CN110190635B - Multi-power dispatching mechanism AGC unified frequency modulation control method, device and system supporting frequency modulation auxiliary service market - Google Patents
Multi-power dispatching mechanism AGC unified frequency modulation control method, device and system supporting frequency modulation auxiliary service market Download PDFInfo
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Abstract
The application relates to a multi-power dispatching mechanism AGC unified frequency modulation control method, a device, a system, computer equipment and a storage medium supporting a frequency modulation auxiliary service market. The method comprises the following steps: acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid; acquiring clear results of a unified frequency modulation auxiliary service market and operation information of AGC of each power dispatching mechanism, and acquiring regional control deviation of the AGC of each power dispatching mechanism participating in unified frequency modulation control according to frequency adjustment requirements, the clear results and frequency modulation data of the AGC of each power dispatching mechanism participating in unified frequency modulation control; and sending the regional control deviation to the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly increased frequency modulation requirement according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly increased frequency modulation requirement to a subordinate power generation unit according to a clear result. The method can quickly call the frequency modulation resources of the whole network.
Description
Technical Field
The present application relates to the field of power system control technologies, and in particular, to a method, an apparatus, a system, a computer device, and a storage medium for unified AGC frequency modulation control of multiple power scheduling mechanisms supporting a frequency modulation auxiliary service market.
Background
In modern power systems, a plurality of regional power grids are interconnected by tie lines to form a large power system. Although dc transmission is increasingly used, ac interconnected power systems are still very common. In a large-scale alternating-current interconnected power system, due to the fact that the coverage area of a power grid is large, the number of substations and power plants is large, and the distribution is wide, the power grid is generally divided into a plurality of regional power grids, for example, a power system in China, and a plurality of power dispatching mechanisms are arranged to carry out dispatching operation control on the power grid according to different grades and regions of national dispatching, network dispatching, provincial dispatching and local dispatching or according to general dispatching, provincial dispatching and local dispatching.
An alternating current power grid has a power grid frequency which is consistent with the whole power grid, in a large alternating current interconnected power system, a plurality of power dispatching mechanisms often control the active power and the frequency of the power grid, Automatic Generation Control (AGC) software is installed in the dispatching mechanisms, and the power grid frequency of the whole system is influenced by controlling the active power of a power plant generator set or energy storage equipment governed by the dispatching mechanisms. In order to ensure that the system frequency is stabilized within a specified range of rated frequency, improve the frequency quality and ensure the safe operation of a power grid, AGC of each scheduling mechanism in an alternating-current interconnected power system needs to be coordinated and controlled, the active balance of the power system is accurately ensured, and abnormal regulation such as overshoot and undershoot is avoided.
At present, the coordinated control of the inter-grid multi-power dispatching mechanism AGC generally adopts different parameters and different modes to cooperate with each other, that is, part of the AGC is used as a main frequency modulation area, the FFC (constant frequency control) mode is used to control the frequency, and other AGCs use the FTC (constant tie line exchange power control) mode or the TBC (tie line and frequency deviation control) mode to cooperate with the main frequency modulation area AGC by considering the inter-area tie line power variation, so as to jointly complete the frequency modulation task of the system. In the control mode, the AGC functions are relatively opposite and easy to implement, but the following disadvantages exist: parameters and the like between AGC of different modes are difficult to accurately set, so that each area can be adjusted repeatedly when the system frequency is disturbed, and the system frequency fluctuates for a long time; because frequency modulation resources of each region are unevenly distributed, when a frequency disturbance source is positioned in a region with less frequency modulation resources, the frequency modulation requirement needs to be transmitted to other regions through the power change of a connecting line, and high-quality frequency modulation resources of other regions cannot be quickly called; when a plurality of AGCs need to perform frequency modulation according to the requirements of a unified frequency modulation auxiliary service market, it is difficult to coordinate the frequency modulation amounts of the power generation units under each region.
Disclosure of Invention
In view of the foregoing, there is a need to provide a method, an apparatus, a system, a computer device and a storage medium for unified frequency modulation control of multiple power dispatching mechanisms AGC, which support the frequency modulation auxiliary service market.
A multi-power dispatching mechanism AGC unified frequency modulation control method supporting a frequency modulation auxiliary service market comprises the following steps:
acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
acquiring a clearing result of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, and acquiring regional control deviation of each power dispatching mechanism AGC participating in unified frequency modulation control according to the frequency regulation requirement, the clearing result and frequency modulation data of each power dispatching mechanism AGC participating in unified frequency modulation control when determining that the corresponding power dispatching mechanism AGC is in a coordinated control mode to participate in unified frequency modulation control based on the operation information;
and sending the regional control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly-increased frequency modulation requirement according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirement to a subordinate power generation unit according to the clear result.
A multi-power scheduler AGC unified fm control apparatus supporting fm assisted services market, the apparatus comprising:
the frequency regulation demand determination module is used for acquiring the real-time frequency of the power grid and determining the frequency regulation demand of the power grid according to the real-time frequency of the power grid;
the regional control deviation determining module is used for acquiring the clearing result of the unified frequency modulation auxiliary service market and the operation information of each power dispatching mechanism AGC, and acquiring the regional control deviation of each power dispatching mechanism AGC participating in unified frequency modulation control according to the frequency adjusting requirement, the clearing result and the frequency modulation data of each power dispatching mechanism AGC participating in unified frequency modulation control when determining that the corresponding power dispatching mechanism AGC participates in unified frequency modulation control under the coordination control mode based on the operation information;
and the regional control deviation sending module is used for sending the regional control deviation to the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly-increased frequency modulation demand according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation demand to a subordinate power generation unit according to the clear result.
A multi-power scheduler AGC unified fm control system supporting fm assisted service market, the system comprising: the system comprises a unified frequency modulation control center, a plurality of power dispatching mechanisms AGC and power generation units controlled by the power dispatching mechanisms AGC, wherein the power dispatching mechanisms AGC are in networking communication with the unified frequency modulation control center;
the unified frequency modulation control center calculates the regional control deviation of the AGC of each power dispatching mechanism according to the power grid frequency and the clearing result provided by the unified frequency modulation auxiliary service market;
the frequency modulation control mode of each power dispatching mechanism AGC is one of a coordination control mode and an independent control mode; the power dispatching mechanism AGC in a coordination control mode calculates the regional regulation requirement according to the regional control deviation issued by the unified frequency modulation control center and controls the power generation unit controlled by the power dispatching mechanism AGC based on the regional regulation requirement and the clearing result provided by the unified frequency modulation auxiliary service market; and the AGC in an independent control mode automatically calculates the regional regulation requirement according to the power grid frequency and controls the power generation unit controlled by the AGC according to the regional regulation requirement.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
acquiring a clearing result of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, and acquiring regional control deviation of each power dispatching mechanism AGC participating in unified frequency modulation control according to the frequency regulation requirement, the clearing result and frequency modulation data of each power dispatching mechanism AGC participating in unified frequency modulation control when determining that the corresponding power dispatching mechanism AGC is in a coordinated control mode to participate in unified frequency modulation control based on the operation information;
and sending the regional control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly-increased frequency modulation requirement according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirement to a subordinate power generation unit according to the clear result.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
acquiring a clearing result of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, and acquiring regional control deviation of each power dispatching mechanism AGC participating in unified frequency modulation control according to the frequency regulation requirement, the clearing result and frequency modulation data of each power dispatching mechanism AGC participating in unified frequency modulation control when determining that the corresponding power dispatching mechanism AGC is in a coordinated control mode to participate in unified frequency modulation control based on the operation information;
and sending the regional control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly-increased frequency modulation requirement according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirement to a subordinate power generation unit according to the clear result.
According to the multi-power dispatching mechanism AGC unified frequency modulation control method, device, system, computer equipment and storage medium supporting the frequency modulation auxiliary service market, each power dispatching mechanism AGC participates in unified frequency modulation control in a coordination control mode, so that each power dispatching mechanism AGC can better coordinate with each other according to a unified coordination strategy to share a frequency modulation task, when frequency disturbance occurs to a power grid, the whole grid frequency modulation resource can be quickly called, reciprocating adjustment of each AGC is reduced, the system frequency adjustment process is accelerated, and power generation units under each power dispatching mechanism AGC can share the frequency modulation task according to the bid-winning condition in the output result according to the requirement of the unified frequency modulation auxiliary service market.
Drawings
FIG. 1 is a block diagram of a multi-power dispatching mechanism AGC unified FM control system supporting FM auxiliary service market in one embodiment;
FIG. 2 is a flow diagram illustrating a method for controlling unified frequency modulation of multiple power dispatching mechanisms AGC in support of a frequency modulation auxiliary service market according to an embodiment;
FIG. 3 is a schematic flow chart illustrating an application of the AGC unified FM control method for multiple power dispatching mechanisms supporting FM auxiliary service markets to a unified FM control center according to an embodiment;
FIG. 4 is a flowchart illustrating a method for applying a unified FM control for multiple power dispatching mechanisms AGC to the power dispatching mechanisms AGC in support of an FM auxiliary service market according to an embodiment;
FIG. 5 is a block diagram of a multi-power dispatching mechanism AGC unified FM control apparatus supporting FM auxiliary service market in one embodiment;
FIG. 6 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, a multi-power dispatching mechanism AGC unified frequency modulation control system supporting a frequency modulation auxiliary service market is provided, and comprises a unified frequency modulation control center and a plurality of power dispatching mechanism AGC in networking communication with the unified frequency modulation control center; the unified frequency modulation control center calculates the regional control deviation of AGC of each power dispatching mechanism according to the power grid frequency and the clearing result provided by the unified frequency modulation auxiliary service market; the frequency modulation control mode of each power dispatching mechanism AGC is one of a coordination control mode and an independent control mode; the method comprises the steps that an AGC (automatic gain control) mechanism in a coordinated control mode calculates the regional regulation requirement according to regional control deviation issued by a unified frequency modulation control center, and controls a power generation unit controlled by the AGC mechanism based on the regional regulation requirement and a clearing result provided by a unified frequency modulation auxiliary service market; and the AGC in an independent control mode automatically calculates the regional regulation requirement according to the power grid frequency and controls the power generation unit controlled by the AGC according to the regional regulation requirement.
In one embodiment, as shown in fig. 1, a unified fm control system for multiple power dispatching authorities AGC supporting an fm auxiliary service market is provided, the system includes a unified fm control center (hereinafter, UFC) and multiple power dispatching authorities AGC (in the figure, the number of AGCs is n, and n is an integer greater than or equal to 2), and a unified fm auxiliary service market is added.
Taking an example of a multi-dispatching-mechanism alternating-current interconnected power grid consisting of one main dispatching and a plurality of provincial dispatching, unified frequency modulation control software can be added in an operation monitoring system (OCS) of the main dispatching, so that a unified frequency modulation control center of the power grid is established. The function of the unified fm control software may be based on the SCADA (supervisory control and data acquisition) function of the OCS system to interact with the AGC and fm assisted services market networking. The unified frequency modulation control center can acquire the real-time frequency of the power grid and the measurement data sent by each AGC through the SCADA function, calculate the area control deviation (ACE) to be born by each AGC participating in unified frequency modulation, and forward the ACE to the corresponding scheduling mechanism in the form of SCACA analog quantity.
In each power dispatching mechanism AGC, a control area corresponding to each dispatching mechanism is established, all power generating units which are managed by the dispatching mechanism and can be called are contained under the control area, and the power generating units can be generator sets or energy storage equipment. And each AGC can control the subordinate power generation units according to data issued by the UFC and clear results provided by the frequency modulation auxiliary service market.
In the frequency modulation auxiliary service market, each power dispatching mechanism AGC added to the interconnected power grid is willing to add a power generation unit for providing frequency modulation auxiliary service, the frequency modulation auxiliary service market receives frequency modulation statistical data of each AGC, including quotation information of each power generation unit, and can provide functions of unified information release, price declaration, pre-clearing in the day, checking, settlement and the like for the power generation units, and before each clearing time period begins, the frequency modulation auxiliary service market exports clearing results of the whole network in a file form of specified names and formats and transmits the clearing results to the UFC and each AGC. The output result includes information such as the winning bid status of each power generation unit under the AGC of each power scheduling mechanism and the winning bid amount of the winning bid power generation unit.
The multi-power dispatching mechanism AGC unified frequency modulation control system supporting the frequency modulation auxiliary service market can enable a plurality of power dispatching mechanisms AGC in an alternating current interconnected power system to coordinate and modulate frequency jointly, and enable power generation units subordinate to the plurality of power dispatching mechanisms AGC to bear frequency modulation tasks according to standard conditions of the power generation units according to the requirements of the unified frequency modulation auxiliary service market.
The multi-power dispatching mechanism AGC unified frequency modulation control method supporting the frequency modulation auxiliary service market can be applied to a multi-power dispatching mechanism AGC unified frequency modulation control system supporting the frequency modulation auxiliary service market shown in figure 1. In one embodiment, as shown in fig. 2, a method for controlling multiple power dispatching authorities AGC for unified frequency modulation is provided, which is described by taking the method as an example for the UFC in fig. 1, and includes the following steps S202 to S206.
S202, acquiring the real-time frequency of the power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
s204, obtaining the clearing result of the unified frequency modulation auxiliary service market and the operation information of the AGC of each power dispatching mechanism, and when determining that the corresponding AGC of the power dispatching mechanism participates in unified frequency modulation control in a coordinated control mode based on the operation information, obtaining the regional control deviation of the AGC of each power dispatching mechanism participating in the unified frequency modulation control according to the frequency regulation requirement, the clearing result and the frequency modulation data of the AGC of each power dispatching mechanism participating in the unified frequency modulation control;
and S206, sending the regional control deviation to the corresponding power dispatching mechanism AGC participating in the unified frequency modulation control, acquiring a regional newly-increased frequency modulation requirement according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in the unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirement to a subordinate power generation unit according to a clear result.
According to the multi-power dispatching mechanism AGC unified frequency modulation control method supporting the frequency modulation auxiliary service market, each power dispatching mechanism AGC participates in unified frequency modulation control in a coordination control mode, so that each power dispatching mechanism AGC can better coordinate with each other according to a unified coordination strategy to share a frequency modulation task, when a power grid generates frequency disturbance, the whole grid frequency modulation resource can be quickly called, the reciprocating adjustment of each AGC is reduced, the system frequency adjustment process is accelerated, and the power generation units under each power dispatching mechanism AGC can share the frequency modulation task according to the winning bid condition in the clearing result according to the requirements of the unified frequency modulation auxiliary service market.
In one embodiment, the UFC converts the time scale of its local time within the day into seconds, and sends the seconds as its refresh time to each power dispatching mechanism AGC in real time. In one embodiment, the UFC further issues the operating status thereof to each power dispatching mechanism AGC in real time, and when an abnormality occurs or a human quit occurs, informs each power dispatching mechanism AGC through the issued operating status.
In one embodiment, the AGC can upload its unified fm status, refresh time, and unmodulated amount to the UFC in real time. When the AGC is in the coordination control mode, the unified frequency modulation state of the AGC is judged to be a controllable state, and when the AGC is in the independent control mode, the unified frequency modulation state of the AGC is judged to be an uncontrollable state. The AGC may convert its time-of-day of the local time to seconds as its refresh time. The AGC can also count the unadjusted amount according to the completion condition of the control instruction of the subordinate power generation unit, wherein the unadjusted amount refers to the total amount of the active power control instruction issued by each power generation unit subordinate to the AGC and responding to the regional frequency modulation requirement for the last time and is not completed at the current moment, and specifically refers to unadjusted power.
In one embodiment, when the AGC is switched to a pause or stop state due to an abnormality, or the received running state issued by the UFC is abnormal or exits, or the deviation between the refresh time of the AGC and the refresh time issued by the UFC is greater than or equal to a set value, the AGC automatically switches to an independent control mode to perform frequency modulation. Therefore, when the AGC in the system is abnormal or the UFC is abnormal, the AGC can automatically switch to an independent control mode, and continuously participate in frequency adjustment according to the frequency modulation parameters in the preset independent control mode, so that the system frequency is ensured to be continuously stable, and the system has good safety and reliability. The local user can also manually set the AGC to be put into or quit the coordination control mode according to the conditions, and the AGC is put into the independent control mode when the AGC is quitted from the coordination control mode.
In one embodiment, the UFC obtains the operation information of each power dispatching mechanism AGC, including obtaining a uniform frequency modulation state and an intra-day time scale of each power dispatching mechanism AGC, and when the uniform frequency modulation state of the AGC is a controllable state and a deviation between the intra-day time scale of the AGC and the intra-day time scale of the UFC is smaller than a set value, determining that the AGC is in a coordinated control mode to participate in the uniform frequency modulation control.
In one embodiment, the UFC obtains a real-time frequency of the power grid, and determines a frequency adjustment requirement of the power grid according to the real-time frequency of the power grid, where the frequency adjustment requirement of the power grid can be calculated according to the following formula:
ACEf＝10B(f-f0)
wherein, ACEfRepresenting the frequency regulation demand of the grid, f representing real-time measurement data of the grid frequency, f0Representing the nominal frequency and B the frequency deviation factor.
In one embodiment, the apportionment coefficients of the power dispatching mechanisms AGC can be determined based on the clearing result of the unified frequency modulation auxiliary service market. The clearing result of the frequency modulation auxiliary service market comprises the bid-winning condition of each power generation unit subordinate to each power dispatching mechanism AGC and the bid-winning capacity of the bid-winning power generation unit, and can further comprise the total bid-winning capacity of each power dispatching mechanism and the proportion of the total bid-winning capacity of each power dispatching mechanism to the total bid-winning capacity of the whole network.
Determining AGC (automatic gain control) allocation coefficients of each power dispatching mechanism based on the clearing result of the unified frequency modulation auxiliary service market, and specifically comprising the following steps of: calculating the sum of the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism and the sum of the bid amounts of all the bid winning power generation units under the AGC of all the power dispatching mechanisms based on the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism; and determining the ratio of the sum of the bid amounts of all the bid-winning generating units under the AGC of each power dispatching mechanism to the sum of the bid amounts of all the bid-winning generating units under the AGC of all the power dispatching mechanisms as the allocation coefficient of each corresponding power dispatching mechanism AGC.
Specifically, the sum of bid amounts of all bid winning power generation units under each power dispatching mechanism AGC can be calculated according to the following formula:
wherein j represents the number of the AGC of the power dispatching mechanism, CjDenotes the jth power dispatching mechanism AGC (denoted as AGC)j) Sum of successful bid capacities of all subordinate successful bid power generation units, and k represents AGCjThe serial number of the power generation unit in the subordinate,
indicating AGCjAnd the winning bid capacity of the kth winning power generation unit in the subordinate winning bid power generation units.
AGCjCoefficient of division βjCan be calculated according to the following formula:
therein, sigmajCjRepresents the sum of the bid amounts of all the winning bid power generation units under the control of all the power scheduling mechanisms AGC.
In one embodiment, the frequency modulation data for each power scheduling mechanism AGC includes an unadjusted amount. The UFC may obtain the area control deviation of each power scheduling mechanism AGC participating in the unified frequency modulation control according to the frequency adjustment requirement, the apportionment coefficient and the unadjusted amount of each power scheduling mechanism AGC participating in the unified frequency modulation control, and specifically includes the following steps: calculating the sum of the unadjusted quantities of all the power dispatching mechanisms AGC participating in the unified frequency modulation control; calculating the sum of the unadjusted quantity and the sum of the frequency adjustment requirements to obtain a first sum; and calculating the product of the first sum and the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control to obtain the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control.
Specifically, the zone control deviation may be calculated according to the following formula:
wherein i represents the serial number of the power dispatching mechanism AGC participating in the unified frequency modulation control,
power dispatching mechanism AGC (marked as AGC) for representing ith participating in unified frequency modulation controli) Zone control deviation of βiIndicating AGCiThe coefficient of the division of (a) into (b),
indicating AGCiIs not adjusted by the amount of (a) to (b),
and represents the sum of the unregulated amounts of all the power dispatching mechanisms AGC participating in the unified frequency modulation control.
In one embodiment, after the UFC issues the area control deviation to the corresponding power scheduling mechanism AGC participating in unified frequency modulation control, the AGC calculates the area new frequency modulation requirement according to the area control deviation, the unadjusted amount thereof, and the coordination control mode parameter. The method specifically comprises the following steps: and calculating a difference value between the area control deviation and the unadjusted quantity, performing proportional control operation and integral control operation on the difference value, and acquiring the area newly added frequency modulation requirement of the AGC of the power dispatching mechanism based on the results of the proportional control operation and the integral control operation and the unadjusted quantity.
Specifically, the newly added frequency modulation requirement of the AGC region of each power scheduling mechanism participating in the unified frequency modulation control can be calculated according to the following formula:
wherein, ARRiIndicating AGCiNew frequency modulation requirement of region，KpIndicating AGCiGain in the proportional control element, KiIndicating AGCiGain in the integral control link. When the frequency deviation of the power grid is in different ranges, different Ks can be usedpAnd Ki，KpTypically close to 1. After the new frequency modulation requirement of the region is obtained, AGCiARR is controlled in its control periodiAnd issuing the distribution strategy to subordinate power generation units according to a certain distribution strategy, wherein the distribution strategy can select the existing AGC distribution strategy.
In one embodiment, each AGC can also control its subordinate power generation units based on the results of the rollout provided by the fm auxiliary service market. Specifically, when the clearance time period specified in the clearance result begins, the winning power generation unit is set to be in the default frequency modulation mode, and the non-winning power generation unit is set to be in the default non-frequency modulation mode. And for the winning power generation unit in the clearing period, in the process of controlling the winning power generation unit, the deviation between the active power and the real-time planned power is limited to be not more than the winning capacity of the winning power generation unit given by the clearing result.
Therefore, each power dispatching mechanism AGC can carry out frequency adjustment according to the clearing result of the unified frequency modulation auxiliary service market, and the power generating units under the power dispatching mechanisms AGC can fairly undertake the frequency modulation task according to the successful bidding condition of the power generating units in the frequency modulation auxiliary service market.
In one embodiment, when the AGC is in the independent control mode, the AGC can calculate the regional adjustment requirement according to the power grid frequency monitored in real time and send the regional adjustment requirement to the power generation unit for control. The area adjustment requirement calculation method and allocation strategy can follow the existing AGC strategy.
In one embodiment, a method of controlling UFC includes the following steps S301 to S307.
S301, the clear file is analyzed.
Before each clearance time period starts, the UFC needs to read the clearance file transmitted by the fm auxiliary service market in advance, and the reading time can be according to a preset cycle. The file name of the closeout file may be uniformly specified as a character string containing the closeout period information. In the clearing file, a clearing time period, a total bid amount of each power dispatching mechanism, a proportion of the total bid amount to the total bid amount of the whole network, a bid amount and a bid amount of a power generation unit under each power dispatching mechanism AGC are usually given, and an allocation coefficient of each power dispatching mechanism AGC can also be given. And after reading the information from the clearing files, the UFC performs rationality check on the clearing results, and if the clearing results are abnormal, alarms and informs related operators.
S302, whether the clear file meets the operation condition is confirmed.
After the UFC completes the resolution of the clearing file, a confirmation interface can be provided to warn a master-tune operator to confirm, the information needing to be confirmed in the clearing result comprises the bid-winning condition of the power generation unit and the total bid-winning condition of the power dispatching mechanism, the operator can judge whether the clearing result meets the operation condition according to the current operation requirement of the power grid, if not, the operator can feed back to the frequency modulation auxiliary service market to require clearing again and provide a new clearing result.
And S303, judging whether the UFC state is the running state or not.
The operation period of the UFC can be set to be every second, and when the frequency measurement monitored by the UFC has numerical value range and other abnormalities, the UFC automatically exits the operation state to avoid error regulation. When the UFC exits the running state, informing each AGC by UFC state remote signaling sent to each AGC, and judging by each AGC according to the remote signaling to switch into an independent frequency modulation control mode. And when the UFC is in a running state, entering S304, otherwise exiting the running period.
S304, acquiring the real-time frequency of the power grid, and calculating the real-time frequency regulation requirement according to the real-time frequency of the power grid. For a specific calculation method, reference may be made to the foregoing embodiments, which are not described herein again.
S305, judging whether each AGC participates in the unified frequency modulation control.
And regarding each AGC, when the unified frequency modulation state sent by the AGC is a controllable state and the deviation of the time scale sent by the AGC and the time scale in the UFC local day is smaller than a set value, considering the AGC to participate in the unified frequency modulation control, or considering the AGC not to participate in the unified frequency modulation control.
And S306, calculating the area control deviation of each AGC participating in the unified frequency modulation control. For a specific calculation method, reference may be made to the foregoing embodiments, which are not described herein again.
And S307, sending the calculated area control deviation to the corresponding AGC. The issuing mode may be that the area control deviation is output to the SCADA system as an analog quantity, and then forwarded to the corresponding power scheduling mechanism AGC according to 104 specifications through the scheduling data network.
In one embodiment, the AGC includes the following steps S401 to S410 at each execution cycle.
S401, judging whether the AGC is in a coordination control mode. When the AGC is set to the coordination control mode, go to step S402; otherwise, the process proceeds to step S408.
S402, judging whether the UFC is in the running state. If the received UFC status is running, go to step S403; otherwise, switching to an automatic AGC (automatic gain control) set to be in an independent control mode, and then returning to the step S401;
and S403, judging whether the AGC normally operates. If the AGC is in a normal operation state, the step S404 is entered; and if the AGC enters an abnormal operation state due to the reasons of abnormal key measurement such as frequency and the like, the regional control deviation exceeds a limit value and the like, an alarm is given out, and the AGC exits from operation.
S404, counting the sum of the unadjusted amount of each subordinate power generation unit, and sending the sum to the UFC.
And S405, calculating an area newly added frequency modulation requirement (ARR) by using the coordination control mode parameter and the Area Control Error (ACE) issued by the UFC. For a specific calculation method, reference may be made to the foregoing embodiments, which are not described herein again.
S406, determines whether the time is the start time of the out-of-date period. At the beginning of the emptying period, the method goes to step S407, and then goes to step S409; otherwise, the process proceeds to step S408, and then to step S409.
And S407, performing PLC mode conversion and bandwidth control.
And when the current time is the starting time of the clearing time period, performing mode conversion and bandwidth control setting on the subordinate power generation units PLC according to the winning bid condition in the clearing result. And for the winning power generation unit, setting the corresponding PLC into a default frequency modulation mode, enabling the winning power generation unit to provide frequency modulation service in the period of the clear time, and meanwhile, setting the adjustment bandwidth of the winning power generation unit as the winning capacity. And for the generating units which do not win the bid, setting the corresponding PLC to be in a non-default non-frequency modulation mode, so that the generating units do not provide frequency modulation service in the period of clear time and only operate along with the planned value. The bandwidth adjustment strategy is that when the AGC controls the PLC, the deviation between the real-time active power of the PLC and the planned output power is not larger than the set adjustment bandwidth.
And S408, calculating the area control deviation and the area newly added frequency modulation requirement by using the independent control mode parameters. The calculation method herein can follow the existing strategy of AGC.
And S409, judging whether the current time enters a control period. If yes, go to step S410; otherwise, ending the execution cycle.
And S410, calculating a control instruction of the power generation unit according to the newly increased frequency modulation requirement of the region and the planned value of the unit, and issuing the control instruction according to the requirement. This step may also use the AGC existing strategy. Thereafter, the present execution cycle is ended.
It should be understood that although the various steps in the flow charts of fig. 2-4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided a multi-power dispatching mechanism AGC unified fm control apparatus supporting fm auxiliary service market, comprising: a frequency adjustment requirement determination module 510, a zone control deviation determination module 520, and a zone control deviation sending module 530, wherein:
and a frequency regulation demand determining module 510, configured to obtain a real-time frequency of the power grid, and determine a frequency regulation demand of the power grid according to the real-time frequency of the power grid.
And a regional control deviation determining module 520, configured to obtain a clearing result of the unified frequency modulation auxiliary service market and operation information of each power scheduling mechanism AGC, and when determining that the corresponding power scheduling mechanism AGC is in the coordinated control mode and participates in the unified frequency modulation control based on the operation information, obtain a regional control deviation of each power scheduling mechanism AGC participating in the unified frequency modulation control according to the frequency adjustment requirement, the clearing result, and frequency modulation data of each power scheduling mechanism AGC participating in the unified frequency modulation control.
And the area control deviation sending module 530 is configured to send the area control deviation to the corresponding power scheduling mechanism AGC participating in the unified frequency modulation control, obtain an area newly-added frequency modulation requirement according to the area control deviation by the corresponding power scheduling mechanism AGC participating in the unified frequency modulation control, and distribute the area newly-added frequency modulation requirement to a subordinate power generation unit according to a clear result.
In one embodiment, the operation information of the power scheduling mechanism AGC includes: unifying the frequency modulation state and the refreshing time, and determining that the power dispatching mechanism AGC participates in unified frequency modulation control in a coordination control mode when the unified frequency modulation state of the power dispatching mechanism AGC is a controllable state and the deviation between the refreshing time of the power dispatching mechanism AGC and the local refreshing time is less than a set value; and when the operation of the AGC of the power dispatching mechanism is abnormal, or the local operation is abnormal, or the deviation between the refreshing time of the AGC of the power dispatching mechanism and the local refreshing time is larger than or equal to a set value, determining that the AGC of the power dispatching mechanism does not participate in unified frequency modulation control in an independent control mode.
In one embodiment, the frequency modulation data of each power scheduling mechanism AGC includes an unadjusted amount, where the unadjusted amount is a total amount of active power control commands issued by each power generation unit under the power scheduling mechanism AGC and responding to the regional frequency modulation requirement last time and not completed at the current time, and the regional control deviation determining module 520 is further configured to: determining the allocation coefficient of AGC of each power dispatching mechanism participating in unified frequency modulation control based on the clearing result; and obtaining the regional control deviation of the AGC of each power dispatching mechanism participating in the unified frequency modulation control according to the frequency adjustment requirement, the sharing coefficient and the unadjusted quantity of the AGC of each power dispatching mechanism participating in the unified frequency modulation control.
In one embodiment, the clearing the results includes: the area control deviation determining module 520 is further configured to: calculating the sum of the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism and the sum of the bid amounts of all the bid winning power generation units under the AGC of all the power dispatching mechanisms based on the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism; and determining the ratio of the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC participating in the unified frequency modulation control to the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC as the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control.
In one embodiment, the zone control deviation determination module 520 is further configured to: calculating the sum of the unadjusted quantities of all the power dispatching mechanisms AGC participating in the unified frequency modulation control; calculating the sum of the unadjusted quantity and the sum of the frequency adjustment requirements to obtain a first sum; and calculating the product of the first sum and the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control to obtain the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control.
In one embodiment, the zone control offset sending module 530 is further configured to: the method comprises the steps of sending a region control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, calculating a difference value between the region control deviation and an unadjusted quantity by the corresponding power dispatching mechanism AGC participating in the unified frequency modulation control, carrying out proportional control operation and integral control operation on the difference value, obtaining a region newly increased frequency modulation requirement of the power dispatching mechanism AGC based on results of the proportional control operation and the integral control operation and the unadjusted quantity, and distributing the region newly increased frequency modulation requirement to a subordinate power generation unit according to a clearing result. Wherein, according to the clear result, the newly increased frequency modulation requirement of the region is distributed to the subordinate power generation units, which may be specifically: when the clearing time period specified by the clearing result begins, setting the winning bid power generation unit as a frequency modulation mode, and setting the uncommitted bid power generation unit as a non-frequency modulation mode; and distributing the newly increased frequency modulation requirement of the region to the winning power generation unit, and limiting the deviation between the active power and the planned value of the winning power generation unit to be less than or equal to the winning capacity of the winning power generation unit.
For specific limitations of the multi-power dispatching mechanism AGC unified fm control apparatus supporting the fm auxiliary service market, reference may be made to the above limitations on the multi-power dispatching mechanism AGC unified fm control method supporting the fm auxiliary service market, and details thereof are not repeated herein. All or part of each module in the multi-power dispatching mechanism AGC unified frequency modulation control device supporting the frequency modulation auxiliary service market can be realized by software, hardware and combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 6. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a multiple power scheduler AGC unified FM control method that supports FM auxiliary service markets.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
acquiring clear results of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, and acquiring regional control deviation of each power dispatching mechanism AGC participating in unified frequency modulation control according to frequency regulation requirements, clear results and frequency modulation data of each power dispatching mechanism AGC participating in unified frequency modulation control when determining that the corresponding power dispatching mechanism AGC participates in the unified frequency modulation control under a coordination control mode based on the operation information;
and sending the regional control deviation to the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring regional newly-increased frequency modulation requirements according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirements to subordinate power generation units according to a clear result.
In one embodiment, the operation information of the power scheduling mechanism AGC includes: unifying the frequency modulation state and the refreshing time, and realizing the following steps when the processor executes the computer program: when the unified frequency modulation state of the power dispatching mechanism AGC is a controllable state and the deviation between the refreshing time of the power dispatching mechanism AGC and the local refreshing time is smaller than a set value, determining that the power dispatching mechanism AGC participates in unified frequency modulation control in a coordination control mode; and when the operation of the AGC of the power dispatching mechanism is abnormal, or the local operation is abnormal, or the deviation between the refreshing time of the AGC of the power dispatching mechanism and the local refreshing time is larger than or equal to a set value, determining that the AGC of the power dispatching mechanism does not participate in unified frequency modulation control in an independent control mode.
In one embodiment, the frequency modulation data of each power scheduling mechanism AGC includes an unadjusted amount, where the unadjusted amount is a total amount of active power control instructions issued by each power generation unit under the power scheduling mechanism AGC and responding to the regional frequency modulation requirement last time and not completed at the current time, and the processor further implements the following steps when executing the computer program:
determining the allocation coefficient of AGC of each power dispatching mechanism participating in unified frequency modulation control based on the clearing result;
and obtaining the regional control deviation of the AGC of each power dispatching mechanism participating in the unified frequency modulation control according to the frequency adjustment requirement, the sharing coefficient and the unadjusted quantity of the AGC of each power dispatching mechanism participating in the unified frequency modulation control.
In one embodiment, the clearing the results includes: the processor executes the computer program and further realizes the following steps:
calculating the sum of the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism and the sum of the bid amounts of all the bid winning power generation units under the AGC of all the power dispatching mechanisms based on the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism;
and determining the ratio of the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC participating in the unified frequency modulation control to the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC as the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control.
In one embodiment, the processor, when executing the computer program, further performs the steps of: calculating the sum of the unadjusted quantities of all the power dispatching mechanisms AGC participating in the unified frequency modulation control; calculating the sum of the unadjusted quantity and the sum of the frequency adjustment requirements to obtain a first sum; and calculating the product of the first sum and the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control to obtain the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control.
In one embodiment, the processor, when executing the computer program, further performs the steps of: the method comprises the steps of sending a region control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, calculating a difference value between the region control deviation and an unadjusted quantity by the corresponding power dispatching mechanism AGC participating in the unified frequency modulation control, carrying out proportional control operation and integral control operation on the difference value, obtaining a region newly increased frequency modulation requirement of the power dispatching mechanism AGC based on results of the proportional control operation and the integral control operation and the unadjusted quantity, and distributing the region newly increased frequency modulation requirement to a subordinate power generation unit according to a clearing result. Wherein, according to the clear result, the newly increased frequency modulation requirement of the region is distributed to the subordinate power generation units, which may be specifically: when the clearing time period specified by the clearing result begins, setting the winning bid power generation unit as a frequency modulation mode, and setting the uncommitted bid power generation unit as a non-frequency modulation mode; and distributing the newly increased frequency modulation requirement of the region to the winning power generation unit, and limiting the deviation between the active power and the planned value of the winning power generation unit to be less than or equal to the winning capacity of the winning power generation unit.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
acquiring clear results of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, and acquiring regional control deviation of each power dispatching mechanism AGC participating in unified frequency modulation control according to frequency regulation requirements, clear results and frequency modulation data of each power dispatching mechanism AGC participating in unified frequency modulation control when determining that the corresponding power dispatching mechanism AGC participates in the unified frequency modulation control under a coordination control mode based on the operation information;
and sending the regional control deviation to the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring regional newly-increased frequency modulation requirements according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirements to subordinate power generation units according to a clear result.
In one embodiment, the operation information of the power scheduling mechanism AGC includes: unifying the frequency modulation state and the refresh time, the computer program when executed by the processor further implementing the steps of: when the unified frequency modulation state of the power dispatching mechanism AGC is a controllable state and the deviation between the refreshing time of the power dispatching mechanism AGC and the local refreshing time is smaller than a set value, determining that the power dispatching mechanism AGC participates in unified frequency modulation control in a coordination control mode; and when the operation of the AGC of the power dispatching mechanism is abnormal, or the local operation is abnormal, or the deviation between the refreshing time of the AGC of the power dispatching mechanism and the local refreshing time is larger than or equal to a set value, determining that the AGC of the power dispatching mechanism does not participate in unified frequency modulation control in an independent control mode.
In one embodiment, the frequency modulation data of each power scheduling mechanism AGC includes an unadjusted amount, where the unadjusted amount is a total amount of active power control instructions issued by each power generation unit under the power scheduling mechanism AGC and responding to the regional frequency modulation requirement for the last time, and the current time is not completed yet, and when being executed by the processor, the computer program further implements the following steps:
determining the allocation coefficient of AGC of each power dispatching mechanism participating in unified frequency modulation control based on the clearing result;
and obtaining the regional control deviation of the AGC of each power dispatching mechanism participating in the unified frequency modulation control according to the frequency adjustment requirement, the sharing coefficient and the unadjusted quantity of the AGC of each power dispatching mechanism participating in the unified frequency modulation control.
In one embodiment, the clearing the results includes: the computer program further realizes the following steps when executed by the processor, according to the bid-winning condition of each power generation unit subordinate to each power dispatching mechanism AGC and the bid-winning capacity of the bid-winning power generation unit:
calculating the sum of the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism and the sum of the bid amounts of all the bid winning power generation units under the AGC of all the power dispatching mechanisms based on the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism;
and determining the ratio of the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC participating in the unified frequency modulation control to the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC as the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control.
In one embodiment, the processor, when executing the computer program, further performs the steps of: calculating the sum of the unadjusted quantities of all the power dispatching mechanisms AGC participating in the unified frequency modulation control; calculating the sum of the unadjusted quantity and the sum of the frequency adjustment requirements to obtain a first sum; and calculating the product of the first sum and the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control to obtain the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control.
In one embodiment, the computer program when executed by the processor further performs the steps of: the method comprises the steps of sending a region control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, calculating a difference value between the region control deviation and an unadjusted quantity by the corresponding power dispatching mechanism AGC participating in the unified frequency modulation control, carrying out proportional control operation and integral control operation on the difference value, obtaining a region newly increased frequency modulation requirement of the power dispatching mechanism AGC based on results of the proportional control operation and the integral control operation and the unadjusted quantity, and distributing the region newly increased frequency modulation requirement to a subordinate power generation unit according to a clearing result. Wherein, according to the clear result, the newly increased frequency modulation requirement of the region is distributed to the subordinate power generation units, which may be specifically: when the clearing time period specified by the clearing result begins, setting the winning bid power generation unit as a frequency modulation mode, and setting the uncommitted bid power generation unit as a non-frequency modulation mode; and distributing the newly increased frequency modulation requirement of the region to the winning power generation unit, and limiting the deviation between the active power and the planned value of the winning power generation unit to be less than or equal to the winning capacity of the winning power generation unit.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A multi-power dispatching mechanism AGC unified frequency modulation control method supporting a frequency modulation auxiliary service market comprises the following steps:
acquiring the real-time frequency of a power grid, and determining the frequency regulation requirement of the power grid according to the real-time frequency of the power grid;
acquiring clearing results of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, determining sharing coefficients of each power dispatching mechanism AGC participating in unified frequency modulation control based on the clearing results when determining that the corresponding power dispatching mechanism AGC is in a coordinated control mode to participate in unified frequency modulation control based on the operation information, and acquiring regional control deviations of each power dispatching mechanism AGC participating in unified frequency modulation control according to the frequency regulation requirements, the sharing coefficients and the unregulated quantity of each power dispatching mechanism AGC participating in unified frequency modulation control;
and sending the regional control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly-increased frequency modulation requirement according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation requirement to a subordinate power generation unit according to the clear result.
2. The method of claim 1, wherein the operation information of the power scheduling mechanism AGC comprises: unifying the frequency modulation state and the refresh time, wherein the frequency modulation state and the refresh time comprise any one of the following two items:
when the unified frequency modulation state is a controllable state and the deviation between the refreshing time and the local refreshing time is smaller than a set value, determining that the corresponding AGC (automatic gain control) of the power dispatching mechanism participates in unified frequency modulation control in a coordination control mode;
and when the operation of the AGC of the power dispatching mechanism is abnormal, or the local operation is abnormal, or the deviation between the refreshing time and the local refreshing time is larger than or equal to the set value, determining that the AGC of the corresponding power dispatching mechanism does not participate in unified frequency modulation control in an independent control mode.
3. The method of claim 1, wherein the closeout result comprises: the power dispatching mechanism AGC belongs to the bid-winning condition of each power generation unit and the bid-winning capacity of the bid-winning power generation unit;
determining the apportionment coefficients of the AGC of each power dispatching mechanism participating in the unified frequency modulation control based on the clearing result, comprising the following steps:
calculating the sum of the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism and the sum of the bid amounts of all the bid winning power generation units under the AGC of all the power dispatching mechanisms based on the bid amounts of all the bid winning power generation units under the AGC of each power dispatching mechanism;
and determining the ratio of the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC participating in the unified frequency modulation control to the sum of the bid amounts of all the bid-winning power generation units under the power dispatching mechanisms AGC as the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control.
4. The method according to claim 1, wherein obtaining the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control according to the frequency adjustment requirement, the share coefficient and the unadjusted amount of each power dispatching mechanism AGC participating in the unified frequency modulation control comprises:
calculating the sum of the unadjusted quantities of all the power dispatching mechanisms AGC participating in the unified frequency modulation control;
calculating the sum of the unadjusted quantity and the sum of the frequency adjustment requirements to obtain a first sum;
and calculating the product of the first sum and the allocation coefficient of each power dispatching mechanism AGC participating in the unified frequency modulation control to obtain the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control.
5. The method according to claim 1, wherein the sending the area control deviation to a corresponding power scheduling mechanism AGC participating in unified frequency modulation control, obtaining an area newly added frequency modulation requirement according to the area control deviation by the corresponding power scheduling mechanism AGC participating in unified frequency modulation control, and distributing the area newly added frequency modulation requirement to a subordinate power generation unit according to the clearing result comprises:
sending the area control deviation to a corresponding power dispatching mechanism AGC participating in unified frequency modulation control, calculating a difference value between the area control deviation and an unadjusted quantity by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, performing proportional control operation and integral control operation on the difference value, obtaining an area newly increased frequency modulation requirement of the power dispatching mechanism AGC based on results of the proportional control operation and the integral control operation and the unadjusted quantity, and distributing the area newly increased frequency modulation requirement to a subordinate power generation unit according to a clearing result;
wherein, according to the clearing result, the newly added frequency modulation requirement of the region is distributed to the subordinate power generation units, and the method comprises the following steps:
when the clearing time period specified by the clearing result begins, setting the winning bid power generation unit to be in a frequency modulation mode, and setting the uncommitted bid power generation unit to be in a non-frequency modulation mode;
and distributing the newly increased regional frequency modulation requirement to the winning power generation unit, and limiting the deviation between the active power and the planned value of the winning power generation unit to be less than or equal to the winning capacity of the winning power generation unit.
6. A multi-power scheduling mechanism AGC unified fm control apparatus supporting fm assisted service market, the apparatus comprising:
the frequency regulation demand determination module is used for acquiring the real-time frequency of the power grid and determining the frequency regulation demand of the power grid according to the real-time frequency of the power grid;
the regional control deviation determining module is used for acquiring a clearing result of a unified frequency modulation auxiliary service market and operation information of each power dispatching mechanism AGC, determining a sharing coefficient of each power dispatching mechanism AGC participating in unified frequency modulation control based on the clearing result when determining that the corresponding power dispatching mechanism AGC participates in the unified frequency modulation control under a coordination control mode based on the operation information, and acquiring the regional control deviation of each power dispatching mechanism AGC participating in the unified frequency modulation control according to the frequency adjustment requirement, the sharing coefficient and the unadjusted amount of each power dispatching mechanism AGC participating in the unified frequency modulation control;
and the regional control deviation sending module is used for sending the regional control deviation to the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, acquiring a regional newly-increased frequency modulation demand according to the regional control deviation by the corresponding power dispatching mechanism AGC participating in unified frequency modulation control, and distributing the regional newly-increased frequency modulation demand to a subordinate power generation unit according to the clear result.
7. A multi-power scheduling mechanism AGC unified fm control system that supports fm assisted service market, the system comprising: the system comprises a unified frequency modulation control center and a plurality of power dispatching mechanisms AGC which are in networking communication with the unified frequency modulation control center;
the unified frequency modulation control center calculates the regional control deviation of the AGC of each power dispatching mechanism according to the power grid frequency and the clearing result provided by the unified frequency modulation auxiliary service market;
the frequency modulation control mode of each power dispatching mechanism AGC is one of a coordination control mode and an independent control mode; the power dispatching mechanism AGC in a coordination control mode calculates the regional regulation requirement according to the regional control deviation issued by the unified frequency modulation control center and controls the power generation unit controlled by the power dispatching mechanism AGC based on the regional regulation requirement and the clearing result provided by the unified frequency modulation auxiliary service market; and the AGC in an independent control mode automatically calculates the regional regulation requirement according to the power grid frequency and controls the power generation unit controlled by the AGC according to the regional regulation requirement.
8. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 5 when executing the computer program.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
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