CN111371119B - System and method for solving wind power plant AGC (automatic gain control) scheduling penalty pull-stop - Google Patents
System and method for solving wind power plant AGC (automatic gain control) scheduling penalty pull-stop Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
The invention provides a system for solving the problem of pull-stop of AGC (automatic gain control) scheduling penalty of a wind power plant, which comprises the following steps: an energy-saving scheduling system; a DCS system; a technical supervision monitoring system; an AGC over-sending alarm module; and an AGC exit and channel interruption warning module; the AGC over-sending warning module monitors whether the difference value of the active power of the background data scheduling control point and the AGC planned value exceeds an early warning value or not, whether the duration time of the early warning value exceeds a first threshold value or not, and if the difference value exceeds the first threshold value, the AGC over-sending warning module sends out over-sending warning; the AGC quitting and channel interruption warning module judges whether the AGC quitting and scheduling communication state is in a normal or interrupted state through point position change, and therefore a first early warning is sent out to remind operating personnel to take measures; when the AGC exits and the dispatching communication state is interrupted, the received instruction is kept unchanged continuously when the AGC instruction is interrupted, and if the instruction is continuously unchanged and exceeds a second threshold value, a second early warning is sent out to remind an operator to pay attention. A corresponding method is also provided.
Description
Technical Field
The invention relates to the technical field of wind power development, in particular to a system and a method for solving the problem of pull-stop of AGC (automatic gain control) scheduling penalty of a wind power plant, and belongs to the technical field of lean development of a wind power market.
Background
Automatic Generation Control (AGC) is an important means for maintaining the frequency stability of a power system and the inter-area power system, and is one of the contents of auxiliary services. The auxiliary service generally refers to the main function of incomplete power transmission, that is, all auxiliary measures needed to be taken to transmit electric energy from the power generation side to the user side and simultaneously guarantee the power supply safety and quality, so all auxiliary measures taken to guarantee the electric energy quality and complete system stability in the power transmission service process should be included in the auxiliary service scope. The auxiliary service management and assessment work of grid-connected power plants in China is basically realized in 2011 by leading the North China to pass the auxiliary service and grid-connected operation management implementation rules (two rules for short) of grid-connected power plants in the North China and developing a corresponding technical support platform on the basis of multi-party discussion, simulating the trial operation of the Jingjin Tang power grid in 2009, and continuously developing the relevant work of auxiliary service management in other areas until 2011 all areas in China.
In order to further strengthen the three-way dispatching of the wind and light field station, a new province character adjusting No. [2018]69 notice about increasing the automatic output limiting function in the AGC system is issued by the power grid in 2018, 4 and 14, and on the basis of taking advantage of the active power control experience of other provinces wind and light field stations in northwest, the automatic output limiting function is added in the AGC system according to the safe operation of the Xinjiang power grid and the full-power consumption of the wind and light field station requirements: when one of the following occurs: (1) the photovoltaic power generation is 1 megawatt and lasts for 10 minutes; (2) the wind power is over-generated for 1.5 megawatts and lasts for 10 minutes; (3) the AGC function is free from exiting or channel interruption for 20 minutes; automatically setting AGC instruction value to zero and pushing window to alarm, after setting AGC instruction value to zero, its zero setting instruction should be at least maintained until the output of said station is reduced to zero; the on-duty personnel of the wind and light station shall pull all fans or reduce the output of the photovoltaic power generation assembly to zero within 3 hours from the time when the AGC instruction value is automatically set to zero, or immediately order to pull and stop the corresponding wind and light station after the provincial dispatching on-duty dispatcher finds that the AGC output instruction is set to zero, and perform one-period punishment according to the regulations; and (5) adding a penalty period after the output does not drop to zero after 3 hours. After the zero setting, the normal instruction value of the water tank can be recovered by an automation worker according to a water new service notice.
Based on the national network requirements, operators of the field stations of the scene stations are difficult to find abnormal operation conditions such as overload, AGC exit, channel interruption and the like in 10 minutes by using the functions of the original monitoring system, and the situation that the field stations violate scheduling requirements and are pulled to stop can be caused by missing the processing time.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides a system for solving the problem of pull-stop of AGC (automatic gain control) scheduling penalty of a wind power plant, which comprises the following steps:
an energy-saving dispatching system;
a DCS system;
a technical supervision monitoring system;
an AGC over-sending alarm module; and
an AGC exit and channel interruption alarm module;
the AGC excessive-sending warning module is set based on the technical supervision and monitoring system, and is used for monitoring whether the difference value between the active power of the background data scheduling control point and the AGC planned value exceeds an early warning value or not, whether the duration time of the active power exceeding the early warning value exceeds a first threshold value or not, and if the duration time of the active power exceeding the early warning value exceeds the first threshold value, the AGC excessive-sending warning module can send out excessive-sending warning;
the AGC quitting and channel interruption warning module is set based on the technical monitoring system, and judges whether the AGC quitting and scheduling communication state is in a normal or interrupted state through point position change, so that a first early warning is sent to remind operating personnel to take measures; when the AGC exits and the dispatching communication state is interrupted, the received instruction is kept unchanged continuously when the AGC instruction is interrupted, and if the instruction is continuously unchanged and exceeds a second threshold value, a second early warning is sent out to remind an operator to pay attention.
Preferably, the first threshold value is 2.5 minutes, and the second threshold value is 2.5 minutes.
Preferably, the superluminescent early warning, the first early warning and the second early warning are superluminescent characters, color changes or voice alarms.
Preferably, the energy-saving dispatching system is connected with the main switch of the technical supervision and monitoring system so as to obtain operation data of each unit required by performance calculation and load optimization distribution, a reverse isolation device after RTU is arranged in front of the energy-saving dispatching system according to the requirement of secondary security of the power system, and an upper switch in the energy-saving dispatching system is responsible for connecting each workstation and server in the system, and is provided with a single-phase isolation device for uplink communication with the RTU and downlink communication with the DCS digital-to-analog conversion module.
Preferably, the work stations comprise a performance calculation station, a load optimization distribution station, a long-term station, a real-time/historical database station and a load optimization distribution station, wherein the performance calculation station is responsible for completing the real-time calculation of the load-coal consumption characteristics of each unit; the load optimization distribution station completes the optimization load distribution calculation of each unit according to the network load regulation total instruction, communicates with the digital-to-analog conversion module and the DCS of each unit and issues a load instruction; the value long station is responsible for a plurality of management works of manual confirmation operation, report management, uploading of network scheduling real-time data and application of AGC operation of a whole plant automatic power generation control system; the real-time/historical database station is responsible for accessing real-time and historical data; the computer of the load optimization distribution station is provided with double network cards which are respectively provided with different IP address sections so as to ensure effective logic isolation.
The invention also aims to provide a method for solving the problem of pull-stop of the AGC scheduling penalty of the wind power plant, and the method uses the system for solving the problem of pull-stop of the AGC scheduling penalty of the wind power plant, and comprises the following steps:
Preferably, the step 2 includes: if the difference value of the active power of the background data scheduling control point and the AGC plan value exceeds the early warning value and lasts for 2.5 minutes, the AGC value and the histogram change from yellow to red to carry out overfire early warning, wherein the power plant AGC command displays red early warning when the wind power overfire lasts for 1000kW for 2.5 minutes; photovoltaic 600kW that send out excessively lasts 2.5 minutes AGC instruction and shows red early warning, the backstage is reported out simultaneously and voice broadcast suggestion operation personnel take the pre-control to stop and pull measures to this station.
Preferably, the step 3 comprises: under normal conditions, the monitoring background acquires that the point position of the AGC state and the dispatching communication state of each station is '0', when the point position is detected to be '1', the system judges that the AGC exits and the dispatching communication state is interrupted, and the point is utilized to increase background optical character alarm and voice broadcast to remind operating personnel to take measures; when the AGC exits and the dispatching communication state is interrupted, the received instruction is kept unchanged continuously when the AGC instruction is interrupted, if the time exceeds 2.5 minutes, the AGC instruction displays pink under the field station load histogram, and meanwhile, light words and voice broadcast are reported to remind operators of paying attention.
Preferably, the first threshold value is 2.5 minutes, and the second threshold value is 2.5 minutes.
Preferably, the superluminescent early warning, the first early warning and the second early warning are superluminescent words, color changes or voice alarms.
The invention has the beneficial effects that:
the invention provides a monitoring system of a wind and light station, wherein the monitoring system is added with AGC over-sending and AGC exit channel interruption warning functions, can effectively improve the attention of operators on duty to the station through image, light character and sound prompt, reduces the working pressure of the operators, and can remind the operators to take control measures in time to reduce the pull-stop risk, and specifically comprises the following steps:
1. the problem that the operating personnel can not monitor the AGC over-sending condition is solved:
the existing wind and light station monitoring system can only monitor and record station loads in real time through operators, so that the condition of overload is avoided, but the attention of the operators cannot be concentrated for a long time, and the conditions of post maloperation, inadequate monitoring and the like are likely to occur. Therefore, the monitoring system is required to have a function of prompting the overload of the operating personnel from a plurality of aspects such as pictures, optical words, voice broadcast and the like, and the monitoring system has the function.
2. The problem that operating personnel can not monitor the abnormal operation conditions of AGC quitting and channel quitting is solved:
at present, operators of a wind and light station monitoring system pay attention to loads and equipment operation conditions in a station in a monitoring process, often neglect to monitor AGC quitting and dispatching communication states, and often find the AGC quitting and dispatching communication states after being pulled to stop. Therefore, the monitoring system has the function of prompting the overload of the operating personnel from various aspects such as pictures, optical words, voice broadcast and the like.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of an AGC excessive monitoring picture warning interface according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an AGC hyper luminescent word alert interface via an information bar according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a breakpoint bit change interface of a channel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an AGC logout and channel interrupt optical word alarm interface according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an AGC command 2.5 minute invariant frame alarm interface according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of 2.5 minute unchanged codeword warning via the rightmost column AGC command according to the embodiment of the present invention;
FIG. 7 is a single schematic table of AGC overshoot settings for stations according to an embodiment of the present invention;
fig. 8 is a flow diagram of AGC overshoot handling according to an embodiment of the present invention;
fig. 9 is a flow chart of AGC exit, channel disruption handling according to an embodiment of the invention.
Detailed Description
This embodiment develops to geomantic omen fields such as stone city sub-photovoltaic, willow garden, and the system of solving wind-powered electricity generation field AGC dispatch punishment and stopping includes: an energy-saving scheduling system; a DCS system; a technical supervision monitoring system; an AGC over-sending alarm module; and an AGC exit and channel interruption alarm module.
The energy-saving dispatching system is connected with a main switch of the technical supervision and monitoring system so as to obtain the implementation operation data of each unit required by performance calculation and load optimization distribution, a reverse isolation device after RTU is arranged in front of the energy-saving dispatching system according to the requirement of secondary security of the power system, and an upper switch in the energy-saving dispatching system is responsible for connecting equipment such as each workstation and a server in the system, wherein the workstation comprises a performance calculation station, a load optimization distribution station, a long-distance station, a real-time/historical database station and a load optimization distribution station. The performance computing station is responsible for completing the real-time computation of the load-coal consumption characteristics of each unit; the load optimization distribution station completes the optimization load distribution calculation of each unit according to the network load regulation total instruction, communicates with the digital-to-analog conversion module and the DCS of each unit and issues a load instruction; the value long station is responsible for a plurality of management works of manually confirming operation, managing reports, uploading network scheduling real-time data and applying for AGC operation of a whole plant automatic power generation control system; the real-time/historical database station is responsible for accessing real-time and historical data; the computer of the load optimization distribution station is provided with double network cards which are respectively provided with different IP address sections so as to ensure effective logic isolation.
Referring to fig. 1, an AGC supersending monitoring picture alarm interface schematic diagram: the AGC over-sending warning module is set based on a technical supervision monitoring system, whether the difference value of the active power of the background data scheduling control point and the AGC planned value exceeds an early warning value or not and whether the duration time of the active power of the background data scheduling control point exceeds a first threshold value or not are monitored, if the duration time of the active power of the background data scheduling control point exceeds the first threshold value, the AGC over-sending warning module can send out over-sending warning, see figure 2, and an AGC over-sending character warning interface schematic diagram is carried out through an information bar.
Referring to fig. 3, the AGC quit and channel interruption warning module is set based on a technical supervision and monitoring system, and judges whether the AGC quit and scheduling communication state is in a normal or interrupted state through point location change, thereby sending a first warning to remind an operator to take measures; when the AGC exits and the dispatching communication state is interrupted, the received instruction is kept unchanged continuously when the AGC instruction is interrupted, and if the instruction is continuously unchanged and exceeds a second threshold value, a second early warning is sent out to remind an operator to pay attention. Fig. 4 is a schematic diagram of an AGC exit and channel interruption optical word warning interface, fig. 5 is a schematic diagram of an AGC instruction 2.5 minute unchanged picture warning interface, and fig. 6 is a schematic diagram of an AGC instruction 2.5 minute unchanged optical word warning through the rightmost column.
In this example, the first threshold value is 2.5 minutes, and the second threshold value is 2.5 minutes.
In this embodiment, the superluminescent warning, the first warning, and the second warning are superluminescent characters, color changes, or voice warnings.
In this embodiment, in order to ensure the safety of each system, a single-phase isolation device is provided for both the uplink communication with the RTU and the downlink communication with the DCS digital-to-analog conversion module.
The invention also aims to provide a method for solving the problem of pull-stop of the AGC scheduling penalty of the wind power plant, and the method uses the system for solving the problem of pull-stop of the AGC scheduling penalty of the wind power plant, and comprises the following steps:
Referring again to fig. 1-2, step 2 includes: if the difference value of the active power of the background data scheduling control point and the AGC plan value exceeds the early warning value and lasts for 2.5 minutes, the AGC value and the histogram change from yellow to red to perform overfire early warning, wherein the power plant AGC instruction is displayed with red early warning when the wind power overruns for 1000kW and lasts for 2.5 minutes; photovoltaic 600kW that send out excessively lasts 2.5 minutes AGC instruction and shows red early warning, the backstage is reported out simultaneously and voice broadcast suggestion operation personnel take the pre-control to stop and pull measures to this station.
Referring again to fig. 3-6, step 3 includes: under normal conditions, the monitoring background acquires that the point position of the AGC state and the dispatching communication state of each station is '0', when the point position is detected to be '1', the system judges that the AGC exits and the dispatching communication state is interrupted, and the point is utilized to increase background optical character alarm and voice broadcast to remind operating personnel to take measures; when the AGC exits and the dispatching communication state is interrupted, the received instruction is kept unchanged continuously when the AGC instruction is interrupted, if the time exceeds 2.5 minutes, the AGC instruction displays pink under the field station load histogram, and meanwhile, light words and voice broadcast are reported to remind operators of paying attention.
As shown in fig. 8, the AGC supersending disposal flow chart is shown, wherein the personnel are divided into centralized control on-duty personnel and field on-duty personnel, the centralized control on-duty personnel is responsible for centralized control operation on-duty monitoring, when finding that a certain wind farm is over-red and shows red alarm, the centralized control calculates the number of the shutdown machines and operates the shutdown machines/inverters according to the supersending amount, then judges whether the shutdown machines/inverters are controlled, if so, the actual treatment is controlled in a planned value, and the post-evaluation is performed, wherein the post-evaluation includes event passing, reason analysis, problem existence, rectification measure and economic loss analysis, and the flow is ended; if the fan/inverter is not controlled, a field attendant operates the fan/inverter on the spot, the operation mode can try two modes of central monitoring and/or web page version, the fan/inverter is checked again whether to be controlled or not after the operation is finished, if the fan/inverter is controlled, the actual treatment is controlled in a planned value, post evaluation is carried out, wherein the post evaluation comprises event passing, reason analysis, problem existence, rectification and economic loss analysis, and the process is ended; in the latter case, if the fan/inverter is not controlled, judging whether the fan/inverter is pulled out or not, namely, whether AGC is saved and set to 0 or not, if the fan/inverter is pulled out or not, sending personnel on site to stop the fan/inverter on site, then sending a provincial dispatching reply command to reduce the output to zero, informing an operation main pipe to find out the reason for the fan out of control and recover, then executing a provincial dispatching business process to recover the output on site, and finally performing post-evaluation, wherein the post-evaluation comprises event passing, reason analysis, problem existence, correction and modification measures and economic loss analysis, and ending the process; if the AGC is not pulled to stop at the moment and the AGC is not saved and set to 0, the AGC is quitted or disconnected from the AGC and the saving network cable on the site at an AGC background computer, and meanwhile, a centralized control center is informed to report the saving, and the contents of the baby comprise: the method comprises the steps that AGC is interrupted due to communication abnormity in a certain field, reasons are searched, a benchmark machine is applied for reservation when load is reduced, then execution is carried out according to a provincial dispatching order, personnel are dispatched to the site to stop a fan/inverter on the spot, the benchmark machine is reserved, a centralized control center is informed to dispatch a command to the province after operation is completed, a coordination factory finds out the reason of fan out of control and recovers the fan out of control, then the centralized control center is informed to apply recovery processing to provincial dispatching, post evaluation is carried out, wherein the post evaluation comprises event passing, reason analysis, problem existence, adjustment and modification measures and economic loss analysis, and the process is finished.
Referring to fig. 9, regarding to northwest centralized control center station and scheduling communication interruption, namely, an AGC exit and channel interruption handling flow chart, relating to a northwest centralized control center and an area operation inspection center, the northwest centralized control center configures centralized control operation on-duty personnel for monitoring, if the wind farm/photovoltaic AGC and scheduling communication state is interrupted (specific phenomena include that AGC instructions do not change for a long time and pink is displayed; or the upper left corner of a station monitoring interface and scheduling communication interruption indicate interruption; or centralized control background voice gives an alarm), scheduling communication interruption time is judged, if within 3 minutes, the regional maintenance personnel is notified by telephone to investigate the reason, and an operation supervisor is reported; if the interruption is more than 3 minutes, the regional maintainers are informed of the reason for troubleshooting through the telephone, the operation supervisor is reported, and meanwhile, the regional operation and inspection center receives the telephone notification of the centralized control center and then the field personnel can authorize the operation: checking whether an I-area switch, a longitudinal encryption device and a router device of a dispatching data network have alarms or not; checking whether the connecting network cable is loosened or not; restarting the equipment after the Ping equipment IP is searched; if the communication is not recovered, contacting the manufacturer for processing, comparing the processed communication with the scheduling communication interruption time for judging, if the interruption time is within 20 minutes, reporting the centralized control center on-duty personnel and analyzing the interruption reason after the communication is recovered, if the interruption time is more than 20 minutes, reporting the on-duty personnel to the current value scheduling control center, reducing the whole field load to 0MW according to the current value scheduling instruction, thereby avoiding the whole 15-minute operation, after the communication is recovered, applying the current value scheduling to recover the field output station, gradually starting the machine according to the scheduling AGC instruction, and finishing the disposal process.
The embodiment provides a scene station monitored control system, wherein increase AGC and send out excessively and AGC withdraws from the passageway and interrupts the alarm function, can effectively improve the attention degree of operation personnel on duty to this station through image, light word, sound suggestion, reduce operation personnel operating pressure, can remind the operation personnel in time to take control measure and reduce the risk of pulling out to stop, specifically include:
1. the problem that the operating personnel can not monitor the AGC over-sending condition is solved:
the existing wind and light station monitoring system can only monitor and record station loads in real time through operators, so that the condition of overload is avoided, but the attention of the operators cannot be concentrated for a long time, and the conditions of post maloperation, inadequate monitoring and the like are likely to occur. Therefore, the monitoring system is required to have a function of prompting the overload of the operating personnel from various aspects such as pictures, optical words, voice broadcast and the like, and the monitoring system has the function.
2. The problem that operating personnel can not monitor the abnormal operation conditions of AGC quitting and channel quitting is solved:
at present, operators of a wind and light station monitoring system pay attention to loads and equipment operation conditions in a station in a monitoring process, often neglect to monitor AGC quitting and dispatching communication states, and often find the AGC quitting and dispatching communication states after being pulled to stop. Therefore, the monitoring system has the function of prompting the overload of the operating personnel from various aspects such as pictures, optical words, voice broadcast and the like.
While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It will be understood by those skilled in the art that variations and modifications of the embodiments of the present invention can be made without departing from the scope and spirit of the invention.
Claims (10)
1. A system for solving pull-stop of AGC scheduling penalty of wind power plant is characterized by comprising:
an energy-saving scheduling system;
a DCS system;
a technical supervision monitoring system;
an AGC over-sending alarm module; and
an AGC exit and channel interruption alarm module;
the AGC excessive-sending warning module is set based on the technical supervision and monitoring system, and is used for monitoring whether the difference value between the active power of the background data scheduling control point and the AGC planned value exceeds an early warning value or not, whether the duration time of the active power exceeding the early warning value exceeds a first threshold value or not, and if the duration time of the active power exceeding the early warning value exceeds the first threshold value, the AGC excessive-sending warning module can send out excessive-sending warning;
the AGC quitting and channel interruption warning module is set based on the technical monitoring system, and judges whether the AGC quitting and scheduling communication state is in a normal or interrupted state through point position change, so that a first early warning is sent to remind operating personnel to take measures; when the AGC exits and the dispatching communication state is interrupted, the received instruction is kept unchanged continuously when the AGC instruction is interrupted, and if the time for which the instruction is unchanged continuously exceeds a second threshold value, a second early warning is sent out to remind an operator to pay attention.
2. The system for solving wind farm AGC scheduling penalty pull-stop according to claim 1, characterized by: the first threshold value is 2.5 minutes and the second threshold value is 2.5 minutes.
3. The system for solving wind farm AGC scheduling penalty pull-stop according to claim 1, characterized by: the superluminescent early warning, the first early warning and the second early warning are superluminescent characters, color changes or voice alarms.
4. The system for solving wind farm AGC scheduling penalty pull-stop according to claim 1, characterized by: the energy-saving dispatching system is connected with the main switch of the technical supervision and monitoring system so as to obtain the implementation operation data of each unit required by performance calculation and load optimization distribution, a reverse isolation device is arranged in front of the energy-saving dispatching system after RTU according to the requirement of secondary security of the power system, and an upper switch in the energy-saving dispatching system is responsible for connecting each workstation and server in the system, and is provided with a single-phase isolation device for uplink communication with the RTU and downlink communication with the DCS digital-to-analog conversion module.
5. The system for solving wind farm AGC scheduling penalty pull-stop according to claim 4, characterized in that: the workstation comprises a performance computing station, a load optimization distribution station, a value long station, a real-time/historical database station and a load optimization distribution station, wherein the performance computing station is responsible for completing the real-time computation of load-coal consumption characteristics of each unit; the load optimization distribution station completes the optimization load distribution calculation of each unit according to the network load regulation total instruction, communicates with the digital-to-analog conversion module and the DCS of each unit and issues a load instruction; the value long station is responsible for a plurality of management works of manual confirmation operation, report management, uploading of network scheduling real-time data and application of AGC operation of a whole plant automatic power generation control system; the real-time/historical database station is responsible for accessing real-time and historical data; the computer of the load optimization distribution station is provided with double network cards which are respectively provided with different IP address fields so as to ensure effective logic isolation.
6. A method for solving wind farm AGC scheduling penalty pull-stop using a system for solving wind farm AGC scheduling penalty pull-stop according to any of claims 1-5, characterized by the steps of:
step 1, the energy-saving dispatching system is connected with a main switch of the technical supervision and monitoring system, so that real-time operation data of each unit required for performance calculation and load optimization distribution are obtained;
step 2, setting is carried out based on the technical supervision and monitoring system, whether the difference value of the active power of the background data scheduling control point and the AGC plan value exceeds an early warning value or not is monitored, whether the duration time of the active power of the background data scheduling control point exceeding the early warning value continuously exceeds a first threshold value or not is monitored, and if the duration time of the active power of the background data scheduling control point exceeding the early warning value continuously exceeds the first threshold value, the AGC excessive-sending warning module can send out an excessive-sending warning;
step 3, setting is carried out based on the technical supervision and monitoring system, and whether the AGC quitting and scheduling communication state is in a normal or interrupted state is judged through point position change, so that a first early warning is sent to remind operating personnel to take measures; when the AGC exits and the dispatching communication state is interrupted, the AGC command keeps the command received when the AGC command is interrupted to be unchanged continuously, and if the command time of continuous unchanged exceeds a second threshold value, a second early warning is sent out to remind an operator to pay attention.
7. The method according to claim 6, wherein the step 2 comprises: if the difference value of the active power of the background data scheduling control point and the AGC plan value exceeds the early warning value and lasts for 2.5 minutes, the AGC value and the histogram change from yellow to red to perform overfire early warning, wherein the wind power overfire lasts for 1000kW and lasts for 2.5 minutes, and the AGC command of the wind power station displays red early warning; photovoltaic 600kW that send out lasts 2.5 minutes AGC instruction and shows red early warning, the backstage is reported out simultaneously and is carried out voice broadcast and is reminded the operation personnel to take the pre-control to stop and pull measure to this photovoltaic station.
8. The method according to claim 6, wherein the step 3 comprises: under normal conditions, the monitoring background acquires that the point position of the AGC state and the dispatching communication state of each station is '0', when the point position is detected to be '1', the system judges that the AGC exits and the dispatching communication state is interrupted, and the point is utilized to increase background optical character alarm and voice broadcast to remind operating personnel to take measures; and when the AGC exits and the dispatching communication state is interrupted, the AGC command keeps the command received when the AGC command is interrupted continuously, if the command exceeds 2.5 minutes, the AGC command displays pink under the field station load histogram, and meanwhile, light characters and voice broadcast are reported to remind operating personnel of paying attention.
9. The method of claim 6, wherein the first threshold is 2.5 minutes and the second threshold is 2.5 minutes.
10. The method of claim 6, wherein the overglowing, first warning, and second warning are overglowing words, color changes, or voice alerts.
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