target transmission section.

[0014] Preferably, the target transmission section is divided according to the section target flow, the section actual flow and the section limit to obtain the type of the target transmission section, including: when the section target flow is greater than the section actual flow, the type of the target transmission section is the normal area transmission section; when the section actual flow is greater than the section target flow and the section actual flow is less than the section limit, the type of the target transmission section is the emergency area transmission section; when the section actual flow is greater than the section limit, the type of the target transmission section is the out-of-limit area transmission section.

[0015] Preferably, the active power regulation strategy of the control area is adjusted according to the type of the target transmission section, including: when the type of the target transmission section is the normal area transmission section, all new energy stations and conventional units associated with the target transmission section are not coordinated and controlled; when the type of the target transmission section is the emergency area transmission section, all conventional units associated with the target transmission section perform power adjustment in the direction of recovery of the target transmission section, and increase the active output value of the new energy stations in the control area, and reduce the active output value of the conventional power plants; the conventional power plants are non-new energy stations; when the type of the target transmission section is the out-of-limit area transmission section, the new energy stations in the control area participate in section adjustment.

[0016] The specific technical scheme of the second embodiment of the present invention is: a power regulation system taking into account the AGC section, the system comprising: a power regulation demand acquisition module, a first regulation power acquisition module, a second regulation power acquisition module and a power distribution module; the power regulation demand acquisition module is used to obtain the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual flow of the section and the section limit; the target transmission section is any transmission section in the control area; the first regulation power acquisition module is used to obtain the first regulation power range of the new energy unit according to the power regulation demand value and the first adjustable power range of the new energy unit; the second regulation power acquisition module is used to obtain the second regulation power range of the conventional unit according to the power regulation demand value and the second adjustable power range of the conventional unit; the power distribution module is used to allocate the regulation demand value according to the first regulation power range and the second regulation power range to obtain the section regulation power of the new energy unit and the conventional unit.

[0017] The specific technical solution of the third embodiment of the present invention is: a power regulation device taking into account the AGC section, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of the first embodiments of the present application.

[0018] The specific technical solution of the fourth embodiment of the present invention is: a computer-readable storage medium storing a computer program, which, when executed by a processor, enables the processor to perform the steps of the method described in any one of the first embodiments of the present application.

[0019] Implementing the embodiments of the present invention will have the following beneficial effects:

[0020] The present invention obtains the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual flow of the section and the section limit, and can accurately calculate the regulation demand of each control area; obtains the regulation power range of different units according to the power regulation demand value and the adjustable power range of the new energy unit and the conventional unit, and can ensure that the actual power of different units will not exceed the adjustable power range when the grid load changes and the new energy power generation fluctuates, effectively avoiding the situation where the excess new energy power generation cannot be consumed, and allocates the regulation demand value according to the regulation power range of different units to obtain the section regulation power of the new energy unit and the conventional unit, thereby reducing the phenomenon of wind and solar power abandonment, thereby improving the operating efficiency of the power system, reducing the risk of section over-limit, and improving the stability and economy of the power system.

Brief Description of the Drawings

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A flowchart of the steps of a power regulation method taking into account the AGC section;

[0023] Figure 2 It is a multi-type coordinated control flow chart;

[0024] Figure 3 It is a schematic diagram for calculating section constraints and adjustment requirements;

[0025] Figure 4 Assign schematic diagrams for section control deviations;

[0026] Figure 5 Schematic diagram for function enablement and coordination control;

[0027] Figure 6 It is a nested cross-section structure diagram;

[0028] Figure 7 Processing schematic diagrams for nested sections;

[0029] Figure 8 It is a schematic diagram of the structure of a power regulation system taking into account the AGC section;

[0030] Among them, 201 is a power regulation demand acquisition module; 202 is a first regulation power acquisition module; 203 is a second regulation power acquisition module; 204 is a power allocation module. [Specific implementation method]

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The terms "first", "second", etc. in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally includes steps or modules that are not listed, or optionally includes other steps or modules that are inherent to these processes, methods, products or devices.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] Automatic generation control is to adjust the active power of the generator set through the automatic control program in a certain area when the power system frequency or the power of the tie line changes, so as to maintain the system frequency or ensure the predetermined exchange power between regions. Its technical equipment system mainly includes the grid operation control system of dispatching agencies at all levels, telecontrol transmission channels, remote terminal equipment or computer monitoring systems of power plants, generator set coordination control systems, generator sets and their active power adjustment devices, and application software to realize the AGC function. For the regulation and control in which the new energy AGC participates, under normal circumstances, the new energy station generates electricity at its maximum capacity. When the grid encounters cross-section limit, peak regulation difficulty, insufficient reserve, frequency fluctuation, etc., the new energy AGC automatically adjusts the output power of the new energy power generation equipment (such as photovoltaic inverters) to meet the safety and stability needs of the grid.

[0035] A transmission section (hereinafter referred to as a section) refers to a group of lines that are interconnected in terms of grid security or electricity trading; from the perspective of network connection, a section refers to a family of interconnecting lines formed by multiple branches connecting two regions.

[0036] The section flow is the sum of the flow of each branch that makes up the section, which can clearly reflect the power exchange relationship between the two areas connected by the section. The transmission section concentrates the key links in the power grid. Power dispatching must not only conduct online and accurate monitoring of the active power flow of a single branch, but also the active power flow of the section to ensure safe and stable operation of the system.

[0037] See also Figure 1 , is a flowchart of the steps of a power regulation method taking into account the AGC section in the first embodiment of the present application, so as to improve the operating efficiency of the power system and reduce the risk of section over-limit, and is applied to the control area of ​​the power grid, the control area includes a new energy unit, a conventional unit and at least one transmission section; the conventional unit is a non-new energy unit; the new energy unit and the conventional unit are used for power generation, and the transmission section is used to transmit the power generated by the new energy unit and the conventional unit to another control area; the method includes:

[0038] Step 101: acquiring the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual power flow of the section and the section limit; the target transmission section is any transmission section in the control area;

[0039] Step 102: obtaining a first adjustment power range of the new energy generator set according to the power adjustment demand value and the first adjustable power range of the new energy generator set;

[0040] Step 103: obtaining a second adjustment power range of the conventional unit according to the power adjustment demand value and the second adjustable power range of the conventional unit;

[0041] Step 104: Allocate the regulation demand value according to the first regulation power range and the second regulation power range to obtain the section regulation power of the new energy unit and the conventional unit.

[0042] Specifically, the power regulation demand is calculated based on the space margin of the monitored section. A positive section margin indicates that the section has room for additional output and can accommodate more power output. A negative section margin indicates that the section is close to or exceeds the maximum capacity and requires power restriction. The power regulation demand of the control area is the space margin of the monitored section of the control area. A positive section margin indicates that there is room for additional output, and a negative section margin indicates that power restriction is required. At the same time, the adjustable power range (upper and lower limits) of new energy and conventional units under section restrictions is calculated and sent to the new energy AGC and conventional energy AGC; the adjustable power range (upper and lower limits of adjustment capacity) of new energy units and conventional units is calculated, and the section adjustment power of the new energy units and the conventional units is obtained according to the allocation of the adjustment demand value.

[0043] Section adjustment power calculation formula:

[0044]

[0045] Where: P 调节 Adjust the power of a certain unit section; P 调整 (i) is the regulating capacity of the unit, indicating the power range that the unit can adjust; P 总 The total power capacity of all participating adjustment units; P 总调节 It is the total regulating power calculated according to the section control requirements.

[0046] The method in this embodiment obtains the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual flow of the section and the section limit, and can accurately calculate the regulation demand of each control area; the regulation power range of different units is obtained according to the power regulation demand value and the adjustable power range of the new energy units and conventional units, so that the actual power of different units will not exceed the adjustable power range when the grid load changes and the new energy power generation fluctuates, and the situation of excess new energy power generation that cannot be consumed is effectively avoided. The regulation demand value is allocated according to the regulation power range of different units to obtain the section regulation power of the new energy units and conventional units, thereby reducing the phenomenon of wind and solar power abandonment, thereby improving the operating efficiency of the power system, reducing the risk of section over-limit, and improving the stability and economy of the power system.

[0047] In a specific embodiment, the power regulation requirement value is obtained using the following formula:

[0048] ARR RAW =P limit ·(1-δ%)-P real

[0049] Among them, ARR RAW is the power regulation requirement value, δ is the safety margin, P realis the actual flow of the section, P limit is the section limit, P limit (1-δ%) is the target tidal current of the section.

[0050] In a specific embodiment, the first adjustable power range includes a first maximum adjustable power value and a first minimum adjustable power value, and the first adjustable power range of the new energy unit is obtained according to the power regulation demand value and the first adjustable power range of the new energy unit, including: obtaining a first upper limit adjustment power value and a first lower limit adjustment power value according to the power regulation demand value, the first maximum adjustable power value and the first minimum adjustable power value; the first upper limit adjustment power value and the first lower limit adjustment power value constitute the first adjustment power range.

[0051] Specifically, each unit has a maximum adjustment capacity, which is usually determined by the rated power or maximum adjustable range of the unit. The maximum adjustment capacity of new energy units and conventional units is set as follows:

[0052] Maximum adjustable power (upper limit) of new energy units;

[0053] The minimum adjustable power (lower limit) of the new energy unit;

[0054] Maximum adjustable power (upper limit) of conventional units;

[0055] The minimum adjustable power (lower limit) of conventional units;

[0056] The above values ​​are determined by the grid system settings, the equipment characteristics of the unit and the grid operation requirements. RAW As well as the upper and lower limits of each unit’s regulation capability.

[0057] In a specific embodiment, the first upper limit adjustment power value and the first lower limit adjustment power value are obtained by using the following formula:

[0058]

[0059] in, adjusting the power value for the first upper limit, is the first maximum adjustable power value, ARR RAW is the power regulation demand value, adjusting the power value for the first lower limit, is the first minimum adjustable power value.

[0060] Specifically, the second upper limit regulating power of the conventional unit under the restricted condition is obtained by the following formula:

[0061]

[0062] The second lower limit regulation power of conventional units under restricted conditions is obtained using the following formula:

[0063]

[0064] ARR RAW The allocation is based on the upper and lower limits of the regulation capacity of new energy and conventional units to ensure that the regulation power of each unit does not exceed its maximum or minimum adjustable power; for example, if the regulation demand exceeds the maximum adjustable power of the new energy unit The remaining regulation demand will be distributed to the conventional units until the total regulation demand is reached.

[0065] During the section control process, the section control module will adjust the demand ARR according to the calculated power RAW , the control deviation will be allocated to each new energy station and conventional unit according to the pre-set power allocation strategy, and the section regulation power of each station participating in the adjustment will be obtained; to determine the upper and lower limits of regulation, it is necessary to calculate the upper and lower limits of regulation of new energy and conventional units under section restrictions, and send these limits to the new energy AGC and conventional energy AGC to ensure that the regulation does not exceed the set safety limit.

[0066] Control principle of new energy stations: Only when new energy stations participate in section control, according to the power regulation requirements and the power allocation strategy, the system will automatically start the strategy to control the active power of new energy when the action conditions are met.

[0067] In a specific embodiment, the method also includes: dividing the target transmission section according to the section target flow, the actual flow and the section limit of the section to obtain the type of the target transmission section; the type includes normal area transmission section, emergency area transmission section and out-of-limit area transmission section; adjusting the active power regulation strategy of the control area according to the type of the target transmission section.

[0068] In a specific embodiment, the target transmission section is divided according to the section target flow, the section actual flow and the section limit to obtain the type of the target transmission section, including: when the section target flow is greater than the section actual flow, the type of the target transmission section is the normal area transmission section; when the section actual flow is greater than the section target flow and the section actual flow is less than the section limit, the type of the target transmission section is the emergency area transmission section; when the section actual flow is greater than the section limit, the type of the target transmission section is the out-of-limit area transmission section.

[0069] In a specific embodiment, the active power regulation strategy of the control area is adjusted according to the type of the target transmission section, including: when the type of the target transmission section is the normal area transmission section, all new energy stations and conventional units associated with the target transmission section are not coordinated and controlled; when the type of the target transmission section is the emergency area transmission section, all conventional units associated with the target transmission section perform power adjustment in the direction of recovery of the target transmission section, and increase the active output value of the new energy stations in the control area, and reduce the active output value of the conventional power plant; the conventional power plant is a non-new energy station; when the type of the target transmission section is the out-of-limit area transmission section, the new energy stations in the control area participate in section adjustment.

[0070] For details, please refer to Figure 2 Based on the difference between the section flow and the section limit, the section operation area is divided into normal area, emergency area and over-limit area. Different control areas can adopt different active power regulation strategies. The regulation strategies are as follows:

[0071] 1) Active power regulation strategy in normal area

[0072] When P limit (1-δ%)-P real >0, that is, when it is in the normal zone, all new energy stations and conventional units associated with the section operate in the established manner without coordinated control.

[0073] 2) Active power regulation strategy in emergency zone

[0074] When P limit (1-δ%) <P real <P limit That is, when in the emergency zone, all conventional units associated with the section can only be adjusted in the direction of section recovery. At the same time, the increased active output of the new energy station is transferred to the conventional power plant for reduction.

[0075] 3) Active power regulation strategy in emergency area

[0076] When P real >P limit When the section current exceeds the limit, that is, crosses the limit area, the new energy station immediately participates in the section regulation.

[0077] In the specific embodiments, see Figure 3 Section constraint and adjustment requirement calculation diagram, Figure 4 Section control deviation allocation diagram and Figure 5Schematic diagram of function activation and coordinated control; the section control and peak load control functions are temporarily started and stopped manually. The manual operation will decide whether to start or exit the coordinated control function according to the real-time operation status of the power grid. The new energy AGC master station must have the function of section restricted flag. When the new energy station executes the power restriction instruction due to the section, the system should set a flag for the station to indicate that the section has been restricted. The flag will serve as the basis for the transfer of the section power restriction instruction to ensure that all relevant units can adjust their regulation strategies in real time.

[0078] In the specific embodiments, see Figure 6 and Figure 7 , when the low-level section is restricted and the new energy station under the section abandons power, and other sections of the whole network still have space to accept new energy (also limited), the system should transfer the limited output of the section to other section stations with transmission space in the whole network, so as to realize the consumption of new energy as much as possible, and at the same time ensure that all sections operate within the safety limit. In one control cycle, the system will calculate the instructions of each new energy station multiple times to ensure that the final instruction value of the new energy station can not only meet the safety constraints of all relevant sections, but also avoid unnecessary power restrictions on new energy stations, and improve the whole network's acceptance of new energy; in addition, when the power grid encounters emergency situations such as insufficient peak-shaving capacity, continuous high frequency of the system frequency, and large deviation of the interconnection line, if the frequency deviation exceeds the high-frequency threshold, no transfer will be performed.

[0079] The specific steps are as follows:

[0080] Step 1: Calculate power regulation requirements and pre-allocate regulation power

[0081] Calculate the power regulation requirements of the control area.

[0082] According to the currently selected power restriction execution strategy, the regulated power is pre-allocated to all relevant new energy stations in proportion, and the power restriction execution amount of each station is recorded;

[0083] Step 2: Check the bottom section and lock the restricted section

[0084] Combined with the power restriction execution amount and the preset execution strategy (such as recovery strategy), the verification starts from the lowest-level section where power restriction is caused by non-section reasons. If the power flow of a section exceeds its limit after the expected adjustment is superimposed, the section will be marked as "locked". The locked section and its subordinate stations will no longer participate in the power restriction instruction allocation. For some adjustment instructions of the locked section, they will be reallocated to the remaining power restriction stations caused by non-section reasons according to the preset execution strategy (such as recovery strategy).

[0085] Step 3: Error prevention check and condition judgment

[0086] Before executing the power-limiting instruction transfer, the system needs to perform an anti-error calibration again. The calibration conditions include: if the total ACE (total amount of regulation demand) of the area is displayed as a downward adjustment, and the frequency difference reaches the set high-frequency threshold, the calibration will fail. If the calibration fails, the power-limiting instruction transfer will be canceled and will not be executed. If the calibration passes, the system will continue to execute the power-limiting instruction transfer and accurately transfer the regulation instruction to other acceptable sites.

[0087] Through the above steps, the power restriction command transfer process can be effectively executed, ensuring the maximization of new energy consumption while avoiding over-regulation or safety risks in the power grid system due to command transfer.

[0088] The primary advantage of this application is that it significantly improves the absorption capacity of new energy. By accurately calculating the regulation requirements and section margins of each control area, it is possible to effectively avoid the situation where the excess power generation of new energy cannot be absorbed when the power grid load changes and the power generation of new energy fluctuates, thereby reducing the phenomenon of wind and light abandonment. Through intelligent adjustment of power distribution, the utilization rate of new energy is maximized, ensuring that the power grid can absorb new energy resources to the greatest extent while meeting the load demand, while also enhancing the safety and stability of the power grid. Through section constraints and dynamic adjustments, the system can monitor the flow state of each control area in real time to ensure that the output power of the section does not exceed the carrying capacity of the power grid. In the event of an emergency in the power grid, such as frequency deviation, sudden increase in load, etc., the system can automatically adjust the output of new energy and conventional units to ensure the stable operation of the power grid. In addition, according to the different states of the section flow, it is divided into normal area, emergency area and over-limit area, and a corresponding regulation strategy is set for each area to further ensure the safe operation of the power grid.

[0089] This application improves the regulation efficiency of the power grid through refined regulation power allocation. When the power grid faces different load regulation requirements, the system can accurately allocate the regulation power to each new energy station and conventional unit according to the regulation requirements calculated in real time, avoiding over-regulation or insufficient regulation. This intelligent scheduling method can ensure that the power grid maintains load balance during peak regulation, thereby improving the response speed and flexibility of the power system.

[0090] In addition to automatic regulation, the present application also specially designs a manual intervention mechanism, which provides flexible emergency response capabilities. When special or emergency situations occur in the power grid, the grid dispatcher can start or exit the section coordination control function through manual operation, and flexibly respond to changes in the operating status of the power grid. This combination of manual and automatic control provides a high degree of flexibility and response capabilities, especially in some emergencies or complex regulation strategies. Manual intervention can ensure the safe operation of the system.

[0091] In the specific embodiments, see Figure 8, is a schematic diagram of the structure of a power regulation system taking into account the AGC section in the second embodiment of the present application, the system comprising: a power regulation demand acquisition module 201, a first regulation power acquisition module 202, a second regulation power acquisition module 203 and a power allocation module 204;

[0092] The power regulation demand acquisition module 201 is used to acquire the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual power flow of the section and the section limit; the target transmission section is any transmission section in the control area;

[0093] The first regulating power acquisition module 202 is used to obtain the first regulating power range of the new energy generator set according to the power regulation demand value and the first adjustable power range of the new energy generator set;

[0094] The second regulating power acquisition module 203 is used to obtain the second regulating power range of the conventional unit according to the power regulation requirement value and the second adjustable power range of the conventional unit;

[0095] The power allocation module 204 is used to allocate the regulation demand value according to the first regulation power range and the second regulation power range to obtain the section regulation power of the new energy unit and the conventional unit.

[0096] The system in this embodiment obtains the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual flow of the section and the section limit, and can accurately calculate the regulation demand of each control area; obtains the regulation power range of different units according to the power regulation demand value and the adjustable power range of the new energy units and conventional units, so that the actual power of different units will not exceed the adjustable power range when the grid load changes and the new energy power generation fluctuates, effectively avoiding the situation where the excess new energy power generation cannot be consumed, and allocates the regulation demand value according to the regulation power range of different units to obtain the section regulation power of the new energy units and conventional units, thereby reducing the phenomenon of wind and solar power abandonment, thereby improving the operating efficiency of the power system, reducing the risk of section over-limit, and improving the stability and economy of the power system.

[0097] In a specific embodiment, the third embodiment of the present application provides a power regulation device taking into account the AGC section, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method as described in any one of the first embodiments of the present application.

[0098] In a specific embodiment, the fourth embodiment of the present application provides a computer-readable storage medium storing a computer program, characterized in that when the computer program is executed by a processor, the processor executes the steps of the method described in any one of the first embodiments of the present application.

[0099] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

[0100] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A power regulation method taking into account AGC sections, applied to a control area of ​​a power grid, wherein the control area includes a new energy unit, a conventional unit and at least one transmission section; the conventional unit is a non-new energy unit; the new energy unit and the conventional unit are used for power generation, and the transmission section is used for transmitting the power generated by the new energy unit and the conventional unit to another control area; characterized in that: The method comprises: The power regulation demand value of the control area is obtained according to the safety margin of the target transmission section, the actual power flow of the section and the section limit; the target transmission section is any transmission section in the control area; Obtaining a first adjustment power range of the new energy generator set according to the power adjustment demand value and the first adjustable power range of the new energy generator set; Obtaining a second adjustment power range of the conventional unit according to the power adjustment demand value and the second adjustable power range of the conventional unit; The regulation demand value is allocated according to the first regulation power range and the second regulation power range to obtain the section regulation power of the new energy unit and the conventional unit.

2. The power regulation method taking into account the AGC section as claimed in claim 1, characterized in that: The power regulation requirement value is obtained using the following formula: ARR RAW =P limit ·(1-δ%)-P real Among them, ARR RAW is the power regulation requirement value, δ is the safety margin, P real is the actual flow of the section, P limit is the section limit, P limit (1-δ%) is the cross-section target tidal current.

3. The power regulation method taking into account the AGC section as claimed in claim 1, characterized in that: The first adjustable power range includes a first maximum adjustable power value and a first minimum adjustable power value, and the step of obtaining the first adjustable power range of the new energy generator set according to the power adjustment requirement value and the first adjustable power range of the new energy generator set includes: A first upper limit adjustment power value and a first lower limit adjustment power value are obtained according to the power regulation demand value, the first maximum adjustable power value and the first minimum adjustable power value; the first upper limit adjustment power value and the first lower limit adjustment power value constitute the first adjustment power range.

4. The power regulation method taking into account the AGC section as claimed in claim 3, characterized in that: The first upper limit adjustment power value and the first lower limit adjustment power value are obtained by using the following formula: in, adjusting the power value for the first upper limit, is the first maximum adjustable power value, ARR RAW is the power regulation demand value, adjusting the power value for the first lower limit, is the first minimum adjustable power value.

5. The power regulation method taking into account the AGC section as claimed in claim 2, characterized in that: The method further comprises: The target transmission section is divided according to the section target flow, the actual flow and the section limit to obtain the type of the target transmission section; the type includes a normal area transmission section, an emergency area transmission section and an over-limit area transmission section; The active power regulation strategy of the control area is adjusted according to the type of the target transmission section.

6. The power regulation method taking into account the AGC section as claimed in claim 5, characterized in that: The step of dividing the target power transmission section according to the section target power flow of the section, the actual power flow of the section and the section limit to obtain the type of the target power transmission section includes: When the target power flow of the section is greater than the actual power flow of the section, the type of the target power transmission section is the normal area power transmission section; When the actual power flow of the section is greater than the target power flow of the section, and the actual power flow of the section is less than the limit of the section, the type of the target power transmission section is the emergency area power transmission section; When the actual power flow of the section is greater than the section limit, the type of the target transmission section is the cross-limit area transmission section.

7. The power regulation method taking into account the AGC section as claimed in claim 5, characterized in that: The adjusting the active power regulation strategy of the control area according to the type of the target power transmission section includes: When the type of the target transmission section is the normal area transmission section, all new energy stations and conventional units associated with the target transmission section are not coordinated and controlled; When the type of the target transmission section is the emergency zone transmission section, all conventional units associated with the target transmission section perform power adjustment in the direction of restoration of the target transmission section, and increase the active output value of the new energy station in the control area, and reduce the active output value of the conventional power plant; the conventional power plant is a non-new energy station; When the type of the target transmission section is the out-of-limit transmission section, the new energy station in the control area participates in section regulation.

8. A power regulation system taking into account the AGC section, characterized in that: The system comprises: a power regulation demand acquisition module, a first regulation power acquisition module, a second regulation power acquisition module and a power allocation module; The power regulation demand acquisition module is used to acquire the power regulation demand value of the control area according to the safety margin of the target transmission section, the actual power flow of the section and the section limit; the target transmission section is any transmission section in the control area; The first regulating power acquisition module is used to obtain the first regulating power range of the new energy generator set according to the power regulation demand value and the first adjustable power range of the new energy generator set; The second regulating power acquisition module is used to obtain the second regulating power range of the conventional unit according to the power regulation requirement value and the second adjustable power range of the conventional unit; The power allocation module is used to allocate the adjustment demand value according to the first adjustment power range and the second adjustment power range to obtain the section adjustment power of the new energy unit and the conventional unit.

9. A power regulation device taking into account an AGC section, comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

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