KR20130078680A - Integrated power control device and control method for wind power plant control system - Google Patents

Abstract

PURPOSE: An integrated output control device for an output control system of a wind power generation plant and a control method thereof are provided to detect a sudden output variation, to independently control a long-term or short-term energy storage device from an individual aerogenerator, and to control a diesel generator and a dump load, thereby stably controlling the output of a wind power generation plant overall. CONSTITUTION: An output control system (110) of a wind power generation plant includes energy storage devices (115,116) which store or discharge the energy generated by aerogenerators included in the wind power generation plant; a diesel generator (118) which operates if the amount of energy in the energy storage devices is not sufficient; a dump load (117) which discharges the excessively generated energy exceeding the capacity of the energy storage devices; a supervisory computing and data acquisition (SCADA) system (111) which individually controls each aerogenerator; and an integrated output control device (200) which senses the output variation of the aerogenerators connected to an electric power system and controls the operation of the energy storage devices, the diesel generator, and the dump load. The integrated output control device controls the absorption or discharge of energy to or from the energy storage devices to primarily compensate the output variation of the aerogenerators. The SCADA system controls the aerogenerators to increase or decrease the output to secondarily compensate the output variation of the aerogenerators. The operation of the diesel generator and the dump load is controlled for the tertiary compensation of the output variation of the aerogenerators. [Reference numerals] (110) Wind power generation plant output control system; (114) Weather information; (115) Short term energy storage devices; (116) Long term energy storage devices; (117) Dump load; (118) Diesel generator; (120) Wind power generator; (200) Integrated output control device; (AA) Electric power system side; (BB) Wind power plant side

Description

Integrated power control device and control method for output control system of wind farm complex {Integrated power control device and control method for wind power plant control system}

The present invention relates to an integrated power control unit (power control unit) for controlling the output of a large-scale wind farm and its control method, and more particularly, to provide a means for compensating the output of the generator in the event of sudden power fluctuations It includes long and short term energy storage, individual wind generators, diesel generators, and dump loads controlled by Supervisory Computing And Data Acquisition (SCADA) systems, and only integrated output controls to manage and control the entire system. The present invention relates to an output control system of a wind farm.

Among renewable energy sources, which are an essential means of generating CO ₂ to prevent global warming, wind power generation is the fastest spreading energy system. In essence, however, renewable energy sources, such as wind and solar power, rely on the natural environment for their power generation, resulting in a rapidly changing energy output depending on the environment. This intermittence leads to drastic fluctuations in power generation output and, as a result, the stability of the power system. With the recent introduction of renewable energy sources into the power system on a large scale, power quality problems and system stability problems, which were not revealed when the total input capacity was small, have become a reality. Or amend existing regulations to solve the problem of large-scale grid input of renewable power. As a classic way to overcome these problems, the renewable energy development complex has been applied to install a large number of small capacity devices or to distribute power generation facilities over a wide area instead of installing large capacity devices alone. The trend is to try to overcome the problem by installing a separate device for quality compensation or by introducing the latest control techniques.

The technical problem to be solved by the present invention, in order to improve the problem of deterioration of power quality and system stability caused by rapid output fluctuations in new renewable energy power source, especially large wind farms, output quantity of wind power generation by weather information Detects output fluctuations in the event of predicted or abrupt output fluctuations, independently controls long-term or short-term energy storage units and individual wind generators that make up the power plant's output control system. The present invention provides a complex integrated output control device and a control method thereof for an output control system of a wind farm that controls the output of the entire wind farm stably.

In order to achieve the above technical problem, only the integrated output control method for the output control system of the wind farm according to an embodiment of the present invention, the step of predicting the short- and long-term wind power generation using weather information, the change of excessive output Detecting, checking the short-term and long-term energy storage battery charge, controlling the long-term and short-term energy storage to compensate for the output first, and sending the output command value to each wind generator constituting the wind farm Compensation of the output fluctuation secondaryly, and the control method consisting of compensating the output fluctuation in the third phase under conditions that can not be compensated by the primary and secondary output fluctuation compensation using a diesel generator or a dump load.

An output control system of a wind farm is proposed in the present invention for controlling the output of a large-scale wind farm at the level of the complex to provide a power quality suitable for the requirements of the power system. An output control system of a wind farm according to the present invention includes an energy storage device for storing and releasing energy produced by wind generators; A diesel generator for assisting energy storage in undercharged states; A dump load device for releasing excess product energy in excess of the absorbable capacity of the energy storage device; And a SCADA system for individually controlling each wind generator; Meteorological information providing information for predicting wind power generation over a long and short term; And only an integrated output control device for centrally integrated control of the devices. Here, the output control system of the wind farm is a battery energy storage device as the primary control means by the integrated output control device of the central complex in the output of the wind farm due to external factors such as sudden power fluctuations or system accidents of the wind power generators. Output variation of the wind farm by using the energy absorption / emission control of the wind turbine, the active output increase / deceleration control of the individual wind turbine as the secondary control means, and the diesel generator and the dump load as the last tertiary auxiliary control means. It characterized in that the control to suit the linked operating conditions of the power system.

In order to achieve the above technical problem, the integrated output control method of the wind farm for the output control system of the wind farm according to an embodiment of the present invention, (a) the complex contained in the output control system of the wind farm ( plant) detecting an output change (output (power) decrease or output increase) of wind generators included in the wind farm and connected to a power system; And (b) the integrated output control device merely controls the charging or discharging of the energy storage device (short-term energy storage device or long-term energy storage device) included in the output control system to correspond to the detected output variation of the wind generators. And controlling to compensate primarily for the output amount (power).

The integrated output control method of the wind farm includes: (c) when the output variation of the wind generators is not compensated for in the step (b), the complex integrated output control device outputs to each of the wind generators of the output control system. The method may further include controlling to transmit (command) a command value so as to secondarily compensate an output amount (power) corresponding to the detected output variation of the wind generators.

In the integrated output control method of the wind farm, (d) when the output fluctuations of the wind generators are not compensated for in the step (c), the integrated output control device operates the diesel generator or the dump load of the output control system. And controlling to drive (drive) to thirdly compensate for the output amount (power) corresponding to the output variation of the sensed wind generators.

In order to achieve the above technical problem, the integrated output control method of the wind farm for the output control system of the wind farm according to another embodiment of the present invention, (a) a complex contained in the output control system of the wind farm The integrated output control device predicting short-term and long-term wind power generation using weather information provided from the outside; And (b) the only integrated output control device controls the charging or discharging of an energy storage device (short-term energy storage device or long-term energy storage device) included in the output control system to correspond to the predicted wind power generation. And controlling to compensate for the output amount (power) of the output variation of the wind generators included in the power plant and connected to the power system.

In order to achieve the above technical problem, the output control system of the wind farm according to an embodiment of the present invention, the energy for the storage or discharge of energy (electric energy) produced by the wind generators included in the wind farm Storage; A diesel generator for assisting in a low charge state of the energy storage device; A dump load for releasing excess product energy in excess of the absorbable capacity of the energy storage device; SCADA (Supervisory Computing And Data Acquisition) system for individually controlling each of the wind generators; And only an integrated output control device for sensing an output variation of the wind generators coupled to a power system to control the operation of the energy storage device, the diesel generator and the dump load, wherein the only integrated output control device includes the energy. Control the energy absorption or release of the storage device to compensate primarily for the output fluctuations of the wind turbines, and control the output evaporation or output decay of each of the wind generators through the SCADA system to control the output of the wind turbines Control to compensate for the fluctuation secondary, and control the operation of the diesel generator and the operation of the dump load can be controlled to compensate for the output fluctuation of the wind generators in a third.

The only integrated output control device can perform a power transaction function through mutual communication with the power exchange.

The only integrated output control device, the linkage with weather information for predicting the output (power generation) of the wind generators, the linkage with the power exchange for participation in the power market, the linkage with the wind generators, the energy storage device The wind farm may be remotely controlled using a wired or wireless communication network and a communication interface in connection with the diesel generator and the pump load.

In order to achieve the above technical problem, an output control system of a wind farm according to another embodiment of the present invention, the energy storage device for the storage or discharge of energy produced by the wind generators included in the wind farm; And predicting short-term and long-term wind power generation using weather information provided from the outside to compensate for the energy of the output variation of the wind generators included in the wind farm corresponding to the predicted wind power generation and connected to the power system. It may only include an integrated output control device.

The integrated output control device and the control method for the output control system of the wind farm according to the present invention, the control of the output of the wind farm unstable according to the climatic conditions so far, by direct control and auxiliary devices by several steps By cooperatively, it is possible to change to a controllable stable output (constant power appropriate for the power system). As a result, it contributes to the stabilization of the power system and has the effect of enabling reliable supply of renewable energy power.

In addition to the output control required for grid linkage, the present invention can achieve the best operating efficiency at the system level by performing the optimization control to find the optimal solution under the environmental constraints of the surrounding conditions.

In order to more fully understand the drawings used in the detailed description of the invention, a brief description of each drawing is provided.
1 is a block diagram schematically showing a wind farm output control system according to an embodiment of the present invention.
2 is a block diagram showing the configuration of an output control system of a wind farm according to the present invention.
FIG. 3 is a block diagram showing functional blocks of the integrated output control device of FIG. 2 only.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the present invention and the objects attained by the practice of the invention, reference should be made to the accompanying drawings, which illustrate embodiments of the invention, and to the description in the accompanying drawings.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

As the linkage of transmission systems to large wind farms increases, the regulation on linkage to power grids required by power system operators is strengthened. Likewise, existing wind power plants require the need for output control within the limits of rated power. do.

Representative regulations required for grid linkage of large scale renewable power sources include output evaporation rate control, output limit control, output balance control, and system protection control. And assistive devices should be used to achieve the desired control objectives.

1 is a view illustrating a power generation system of a wind farm according to an embodiment of the present invention. Referring to FIG. 1, the power generation system of the wind farm may include an associated transformer 101, a main breaker 102, and a wind farm output control system 110 according to an embodiment of the present invention.

The wind farm output control system 110 is connected to the power system 100 through the associated transformer 101 and the main circuit breaker 102. The wind farm includes a plurality of wind generators 120, the wind generators 120 being connected to a single or multiple power distribution lines 104, generally through one connection point 103, the power system 100. Is associated with.

The output of the wind generator 120 is determined by a wind turbine controller (WTC) 121, and the wind farm output control system 110 and the remote terminal unit (RTU) 113 and It is connected via the network wiring 112.

The wind farm output control system 110 may include a SCADA system 111, a remote terminal device 113, and a network wiring 112.

2 is a block diagram illustrating a configuration of a wind farm output control system 110 according to an embodiment of the present invention.

Referring to FIG. 2, the wind farm output control system 110 is a skid system 111, a weather information (weather information system) 114, and a wind power generator 120 based only on the integrated output control device 200. , Short term energy storage 115, long term energy storage 116, dump load 117, and diesel generator 118.

The integrated output control device 200 only obtains the information of the wind farm through network communication with peripheral devices such as the short-term energy storage device 115 and the like, and stores the energy storage devices based on the calculation result by an internal optimization algorithm. By cooperatively controlling the 115, 116, wind generators 120, dump load 117, and diesel generator 118, the output of the wind farm (wind power generators) is controlled to meet the system linkage criteria. Induce to get the best driving efficiency.

FIG. 3 is a block diagram illustrating the internal main functions of the embodiment of the integrated output control device 200 shown in FIG.

Referring to FIG. 3, only the integrated output control device 200 may communicate with the communication interfaces 210, 220, 230, and 240, the weather DB 211, the wind power generation amount prediction unit 212, the HMI 261, and only the operation. Planning unit 262, main DB 270, power market linking logic unit 221, system optimization logic 260, real-time power supply control logic 242, wind generator control block 241, energy storage control block 231 ), SOC and SOH estimation logic 233, auxiliary device control block 234, and failure analysis and safety analysis unit 263.

The integrated output control device 200 is only connected to other peripheral devices such as the short-term energy storage device 115 through the communication interface (210, 220, 230, 240) and the data collected therein and the results calculated therein. The values are stored in two databases, the weather DB 211 and the main DB 270.

Most of the data of the wind farm is information from the wind generator 120, including the operational state of the wind generator 120 and the general matters necessary for the operation of the wind farm. The weather information is stored in the weather DB 210 through communication, and the wind power generation prediction logic 212 is based on the correlation between the previous weather data provided from the weather DB 210 and the previous output and the long-term and future wind power generation. Make short-term predictions.

Information about the power market is collected through a communication interface with the power exchange, and a corresponding strategy is established in the power market linkage logic 221.

As a user interface for the management and operation of the wind farm, there is a Human Machine Interface (HMI) 261 for monitoring and monitoring of the complex. The overall operation of the wind farm is provided in the operation plan block 262 and the fault analysis and safety analysis block 263. Develop a strategy for maintenance and operation.

The system optimization logic 260 performs the optimization calculation to maximize the efficiency of the entire system under the given environment and constraints as the core of the wind farm control. The system optimization logic 260 controls the energy storage devices, the wind generators, and the auxiliary devices (the dump load 117 and the diesel generator 118 of FIG. 2) based on the optimization calculation result. .

The energy storage control block 231 obtains information from the long-term and short-term energy storage devices (116 and 115 of FIG. 2) through the communication interface 230, and the state of charge (SOC) state of charge, which is the most important information thereof. ) And SOH (State of Health) data 232 to the system optimization logic 260, if the energy storage devices do not provide this information, SOC / SOH (SOC and SOH) by itself Estimation logic 233 calculates and passes each estimate to system optimization logic 260. The energy storage control block 231 controls the long term and short term energy storage devices 116 and 115 of FIG. 2 according to the calculation result of the system optimization logic 260.

Direct control of the wind generator (120 of FIG. 2) as a result of the system optimization logic 260 is performed through the real-time feed control logic 242 and the wind generator control block 241.

The operating states of the auxiliary controls such as the diesel generator (118 in FIG. 2) and the dump load (117 in FIG. 2) are collected in the auxiliary device control block 234 and transferred to the system optimization logic 260 and controlled according to the optimization calculation result. The execution of is also performed in accordance with the management of the auxiliary device control block 234.

The integrated output control device 200 of the wind farm output control system is implemented as a dedicated control device such as a high-speed digital signal processor-based controller or a programmable logic controller-based controller or industrial It can be implemented in a personal computer (PC) based PC platform.

The energy storage device for the primary (primary) compensation of the output fluctuations (output fluctuations of the wind turbines) described with reference to FIG. 2 is a super capacitor or a lithium ion battery characterized by high output density and long life. It is divided into a short-term energy storage device 115 configured and a long-term energy storage device 116 based on a lead acid battery or a flow battery capable of implementing a large amount of energy storage at a relatively low price. The short-term energy storage device 115 may measure the energy from several hundreds (msec) based on the short-term wind power generation forecast or instantaneous measurement data based on weather information (for example, power data measured by the plant integrated output control device 200). Compensating for rapid fluctuations in short-term output in the range of tens of seconds, and long-term energy storage 116 predicts long-term wind power generation based on weather information and historical data (eg, previous weather data). Based on the result, it is used to compensate for the output amount corresponding to a long time range of several hours or one day.

Considering that the short-term energy storage device 115 has a limitation in charging or discharging capacity, the power fluctuation that is primarily compensated by the short-term energy storage device 115 has a limitation in the compensation time, so that the wind power, which is the fundamental cause of the output change, is the wind power. There may be a need to directly control the output of the generator.

When the output of the wind farm is rapidly increased due to the rapid increase in wind energy, the control is primarily to absorb the momentary increase in the energy storage device, and at the same time, the integrated output control device 200 of the wind farm In limiting the power produced by the wind power generator 120 by transmitting an output limit command to each of the wind power generators 120 by communication, only to prevent a sudden increase in the total output. The output increase beyond the charge limit of the energy storage device or the control range of the wind generator can be limited by using the dump load 117 of the output control system as a third (third) output limiting device.

When the output of a wind farm suddenly decreases due to a rapid decrease in wind energy, the electricity stored in the energy storage device can compensate for the instantaneous decrease in the energy storage device as opposed to the increase in power output. It can be controlled to release energy, and at the same time, it can be commanded to increase the output of the wind generator by sending an output increase command to each wind generator as a complementary means of the secondary (secondary) power reduction. At this time, the wind generator 120 needs to operate by reducing the output corresponding to a certain amount from the maximum output amount that can be output in order to secure the reserve power of the wind farm (coastdown) have. In addition, the diesel generator 118 may be compensated for by using the diesel generator 118 as a third means of compensating for the reduction of the output beyond the discharge limit of the energy storage device or the reserve power limit of each wind generator.

The output control system of the wind farm proposed by the present invention (110 of FIG. 1 or 2) is two energy storage devices (115, 116), a dump load (dump load device) 117, and a diesel generator ( 118 is used as an auxiliary means of increasing and decreasing the power, and directly controls the output of the wind generators 120 inside the plant, and is responsible for weather information, overall data monitoring and remote control. It may include only an integrated output control device 200 in conjunction with a Supervisory Computing And Data Acquisition (SCADA) system.

In the present invention, only the integrated output control device 200 in charge of the central control in conjunction with the Skada system 111 in order to control the output of the entire wind farm and collects the entire information of the complex and weather information from the weather information system 114 Information, and information on the power market linkages from the power market, calculations to optimize control functions and wind farms under various constraints, and control energy storage, wind generators and auxiliary devices for output control. It provides a function to smoothly control the output of.

For the short term or long term forecast of wind power generation, only the integrated output control unit 110 is connected to an external weather information service (weather information providing system) 114 via the Internet to obtain a weather forecast (weather information) of the region. At the same time, the current weather conditions are obtained from the weather tower installed in the complex and stored in an internal weather DB (database) 211. Based on this information, the wind power generation prediction logic 212 of the integrated output control device 200 predicts the short-term and long-term output of the wind farm by combining a numerical method and a method using a neural network. .

The output of the wind farm is determined only by the control command of the integrated output control device 200, the wind generator controllers (WTC) of the wind generators 120 and the long-term and short-term energy storage devices (116, 115), In addition, the diesel generator 118 and the dump load 117, which is an auxiliary device for output control, are connected to the network and transmit a control command.

When viewed from the side of the diesel generator 118 and the dump load 117, which are the final auxiliary means of output control of the wind farm, it is necessary to be different from the general use methods such as the base output operation or the static output operation when used alone. In accordance with this, a higher level control device (just integrated output control device 200) requires precise control to produce or consume as much as the output required.

For this purpose, in the case of the diesel generator 118, the generator controller may control the output of the generator so as to follow the output command value of the upper controller (upper controller) by controlling the governor, and the dump load 117 may be In this case, a phase rectified converter (e.g., a converter included in the load control device) can be discharged as heat from the load resistor or water rheostat so that the load control device can follow the discharge command value of the host controller. have.

As above, for the purpose of controlling the output of the wind farm, the diesel generator 118 and the dump load 117 as secondary control means for the energy storage and the wind farm in the primary and secondary, and the third wind farm. As a result of the control using), the output of the wind farm with unstable and rapidly changing characteristics, which aims at producing the maximum output according to the existing climatic conditions, is changed to a stable (constant) output with high fluctuations. It may be possible to construct a power supply system.

In order to change the wind farm that supplies the unstable power supply to the high quality power supply complex that can control the output, it is possible to manage the overall view, change the operation mode, and control the control command rather than the independent control and operation of individual devices. The host controller is required, and its role is only performed by the integrated output control apparatus 200.

1, 2, and 3, only the integrated output control method performed by the integrated output control device 200 for the output control system of the wind farm according to an embodiment of the present invention, the weather information Predicting short- and long-term wind power generation, detecting (detecting) changes in excessive output of wind farms (wind power generators), and checking the charge of short- and long-term energy storage devices (batteries). Controlling the long-term and short-term energy storage devices and compensating the output primarily, and transmitting the output command value to each of the wind generators 120 included in the wind farm. Compensating for the fluctuation, and compensating for the third fluctuation of output fluctuation under conditions that cannot be compensated by the first and second output fluctuation compensations using the diesel generator 118 or the dump load 117. It may be a control method.

1, 2, and 3, the output control system 110 of the wind farm according to an embodiment of the present invention, including a plurality of wind generators 120 connected to the power system on a large scale Wind farms, energy storage devices 115 and 116 for controlling the output of the wind farms, complex output control device 200 for directly controlling the output of each of the wind generators 120, and wind farms Diesel generator 118 and dump load 117 to assist control of the output of the wind turbines 120 and energy storage devices 115 and 116, diesel generator 118 and dump load 117, respectively. It includes only the integrated output control device 200 for integrated management control in the center of the wind farm, such as components. The output control system of the wind farm (or only integrated output control device 200) is the energy storage device 115, 116 and the wind generator 120 and the output control auxiliary device in the event of a sudden output change of the wind generator 120 By cooperatively controlling the fields 117, 118, the output of the entire wind farm can be adjusted appropriately to contribute to the stabilization of the power system.

The integrated output control device 200 of the output control system of the wind farm is a long-term and short-term prediction of wind power generation based on the weather information collection and the current weather conditions, and the power through the interconnection (intercommunication) with the power market. The diesel generator 118 and the dump load 117 for the output assistance and long-term and short-term energy storage devices 116 and 115 for the purpose of carrying out the transaction function and acting as a central power generator in the emergency situation of power supply and demand. In addition, only a level of optimization control can be performed.

Only the integrated output control device 200 is linked to the weather information for predicting the output (power generation), to the power market for participation in the power market, to each wind generator 120 disposed in the complex In connection with the energy storage devices 115 and 116, and with the auxiliary devices 117 and 118 for output control using a wired or wireless communication network and a communication interface, and network-based remote control for a wind farm. It can be performed for all the components, such as wind turbine and RTU included in.

The output control method performed in the output control system 110 of the wind farm is the purpose of satisfying the system linkage regulations required by the power system 100 operator of the wind farm (each wind turbine 120) Detecting (detecting) excessive output change (output fluctuation) (for example, only the integrated output control device 200 is the output change through a sensor (not shown) installed in the WTC 121 or the wind turbine 120) To detect the amount of charge of the batteries 115 and 116, which are short and long term energy storage devices, and that the integrated output control device 200 is configured for the long and short term energy storage devices 115 and 116. Compensating the output fluctuation of the wind farm by the primary control, and the integrated output control device 200 transmits the output command value to each of the wind generators included in the wind farm, the output fluctuation secondary To compensate Comprising, only the integrated output control device 200 using the diesel generator 118 or the dump load 117 to compensate for the output fluctuations in the third order under conditions that cannot be compensated by the primary and secondary output fluctuation compensation It may be a control method.

As described above, an output control system of a wind farm is proposed in the present invention for controlling the output of a large-scale wind farm at a park level to provide a power quality suitable for the requirements of the power system. The output control system of a wind farm according to an embodiment of the present invention is a long-term and short-term battery energy storage devices 116 and 115 as an energy storage device for storing and releasing energy produced by wind power generators, and undercharging. Diesel generator 118 for assisting energy storage in the state, dump load device 117 for discharging excess production energy in excess of the absorbable capacity of energy storage 116, 115, and respective wind generators Skada system 111 for individually controlling the field 120, weather information (or meteorological information providing device) 114 for providing information for predicting the wind power generation in the long and short term, and the energy storage device And only integrated output control device 200 for centrally integrating and controlling devices such as 116 and 115 and dump load device 117. Here, the output control system 110 of the wind farm is a central complex integrated output control device 200 in the output fluctuation of the wind farm due to external factors such as sudden power fluctuations or system accidents of the wind generators 120 Using the energy absorption or release control of the battery energy storage devices 116 and 115 as the primary control means, and using the active output evaporation or deceleration control of the individual wind turbine 120 as the secondary control means, By using the diesel generator 118 and the dump load 117 as the third auxiliary control means, the output variation of the wind farm can be controlled to suit the linked operating conditions of the power system.

Components or 'units' or blocks used in the present embodiment may be software such as a task, a class, a subroutine, a process, an object, an execution thread, a program, or an FPGA that is performed in a predetermined area on a memory. It may be implemented in hardware such as a field programmable gate array or an application-specific integrated circuit (ASIC), or may be a combination of the above software and hardware. The components or parts may be included in a computer-readable storage medium, or a part of the components may be distributed to a plurality of computers.

As described above, the embodiments have been disclosed in the drawings and specification. Although specific terms are used herein, they are used for the purpose of describing the present invention only and are not used to limit the scope of the present invention described in the claims or the claims. It is therefore to be understood by those skilled in the art that various modifications and equivalent embodiments are possible in light of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: power system
110: wind farm output control system
120: wind generator
121: WTC
200: only integrated output control device
111: SCADA system
114: Weather information
115: short-term energy storage
116: long term energy storage device
117: dump load
118: diesel generator
211: weather DB
260: system optimization logic
270 main DB

Claims (8)

In the integrated output control method of the wind farm for the output control system of the wind farm,
(a) detecting an output variation of wind generators included in the wind farm and connected to a power system by a complex integrated output control device included in the output control system of the wind farm; And
(b) controlling only the integrated output control device to control charging or discharging of the energy storage device included in the output control system so as to first compensate an output amount corresponding to the output variation of the sensed wind generators. Integrated output control method of wind farm The method of claim 1,
Integrated output control method of the wind farm,
(c) when the output fluctuations of the wind generators are not compensated for in step (b), the integrated output control device merely transmits an output command value to each of the wind generators of the output control system to And controlling to compensate for an output amount corresponding to the output variation secondarily. The method of claim 2,
Integrated output control method of the wind farm,
(d) when the output fluctuations of the wind generators are not compensated in step (c), the integrated output control device merely controls the diesel generator or the dump load of the output control system to operate so that the detected output fluctuations of the wind generators And controlling to compensate for the amount of output corresponding to the third. In the integrated output control method of the wind farm for the output control system of the wind farm,
(a) predicting short-term and long-term wind power generation using weather information provided from the outside by the integrated output control device included in the output control system of the wind farm; And
(b) a wind generator in which the complex integrated output control device is included in the wind farm corresponding to the predicted wind power generation and connected to a power system by controlling the charging or discharging of an energy storage device included in the output control system. And controlling to compensate for the output of the fluctuations in the output of the wind farm. In the output control system of the wind farm,
An energy storage device for storing and releasing energy produced by the wind generators included in the wind farm;
A diesel generator for assisting in a low charge state of the energy storage device;
A dump load for releasing excess product energy in excess of the absorbable capacity of the energy storage device;
SCADA (Supervisory Computing And Data Acquisition) system for individually controlling each of the wind generators; And
It includes only an integrated output control device for detecting the output variation of the wind generators coupled to the power system to control the operation of the energy storage device and the diesel generator and the dump load,
The only integrated output control device
Control the energy absorption or release of the energy storage device to compensate primarily for the output fluctuations of the wind turbines, and control the output evaporation or output decay of each of the wind generators through the skada system to control the wind turbines To control the output fluctuations of the wind turbines secondarily, and controlling the operation of the diesel generator and the dump load to control the output fluctuations of the wind turbines thirdly. The method of claim 5,
The only integrated output control device,
An output control system of a wind farm that performs power trading functions through mutual communication with a power exchange. The method of claim 5,
The only integrated output control device,
Linkage with weather information for predicting output of the wind generators, linkage with a power exchange for participation in a power market, linkage with the wind generators, linkage with the energy storage device, the diesel generator and the pump load And an output control system of a wind farm for remotely controlling the wind farm using a wired or wireless communication network and a communication interface. In the output control system of the wind farm,
An energy storage device for storing and releasing energy produced by the wind generators included in the wind farm; And
Forecasting short-term and long-term wind power generation using weather information provided from the outside to control to compensate the energy of the output fluctuations of the wind generators included in the wind farm corresponding to the predicted wind power generation and connected to the power system An output control system of a wind farm including an integrated output control device.

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