Electric Power Transfer Ac Network TRIZ Cases

A control system operates source side converters in a frequency damping mode to stabilize AC voltage at the connecting point.

Single-piece support structure merges mechanical and electrical functions to eliminate assembly time and complexity.

A voltage-coordinated control method stabilizes DC voltage in hybrid distribution networks using droop models.

A short-circuiting device across auxiliary transformer windings lowers current stresses to enable prompt AC breaker opening during pole-to-ground faults.

A single-stage three-phase power conversion device merges rectification and DC/DC modules to reduce component count.

Dynamic switching timing based on clamp capacitor voltage levels balances director switch units, preventing instability from voltage imbalances.

A DC transmission network control method opens N-1 security systems to reduce fault current before line circuit breakers operate.

An AC-to-AC converter changes variable generator output to fixed low frequency, reducing equipment size and cost for long-distance transmission.

Dynamic switching coefficient adjustment suppresses bridge-arm currents to limit DC fault currents, reducing circuit breaker capacity requirements.

HVDC power increase controller adjusts current command values based on AC voltage and DC power comparisons to prevent rectification failures during overloading.

Pairs DC terminals to modulate active power, damping interarea oscillations without creating power imbalances.

A bypass protection circuit with selective semiconductor elements diverts forward and reverse fault currents in HVDC converter limbs.

A power control system manages AC/DC converters and switches to enable flexible reactive power compensation across transmission lines.

A parallel resistor-capacitor inhibitor module connects to high voltage shield elements.

Bidirectional inverters regulate charge cycles to balance grid loads, eliminating fossil fuel reliance and reducing environmental pollution.

A voltage source converter controller regulates energy levels by forcing common current through storage devices to exchange power.

A vacuum circuit breaker interrupts load current while a gas-insulated unit provides voltage isolation in high-voltage direct current transmission paths.

Modular converter submodules generate reverse voltage to extinguish arcs on high-voltage DC lines.

Converters transform standard AC voltage to lower fundamental frequency, reducing transmission losses and infrastructure complexity compared to HVDC systems.

A control strategy for parallel MMC units in LCC-MMC hybrid converters calculates and corrects direct-current voltage instructions.

Neutral bus switching element disconnects converter from ground electrode, damping transient currents to zero and reducing fault clearance time in HVDC systems.

A single point-to-point connection transmits measurement samples and field bus data using a structured frame with distinct sections.

Reactor-based reactive compensation extends subsea AC transmission distance beyond 200 km while reducing system complexity.

Virtual output resistance and hybrid Min-Max filtering improve UPS dynamic load sharing while reducing harmonic distortion.

A current flow controller injects voltage drops via auxiliary switching elements and energy storage devices to regulate direct current transmission.

A reconfigurable power flow controller uses a switching interface to manage twelve operating states, optimizing current distribution and link utilization.

Plastic deformation in the damping element absorbs seismic kinetic energy, reducing bending moments on post insulators and eliminating hydraulic leakage risks.

A switching element uses a voltage divider bridge to drive semiconductor switches for fast fault current commutation.

An integrated DC link choke uses shunts to route magnetic flux between core legs, coupling rectifier and inverter stages.

Relay protection device converts reactor current to equivalent capacitor current for amplitude ratio calculation.

A DC power system fault handling arrangement disconnects and reconnects power lines using line separating devices to restore service.

A dual-shaft gas turbine system uses a frequency converter and governor to manage power output across varying grid demands.

Surge tank pre-filling and mechanical switching allow hydroelectric plants to regulate grid frequency within one second, overcoming water column inertia delays.

Capacitors and damping resistors reduce low-order current harmonics to meet IEEE 519 specifications for single-phase loads.

Series inductances and capacitors in parallel supply lines reduce unipolar signal interference between loads.

A control system operates AC-DC converters in voltage control and protection modes to manage power transfer.

Segmenting modulation references eliminates harmonic coupling between asynchronous networks while maintaining capacitor voltage balancing.

Resonant circuit maintains charged capacitor state to enable high-speed reclosure without additional components, reducing device size.

A power conversion system stabilizes load voltage using parallel current-controlled devices.

Relocating frequency conversion onshore eliminates heavy DC-to-AC equipment underwater, enabling reliable long-distance power transfer without resonances.

A frequency control apparatus switches power interchange modes to minimize specific frequency deviations in interconnected DC systems.

Segmented DC networks with modular voltage source converters distribute power across multiple AC nodes to minimize transmission losses.

Antiparallel line-commutated converters coordinate real power to minimize sudden changes during switching, reducing transmission losses in weak AC grids.

A DC link balances power flows between medium-voltage networks, reducing short-circuit power and grid reinforcement costs.

Real-time frequency detection triggers modular multilevel converter output level adjustments, injecting inertial energy to dampen power system fluctuations.

A modular multilevel converter sub-module uses a third semiconductor switch to enable shared redundancy across upper and lower arms.

An Excessive Regeneration Detector adjusts HVDC feedback gain to reduce control loop modulus.

A hybrid back-to-back direct current transmission system uses changeover switches to route power between LCC and VSC converters for bidirectional flow.

A generalized equivalent circuit model simulates modular multilevel converters using simplified switching functions.

Synchronizing output voltage and frequency via a control module eliminates inrush currents during variable frequency generator transfers.