CN105320076A - AGC signal disturbance processing system of large-scale thermal power generating set - Google Patents
AGC signal disturbance processing system of large-scale thermal power generating set Download PDFInfo
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- CN105320076A CN105320076A CN201410238765.9A CN201410238765A CN105320076A CN 105320076 A CN105320076 A CN 105320076A CN 201410238765 A CN201410238765 A CN 201410238765A CN 105320076 A CN105320076 A CN 105320076A
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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
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Abstract
The invention discloses an automatic generation control (AGC) signal disturbance processing system of a large-scale thermal power generating set. The signal disturbance processing system comprises a power grid dispatching center, a power plant remote terminal unit RTU and a power plant automatic generating control system. The power grid dispatching center transmits an AGC signal to the power plant automatic generating control system through the RTU. The signal disturbance processing system further comprises a subtraction module, an absolute value module, an upper pound module, a NOT gate module M5, a digital quantity time-delay module, a NOT gate module M8, an analog quantity switching module M9 and an analog quantity switching module M12. Through the connection of parameters and the modules, small-fluctuation interference signals in the small-fluctuation interference AGC signals received by a power plant set are disposed of, the quality of supplied power is improved from the source, and the availability ratio index of power plant set AGC check is increased.
Description
Technical field
The present invention relates to a kind of signal processing system, particularly relate to a kind of large-scale thermal power machine group AGC (AutomaticGenerationControl, Automatic Generation Control) signal disturbance disposal system.
Background technology
AGC instruction is the target power that grid dispatching center calculates the controlled unit produced, according to RTU (RemoteTerminalUnit, RTU) communication rule generates AGC scale-of-two remote control message and is sent to power plant RTU through high-frequency carrier signal, and power plant RTU converts AGC control signal the control system of 4 ~ 20mA Signal transmissions to monoblock to.But in the process of AGC signal from scheduled transmission to Power Plant, because carrier signal can inevitably be subject to certain interference, thus to becoming a kind of signal with minor swing during power plant's control end, the unit electric load of such control also with minor swing, can just have impact on the quality of power supply of power supply from source.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of large-scale thermal power machine group AGC signal disturbance disposal system, solve disposing with the minor swing undesired signal in minor swing interference AGC signal that Power Plant is received, thus improve the technical matters of power quality from source, and improve the Availability Index of Power Plant AGC examination.
In order to achieve the above object, embodiments provide a kind of large-scale thermal power machine group AGC signal disturbance disposal system, comprise grid dispatching center, power plant RTU RTU, power plant's automatic electricity generation control system, described grid dispatching center by described RTU by AGC Signal transmissions to described power plant automatic electricity generation control system, also comprise subtraction block, absolute value block, high limit module, not gate module M5, digital quantity time delay module, not gate module M8, analog quantity handover module M9 and analog quantity handover module M12; Concrete,
The input end i1 of the automatic electricity generation control system and described subtraction block that transmit described AGC signal is connected, described subtraction block is connected with the input end of described absolute value block by output terminal O1, described absolute value block limits the input end i of module to be connected by output terminal O2 with described height, described high limit module is connected with the input end of described not gate module M5 by output terminal O4, described not gate module M5 is connected with the input end i of described digital quantity time delay module by output terminal O5, described digital quantity time delay module is connected with the input end of described not gate module M8 by output terminal O7, described not gate module M8 is connected with the input end s of described analog quantity handover module M9 by output terminal O8, described analog quantity handover module M9 is connected with the input end i2 of described analog quantity handover module M12 by output terminal O9.
Preferably, described system also comprises constant module M3, constant module M6, analog quantity Quality estimation module and not gate module M11;
Described automatic electricity generation control system is connected with the input end i2 of described analog quantity handover module M9, the output terminal O9 of described analog quantity handover module M9 is connected with the input end i1 of described analog quantity handover module M9, and the described output terminal O9 of analog quantity handover module M9 is connected with the input end i2 of described subtraction block; Described automatic electricity generation control system is connected with the input end of described analog quantity Quality estimation module, the output terminal O10 of described analog quantity Quality estimation module is connected with the input end of described not gate module M11, the output terminal O11 of described not gate module M11 is connected with the input end s of described analog quantity handover module M12, and the output terminal O12 of described analog quantity handover module M12 is also connected with the input end i1 of described analog quantity handover module M12;
Described high limit module is connected with the output terminal O3 of described constant module M3 by input end r, and described digital quantity time delay module is connected with the output terminal O6 of described constant module M6 by input end i.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
The above embodiment of the present invention, solve disposing with the minor swing undesired signal in minor swing interference AGC signal that Power Plant is received, thus improve the technical matters of power quality from source, and improve the Availability Index of Power Plant AGC examination.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram that the embodiment of the present invention provides;
Fig. 2 is the characterisitic parameter schematic diagram of the modules that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, be clearly and completely described the technical scheme in the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, be electrical block diagram of the present invention.In this schematic diagram, comprise subtraction block (M1), absolute value block (M2), constant module R (M3), high limit module (M4), not gate module (M5), constant module T (M6), digital quantity time delay module (M7), not gate module (M8), analog quantity handover module T (M9), analog quantity Quality estimation module (M10), not gate module (M11), analog quantity handover module T (M12).
Concrete, below in detailed process, for modules all with the M in bracket
n, n=1.2.3 ... 12.
Automatic electricity generation control system is connected with the input end i1 of M1 module, described M1 module is connected with the input end of described M2 module by output terminal O1, described M2 module is connected with the input end i of described M4 module by output terminal O2, described M4 module is connected with the input end of described M5 module by output terminal O4, described M5 module is connected with the input end i of described M7 module by output terminal O5, described M7 module is connected with the input end of described M8 module by output terminal O7, described M8 module is connected with the input end s of described M9 module by output terminal O8, described M9 module is connected with the input end i2 of described M12 module by output terminal O9.
Further, described automatic electricity generation control system is connected with the input end i2 of described M9 module, and the output terminal O9 of described M9 module is connected with the input end i1 of described M9 module, and the output terminal O9 of described M9 module is connected with the input end i2 of described M1 module; Described automatic electricity generation control system is connected with the input end of described M10 module, the output terminal O10 of described M10 module is connected with the input end of described M11 module, the output terminal O11 of described M11 module is connected with the input end s of described M12 module, and the output terminal O12 of described M12 module is also connected with the input end i1 of described M12 module;
Described M4 module is connected with the output terminal O3 of described M3 module by input end r, and described M7 module is connected with the output terminal O6 of described M6 module by input end i.
In the present embodiment, solve disposing with the minor swing undesired signal in minor swing interference AGC signal that Power Plant is received, thus improve the technical matters of power quality from source, and improve the Availability Index of Power Plant AGC examination.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (2)
1. a large-scale thermal power machine group Automation generation control signal disturbance disposal system, comprise grid dispatching center, power plant RTU RTU, power plant's automatic electricity generation control system, described grid dispatching center passes through described RTU by AGC Signal transmissions to described power plant automatic electricity generation control system, it is characterized in that, also comprise subtraction block, absolute value block, high limit module, not gate module M5, digital quantity time delay module, not gate module M8, analog quantity handover module M9 and analog quantity handover module M12; Concrete,
The input end i1 of the automatic electricity generation control system and described subtraction block that transmit described AGC signal is connected, described subtraction block is connected with the input end of described absolute value block by output terminal O1, described absolute value block limits the input end i of module to be connected by output terminal O2 with described height, described high limit module is connected with the input end of described not gate module M5 by output terminal O4, described not gate module M5 is connected with the input end i of described digital quantity time delay module by output terminal O5, described digital quantity time delay module is connected with the input end of described not gate module M8 by output terminal O7, described not gate module M8 is connected with the input end s of described analog quantity handover module M9 by output terminal O8, described analog quantity handover module M9 is connected with the input end i2 of described analog quantity handover module M12 by output terminal O9.
2. the system as claimed in claim 1, is characterized in that, described system also comprises constant module M3, constant module M6, analog quantity Quality estimation module and not gate module M11;
Described automatic electricity generation control system is connected with the input end i2 of described analog quantity handover module M9, the output terminal O9 of described analog quantity handover module M9 is connected with the input end i1 of described analog quantity handover module M9, and the described output terminal O9 of analog quantity handover module M9 is connected with the input end i2 of described subtraction block; Described automatic electricity generation control system is connected with the input end of described analog quantity Quality estimation module, the output terminal O10 of described analog quantity Quality estimation module is connected with the input end of described not gate module M11, the output terminal O11 of described not gate module M11 is connected with the input end s of described analog quantity handover module M12, and the output terminal O12 of described analog quantity handover module M12 is also connected with the input end i1 of described analog quantity handover module M12;
Described high limit module is connected with the output terminal O3 of described constant module M3 by input end r, and described digital quantity time delay module is connected with the output terminal O6 of described constant module M6 by input end i.
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