TWI476417B - Electric power system - Google Patents
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- TWI476417B TWI476417B TW101136712A TW101136712A TWI476417B TW I476417 B TWI476417 B TW I476417B TW 101136712 A TW101136712 A TW 101136712A TW 101136712 A TW101136712 A TW 101136712A TW I476417 B TWI476417 B TW I476417B
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Description
本發明是有關於一種系統，特別是指一種電力系統。The present invention relates to a system, and more particularly to a power system.
目前國家正在推動節能減碳，許多技術開發如太陽能、風力發電或電動馬達再生技術等，都需要有電力系統的管理機制加以配合。目前的技術對於大型電力系統的每一電力網內故障的診斷，需要利用多個感測元件及多個儀表，且不同電力網之間缺乏有效整合及偵測故障的機制。At present, the country is promoting energy conservation and carbon reduction. Many technologies such as solar energy, wind power generation or electric motor regeneration technology need to have the management mechanism of the power system to cooperate. The current technology requires the use of multiple sensing components and multiple meters for the diagnosis of faults in each power grid of a large power system, and there is no mechanism for effective integration and fault detection between different power grids.
因此，本發明之目的，即在提供一種可以解決先前技術至少部分問題的電力系統。Accordingly, it is an object of the present invention to provide a power system that can solve at least some of the problems of the prior art.
於是，根據本發明的一層面，本發明電力系統包含一直流電力網、一逆變模組、一交流電力網及一電力管理模組。Thus, in accordance with one aspect of the present invention, the power system of the present invention includes a DC power network, an inverter module, an AC power network, and a power management module.
該直流電力網用於產生一直流電，並輸出多個分別反應自身內部多個狀態的直流感測信號。The DC power network is configured to generate a constant current, and output a plurality of DC sensing signals respectively reflecting a plurality of states within itself.
該逆變模組電連接該直流電力網以接收該直流電並轉換為一交流電。The inverter module is electrically connected to the DC power network to receive the DC power and convert it into an AC power.
該交流電力網電連接該逆變模組以接收該交流電。The AC power grid is electrically connected to the inverter module to receive the AC power.
該電力管理模組包括一直流切換器、一直流電儀表及一控制器。The power management module includes a DC switch, a DC instrument, and a controller.
該直流切換器電連接該直流電力網以接收該等直流感測信號，且受控制選擇該等直流感測信號其中之一作為一 直流待測信號輸出。The DC switch is electrically connected to the DC power network to receive the DC sensing signals, and is controlled to select one of the DC sensing signals as one DC test signal output.
該直流電儀表電連接該直流切換器以接收該直流待測信號，據此產生一直流測量信號。The DC instrument is electrically connected to the DC switch to receive the DC test signal, thereby generating a DC measurement signal.
該控制器電連接該直流切換器以控制該直流切換器選擇該等直流感測信號，電連接該直流電儀表以接收該直流測量信號，據此判斷該直流電力網是否故障。The controller is electrically connected to the DC switch to control the DC switch to select the DC sensing signals, and electrically connect the DC instrument to receive the DC measurement signal, and determine whether the DC power network is faulty.
根據本發明的另一層面，本發明電力系統包含一直流電力網、一逆變模組、一交流電力網及一電力管理模組。According to another aspect of the present invention, the power system of the present invention comprises a DC power network, an inverter module, an AC power network, and a power management module.
該直流電力網用於產生一直流電。The DC power grid is used to generate a constant current.
該逆變模組電連接該直流電力網以接收該直流電並轉換為一交流電。The inverter module is electrically connected to the DC power network to receive the DC power and convert it into an AC power.
該交流電力網電連接該逆變模組以接收該交流電，並輸出多個分別反應自身內部多個狀態的交流感測信號。The AC power grid is electrically connected to the inverter module to receive the AC power, and outputs a plurality of AC sensing signals respectively reflecting a plurality of states inside thereof.
該電力管理模組，包括一交流切換器一交流電儀表一控制器。The power management module comprises an AC switch, an AC power meter and a controller.
該交流切換器電連接該交流電力網以接收該等交流感測信號，且受控制選擇該等交流感測信號其中之一作為一交流待測信號輸出。The AC switch is electrically connected to the AC power network to receive the AC sensing signals, and is controlled to select one of the AC sensing signals to be output as an AC signal to be tested.
該交流電儀表電連接該交流切換器以接收該交流待測信號，據此產生一交流測量信號。The AC instrument is electrically connected to the AC switch to receive the AC test signal, thereby generating an AC measurement signal.
該控制器電連接該交流切換器以控制該交流切換器選擇該等交流感測信號，電連接該交流電儀表以接收該交流測量信號，據此判斷該交流電力網是否故障。The controller is electrically connected to the AC switch to control the AC switch to select the AC sensing signals, and is electrically connected to the AC meter to receive the AC measurement signal, thereby determining whether the AC power network is faulty.
本發明之功效在於：利用該直流切換器切換不同直流 感測信號，僅需使用一個直流電儀表，或利用該交流切換器切換不同交流感測信號，僅需使用一個交流電儀表，可以減少儀表的數量。The effect of the invention is to switch different DCs by using the DC switcher To sense the signal, you only need to use one DC instrument, or use the AC switch to switch between different AC sensing signals. Only one AC instrument is needed to reduce the number of instruments.
有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之一個較佳實施例的詳細說明中，將可清楚的呈現。The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.
參閱圖1，本發明電力系統之較佳實施例包含一直流電力網1、一逆變模組3、一交流電力網2及一電力管理模組4。Referring to FIG. 1, a preferred embodiment of the power system of the present invention includes a DC power network 1, an inverter module 3, an AC power network 2, and a power management module 4.
該直流電力網1用於產生一直流電，並輸出多個分別反應自身內部多個狀態的直流感測信號。該直流電力網1可以是一太陽能發電設備、一風力發電設備或其它，且包括多個直流感測元件11及至少一個直流防護元件12。以下舉該直流電力網1包括多個直流防護元件12為例進行說明。The DC power grid 1 is configured to generate a constant current, and output a plurality of DC sensing signals respectively reflecting a plurality of states within itself. The DC power grid 1 can be a solar power plant, a wind power plant or the like, and includes a plurality of DC sensing components 11 and at least one DC shield component 12. Hereinafter, the DC power grid 1 includes a plurality of DC protection elements 12 as an example for description.
每一直流感測元件11用於偵測該直流電力網1內部相對應之狀態的電壓及電流，以輸出該相對應直流感測信號。每一直流感測信號包括電壓部分及電流部分來分別反應該相對應狀態的電壓及電流。在本實施例中，每一直流感測元件11包括一個分壓器111(見圖2)及一個分流器112(見圖2)，該分壓器111及該分流器112分別用於偵測該相對應狀態的電壓及電流，以產生該相對應直流感測信號的電壓部分及電流部分。Each of the influencing elements 11 is used to detect the voltage and current in the corresponding state inside the DC power grid 1 to output the corresponding DC sensing signal. Each of the continuous influenza signals includes a voltage portion and a current portion to respectively reflect the voltage and current of the corresponding state. In this embodiment, each DC sensing component 11 includes a voltage divider 111 (see FIG. 2) and a current divider 112 (see FIG. 2). The voltage divider 111 and the current divider 112 are respectively used to detect the voltage divider 111. The voltage and current of the corresponding state are generated to generate a voltage portion and a current portion of the corresponding DC sensing signal.
每一直流防護元件12用於排除故障迴路，並受控啟動。Each DC protection element 12 is used to troubleshoot the fault circuit and is controlled to start.
該逆變模組3電連接該直流電力網1以接收該直流電，並在開機後輸出一開機信號及轉換該直流電為一交流電。The inverter module 3 is electrically connected to the DC power network 1 to receive the DC power, and outputs a power-on signal and converts the DC power to an AC power after being turned on.
該交流電力網2電連接該逆變模組3以接收該交流電，並輸出多個分別反應自身內部多個狀態的交流感測信號。該交流電力網包括多個交流感測元件21及至少一個交流防護元件22。以下舉該交流電力網2包括多個交流防護元件22為例進行說明。The AC power grid 2 is electrically connected to the inverter module 3 to receive the AC power, and outputs a plurality of AC sensing signals respectively reflecting a plurality of states inside thereof. The AC power grid includes a plurality of AC sensing elements 21 and at least one AC protection element 22. Hereinafter, the AC power grid 2 includes a plurality of AC protection elements 22 as an example for description.
每一交流感測信號包括電壓部分及電流部分來分別反應該相對應狀態的電壓及電流。在本實施例中，每一交流感測元件21包括一個比壓器211(見圖3)及一個比流器212(見圖3)，該比壓器211及該比流器212分別用於偵測該相對應狀態的電壓及電流，以產生該相對應交流感測信號的電壓部分及電流部分。Each of the alternating sensing signals includes a voltage portion and a current portion to respectively reflect the voltage and current of the corresponding state. In the present embodiment, each of the AC sensing elements 21 includes a voltage comparator 211 (see FIG. 3) and a current comparator 212 (see FIG. 3). The voltage comparator 211 and the current comparator 212 are respectively used for Detecting the voltage and current of the corresponding state to generate a voltage portion and a current portion of the corresponding AC sensing signal.
每一交流防護元件22用於排除故障迴路，並受控啟動。Each AC protection element 22 is used to troubleshoot the fault and is controlled to start.
該電力管理模組4包括一直流切換器41、一直流電儀表42、一交流切換器43、一交流電儀表44及一控制器45。The power management module 4 includes a DC switch 41, a DC power meter 42, an AC switch 43, an AC power meter 44, and a controller 45.
該直流切換器41電連接該直流電力網1以接收該等直流感測信號，且受控制選擇該等直流感測信號其中之一作為一直流待測信號輸出。The DC switch 41 is electrically connected to the DC power network 1 to receive the DC sense signals, and is controlled to select one of the DC sense signals as a DC test signal output.
該直流電儀表42電連接該直流切換器41以接收該直流待測信號，據此產生一直流測量信號。該直流量測信號具有一電壓值及一電流值，該電壓值及電流值分別對應作為該直流待測信號所反應之狀態的電壓及電流。在本實施例中，該直流電儀表42包括一個電壓計421(見圖2)及一個電流計422(見圖2)，該電壓計421及該電流計422分別用於測量該直流待測信號的電壓部分及電流部分，以產生該直流測量信號的電壓值及電流值。The DC meter 42 is electrically connected to the DC switch 41 to receive the DC test signal, thereby generating a DC measurement signal. The DC measurement signal has a voltage value and a current value, and the voltage value and the current value respectively correspond to voltages and currents that are the states of the DC signal to be tested. In the present embodiment, the DC meter 42 includes a voltmeter 421 (see FIG. 2) and an ammeter 422 (see FIG. 2). The voltmeter 421 and the galvanometer 422 are respectively used to measure the DC signal to be tested. a voltage portion and a current portion to generate a voltage value and a current value of the DC measurement signal.
該交流切換器43電連接該交流電力網2以接收該等交流感測信號，且受控制選擇該等交流感測信號其中之一作為一交流待測信號輸出。The AC switch 43 is electrically connected to the AC power network 2 to receive the AC sensing signals, and is controlled to select one of the AC sensing signals as an AC signal to be tested.
該交流電儀表44電連接該交流切換器43以接收該交流感測信號，據此產生一交流測量信號。該交流量測信號具有一電壓值及一電流值，該電壓值及電流值分別對應作為該交流待測信號的該交流感測信號所反應之狀態的電壓及電流。在本實施例中，該交流電儀表44包括一個電壓計441(見圖3)及一個電流計442(見圖3)，該電壓計441及該電流計442分別用於測量該交流待測信號的電壓部分及電流部分，以產生該交流測量信號的電壓值及電流值。The AC meter 44 is electrically coupled to the AC switch 43 to receive the AC sense signal, thereby generating an AC measurement signal. The AC measurement signal has a voltage value and a current value, and the voltage value and the current value respectively correspond to voltages and currents that are reflected by the AC sensing signal of the AC signal to be tested. In the present embodiment, the AC meter 44 includes a voltmeter 441 (see FIG. 3) and an ammeter 442 (see FIG. 3). The voltmeter 441 and the galvanometer 442 are respectively used to measure the AC signal to be tested. a voltage portion and a current portion to generate a voltage value and a current value of the AC measurement signal.
該控制器45電連接該直流切換器41以控制該直流切換器41選擇該等直流感測信號，電連接該直流電儀表42以接收該直流測量信號，據此判斷該直流電力網1是否故障。在本實施例中，該控制器45在該直流測量信號的電壓值超過一預設值而該直流測量信號的電流值低於另一預設 值時，判斷該直流電力網1故障。舉例而言，當該直流測量信號的電壓值超過一供電電壓(即超過該預設值)時，表示該直流電力網1是有在運轉且可供電，此時，若該直流測量信號的電流值很小或為零(即低於該另一預設值)，則可合理判斷輸電的電路有斷路或接地等異常情形。The DC switch 41 is electrically connected to the DC switch 41 to control the DC switch 41 to select the DC sense signals, and is electrically connected to the DC power meter 42 to receive the DC measurement signal, thereby determining whether the DC power network 1 is faulty. In this embodiment, the voltage value of the DC measurement signal exceeds a preset value by the controller 45, and the current value of the DC measurement signal is lower than another preset. At the time of the value, it is judged that the DC power network 1 is malfunctioning. For example, when the voltage value of the DC measurement signal exceeds a supply voltage (ie, exceeds the preset value), it indicates that the DC power network 1 is in operation and can be powered. At this time, if the current value of the DC measurement signal is If it is very small or zero (ie, lower than the other preset value), it can be reasonably judged that the circuit of the power transmission has abnormal conditions such as open circuit or grounding.
該控制器45還電連接該交流切換器43以控制該交流切換器43選擇該等交流感測信號，電連接該交流電儀表44以接收該交流測量信號，據此判斷該交流電力網2是否故障。在本實施例中，該控制器45在該交流測量信號的電壓值超過一預設值而該交流測量信號的電流值低於另一預設值時，判斷該交流電力網2故障。舉例而言，當該交流測量信號的電壓值超過一輸電電壓(即超過該預設值)時，表示該交流電力網2接收到電力，若該交流測量信號的電流值很小或為零(即低於該另一預設值)，則可合理判斷輸電的電路有斷路或接地等異常情形。The controller 45 is also electrically connected to the AC switch 43 to control the AC switch 43 to select the AC sensing signals, and is electrically connected to the AC meter 44 to receive the AC measurement signal, thereby determining whether the AC power network 2 is faulty. In this embodiment, the controller 45 determines that the AC power network 2 is faulty when the voltage value of the AC measurement signal exceeds a preset value and the current value of the AC measurement signal is lower than another preset value. For example, when the voltage value of the AC measurement signal exceeds a transmission voltage (ie, exceeds the preset value), it indicates that the AC power network 2 receives power, if the current value of the AC measurement signal is small or zero (ie, Below this other preset value, it is reasonable to judge that the circuit of the power transmission has an abnormal situation such as an open circuit or a ground.
該控制器45還電連接該等直流防護元件12，當判斷出該直流電力網1故障時，控制該等直流防護元件12其中至少一個啟動，並電連接該等交流防護元件22，當判斷出該交流電力網2故障時，控制該等交流防護元件22其中至少一個啟動。被啟動的防護元件對應據以判斷出故障的感測信號所反應之狀態。在本實施例中，每一防護元件在啟動後會斷開電力網中與該狀態對應的迴路，或隔離電力網中與該狀態對應的區域。當故障的電力網被修復後，被啟動的防護元件可被重新設定，以將相對應的迴路或區域重新 併網。The controller 45 is further electrically connected to the DC protection components 12. When it is determined that the DC power grid 1 is faulty, at least one of the DC protection components 12 is controlled to be activated, and the AC protection components 22 are electrically connected. When the AC power grid 2 fails, at least one of the AC protection components 22 is controlled to be activated. The activated protective element corresponds to the state in which the sensed signal is determined to be faulty. In this embodiment, each guard element disconnects a loop corresponding to the state in the power grid after startup, or isolates an area of the power grid corresponding to the state. When the faulty power grid is repaired, the activated guard element can be reset to re-establish the corresponding loop or zone. On-grid.
該控制器45還電連接該逆變模組3，控制該逆變模組3開機，接收該逆變模組3所輸出的該開機信號，根據該直流測量信號及是否收到該開機信號，判斷該逆變模組3是否損壞。在本實施例中，在根據該直流測量信號判斷出該直流電力網1沒有故障及未收到該開機信號時，判斷該逆變模組3損壞。The controller 45 is further electrically connected to the inverter module 3, controls the inverter module 3 to be powered on, receives the power-on signal output by the inverter module 3, and according to the DC measurement signal and whether the power-on signal is received, It is determined whether the inverter module 3 is damaged. In this embodiment, when it is determined that the DC power network 1 has no fault according to the DC measurement signal and the power-on signal is not received, it is determined that the inverter module 3 is damaged.
較佳地，該控制器45還在判斷出該直流電力網1、該交流電力網2及該逆變模組3其中至少一個故障或損壞時，發出一故障通知。Preferably, the controller 45 also issues a failure notification when it is determined that at least one of the DC power network 1, the AC power network 2, and the inverter module 3 is faulty or damaged.
參閱圖1與圖2，該直流切換器41包括多個電驛412及一切換電路411。Referring to FIGS. 1 and 2, the DC switch 41 includes a plurality of power switches 412 and a switching circuit 411.
該等電驛412分別對應該等直流感測信號，每一電驛412電連接於該直流電力網1及該直流電儀表42之間，且受控制導通或不導通使得該相對應直流感測信號傳輸或不傳輸到該直流電儀表42。在本實施例中，每一電驛412包括一個第一部分413及一個第二部分414，該第一部分413對應該相對應直流感測信號的電壓部分，電連接於該直流電力網1中相對應的直流感測元件11的分壓器111及該直流電儀表42的電壓計421之間，且受控制導通或不導通使得該相對應直流感測信號的電壓部分傳輸或不傳輸到該直流電儀表42的電壓計421，該第二部分對應該相對應直流感測信號的電流部分，電連接於該直流電力網1中相對應的直流感測元件11的分流器112及該直流電儀表42的電流 計422之間，且受控制導通或不導通使得該相對應直流感測信號的電流部分傳輸或不傳輸到該直流電儀表42的電流計422，當該電譯412導通時，該第一部分413及該第二部分414都導通，當該電譯412不導通時，該第一部分413及該第二部分414都不導通。The power switches 412 respectively correspond to DC sensing signals, and each power port 412 is electrically connected between the DC power network 1 and the DC power meter 42 and is controlled to be turned on or off to transmit the corresponding DC sensing signal. Or not transmitted to the DC meter 42. In this embodiment, each of the power 412 includes a first portion 413 and a second portion 414. The first portion 413 is electrically connected to the corresponding portion of the DC power network 1 corresponding to the voltage portion of the DC sensing signal. Between the voltage divider 111 of the DC sensing component 11 and the voltmeter 421 of the DC power meter 42, and controlled to be turned on or off such that the voltage portion of the corresponding DC sensing signal is transmitted or not transmitted to the DC power meter 42. a voltmeter 421, the second portion corresponding to the current portion of the DC sensing signal, electrically connected to the current divider 112 of the corresponding DC sensing component 11 of the DC power grid 1 and the current of the DC instrument 42 Between the terminals 422, and controlled to be turned on or off, the current portion of the corresponding DC sensing signal is transmitted or not transmitted to the ammeter 422 of the DC instrument 42. When the translation 412 is turned on, the first portion 413 and The second portion 414 is both turned on. When the translation 412 is not turned on, the first portion 413 and the second portion 414 are not turned on.
該切換電路411電連接該控制器45及該等電驛412，受該控制器45控制輸出多個電信號分別使該等電驛412導通或不導通，且同時最多只有一個電驛412導通。The switching circuit 411 is electrically connected to the controller 45 and the power 412, and is controlled by the controller 45 to output a plurality of electrical signals to respectively turn on or off the power 412, and at the same time, at most one power 412 is turned on.
參閱圖1與圖3，該交流切換器43包括多個電驛432及一切換電路431。Referring to FIGS. 1 and 3, the AC switch 43 includes a plurality of power switches 432 and a switching circuit 431.
該等電驛432分別對應該等交流感測信號，每一電驛432電連接該於交流電力網2及該交流電儀表44之間，且受控制導通或不導通使得該相對應交流感測信號傳輸或不傳輸到該交流電儀表44。在本實施例中，每一電驛432包括一個第一部分433及一個第二部分434，該第一部分433對應該相對應交流感測信號的電壓部分，電連接於該交流電力網2中相對應的交流感測元件21的比壓器211及該交流電儀表44的電壓計441之間，且受控制導通或不導通使得該相對應交流感測信號的電壓部分傳輸或不傳輸到該交流電儀表44的電壓計441，該第二部分434對應該相對應交流感測信號的電流部分，電連接於該交流電力網2中相對應的交流感測元件21的比流器212及該交流電儀表44的電流計442之間，且受控制導通或不導通使得該相對應交流感測信號的電流部分傳輸或不傳輸到該交流電儀表44 的電流計442，當該電譯432導通時，該第一部分433及該第二部分434都導通，當該電譯432不導通時，該第一部分433及該第二部分434都不導通。The power switches 432 respectively correspond to alternating current sensing signals, and each power port 432 is electrically connected between the alternating current power network 2 and the alternating current power meter 44, and is controlled to be turned on or off to transmit the corresponding alternating current sensing signal. Or not transmitted to the AC meter 44. In this embodiment, each of the electrodes 432 includes a first portion 433 and a second portion 434. The first portion 433 is electrically connected to the corresponding portion of the AC power grid 2 corresponding to the voltage portion of the AC sensing signal. Between the voltage comparator 211 of the AC sensing component 21 and the voltmeter 441 of the AC power meter 44, and controlled to be turned on or off, the voltage portion of the corresponding AC sensing signal is transmitted or not transmitted to the AC power meter 44. The voltmeter 441, the current portion of the second portion 434 corresponding to the alternating current sensing signal is electrically connected to the current comparator 212 of the corresponding alternating current sensing element 21 of the alternating current power network 2 and the current meter of the alternating current meter 44 Between 442, and controlled by conduction or non-conduction, the current portion of the corresponding alternating sensing signal is transmitted or not transmitted to the alternating current meter 44. The current meter 442, when the translation 432 is turned on, the first portion 433 and the second portion 434 are both turned on. When the translation 432 is not turned on, the first portion 433 and the second portion 434 are not turned on.
該切換電路431電連接該控制器45及該等電驛432，受該控制器45控制輸出多個電信號分別使該等電驛432導通或不導通，且同時最多只有一個電驛432導通。The switching circuit 431 is electrically connected to the controller 45 and the power 432, and is controlled by the controller 45 to output a plurality of electrical signals to respectively turn on or off the power 432, and at the same time, at most one power 432 is turned on.
參閱圖3與圖4，每一電驛432的第二部分434具有一線圈415及二主接點416。每一主接點416電連接在該比流器212及該電流計442之間。該線圈415電連接該切換電路431並受控通電或不通電，因而控制該等主接點416於A位置及B位置間移動。當該等主接點416於B位置時，是電連接該比流器212至該電流計442使得該相對應交流感測信號的電流部分傳輸到電流計442(該第二部分434導通)；當該等主接點416於A位置時，將該比流器212的輸出短路使得該相對應交流感測信號的電流部分不傳輸到電流計442(該第二部分434不導通)。Referring to FIGS. 3 and 4, the second portion 434 of each of the electrodes 432 has a coil 415 and two main contacts 416. Each main contact 416 is electrically coupled between the current comparator 212 and the galvanometer 442. The coil 415 is electrically coupled to the switching circuit 431 and is controlled to be energized or de-energized, thereby controlling the primary contacts 416 to move between the A and B positions. When the main contacts 416 are in the B position, the current comparator 212 is electrically connected to the current meter 442 such that the current portion of the corresponding AC sensing signal is transmitted to the ammeter 442 (the second portion 434 is turned on); When the primary contacts 416 are in the A position, the output of the current comparator 212 is shorted such that the current portion of the corresponding alternating sense signal is not transmitted to the ammeter 442 (the second portion 434 is non-conductive).
較佳地，該第二部分434還具有二分別並聯於該等主接點416的輔助接點417，該等輔助接點417電連接該切換電路431以受控制導通或不導通。當該電驛432從不導通切換為導通時，該等輔助接點417先切換為導通，接著該等主接點416切換為導通，之後該等輔助接點417再切換為不導通。當該等主接點416為不耐高壓的機械接點，而該等輔助接點417為SCR(Silicon-controlled rectifier，矽控整流器)或可耐高壓的半導體開關元件時，搭配這種切 換順序可以防止該等主接點在切換過程中因電壓過大而損壞。該電驛412(見圖2)的第二部分414設計與圖4類似，故不再贅述。Preferably, the second portion 434 further has two auxiliary contacts 417 respectively connected in parallel to the main contacts 416. The auxiliary contacts 417 are electrically connected to the switching circuit 431 to be controlled to be turned on or off. When the power 432 is switched from non-conducting to conducting, the auxiliary contacts 417 are first switched to be turned on, and then the main contacts 416 are switched to be turned on, and then the auxiliary contacts 417 are switched to non-conducting. When the main contacts 416 are mechanical contacts that are not resistant to high voltage, and the auxiliary contacts 417 are SCR (Silicon-controlled rectifier) or high voltage resistant semiconductor switching elements, The changing sequence prevents the main contacts from being damaged due to excessive voltage during the switching process. The second portion 414 of the power 412 (see FIG. 2) is similar in design to that of FIG. 4 and will not be described again.
參閱圖3與圖5，每一電驛432的第一部分433具有一線圈418、二主接點419及二輔助接點420。每一主接點419電連接在該比壓器211及該電壓計441之間。該線圈418電連接該切換電路431並受控通電或不通電，因而控制該等主接點419於A位置及B位置間移動。當該等主接點419於B位置時，是電連接該比壓器211至該電壓計441使得該相對應交流感測信號的電壓部分傳輸到電壓計441(該第一部分433導通)；當該等主接點419於A位置時，將該比壓器211的輸出開路使得該相對應交流感測信號的電壓部分不傳輸到電壓計441(該第一部分433不導通)。該等輔助接點420之功用與控制與前段所述相似。該電驛412(見圖2)的第一部分413設計與圖5類似，故不再贅述。Referring to FIGS. 3 and 5, the first portion 433 of each of the electrodes 432 has a coil 418, two main contacts 419, and two auxiliary contacts 420. Each main contact 419 is electrically connected between the voltage comparator 211 and the voltmeter 441. The coil 418 is electrically connected to the switching circuit 431 and is controlled to be energized or de-energized, thereby controlling the main contacts 419 to move between the A position and the B position. When the main contacts 419 are in the B position, the voltage divider 211 is electrically connected to the voltmeter 441 such that the voltage portion of the corresponding alternating sense signal is transmitted to the voltmeter 441 (the first portion 433 is turned on); When the main contacts 419 are in the A position, the output of the voltage comparator 211 is opened such that the voltage portion of the corresponding AC sensing signal is not transmitted to the voltmeter 441 (the first portion 433 is not conducting). The functions and controls of the auxiliary contacts 420 are similar to those described in the previous paragraph. The first portion 413 of the power 412 (see FIG. 2) is similar in design to that of FIG. 5 and will not be described again.
由於比流器212是將大電流轉換為小電流以供偵測，故其輸出端具有高電壓，所以當比流器212未電連接至電流計442時，是將其短路以避免危險(見圖4)。比壓器211是將大電壓轉換為小電壓以供偵測，故其輸出端具有大電流，當比壓器211未電連接至電壓計441時，是將其開路(見圖5)。Since the current comparator 212 converts a large current into a small current for detection, its output has a high voltage, so when the current comparator 212 is not electrically connected to the ammeter 442, it is short-circuited to avoid danger (see Figure 4). The voltage comparator 211 converts the large voltage into a small voltage for detection, so that the output terminal has a large current, and when the voltage comparator 211 is not electrically connected to the voltmeter 441, it is opened (see FIG. 5).
值得注意的是，在本實施例中，該直流電力網1可以只包括一個直流防護元件12，該直流防護元件12在啟動後會斷開該直流電力網1中與該等狀態對應的迴路，或隔離 該直流電力網1中與該等狀態對應的區域；及該交流電力網2可以只包括一個交流防護元件22，該交流防護元件22在啟動後會斷開該交流電力網2中與該等狀態對應的迴路，或隔離該交流電力網2中與該等狀態對應的區域。在其它實施例中，可以有至少一直流感測信號只包括電壓部分或電流部分，此時，該等直流感測元件11中不必要的分壓器111或分流器112、該等電驛412中不必要的部分及該直流電儀表42中不必要的電壓計421或電流計422可以被省略，該控制器45的判斷方式需被對應調整；及可以有至少一交流感測信號只包括電壓部分或電流部分，此時，該等交流感測元件21中不必要的比壓器211或比流器212、該等電驛432中不必要的部分及該交流電儀表44中不必要的電壓計441或電流計442可以被省略，該控制器45的判斷方式需被對應調整。It should be noted that, in this embodiment, the DC power grid 1 may include only one DC protection component 12, and the DC protection component 12 may disconnect the loop corresponding to the states in the DC power grid 1 after startup, or isolate An area of the DC power grid 1 corresponding to the states; and the AC power grid 2 may include only one AC protection component 22, and the AC protection component 22 may disconnect the loop corresponding to the states in the AC power grid 2 after startup. Or isolating an area of the AC power network 2 corresponding to the states. In other embodiments, there may be at least a continuous influenza signal including only a voltage portion or a current portion. In this case, unnecessary voltage dividers 111 or shunts 112 in the DC sensing elements 11 are in the power 412 The unnecessary portion and the unnecessary voltmeter 421 or ammeter 422 in the DC meter 42 may be omitted, the manner of determining the controller 45 needs to be adjusted correspondingly; and at least one AC sensing signal may include only the voltage portion or The current portion, at this time, the unnecessary comparator 211 or the comparator 212 in the alternating current sensing element 21, the unnecessary portion of the power 432, and the unnecessary voltmeter 441 in the alternating current meter 44 or The galvanometer 442 can be omitted, and the manner of determination by the controller 45 needs to be adjusted accordingly.
綜上所述，上述實施例利用該直流切換器41切換不同直流感測信號，僅需使用一個直流電儀表42，利用該交流切換器43切換不同交流感測信號，僅需使用一個交流電儀表44，可以減少儀表的數量，也可以降低該控制器的控制方式的複雜性，故確實能達成本發明之目的。In summary, the above embodiment uses the DC switch 41 to switch different DC sensing signals, and only needs to use one DC power meter 42 to switch different AC sensing signals by using the AC switch 43. Only one AC power meter 44 is needed. The number of meters can be reduced, and the complexity of the control mode of the controller can be reduced, so that the object of the present invention can be achieved.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.
1‧‧‧直流電力網1‧‧‧DC Power Network
11‧‧‧直流感測元件11‧‧‧DC sensing components
111‧‧‧分壓器111‧‧‧Divider
112‧‧‧分流器112‧‧‧Splitter
12‧‧‧直流防護元件12‧‧‧DC protection components
2‧‧‧交流電力網2‧‧‧AC power network
21‧‧‧交流感測元件21‧‧‧AC sensing components
211‧‧‧比壓器211‧‧‧ Comparator
212‧‧‧比流器212‧‧‧ current comparator
22‧‧‧交流防護元件22‧‧‧AC protective components
3‧‧‧逆變模組3‧‧‧Inverter module
4‧‧‧電力管理模組4‧‧‧Power Management Module
41‧‧‧直流切換器41‧‧‧DC Switcher
411‧‧‧切換電路411‧‧‧Switching circuit
412‧‧‧電驛412‧‧‧Electricity
413‧‧‧第一部分413‧‧‧Part 1
414‧‧‧第二部分414‧‧‧Part II
415‧‧‧線圈415‧‧‧ coil
416‧‧‧主接點416‧‧‧ main contact
417‧‧‧輔助接點417‧‧‧Auxiliary contacts
418‧‧‧線圈418‧‧‧ coil
419‧‧‧主接點419‧‧‧Main contacts
420‧‧‧輔助接點420‧‧‧Auxiliary contacts
42‧‧‧直流電儀表42‧‧‧DC instrument
421‧‧‧電壓計421‧‧‧ voltmeter
422‧‧‧電流計422‧‧‧ galvanometer
43‧‧‧交流切換器43‧‧‧AC switcher
431‧‧‧切換電路431‧‧‧Switching circuit
432‧‧‧電驛432‧‧‧Electricity
433‧‧‧第一部分433‧‧‧Part 1
434‧‧‧第二部分434‧‧‧Part II
44‧‧‧交流電儀表44‧‧‧AC instrument
441‧‧‧電壓計441‧‧‧ voltmeter
442‧‧‧電流計442‧‧‧ galvanometer
45‧‧‧控制器45‧‧‧ Controller
圖1是本發明電力系統之較佳實施例的架構圖；圖2是本較佳實施例的一直流切換器的架構圖；圖3是本較佳實施例的一交流切換器的架構圖；圖4是本較佳實施例的一交流切換器的一電驛的架構圖；及圖5是本較佳實施例的該交流切換器的另一電驛的架構圖。1 is a block diagram of a preferred embodiment of a power system of the present invention; FIG. 2 is a block diagram of a DC switch of the preferred embodiment; FIG. 3 is a block diagram of an AC switch of the preferred embodiment; 4 is an architectural diagram of an electrical switch of the AC switch of the preferred embodiment; and FIG. 5 is an architectural diagram of another electrical switch of the AC switch of the preferred embodiment.
1‧‧‧直流電力網1‧‧‧DC Power Network
11‧‧‧直流感測元件11‧‧‧DC sensing components
12‧‧‧直流防護元件12‧‧‧DC protection components
2‧‧‧交流電力網2‧‧‧AC power network
21‧‧‧交流感測元件21‧‧‧AC sensing components
22‧‧‧交流防護元件22‧‧‧AC protective components
3‧‧‧逆變模組3‧‧‧Inverter module
4‧‧‧電力管理模組4‧‧‧Power Management Module
41‧‧‧直流切換器41‧‧‧DC Switcher
42‧‧‧直流電儀表42‧‧‧DC instrument
43‧‧‧交流切換器43‧‧‧AC switcher
44‧‧‧交流電儀表44‧‧‧AC instrument
45‧‧‧控制器45‧‧‧ Controller
Claims (16)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101136712A TWI476417B (en) | 2012-10-04 | 2012-10-04 | Electric power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101136712A TWI476417B (en) | 2012-10-04 | 2012-10-04 | Electric power system |
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| TW201415044A TW201415044A (en) | 2014-04-16 |
| TWI476417B true TWI476417B (en) | 2015-03-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2437038Y (en) * | 2000-06-23 | 2001-06-27 | 天津市电力公司西青供电分公司 | Electromagnetic relay |
| TW200601800A (en) * | 2004-06-30 | 2006-01-01 | Ming-He Du | Distributed power system fault reporting apparatus using global system for mobile communication (GSM) |
| EP1860445A1 (en) * | 2006-05-22 | 2007-11-28 | Kabushiki Kaisha Toyota Jidoshokki | Ground detector and DC-AC inverter for vehicles |
| CN101382577A (en) * | 2008-10-24 | 2009-03-11 | 华北电力大学 | Single-phase earth fault positioning device for electrical power distribution network |
| CN102472780A (en) * | 2009-06-29 | 2012-05-23 | 艾劳埃斯·乌本 | Method and device for monitoring the state of a network |
-
2012
- 2012-10-04 TW TW101136712A patent/TWI476417B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2437038Y (en) * | 2000-06-23 | 2001-06-27 | 天津市电力公司西青供电分公司 | Electromagnetic relay |
| TW200601800A (en) * | 2004-06-30 | 2006-01-01 | Ming-He Du | Distributed power system fault reporting apparatus using global system for mobile communication (GSM) |
| EP1860445A1 (en) * | 2006-05-22 | 2007-11-28 | Kabushiki Kaisha Toyota Jidoshokki | Ground detector and DC-AC inverter for vehicles |
| CN101382577A (en) * | 2008-10-24 | 2009-03-11 | 华北电力大学 | Single-phase earth fault positioning device for electrical power distribution network |
| CN102472780A (en) * | 2009-06-29 | 2012-05-23 | 艾劳埃斯·乌本 | Method and device for monitoring the state of a network |
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