CN103414195B - The voltage powerless control system of a kind of small power station concentrated area - Google Patents

The voltage powerless control system of a kind of small power station concentrated area Download PDF

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Publication number
CN103414195B
CN103414195B CN201310373728.4A CN201310373728A CN103414195B CN 103414195 B CN103414195 B CN 103414195B CN 201310373728 A CN201310373728 A CN 201310373728A CN 103414195 B CN103414195 B CN 103414195B
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China
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hydropower station
voltage
small hydropower
load tap
small
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CN201310373728.4A
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CN103414195A (en
Inventor
董建达
竺佳一
秦立明
邬军波
杨晓华
毛以平
张明达
裘哲峰
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State Grid Corp of China SGCC
Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Abstract

The present invention discloses the voltage powerless control system of a kind of small power station concentrated area, comprising: be separately positioned in each small hydropower station, to the on-load tap-changing transformer that the online voltage of described small hydropower station regulates; Be arranged on the series voltage regulator on the interconnective distribution line of each small hydropower station; Be connected with described multiple on-load tap-changing transformer and described series voltage regulator respectively, the controller that the floating information according to the online voltage of each small hydropower station described controls described multiple on-load tap-changing transformer and described series voltage regulator.By arranging on-load tap-changing transformer and arrange series voltage regulator in each small hydropower station on the interconnective distribution line of each small hydropower station in the present invention, can regulate the online voltage of each small hydropower station, avoid the online overtension of certain small hydropower station, cause other small hydropower station cannot normal power generation situation occur.

Description

The voltage powerless control system of a kind of small power station concentrated area
Technical field
The present invention relates to the voltage powerless control system of a kind of small power station concentrated area.
Background technology
Small power station is the abbreviation of small hydropower station.At present, in the transformer station that small hydropower plants in mountainous area network connection is more, ubiquity 10KV bus, 10KV distribution line end, the situation that low-voltage customer customer side rate of qualified voltage is lower.
Such as, when the wet season, direction of tide is for flow to substation busbars by small power station, and each small power station, in order to generate electricity at full capacity, must raise its online voltage.Because each small power station is interrelated, if any one raises online voltage, all can cause other small power station cannot normal power generation.
Therefore need the voltage powerless control system of a kind of small power station concentrated area badly, unified management is not had to existing small power station voltage, cause some small power station the problem of normal power generation to solve.
Summary of the invention
For solving the problem, the invention provides the voltage powerless control system of a kind of small power station concentrated area, centralized control carried out to small power station's voltage, prevent some small power station raise online voltage time, cause other small power station cannot normal power generation phenomenon occur.
The invention provides the voltage powerless control system of a kind of small power station concentrated area, comprising:
Be separately positioned in each small hydropower station, to the on-load tap-changing transformer that the online voltage of described small hydropower station regulates;
Be arranged on the series voltage regulator on the interconnective distribution line of each small hydropower station;
Be connected with described multiple on-load tap-changing transformer and described series voltage regulator respectively, the controller that the floating information according to the online voltage of each small hydropower station described controls described multiple on-load tap-changing transformer and described series voltage regulator.
As can be seen from technique scheme, by arranging on-load tap-changing transformer and arrange series voltage regulator in each small hydropower station on the interconnective distribution line of each small hydropower station in the present invention, can regulate the online voltage of each small hydropower station, avoid the online overtension of certain small hydropower station, cause other small hydropower station cannot normal power generation situation occur.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the voltage powerless control system of a kind of small power station provided by the invention concentrated area.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
With reference to figure 1, show the structural representation of the wherein voltage powerless control system in region of a kind of small power station shown in the present invention, within the system, comprising:
Multiple on-load tap-changing transformer, the number of described on-load tap-changing transformer sets according to the number of interconnective small hydropower station, is provided with an on-load tap-changing transformer in each small hydropower station.It is example that the embodiment of the present invention provides to be in series with three small hydropower stations, as in Fig. 1, is arranged on the first on-load tap-changing transformer A1 in small hydropower station 1; Be arranged on the second on-load tap-changing transformer A2 in small hydropower station 2; Be arranged on the 3rd on-load tap-changing transformer A3 in small hydropower station 3.
Described first on-load tap-changing transformer A1, the second on-load tap-changing transformer A2 and the 3rd on-load tap-changing transformer A3 are used for regulating the online voltage of each small hydropower station at its place.
The interconnective distribution line of each small hydropower station is provided with a series voltage regulator B, the setting position not circumscribed of described series voltage regulator B.
In the master control electric substation of each small hydropower station, be provided with a controller C, described controller C respectively with described first on-load tap-changing transformer A1, second on-load tap-changing transformer A2 and the 3rd on-load tap-changing transformer A3 and described series voltage regulator B is connected, according to the floating situation of the online voltage of each small hydropower station, to the first on-load tap-changing transformer A1, second on-load tap-changing transformer A2 and the 3rd on-load tap-changing transformer A3 and described series voltage regulator B regulates, make the first on-load tap-changing transformer A1, second on-load tap-changing transformer A2 and the 3rd on-load tap-changing transformer A3 and described series voltage regulator B can regulate the voltage in the substation line of entirety, ensure that each small hydropower station can normal power generation.
As in Fig. 1, the general route busbar voltage U0 of electric substation, the online voltage U 1 of small hydropower station 1 correspondence, the online voltage U 2 of small hydropower station 2 correspondence, public power transformation voltage U 3, U5, and the online voltage U 4 of small hydropower station 3 correspondence.
When the wet season, the reason that the voltage of U0, U1, U2, U3, U4 and U5 surmounts preset value is generally: direction of tide is for flow to substation busbars by small power station, each small power station is in order to generate electricity at full capacity, must raise its online voltage, each small power station is interrelated, if any one raises online voltage, all can cause other small power station cannot normal power generation, so each small power station is in order to meet the economic interests of oneself, raising system voltage separately, making system voltage be in a kind of state of unordered management.
Voltage powerless control system provided by the invention, in each small power station, on-load tap-changing transformer is set, and at the middle series voltage regulator of distribution line, the higher small power supply voltage of indivedual online is finely tuned, and centralized control is carried out to each on-load tap-changing transformer and voltage regulator.Controller arranges electric substation, gathers the voltage signal of each node, and is preset in whole system electrical network by the voltage signal of collection, according to the change information of each voltage signal, carries out regulable control to on-load voltage regulation time variant voltage.
In dry season, U3, U5 exceed the reason of preset voltage value, are generally: dry season, small power station did not generate electricity, and direction of tide is to distribution line end by electric substation.The distribution line of small power station's access mostly is mountain route, and radius of electricity supply is longer, causes the upper pressure of line end lower, low-voltage customer low voltage under institute's public change that connects.
In voltage powerless control system provided by the invention, by series voltage regulator in overall circuit, distribution line terminal voltage is regulated, and centralized control is carried out to voltage regulator.
Finally, also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above the voltage powerless control system of a kind of small power station provided by the present invention concentrated area is described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands core concept of the present invention for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.

Claims (1)

1. a voltage powerless control system for small power station concentrated area, is characterized in that, comprising:
Be separately positioned in each small hydropower station, to the on-load tap-changing transformer that the online voltage of described small hydropower station regulates;
Be arranged on the series voltage regulator on the interconnective distribution line of each small hydropower station;
Be connected with multiple on-load tap-changing transformer and described series voltage regulator respectively, the controller that the floating information according to the online voltage of each small hydropower station described controls described multiple on-load tap-changing transformer and described series voltage regulator;
Wherein, described controller is arranged on electric substation, gathers the voltage signal of each node, and is preset in whole system electrical network by the voltage signal of collection, according to the change information of each voltage signal, carries out regulable control to described on-load tap-changing transformer;
Further, described controller carries out centralized control to series voltage regulator, regulates distribution line terminal voltage;
Wherein, the online voltage of described controller to each small hydropower station described regulates, avoid the online overtension of small hydropower station described in certain, cause small hydropower station described in other situation of normal power generation to occur, thus ensure that each small hydropower station described can normal power generation.
CN201310373728.4A 2013-08-23 2013-08-23 The voltage powerless control system of a kind of small power station concentrated area Active CN103414195B (en)

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CN104009480B (en) * 2014-05-26 2016-08-24 广东电网公司电力科学研究院 Voltage powerless control method based on voltage and reactive power control system and system
CN105071399B (en) * 2015-08-26 2017-05-03 国网山东省电力公司 Voltage and reactive power coordinated control system based on interaction and coordination of primary and distributed networks

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CN203406614U (en) * 2013-08-23 2014-01-22 国家电网公司 Voltage reactive power control system of small hydropower concentrated area

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JP2003102128A (en) * 2001-09-26 2003-04-04 Tohoku Electric Power Co Inc Self-contained bidirectional automatic voltage- regulating apparatus

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CN203406614U (en) * 2013-08-23 2014-01-22 国家电网公司 Voltage reactive power control system of small hydropower concentrated area

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