201120467 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種變頻電壓產生裝置，尤指一種適用 於高壓電抗器電壓試驗、變壓器感應及部分放電試驗之變 頻電壓產生裝置。 【先前技術】 般而5，電器迴路的主要組成部分有電阻、電容和 電抗。電抗係具有抑制電流變化的作用，f力系統中所採 用的電抗器’纟要係用來限制短路電流。當然，電抗器也 可在濾波器中與電容器串聯、或並聯，以限制電器迴路 的高頻諧波。 現今電力系統中常用的高壓電抗器，其額定電壓為單 相360kV '二相345kV、三相i61kV、或三相33kV等。於言 壓電抗器的電壓試驗t，並聯迴路欲達所需之試驗電壓回 其輔助變壓器之體積、電壓均要相當於高壓電抗器之等級 以上’在施加調整上相當不容易。 〇 一般而言，使用發電機 '或變頻發電機進行高壓電抗 器的電Μ試驗，發電機不但體積大、電源取得不易，且其 所發出電壓波形之電源品質要達到量測部份放電之電源亦 相當不易。因此，確實有必要針對此一課題進行改進。 【發明内容】 201120467 >有鑑於此，本發明提供—種變頻電壓產生裝置，俾能 有效取代發電機電源以進行高壓電抗器電壓試驗。201120467 VI. Description of the Invention: [Technical Field] The present invention relates to a variable frequency voltage generating device, and more particularly to a variable frequency voltage generating device suitable for high voltage reactor voltage test, transformer induction and partial discharge test. [Prior Art] As usual, the main components of the electrical circuit are resistance, capacitance and reactance. The reactance system has the effect of suppressing the change of current, and the reactor used in the f-force system is used to limit the short-circuit current. Of course, the reactor can also be connected in series or in parallel with the capacitor in the filter to limit the high frequency harmonics of the electrical circuit. High-voltage reactors commonly used in power systems today are rated for single-phase 360kV 'two-phase 345kV, three-phase i61kV, or three-phase 33kV. In the voltage test of the piezo reactor, the parallel circuit is required to reach the required test voltage and the volume and voltage of the auxiliary transformer are equal to the level of the high-voltage reactor. 'It is not easy to apply adjustment. 〇 In general, the generator's or variable frequency generator is used to perform the electric enthalpy test of the high-voltage reactor. The generator is not only bulky, but also difficult to obtain the power supply, and the power quality of the voltage waveform emitted by the generator must reach the measured partial discharge. The power supply is also quite difficult. Therefore, it is indeed necessary to improve on this subject. SUMMARY OF THE INVENTION 201120467 > In view of this, the present invention provides a variable frequency voltage generating device that can effectively replace a generator power supply for high voltage reactor voltage testing.
尚壓電抗器電壓試驗配置包含一電阻、一電容塔、一 高壓電抗器、一第一第容、一第二電容、及一操作控：台， ，電阻係電性連接至該電料，該電料係電性連接至該 j電抗器，it第—第容係電性連接至該高壓電抗器、該 =容，、及該第二電容’該操作控制台係電性連接至該第 第谷、该第二電容、及該變頻電壓產生裝置。 /本發明之變頻電壓產生裳置包括：一輔助變壓器，其 係電性連接至該電阻；以及—變頻發f機，其係電性連接 f該輔助變壓器；纟中’該變頻發電機之頻率係為該電容 塔、及該高壓電抗器之共振頻率，係致使該變頻發電機提 供予該向壓電抗器電壓試驗之電壓為高電壓。 其次，本發明之變頻電壓產生裝置，亦可有效取代發 電機電源以進行變壓器感應及部分放電試驗。 變壓器感應及部分放電試驗配置係包含一變壓器、一 電容單元、一阻抗單元、一第一第容、一第二電容、及一 操作控制台，該變壓器包含有一一次侧、及一二次側。 本發明之變頻電壓產生裝置包括：一輔助變壓器，其 係電性連接至該變壓器之一次側；一濾波電容器，其係電 性連接至該輔助變壓器；以及一變頻發電機，其係電性連 接至該濾波電容器；其中，該電容單元係電性連接至該變 壓器之二次側及該阻抗單元，該第—第容係電性連接至該 I壓器之一次側、及該電容單元，該操作控制台係電性連 201120467 接至該第一第容、該第二電容、及該變頻發電機，該變頻 發電機係供予該變壓器感應及部分放電試驗之電壓。 【實施方式】 凊先參考圖1，圖1係本發明一較佳實施例之高覆電抗 器電壓试驗系統架構圖。如圖所示，本發明所提供之變頻 電壓產生裝置1係適用於一高壓電抗器電壓試驗配置。該高 壓電抗器電壓試驗配置包含一電阻21' 一電容塔22、一古 壓電抗器23、一第一第容24、一第二電容25、及一操作控 制台26。電阻21係電性連接至電容塔22，較佳地，該電阻 21係為一可調式電阻。電容塔22係電性連接至高壓電抗器 23，較佳地，該電容塔22係為一可調式電容塔，其包含有 一滤波電抗221 ’該電容塔22之示意圖如圖2所示。第—電 容24係電性連接至高壓電抗器23、電容塔22、及第二電容 25。操作控制台26係電性連接至第一第容24、第二電容25、 及變頻電壓產生裝置1。 變頻電壓產生裝置1包括一輔助變壓器U、及一變頻發 電機12。輔助變壓器η係電性連接至電阻21，變頻發電機 12係電性連接至輔助變壓器u。其中，該變頻發電機12之 頻率係為電容塔22、及高壓電抗器23之共振頻率。經由將 ^:頻發電機12之頻率調整為共振頻率，係可致使變頻發電 機12提供予高壓電抗器23電壓試驗之電壓值為高電壓。 關於共振頻率的原理及計算方式，請參考圖3，圖3係 為一 RLC串聯電路圖。如圖所示，RLC串聯電路中，包含一 201120467 交流電源30、一電阻31、一電抗32、及—電容33。電路之 總電壓為E，總電流為I。由於該電路係為串聯，故電路中 各元件之電流相等： I=Ir=Il=Ic， 其中，電阻3 1之電阻值為R，電阻3 !之電壓係與電流同相， 其電阻電壓為：The piezoelectric transformer voltage test configuration includes a resistor, a capacitor tower, a high voltage reactor, a first capacitance, a second capacitor, and an operation control: a resistor is electrically connected to the electricity The electric material is electrically connected to the j reactor, and the first-first system is electrically connected to the high-voltage reactor, the capacitor, and the second capacitor 'the operation console is electrically Connected to the first trough, the second capacitor, and the variable voltage generating device. The variable frequency voltage generating skirt of the present invention comprises: an auxiliary transformer electrically connected to the resistor; and - an inverter generating machine electrically connected to the auxiliary transformer; the frequency of the variable frequency generator The resonance frequency of the capacitor tower and the high-voltage reactor is such that the voltage supplied by the inverter generator to the piezoelectric reactor voltage test is a high voltage. Secondly, the variable frequency voltage generating device of the present invention can also effectively replace the generator power source for transformer induction and partial discharge testing. The transformer induction and partial discharge test configuration includes a transformer, a capacitor unit, an impedance unit, a first capacitor, a second capacitor, and an operation console. The transformer includes a primary side and a secondary side. The variable frequency voltage generating device of the present invention comprises: an auxiliary transformer electrically connected to the primary side of the transformer; a filter capacitor electrically connected to the auxiliary transformer; and a variable frequency generator electrically connected To the filter capacitor, wherein the capacitor unit is electrically connected to the secondary side of the transformer and the impedance unit, the first capacitor is electrically connected to the primary side of the voltage regulator, and the capacitor unit, The operation console is connected to the first, second, and the variable frequency generators, and the variable frequency generator supplies voltages to the transformer induction and partial discharge tests. [Embodiment] Referring first to Figure 1, Figure 1 is a block diagram of a high-voltage reactor voltage test system in accordance with a preferred embodiment of the present invention. As shown, the variable frequency voltage generating device 1 of the present invention is suitable for use in a high voltage reactor voltage test configuration. The high voltage reactor voltage test configuration includes a resistor 21', a capacitor tower 22, an ancient piezoelectric actuator 23, a first capacitance 24, a second capacitor 25, and an operation control station 26. The resistor 21 is electrically connected to the capacitor tower 22. Preferably, the resistor 21 is an adjustable resistor. The capacitor tower 22 is electrically connected to the high voltage reactor 23. Preferably, the capacitor tower 22 is a tunable capacitor tower including a filter reactance 221'. The schematic diagram of the capacitor tower 22 is as shown in FIG. The first capacitor 24 is electrically connected to the high voltage reactor 23, the capacitor tower 22, and the second capacitor 25. The operation console 26 is electrically connected to the first capacitance 24, the second capacitance 25, and the variable voltage generating device 1. The variable frequency voltage generating device 1 includes an auxiliary transformer U and an inverter motor 12. The auxiliary transformer η is electrically connected to the resistor 21, and the variable frequency generator 12 is electrically connected to the auxiliary transformer u. The frequency of the variable frequency generator 12 is the resonant frequency of the capacitor tower 22 and the high voltage reactor 23. By adjusting the frequency of the frequency generator 12 to the resonance frequency, the voltage value of the voltage test provided by the variable frequency generator 12 to the high voltage reactor 23 is high. For the principle and calculation method of the resonance frequency, please refer to FIG. 3, which is an RLC series circuit diagram. As shown in the figure, the RLC series circuit includes a 201120467 AC power source 30, a resistor 31, a reactance 32, and a capacitor 33. The total voltage of the circuit is E and the total current is I. Since the circuit is connected in series, the currents of the components in the circuit are equal: I=Ir=Il=Ic, wherein the resistance of the resistor 3 1 is R, and the voltage of the resistor 3 is in phase with the current, and the resistance voltage is:
Er=IR，Er=IR,
電抗32之電抗值為L、感抗值為xL，電抗32之電壓係超前電 流90度相角，其電抗電壓為： r EL=IXL， 電谷33之電容值為〇容抗值為\(：，電容33之電流係超前電 壓90度相角，其電容電壓為： EC=IXC， 總電壓E係為ER、EL、及Ec之向量合，由於汛與仏反相，故 總電壓E即為IR與I(Xl_Xc)之向量合： E = +(IXL -ixc)2 = Iy[RrT(XL -xcf， 备感抗XL與容抗Xc大小相等時，電流J達到最大值，並且與 總電壓E同相，此即共振現象，其頻率即為共振頻率。其中， ，Ec=1/wc，w係為相位角，當Xl=Ec時，亦即 WL=1/WC，可求得共振頻率：The reactance value of the reactance 32 is L, the inductive reactance value is xL, and the voltage of the reactance 32 is the phase angle of the lead current of 90 degrees. The reactance voltage is: r EL=IXL, and the capacitance value of the electric valley 33 is the capacitance resistance value of \( The current of the capacitor 33 is a phase angle of 90 degrees. The capacitor voltage is: EC=IXC, and the total voltage E is the vector combination of ER, EL, and Ec. Since 汛 and 仏 are reversed, the total voltage E is Is the vector of IR and I(Xl_Xc): E = +(IXL -ixc)2 = Iy[RrT(XL -xcf, when the anti-XL and the capacitive reactance Xc are equal in magnitude, the current J reaches the maximum value, and the total The voltage E is in phase, which is the resonance phenomenon, and its frequency is the resonance frequency. Among them, Ec=1/wc, w is the phase angle, and when Xl=Ec, that is, WL=1/WC, the resonance frequency can be obtained. :
2n4LC 201120467 %^電^32與電谷33之共振頻率。將變頻發電機12之頻率 =厂為電容塔22、及高壓電抗扣之共振頻率，即可提供 予尚壓電抗器23’以進行高Μ抗器23之電屋試驗。 π除此之外，當共振迴路達所需之試驗電壓，高壓電抗 ，，或迴路上發生異常時，係立即失去共振點而降壓。 此種迴路只有降壓條件無再昇壓之危害，崎壓速度快 速’不會危及高壓電抗器23。 其人，本發明之變頻電壓產生裝置丨亦可適用於一變壓 器感應，部分放電試驗配置。請參考圖4,圖4係本發明另 -較佳實施例之變壓器感應及部分放電試驗配置示意圖。 如圖所示，言玄變壓器感應、及部分放電試㉟配置係包含—變 廢器4卜-電容單元42、—阻抗單元43、—第—第容44、 一第二電容4 5、一部分放電量側儀4 6、及一操作控制台4 7。 變壓器41包含有--次側41 a、及一二次側41 b。 本發明之變頻電壓產生裝置1包括：一輔助變壓器Η、 一變頻發電機12、及一濾波電容器13。輔助變壓器丨丨係電 性連接至變壓器41之一次側4U，濾波電容器13係電性連接 至輔助變壓器11、及變頻發電機丨2,較佳地，該渡波電容 器13係由複數個電容串並聯組成。電容單元42係電性連接 至變壓器41之二次側4 lb、及阻抗單元43。第一第容44係電 性連接至變壓器41之二次側4 lb、及電容單元42 ^操作控制 台47係電性連接至第一第容44、第二電容45、及變頻發電 機12。部分放電量側儀46係電性連接至阻抗單元4;^經由 此一配置方式，本發明之變頻發電機12係可供予該變壓器 201120467 感應及β 77放電4驗之所需電I，並有效取代發電機電 源二且變頻電藶產生裝置!之移動性高、不佔空間，係使變 塵器感應及部分放電試驗能有效地進行。 然而，上述實施例僅係為了方便說明而舉例而已，本 發明所主張之權利範圍自應以申請專利範圍所述為準，而 非僅限於上述實施例。 【圖式簡單說明】 圖1係本發明一較佳實施例之高壓電抗器電壓試驗***架 構圖。 ^ 圖2係本發明一較佳實施例之電容塔示意圖。 圖3係本發明一較佳實施例之RLC串聯電路圖。 圖4係本發明另一較佳實施例之變壓器感應及部分放電試 驗系統架構圖。 【主要元件符號說明】 變頻電壓產生裝置 12 變頻發電機 21，31電阻 23 高壓電抗器 25,45第二電容 221 濾波電抗 30 交流電源 33 電容 11 辅助變壓器 13 濾波電容器 22 電容塔 24,44第一第容 26,47操作控制台 32 電抗 9 201120467 41 變壓器 42 電容單元 43 阻抗單元 46 部分放電量側儀 41a 一次側 41b 二次側2n4LC 201120467 % ^ electric ^ 32 and electric valley 33 resonance frequency. The frequency of the inverter generator 12 = the resonant frequency of the capacitor tower 22 and the high voltage reactance buckle can be supplied to the piezoelectric actuator 23' for the electric house test of the high reactor 23. In addition to π, when the resonant circuit reaches the required test voltage, high-voltage reactance, or an abnormality occurs in the loop, the resonance point is immediately lost and the voltage is reduced. This type of circuit only has the disadvantage of no further step-down of the step-down condition, and the rapid pressure of the bar is not jeopardized by the high-voltage reactor 23. The inverter voltage generating device of the present invention can also be applied to a transformer induction and partial discharge test configuration. Please refer to FIG. 4. FIG. 4 is a schematic diagram of a transformer induction and partial discharge test configuration according to another preferred embodiment of the present invention. As shown in the figure, the meta-transformer induction and partial discharge test 35 configuration includes a variable-dissipator 4-capacitor unit 42, an impedance unit 43, a first-portion 44, a second capacitor 45, and a partial discharge. The side meter 4 6 and an operation console 47. The transformer 41 includes a secondary side 41a and a secondary side 41b. The variable frequency voltage generating device 1 of the present invention comprises: an auxiliary transformer Η, a variable frequency generator 12, and a filter capacitor 13. The auxiliary transformer is electrically connected to the primary side 4U of the transformer 41. The filter capacitor 13 is electrically connected to the auxiliary transformer 11 and the variable frequency generator 丨2. Preferably, the wave capacitor 13 is connected in series by a plurality of capacitors. composition. The capacitor unit 42 is electrically connected to the secondary side 4 lb of the transformer 41 and the impedance unit 43. The first cavity 44 is electrically connected to the secondary side 4 lb of the transformer 41, and the capacitor unit 42 is electrically connected to the first cavity 44, the second capacitor 45, and the variable frequency generator 12. The partial discharge amount side meter 46 is electrically connected to the impedance unit 4; via this configuration, the variable frequency generator 12 of the present invention can be used to sense the required power I of the transformer 201120467 and the beta 77 discharge 4, and It effectively replaces the generator power supply 2 and the frequency conversion power generation device! The mobility is high and the space is not occupied, so that the dust detector induction and the partial discharge test can be effectively performed. However, the above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be based on the scope of the claims, and is not limited to the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of a high voltage reactor voltage test system according to a preferred embodiment of the present invention. Figure 2 is a schematic view of a capacitor tower in accordance with a preferred embodiment of the present invention. 3 is a circuit diagram of an RLC series circuit in accordance with a preferred embodiment of the present invention. Figure 4 is a block diagram of a transformer induction and partial discharge test system in accordance with another preferred embodiment of the present invention. [Main component symbol description] Variable frequency voltage generator 12 Variable frequency generator 21, 31 resistor 23 High voltage reactor 25, 45 Second capacitor 221 Filter reactance 30 AC power supply 33 Capacitor 11 Auxiliary transformer 13 Filter capacitor 22 Capacitor tower 24, 44 First volume 26, 47 operation console 32 reactance 9 201120467 41 transformer 42 capacitor unit 43 impedance unit 46 partial discharge side meter 41a primary side 41b secondary side
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